- updated size_overflow plugin from Emese (better handling of cloned functions) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/alpha/include/asm/atomic.h linux-2.6.32.59-pax/arch/alpha/include/asm/atomic.h --- linux-2.6.32.59/arch/alpha/include/asm/atomic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/alpha/include/asm/atomic.h 2012-03-13 13:15:34.268098438 +0100 @@ -251,6 +251,16 @@ static __inline__ int atomic64_add_unles #define atomic_dec(v) atomic_sub(1,(v)) #define atomic64_dec(v) atomic64_sub(1,(v)) +#define atomic64_read_unchecked(v) atomic64_read(v) +#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) +#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) +#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) +#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) +#define atomic64_inc_unchecked(v) atomic64_inc(v) +#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) +#define atomic64_dec_unchecked(v) atomic64_dec(v) +#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) + #define smp_mb__before_atomic_dec() smp_mb() #define smp_mb__after_atomic_dec() smp_mb() #define smp_mb__before_atomic_inc() smp_mb() diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/alpha/include/asm/elf.h linux-2.6.32.59-pax/arch/alpha/include/asm/elf.h --- linux-2.6.32.59/arch/alpha/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/alpha/include/asm/elf.h 2012-03-13 13:15:34.268098438 +0100 @@ -91,6 +91,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (current->personality & ADDR_LIMIT_32BIT ? 0x10000 : 0x120000000UL) + +#define PAX_DELTA_MMAP_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 28) +#define PAX_DELTA_STACK_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 19) +#endif + /* $0 is set by ld.so to a pointer to a function which might be registered using atexit. This provides a mean for the dynamic linker to call DT_FINI functions for shared libraries that have diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/alpha/include/asm/pgalloc.h linux-2.6.32.59-pax/arch/alpha/include/asm/pgalloc.h --- linux-2.6.32.59/arch/alpha/include/asm/pgalloc.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/alpha/include/asm/pgalloc.h 2012-05-07 17:49:11.980114624 +0200 @@ -29,6 +29,12 @@ pgd_populate(struct mm_struct *mm, pgd_t pgd_set(pgd, pmd); } +static inline void +pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) +{ + pgd_populate(mm, pgd, pmd); +} + extern pgd_t *pgd_alloc(struct mm_struct *mm); static inline void diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/alpha/include/asm/pgtable.h linux-2.6.32.59-pax/arch/alpha/include/asm/pgtable.h --- linux-2.6.32.59/arch/alpha/include/asm/pgtable.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/alpha/include/asm/pgtable.h 2012-03-13 13:15:34.268098438 +0100 @@ -101,6 +101,17 @@ struct vm_area_struct; #define PAGE_SHARED __pgprot(_PAGE_VALID | __ACCESS_BITS) #define PAGE_COPY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) #define PAGE_READONLY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW) + +#ifdef CONFIG_PAX_PAGEEXEC +# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOE) +# define PAGE_COPY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) +# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_COPY_NOEXEC PAGE_COPY +# define PAGE_READONLY_NOEXEC PAGE_READONLY +#endif + #define PAGE_KERNEL __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE) #define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x)) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/alpha/kernel/module.c linux-2.6.32.59-pax/arch/alpha/kernel/module.c --- linux-2.6.32.59/arch/alpha/kernel/module.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/alpha/kernel/module.c 2012-03-13 13:15:34.268098438 +0100 @@ -182,7 +182,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, /* The small sections were sorted to the end of the segment. The following should definitely cover them. */ - gp = (u64)me->module_core + me->core_size - 0x8000; + gp = (u64)me->module_core_rw + me->core_size_rw - 0x8000; got = sechdrs[me->arch.gotsecindex].sh_addr; for (i = 0; i < n; i++) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/alpha/kernel/osf_sys.c linux-2.6.32.59-pax/arch/alpha/kernel/osf_sys.c --- linux-2.6.32.59/arch/alpha/kernel/osf_sys.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/alpha/kernel/osf_sys.c 2012-03-13 13:15:34.272098333 +0100 @@ -1172,7 +1172,7 @@ arch_get_unmapped_area_1(unsigned long a /* At this point: (!vma || addr < vma->vm_end). */ if (limit - len < addr) return -ENOMEM; - if (!vma || addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) return addr; addr = vma->vm_end; vma = vma->vm_next; @@ -1208,6 +1208,10 @@ arch_get_unmapped_area(struct file *filp merely specific addresses, but regions of memory -- perhaps this feature should be incorporated into all ports? */ +#ifdef CONFIG_PAX_RANDMMAP + if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); if (addr != (unsigned long) -ENOMEM) @@ -1215,8 +1219,8 @@ arch_get_unmapped_area(struct file *filp } /* Next, try allocating at TASK_UNMAPPED_BASE. */ - addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), - len, limit); + addr = arch_get_unmapped_area_1 (PAGE_ALIGN(current->mm->mmap_base), len, limit); + if (addr != (unsigned long) -ENOMEM) return addr; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/alpha/mm/fault.c linux-2.6.32.59-pax/arch/alpha/mm/fault.c --- linux-2.6.32.59/arch/alpha/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/alpha/mm/fault.c 2012-03-13 13:15:34.272098333 +0100 @@ -54,6 +54,124 @@ __load_new_mm_context(struct mm_struct * __reload_thread(pcb); } +#ifdef CONFIG_PAX_PAGEEXEC +/* + * PaX: decide what to do with offenders (regs->pc = fault address) + * + * returns 1 when task should be killed + * 2 when patched PLT trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: patched PLT emulation #1 */ + unsigned int ldah, ldq, jmp; + + err = get_user(ldah, (unsigned int *)regs->pc); + err |= get_user(ldq, (unsigned int *)(regs->pc+4)); + err |= get_user(jmp, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((ldah & 0xFFFF0000U) == 0x277B0000U && + (ldq & 0xFFFF0000U) == 0xA77B0000U && + jmp == 0x6BFB0000U) + { + unsigned long r27, addr; + unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; + unsigned long addrl = ldq | 0xFFFFFFFFFFFF0000UL; + + addr = regs->r27 + ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); + err = get_user(r27, (unsigned long *)addr); + if (err) + break; + + regs->r27 = r27; + regs->pc = r27; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #2 */ + unsigned int ldah, lda, br; + + err = get_user(ldah, (unsigned int *)regs->pc); + err |= get_user(lda, (unsigned int *)(regs->pc+4)); + err |= get_user(br, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((ldah & 0xFFFF0000U) == 0x277B0000U && + (lda & 0xFFFF0000U) == 0xA77B0000U && + (br & 0xFFE00000U) == 0xC3E00000U) + { + unsigned long addr = br | 0xFFFFFFFFFFE00000UL; + unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16; + unsigned long addrl = lda | 0xFFFFFFFFFFFF0000UL; + + regs->r27 += ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL); + regs->pc += 12 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); + return 2; + } + } while (0); + + do { /* PaX: unpatched PLT emulation */ + unsigned int br; + + err = get_user(br, (unsigned int *)regs->pc); + + if (!err && (br & 0xFFE00000U) == 0xC3800000U) { + unsigned int br2, ldq, nop, jmp; + unsigned long addr = br | 0xFFFFFFFFFFE00000UL, resolver; + + addr = regs->pc + 4 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2); + err = get_user(br2, (unsigned int *)addr); + err |= get_user(ldq, (unsigned int *)(addr+4)); + err |= get_user(nop, (unsigned int *)(addr+8)); + err |= get_user(jmp, (unsigned int *)(addr+12)); + err |= get_user(resolver, (unsigned long *)(addr+16)); + + if (err) + break; + + if (br2 == 0xC3600000U && + ldq == 0xA77B000CU && + nop == 0x47FF041FU && + jmp == 0x6B7B0000U) + { + regs->r28 = regs->pc+4; + regs->r27 = addr+16; + regs->pc = resolver; + return 3; + } + } + } while (0); +#endif + + return 1; +} + +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif /* * This routine handles page faults. It determines the address, @@ -131,8 +249,29 @@ do_page_fault(unsigned long address, uns good_area: si_code = SEGV_ACCERR; if (cause < 0) { - if (!(vma->vm_flags & VM_EXEC)) + if (!(vma->vm_flags & VM_EXEC)) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->pc) + goto bad_area; + + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 2: + case 3: + return; +#endif + + } + pax_report_fault(regs, (void *)regs->pc, (void *)rdusp()); + do_group_exit(SIGKILL); +#else goto bad_area; +#endif + + } } else if (!cause) { /* Allow reads even for write-only mappings */ if (!(vma->vm_flags & (VM_READ | VM_WRITE))) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/atomic.h linux-2.6.32.59-pax/arch/arm/include/asm/atomic.h --- linux-2.6.32.59/arch/arm/include/asm/atomic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/atomic.h 2012-08-12 13:31:48.089243355 +0200 @@ -15,6 +15,10 @@ #include #include +#ifdef CONFIG_GENERIC_ATOMIC64 +#include +#endif + #define ATOMIC_INIT(i) { (i) } #ifdef __KERNEL__ @@ -24,8 +28,16 @@ * strex/ldrex monitor on some implementations. The reason we can use it for * atomic_set() is the clrex or dummy strex done on every exception return. */ -#define atomic_read(v) ((v)->counter) +#define atomic_read(v) (*(volatile int *)&(v)->counter) +static inline int atomic_read_unchecked(const atomic_unchecked_t *v) +{ + return v->counter; +} #define atomic_set(v,i) (((v)->counter) = (i)) +static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) +{ + v->counter = i; +} #if __LINUX_ARM_ARCH__ >= 6 @@ -40,6 +52,35 @@ static inline void atomic_add(int i, ato int result; __asm__ __volatile__("@ atomic_add\n" +"1: ldrex %1, [%2]\n" +" add %0, %1, %3\n" + +#ifdef CONFIG_PAX_REFCOUNT +" bvc 3f\n" +"2: bkpt 0xf103\n" +"3:\n" +#endif + +" strex %1, %0, [%2]\n" +" teq %1, #0\n" +" bne 1b" + +#ifdef CONFIG_PAX_REFCOUNT +"\n4:\n" + _ASM_EXTABLE(2b, 4b) +#endif + + : "=&r" (result), "=&r" (tmp) + : "r" (&v->counter), "Ir" (i) + : "cc"); +} + +static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) +{ + unsigned long tmp; + int result; + + __asm__ __volatile__("@ atomic_add_unchecked\n" "1: ldrex %0, [%2]\n" " add %0, %0, %3\n" " strex %1, %0, [%2]\n" @@ -58,6 +99,42 @@ static inline int atomic_add_return(int smp_mb(); __asm__ __volatile__("@ atomic_add_return\n" +"1: ldrex %1, [%2]\n" +" add %0, %1, %3\n" + +#ifdef CONFIG_PAX_REFCOUNT +" bvc 3f\n" +" mov %0, %1\n" +"2: bkpt 0xf103\n" +"3:\n" +#endif + +" strex %1, %0, [%2]\n" +" teq %1, #0\n" +" bne 1b" + +#ifdef CONFIG_PAX_REFCOUNT +"\n4:\n" + _ASM_EXTABLE(2b, 4b) +#endif + + : "=&r" (result), "=&r" (tmp) + : "r" (&v->counter), "Ir" (i) + : "cc"); + + smp_mb(); + + return result; +} + +static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) +{ + unsigned long tmp; + int result; + + smp_mb(); + + __asm__ __volatile__("@ atomic_add_return_unchecked\n" "1: ldrex %0, [%2]\n" " add %0, %0, %3\n" " strex %1, %0, [%2]\n" @@ -78,6 +155,35 @@ static inline void atomic_sub(int i, ato int result; __asm__ __volatile__("@ atomic_sub\n" +"1: ldrex %1, [%2]\n" +" sub %0, %1, %3\n" + +#ifdef CONFIG_PAX_REFCOUNT +" bvc 3f\n" +"2: bkpt 0xf103\n" +"3:\n" +#endif + +" strex %1, %0, [%2]\n" +" teq %1, #0\n" +" bne 1b" + +#ifdef CONFIG_PAX_REFCOUNT +"\n4:\n" + _ASM_EXTABLE(2b, 4b) +#endif + + : "=&r" (result), "=&r" (tmp) + : "r" (&v->counter), "Ir" (i) + : "cc"); +} + +static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) +{ + unsigned long tmp; + int result; + + __asm__ __volatile__("@ atomic_sub_unchecked\n" "1: ldrex %0, [%2]\n" " sub %0, %0, %3\n" " strex %1, %0, [%2]\n" @@ -96,11 +202,25 @@ static inline int atomic_sub_return(int smp_mb(); __asm__ __volatile__("@ atomic_sub_return\n" -"1: ldrex %0, [%2]\n" -" sub %0, %0, %3\n" +"1: ldrex %1, [%2]\n" +" subs %0, %1, %3\n" + +#ifdef CONFIG_PAX_REFCOUNT +" bvc 3f\n" +" mov %0, %1\n" +"2: bkpt 0xf103\n" +"3:\n" +#endif + " strex %1, %0, [%2]\n" " teq %1, #0\n" " bne 1b" + +#ifdef CONFIG_PAX_REFCOUNT +"\n4:\n" + _ASM_EXTABLE(2b, 4b) +#endif + : "=&r" (result), "=&r" (tmp) : "r" (&v->counter), "Ir" (i) : "cc"); @@ -132,6 +252,28 @@ static inline int atomic_cmpxchg(atomic_ return oldval; } +static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *ptr, int old, int new) +{ + unsigned long oldval, res; + + smp_mb(); + + do { + __asm__ __volatile__("@ atomic_cmpxchg_unchecked\n" + "ldrex %1, [%2]\n" + "mov %0, #0\n" + "teq %1, %3\n" + "strexeq %0, %4, [%2]\n" + : "=&r" (res), "=&r" (oldval) + : "r" (&ptr->counter), "Ir" (old), "r" (new) + : "cc"); + } while (res); + + smp_mb(); + + return oldval; +} + static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) { unsigned long tmp, tmp2; @@ -165,7 +307,17 @@ static inline int atomic_add_return(int return val; } + +static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) +{ + return atomic_add_return(i, v); +} + #define atomic_add(i, v) (void) atomic_add_return(i, v) +static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) +{ + (void) atomic_add_return(i, v); +} static inline int atomic_sub_return(int i, atomic_t *v) { @@ -180,6 +332,10 @@ static inline int atomic_sub_return(int return val; } #define atomic_sub(i, v) (void) atomic_sub_return(i, v) +static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) +{ + (void) atomic_sub_return(i, v); +} static inline int atomic_cmpxchg(atomic_t *v, int old, int new) { @@ -195,6 +351,11 @@ static inline int atomic_cmpxchg(atomic_ return ret; } +static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) +{ + return atomic_cmpxchg(v, old, new); +} + static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) { unsigned long flags; @@ -207,6 +368,10 @@ static inline void atomic_clear_mask(uns #endif /* __LINUX_ARM_ARCH__ */ #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) +static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) +{ + return xchg(&v->counter, new); +} static inline int atomic_add_unless(atomic_t *v, int a, int u) { @@ -220,11 +385,27 @@ static inline int atomic_add_unless(atom #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) #define atomic_inc(v) atomic_add(1, v) +static inline void atomic_inc_unchecked(atomic_unchecked_t *v) +{ + atomic_add_unchecked(1, v); +} #define atomic_dec(v) atomic_sub(1, v) +static inline void atomic_dec_unchecked(atomic_unchecked_t *v) +{ + atomic_sub_unchecked(1, v); +} #define atomic_inc_and_test(v) (atomic_add_return(1, v) == 0) +static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) +{ + return atomic_add_return_unchecked(1, v) == 0; +} #define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0) #define atomic_inc_return(v) (atomic_add_return(1, v)) +static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) +{ + return atomic_add_return_unchecked(1, v); +} #define atomic_dec_return(v) (atomic_sub_return(1, v)) #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/cacheflush.h linux-2.6.32.59-pax/arch/arm/include/asm/cacheflush.h --- linux-2.6.32.59/arch/arm/include/asm/cacheflush.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/cacheflush.h 2012-03-13 13:15:34.272098333 +0100 @@ -216,13 +216,13 @@ struct cpu_cache_fns { void (*dma_inv_range)(const void *, const void *); void (*dma_clean_range)(const void *, const void *); void (*dma_flush_range)(const void *, const void *); -}; +} __no_const; struct outer_cache_fns { void (*inv_range)(unsigned long, unsigned long); void (*clean_range)(unsigned long, unsigned long); void (*flush_range)(unsigned long, unsigned long); -}; +} __no_const; /* * Select the calling method diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/cache.h linux-2.6.32.59-pax/arch/arm/include/asm/cache.h --- linux-2.6.32.59/arch/arm/include/asm/cache.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/cache.h 2012-03-13 13:15:34.276098186 +0100 @@ -5,7 +5,7 @@ #define __ASMARM_CACHE_H #define L1_CACHE_SHIFT CONFIG_ARM_L1_CACHE_SHIFT -#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) +#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) /* * Memory returned by kmalloc() may be used for DMA, so we must make diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/elf.h linux-2.6.32.59-pax/arch/arm/include/asm/elf.h --- linux-2.6.32.59/arch/arm/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/elf.h 2012-03-13 13:15:34.276098186 +0100 @@ -109,7 +109,14 @@ int dump_task_regs(struct task_struct *t the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ -#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) +#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) + +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x00008000UL + +#define PAX_DELTA_MMAP_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) +#define PAX_DELTA_STACK_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10) +#endif /* When the program starts, a1 contains a pointer to a function to be registered with atexit, as per the SVR4 ABI. A value of 0 means we diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/kmap_types.h linux-2.6.32.59-pax/arch/arm/include/asm/kmap_types.h --- linux-2.6.32.59/arch/arm/include/asm/kmap_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/kmap_types.h 2012-03-13 13:15:34.276098186 +0100 @@ -19,6 +19,7 @@ enum km_type { KM_SOFTIRQ0, KM_SOFTIRQ1, KM_L2_CACHE, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/page.h linux-2.6.32.59-pax/arch/arm/include/asm/page.h --- linux-2.6.32.59/arch/arm/include/asm/page.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/page.h 2012-03-13 13:15:34.276098186 +0100 @@ -122,7 +122,7 @@ struct cpu_user_fns { void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr); void (*cpu_copy_user_highpage)(struct page *to, struct page *from, unsigned long vaddr); -}; +} __no_const; #ifdef MULTI_USER extern struct cpu_user_fns cpu_user; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/pgalloc.h linux-2.6.32.59-pax/arch/arm/include/asm/pgalloc.h --- linux-2.6.32.59/arch/arm/include/asm/pgalloc.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/pgalloc.h 2012-05-07 18:41:19.587947634 +0200 @@ -29,6 +29,7 @@ #define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); }) #define pmd_free(mm, pmd) do { } while (0) #define pgd_populate(mm,pmd,pte) BUG() +#define pgd_populate_kernel(mm,pmd,pte) BUG() extern pgd_t *get_pgd_slow(struct mm_struct *mm); extern void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/system.h linux-2.6.32.59-pax/arch/arm/include/asm/system.h --- linux-2.6.32.59/arch/arm/include/asm/system.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/system.h 2012-03-13 13:15:34.276098186 +0100 @@ -86,6 +86,8 @@ void hook_fault_code(int nr, int (*fn)(u #define xchg(ptr,x) \ ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) +#define xchg_unchecked(ptr,x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) extern asmlinkage void __backtrace(void); extern asmlinkage void c_backtrace(unsigned long fp, int pmode); @@ -98,7 +100,7 @@ extern int cpu_architecture(void); extern void cpu_init(void); void arm_machine_restart(char mode, const char *cmd); -extern void (*arm_pm_restart)(char str, const char *cmd); +extern void (*arm_pm_restart)(char str, const char *cmd) __noreturn; #define UDBG_UNDEFINED (1 << 0) #define UDBG_SYSCALL (1 << 1) @@ -505,6 +507,13 @@ static inline unsigned long long __cmpxc #endif /* __LINUX_ARM_ARCH__ >= 6 */ +#define _ASM_EXTABLE(from, to) \ +" .pushsection __ex_table,\"a\"\n"\ +" .align 3\n" \ +" .long " #from ", " #to"\n" \ +" .popsection" + + #endif /* __ASSEMBLY__ */ #define arch_align_stack(x) (x) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/include/asm/uaccess.h linux-2.6.32.59-pax/arch/arm/include/asm/uaccess.h --- linux-2.6.32.59/arch/arm/include/asm/uaccess.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/include/asm/uaccess.h 2012-03-13 13:15:34.280098071 +0100 @@ -22,6 +22,8 @@ #define VERIFY_READ 0 #define VERIFY_WRITE 1 +extern void check_object_size(const void *ptr, unsigned long n, bool to); + /* * The exception table consists of pairs of addresses: the first is the * address of an instruction that is allowed to fault, and the second is @@ -387,8 +389,23 @@ do { \ #ifdef CONFIG_MMU -extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n); -extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n); +extern unsigned long __must_check ___copy_from_user(void *to, const void __user *from, unsigned long n); +extern unsigned long __must_check ___copy_to_user(void __user *to, const void *from, unsigned long n); + +static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n) +{ + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + return ___copy_from_user(to, from, n); +} + +static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n) +{ + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + return ___copy_to_user(to, from, n); +} + extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n); extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n); extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned long n); @@ -403,6 +420,9 @@ extern unsigned long __must_check __strn static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + if (access_ok(VERIFY_READ, from, n)) n = __copy_from_user(to, from, n); else /* security hole - plug it */ @@ -412,6 +432,9 @@ static inline unsigned long __must_check static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + if (access_ok(VERIFY_WRITE, to, n)) n = __copy_to_user(to, from, n); return n; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/Kconfig linux-2.6.32.59-pax/arch/arm/Kconfig --- linux-2.6.32.59/arch/arm/Kconfig 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/Kconfig 2012-03-13 13:15:34.280098071 +0100 @@ -14,6 +14,7 @@ config ARM select SYS_SUPPORTS_APM_EMULATION select HAVE_OPROFILE select HAVE_ARCH_KGDB + select GENERIC_ATOMIC64 select HAVE_KPROBES if (!XIP_KERNEL) select HAVE_KRETPROBES if (HAVE_KPROBES) select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/kernel/armksyms.c linux-2.6.32.59-pax/arch/arm/kernel/armksyms.c --- linux-2.6.32.59/arch/arm/kernel/armksyms.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/kernel/armksyms.c 2012-03-13 13:15:34.280098071 +0100 @@ -118,8 +118,8 @@ EXPORT_SYMBOL(__strncpy_from_user); #ifdef CONFIG_MMU EXPORT_SYMBOL(copy_page); -EXPORT_SYMBOL(__copy_from_user); -EXPORT_SYMBOL(__copy_to_user); +EXPORT_SYMBOL(___copy_from_user); +EXPORT_SYMBOL(___copy_to_user); EXPORT_SYMBOL(__clear_user); EXPORT_SYMBOL(__get_user_1); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/kernel/process.c linux-2.6.32.59-pax/arch/arm/kernel/process.c --- linux-2.6.32.59/arch/arm/kernel/process.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/kernel/process.c 2012-03-13 16:44:09.119437848 +0100 @@ -83,7 +83,7 @@ static int __init hlt_setup(char *__unus __setup("nohlt", nohlt_setup); __setup("hlt", hlt_setup); -void arm_machine_restart(char mode, const char *cmd) +__noreturn void arm_machine_restart(char mode, const char *cmd) { /* * Clean and disable cache, and turn off interrupts @@ -117,7 +117,7 @@ void arm_machine_restart(char mode, cons void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); -void (*arm_pm_restart)(char str, const char *cmd) = arm_machine_restart; +void (*arm_pm_restart)(char str, const char *cmd) __noreturn = arm_machine_restart; EXPORT_SYMBOL_GPL(arm_pm_restart); @@ -195,6 +195,7 @@ __setup("reboot=", reboot_setup); void machine_halt(void) { + BUG(); } @@ -202,6 +203,7 @@ void machine_power_off(void) { if (pm_power_off) pm_power_off(); + BUG(); } void machine_restart(char *cmd) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/kernel/setup.c linux-2.6.32.59-pax/arch/arm/kernel/setup.c --- linux-2.6.32.59/arch/arm/kernel/setup.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/kernel/setup.c 2012-03-13 13:15:34.284098029 +0100 @@ -92,16 +92,16 @@ EXPORT_SYMBOL(elf_hwcap); struct processor processor; #endif #ifdef MULTI_TLB -struct cpu_tlb_fns cpu_tlb; +struct cpu_tlb_fns cpu_tlb __read_only; #endif #ifdef MULTI_USER -struct cpu_user_fns cpu_user; +struct cpu_user_fns cpu_user __read_only; #endif #ifdef MULTI_CACHE -struct cpu_cache_fns cpu_cache; +struct cpu_cache_fns cpu_cache __read_only; #endif #ifdef CONFIG_OUTER_CACHE -struct outer_cache_fns outer_cache; +struct outer_cache_fns outer_cache __read_only; #endif struct stack { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/kernel/vmlinux.lds.S linux-2.6.32.59-pax/arch/arm/kernel/vmlinux.lds.S --- linux-2.6.32.59/arch/arm/kernel/vmlinux.lds.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/kernel/vmlinux.lds.S 2012-03-13 16:24:09.527493862 +0100 @@ -74,14 +74,18 @@ SECTIONS #ifndef CONFIG_XIP_KERNEL __init_begin = _stext; INIT_DATA + EXIT_TEXT + EXIT_DATA . = ALIGN(PAGE_SIZE); __init_end = .; #endif } /DISCARD/ : { /* Exit code and data */ +#ifdef CONFIG_XIP_KERNEL EXIT_TEXT EXIT_DATA +#endif *(.exitcall.exit) *(.discard) *(.ARM.exidx.exit.text) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/lib/copy_from_user.S linux-2.6.32.59-pax/arch/arm/lib/copy_from_user.S --- linux-2.6.32.59/arch/arm/lib/copy_from_user.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/lib/copy_from_user.S 2012-03-13 13:15:34.284098029 +0100 @@ -16,7 +16,7 @@ /* * Prototype: * - * size_t __copy_from_user(void *to, const void *from, size_t n) + * size_t ___copy_from_user(void *to, const void *from, size_t n) * * Purpose: * @@ -84,11 +84,11 @@ .text -ENTRY(__copy_from_user) +ENTRY(___copy_from_user) #include "copy_template.S" -ENDPROC(__copy_from_user) +ENDPROC(___copy_from_user) .section .fixup,"ax" .align 0 diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/lib/copy_page.S linux-2.6.32.59-pax/arch/arm/lib/copy_page.S --- linux-2.6.32.59/arch/arm/lib/copy_page.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/lib/copy_page.S 2012-03-13 13:15:34.284098029 +0100 @@ -10,6 +10,7 @@ * ASM optimised string functions */ #include +#include #include #include #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/lib/copy_to_user.S linux-2.6.32.59-pax/arch/arm/lib/copy_to_user.S --- linux-2.6.32.59/arch/arm/lib/copy_to_user.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/lib/copy_to_user.S 2012-03-13 13:15:34.284098029 +0100 @@ -16,7 +16,7 @@ /* * Prototype: * - * size_t __copy_to_user(void *to, const void *from, size_t n) + * size_t ___copy_to_user(void *to, const void *from, size_t n) * * Purpose: * @@ -88,11 +88,11 @@ .text ENTRY(__copy_to_user_std) -WEAK(__copy_to_user) +WEAK(___copy_to_user) #include "copy_template.S" -ENDPROC(__copy_to_user) +ENDPROC(___copy_to_user) .section .fixup,"ax" .align 0 diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/lib/uaccess.S linux-2.6.32.59-pax/arch/arm/lib/uaccess.S --- linux-2.6.32.59/arch/arm/lib/uaccess.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/lib/uaccess.S 2012-03-13 13:15:34.288098025 +0100 @@ -19,7 +19,7 @@ #define PAGE_SHIFT 12 -/* Prototype: int __copy_to_user(void *to, const char *from, size_t n) +/* Prototype: int ___copy_to_user(void *to, const char *from, size_t n) * Purpose : copy a block to user memory from kernel memory * Params : to - user memory * : from - kernel memory @@ -39,7 +39,7 @@ USER( strgtbt r3, [r0], #1) @ May fau sub r2, r2, ip b .Lc2u_dest_aligned -ENTRY(__copy_to_user) +ENTRY(___copy_to_user) stmfd sp!, {r2, r4 - r7, lr} cmp r2, #4 blt .Lc2u_not_enough @@ -277,14 +277,14 @@ USER( strgebt r3, [r0], #1) @ May fau ldrgtb r3, [r1], #0 USER( strgtbt r3, [r0], #1) @ May fault b .Lc2u_finished -ENDPROC(__copy_to_user) +ENDPROC(___copy_to_user) .section .fixup,"ax" .align 0 9001: ldmfd sp!, {r0, r4 - r7, pc} .previous -/* Prototype: unsigned long __copy_from_user(void *to,const void *from,unsigned long n); +/* Prototype: unsigned long ___copy_from_user(void *to,const void *from,unsigned long n); * Purpose : copy a block from user memory to kernel memory * Params : to - kernel memory * : from - user memory @@ -303,7 +303,7 @@ USER( ldrgtbt r3, [r1], #1) @ May fau sub r2, r2, ip b .Lcfu_dest_aligned -ENTRY(__copy_from_user) +ENTRY(___copy_from_user) stmfd sp!, {r0, r2, r4 - r7, lr} cmp r2, #4 blt .Lcfu_not_enough @@ -543,7 +543,7 @@ USER( ldrgebt r3, [r1], #1) @ May fau USER( ldrgtbt r3, [r1], #1) @ May fault strgtb r3, [r0], #1 b .Lcfu_finished -ENDPROC(__copy_from_user) +ENDPROC(___copy_from_user) .section .fixup,"ax" .align 0 diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/lib/uaccess_with_memcpy.c linux-2.6.32.59-pax/arch/arm/lib/uaccess_with_memcpy.c --- linux-2.6.32.59/arch/arm/lib/uaccess_with_memcpy.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/lib/uaccess_with_memcpy.c 2012-03-13 13:15:34.288098025 +0100 @@ -97,7 +97,7 @@ out: } unsigned long -__copy_to_user(void __user *to, const void *from, unsigned long n) +___copy_to_user(void __user *to, const void *from, unsigned long n) { /* * This test is stubbed out of the main function above to keep diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/mm/fault.c linux-2.6.32.59-pax/arch/arm/mm/fault.c --- linux-2.6.32.59/arch/arm/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/mm/fault.c 2012-03-13 13:15:34.288098025 +0100 @@ -166,6 +166,13 @@ __do_user_fault(struct task_struct *tsk, } #endif +#ifdef CONFIG_PAX_PAGEEXEC + if (fsr & FSR_LNX_PF) { + pax_report_fault(regs, (void *)regs->ARM_pc, (void *)regs->ARM_sp); + do_group_exit(SIGKILL); + } +#endif + tsk->thread.address = addr; tsk->thread.error_code = fsr; tsk->thread.trap_no = 14; @@ -357,6 +364,33 @@ do_page_fault(unsigned long addr, unsign } #endif /* CONFIG_MMU */ +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 20; i++) { + unsigned char c; + if (get_user(c, (__force unsigned char __user *)pc+i)) + printk(KERN_CONT "?? "); + else + printk(KERN_CONT "%02x ", c); + } + printk("\n"); + + printk(KERN_ERR "PAX: bytes at SP-4: "); + for (i = -1; i < 20; i++) { + unsigned long c; + if (get_user(c, (__force unsigned long __user *)sp+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08lx ", c); + } + printk("\n"); +} +#endif + /* * First Level Translation Fault Handler * @@ -569,6 +603,20 @@ do_PrefetchAbort(unsigned long addr, uns const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr); struct siginfo info; +#ifdef CONFIG_PAX_REFCOUNT + if (fsr_fs(ifsr) == 2) { + unsigned int bkpt; + + if (!probe_kernel_address((unsigned int *)addr, bkpt) && bkpt == 0xe12f1073) { + current->thread.error_code = ifsr; + current->thread.trap_no = 0; + pax_report_refcount_overflow(regs); + fixup_exception(regs); + return; + } + } +#endif + if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs)) return; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/arm/mm/mmap.c linux-2.6.32.59-pax/arch/arm/mm/mmap.c --- linux-2.6.32.59/arch/arm/mm/mmap.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/arm/mm/mmap.c 2012-03-13 13:15:34.288098025 +0100 @@ -63,6 +63,10 @@ arch_get_unmapped_area(struct file *filp if (len > TASK_SIZE) return -ENOMEM; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { if (do_align) addr = COLOUR_ALIGN(addr, pgoff); @@ -70,15 +74,14 @@ arch_get_unmapped_area(struct file *filp addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (len > mm->cached_hole_size) { - start_addr = addr = mm->free_area_cache; + start_addr = addr = mm->free_area_cache; } else { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; } full_search: @@ -94,14 +97,14 @@ full_search: * Start a new search - just in case we missed * some holes. */ - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; + if (start_addr != mm->mmap_base) { + start_addr = addr = mm->mmap_base; mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* * Remember the place where we stopped the search: */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/avr32/include/asm/elf.h linux-2.6.32.59-pax/arch/avr32/include/asm/elf.h --- linux-2.6.32.59/arch/avr32/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/avr32/include/asm/elf.h 2012-03-13 13:15:34.288098025 +0100 @@ -85,8 +85,14 @@ typedef struct user_fpu_struct elf_fpreg the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ -#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) +#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x00001000UL + +#define PAX_DELTA_MMAP_LEN 15 +#define PAX_DELTA_STACK_LEN 15 +#endif /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. This could be done in user space, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/avr32/include/asm/kmap_types.h linux-2.6.32.59-pax/arch/avr32/include/asm/kmap_types.h --- linux-2.6.32.59/arch/avr32/include/asm/kmap_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/avr32/include/asm/kmap_types.h 2012-03-13 13:15:34.292098030 +0100 @@ -22,7 +22,8 @@ D(10) KM_IRQ0, D(11) KM_IRQ1, D(12) KM_SOFTIRQ0, D(13) KM_SOFTIRQ1, -D(14) KM_TYPE_NR +D(14) KM_CLEARPAGE, +D(15) KM_TYPE_NR }; #undef D diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/avr32/mm/fault.c linux-2.6.32.59-pax/arch/avr32/mm/fault.c --- linux-2.6.32.59/arch/avr32/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/avr32/mm/fault.c 2012-03-13 13:15:34.292098030 +0100 @@ -41,6 +41,23 @@ static inline int notify_page_fault(stru int exception_trace = 1; +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 20; i++) { + unsigned char c; + if (get_user(c, (unsigned char *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%02x ", c); + } + printk("\n"); +} +#endif + /* * This routine handles page faults. It determines the address and the * problem, and then passes it off to one of the appropriate routines. @@ -157,6 +174,16 @@ bad_area: up_read(&mm->mmap_sem); if (user_mode(regs)) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (mm->pax_flags & MF_PAX_PAGEEXEC) { + if (ecr == ECR_PROTECTION_X || ecr == ECR_TLB_MISS_X) { + pax_report_fault(regs, (void *)regs->pc, (void *)regs->sp); + do_group_exit(SIGKILL); + } + } +#endif + if (exception_trace && printk_ratelimit()) printk("%s%s[%d]: segfault at %08lx pc %08lx " "sp %08lx ecr %lu\n", diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/frv/include/asm/atomic.h linux-2.6.32.59-pax/arch/frv/include/asm/atomic.h --- linux-2.6.32.59/arch/frv/include/asm/atomic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/frv/include/asm/atomic.h 2012-03-13 13:15:34.292098030 +0100 @@ -241,6 +241,16 @@ extern uint32_t __xchg_32(uint32_t i, vo #define atomic64_cmpxchg(v, old, new) (__cmpxchg_64(old, new, &(v)->counter)) #define atomic64_xchg(v, new) (__xchg_64(new, &(v)->counter)) +#define atomic64_read_unchecked(v) atomic64_read(v) +#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) +#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) +#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) +#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) +#define atomic64_inc_unchecked(v) atomic64_inc(v) +#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) +#define atomic64_dec_unchecked(v) atomic64_dec(v) +#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) + static __inline__ int atomic_add_unless(atomic_t *v, int a, int u) { int c, old; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/frv/include/asm/kmap_types.h linux-2.6.32.59-pax/arch/frv/include/asm/kmap_types.h --- linux-2.6.32.59/arch/frv/include/asm/kmap_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/frv/include/asm/kmap_types.h 2012-03-13 13:15:34.292098030 +0100 @@ -23,6 +23,7 @@ enum km_type { KM_IRQ1, KM_SOFTIRQ0, KM_SOFTIRQ1, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/frv/mm/elf-fdpic.c linux-2.6.32.59-pax/arch/frv/mm/elf-fdpic.c --- linux-2.6.32.59/arch/frv/mm/elf-fdpic.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/frv/mm/elf-fdpic.c 2012-03-13 13:15:34.292098030 +0100 @@ -73,8 +73,7 @@ unsigned long arch_get_unmapped_area(str if (addr) { addr = PAGE_ALIGN(addr); vma = find_vma(current->mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) goto success; } @@ -89,7 +88,7 @@ unsigned long arch_get_unmapped_area(str for (; vma; vma = vma->vm_next) { if (addr > limit) break; - if (addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) goto success; addr = vma->vm_end; } @@ -104,7 +103,7 @@ unsigned long arch_get_unmapped_area(str for (; vma; vma = vma->vm_next) { if (addr > limit) break; - if (addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) goto success; addr = vma->vm_end; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/ia32/binfmt_elf32.c linux-2.6.32.59-pax/arch/ia64/ia32/binfmt_elf32.c --- linux-2.6.32.59/arch/ia64/ia32/binfmt_elf32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/ia32/binfmt_elf32.c 2012-03-13 13:15:34.296098035 +0100 @@ -45,6 +45,13 @@ randomize_stack_top(unsigned long stack_ #define elf_read_implies_exec(ex, have_pt_gnu_stack) (!(have_pt_gnu_stack)) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL) + +#define PAX_DELTA_MMAP_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) +#define PAX_DELTA_STACK_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) +#endif + /* Ugly but avoids duplication */ #include "../../../fs/binfmt_elf.c" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/ia32/ia32priv.h linux-2.6.32.59-pax/arch/ia64/ia32/ia32priv.h --- linux-2.6.32.59/arch/ia64/ia32/ia32priv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/ia32/ia32priv.h 2012-03-13 13:15:34.296098035 +0100 @@ -296,7 +296,14 @@ typedef struct compat_siginfo { #define ELF_DATA ELFDATA2LSB #define ELF_ARCH EM_386 -#define IA32_STACK_TOP IA32_PAGE_OFFSET +#ifdef CONFIG_PAX_RANDUSTACK +#define __IA32_DELTA_STACK (current->mm->delta_stack) +#else +#define __IA32_DELTA_STACK 0UL +#endif + +#define IA32_STACK_TOP (IA32_PAGE_OFFSET - __IA32_DELTA_STACK) + #define IA32_GATE_OFFSET IA32_PAGE_OFFSET #define IA32_GATE_END IA32_PAGE_OFFSET + PAGE_SIZE diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/include/asm/atomic.h linux-2.6.32.59-pax/arch/ia64/include/asm/atomic.h --- linux-2.6.32.59/arch/ia64/include/asm/atomic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/include/asm/atomic.h 2012-03-13 13:15:34.296098035 +0100 @@ -210,6 +210,16 @@ atomic64_add_negative (__s64 i, atomic64 #define atomic64_inc(v) atomic64_add(1, (v)) #define atomic64_dec(v) atomic64_sub(1, (v)) +#define atomic64_read_unchecked(v) atomic64_read(v) +#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) +#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) +#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) +#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) +#define atomic64_inc_unchecked(v) atomic64_inc(v) +#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) +#define atomic64_dec_unchecked(v) atomic64_dec(v) +#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) + /* Atomic operations are already serializing */ #define smp_mb__before_atomic_dec() barrier() #define smp_mb__after_atomic_dec() barrier() diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/include/asm/elf.h linux-2.6.32.59-pax/arch/ia64/include/asm/elf.h --- linux-2.6.32.59/arch/ia64/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/include/asm/elf.h 2012-03-13 13:15:34.296098035 +0100 @@ -43,6 +43,13 @@ */ #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x800000000UL) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL) + +#define PAX_DELTA_MMAP_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) +#define PAX_DELTA_STACK_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13) +#endif + #define PT_IA_64_UNWIND 0x70000001 /* IA-64 relocations: */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/include/asm/pgalloc.h linux-2.6.32.59-pax/arch/ia64/include/asm/pgalloc.h --- linux-2.6.32.59/arch/ia64/include/asm/pgalloc.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/include/asm/pgalloc.h 2012-05-07 17:49:11.988114623 +0200 @@ -39,6 +39,12 @@ pgd_populate(struct mm_struct *mm, pgd_t pgd_val(*pgd_entry) = __pa(pud); } +static inline void +pgd_populate_kernel(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud) +{ + pgd_populate(mm, pgd_entry, pud); +} + static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { return quicklist_alloc(0, GFP_KERNEL, NULL); @@ -57,6 +63,12 @@ pud_populate(struct mm_struct *mm, pud_t pud_val(*pud_entry) = __pa(pmd); } +static inline void +pud_populate_kernel(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd) +{ + pud_populate(mm, pud_entry, pmd); +} + static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { return quicklist_alloc(0, GFP_KERNEL, NULL); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/include/asm/pgtable.h linux-2.6.32.59-pax/arch/ia64/include/asm/pgtable.h --- linux-2.6.32.59/arch/ia64/include/asm/pgtable.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/include/asm/pgtable.h 2012-03-13 13:15:34.296098035 +0100 @@ -12,7 +12,7 @@ * David Mosberger-Tang */ - +#include #include #include #include @@ -143,6 +143,17 @@ #define PAGE_READONLY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) #define PAGE_COPY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) #define PAGE_COPY_EXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX) + +#ifdef CONFIG_PAX_PAGEEXEC +# define PAGE_SHARED_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RW) +# define PAGE_READONLY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) +# define PAGE_COPY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_READONLY_NOEXEC PAGE_READONLY +# define PAGE_COPY_NOEXEC PAGE_COPY +#endif + #define PAGE_GATE __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX) #define PAGE_KERNEL __pgprot(__DIRTY_BITS | _PAGE_PL_0 | _PAGE_AR_RWX) #define PAGE_KERNELRX __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/include/asm/spinlock.h linux-2.6.32.59-pax/arch/ia64/include/asm/spinlock.h --- linux-2.6.32.59/arch/ia64/include/asm/spinlock.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/include/asm/spinlock.h 2012-03-13 13:15:34.300098035 +0100 @@ -72,7 +72,7 @@ static __always_inline void __ticket_spi unsigned short *p = (unsigned short *)&lock->lock + 1, tmp; asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p)); - ACCESS_ONCE(*p) = (tmp + 2) & ~1; + ACCESS_ONCE_RW(*p) = (tmp + 2) & ~1; } static __always_inline void __ticket_spin_unlock_wait(raw_spinlock_t *lock) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/include/asm/uaccess.h linux-2.6.32.59-pax/arch/ia64/include/asm/uaccess.h --- linux-2.6.32.59/arch/ia64/include/asm/uaccess.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/include/asm/uaccess.h 2012-03-13 13:15:34.300098035 +0100 @@ -257,7 +257,7 @@ __copy_from_user (void *to, const void _ const void *__cu_from = (from); \ long __cu_len = (n); \ \ - if (__access_ok(__cu_to, __cu_len, get_fs())) \ + if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_to, __cu_len, get_fs())) \ __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \ __cu_len; \ }) @@ -269,7 +269,7 @@ __copy_from_user (void *to, const void _ long __cu_len = (n); \ \ __chk_user_ptr(__cu_from); \ - if (__access_ok(__cu_from, __cu_len, get_fs())) \ + if (__cu_len > 0 && __cu_len <= INT_MAX && __access_ok(__cu_from, __cu_len, get_fs())) \ __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \ __cu_len; \ }) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/kernel/module.c linux-2.6.32.59-pax/arch/ia64/kernel/module.c --- linux-2.6.32.59/arch/ia64/kernel/module.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/kernel/module.c 2012-03-13 13:15:34.300098035 +0100 @@ -315,8 +315,7 @@ module_alloc (unsigned long size) void module_free (struct module *mod, void *module_region) { - if (mod && mod->arch.init_unw_table && - module_region == mod->module_init) { + if (mod && mod->arch.init_unw_table && module_region == mod->module_init_rx) { unw_remove_unwind_table(mod->arch.init_unw_table); mod->arch.init_unw_table = NULL; } @@ -502,15 +501,39 @@ module_frob_arch_sections (Elf_Ehdr *ehd } static inline int +in_init_rx (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_init_rx < mod->init_size_rx; +} + +static inline int +in_init_rw (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_init_rw < mod->init_size_rw; +} + +static inline int in_init (const struct module *mod, uint64_t addr) { - return addr - (uint64_t) mod->module_init < mod->init_size; + return in_init_rx(mod, addr) || in_init_rw(mod, addr); +} + +static inline int +in_core_rx (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_core_rx < mod->core_size_rx; +} + +static inline int +in_core_rw (const struct module *mod, uint64_t addr) +{ + return addr - (uint64_t) mod->module_core_rw < mod->core_size_rw; } static inline int in_core (const struct module *mod, uint64_t addr) { - return addr - (uint64_t) mod->module_core < mod->core_size; + return in_core_rx(mod, addr) || in_core_rw(mod, addr); } static inline int @@ -693,7 +716,14 @@ do_reloc (struct module *mod, uint8_t r_ break; case RV_BDREL: - val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core); + if (in_init_rx(mod, val)) + val -= (uint64_t) mod->module_init_rx; + else if (in_init_rw(mod, val)) + val -= (uint64_t) mod->module_init_rw; + else if (in_core_rx(mod, val)) + val -= (uint64_t) mod->module_core_rx; + else if (in_core_rw(mod, val)) + val -= (uint64_t) mod->module_core_rw; break; case RV_LTV: @@ -828,15 +858,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs, * addresses have been selected... */ uint64_t gp; - if (mod->core_size > MAX_LTOFF) + if (mod->core_size_rx + mod->core_size_rw > MAX_LTOFF) /* * This takes advantage of fact that SHF_ARCH_SMALL gets allocated * at the end of the module. */ - gp = mod->core_size - MAX_LTOFF / 2; + gp = mod->core_size_rx + mod->core_size_rw - MAX_LTOFF / 2; else - gp = mod->core_size / 2; - gp = (uint64_t) mod->module_core + ((gp + 7) & -8); + gp = (mod->core_size_rx + mod->core_size_rw) / 2; + gp = (uint64_t) mod->module_core_rx + ((gp + 7) & -8); mod->arch.gp = gp; DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/kernel/pci-dma.c linux-2.6.32.59-pax/arch/ia64/kernel/pci-dma.c --- linux-2.6.32.59/arch/ia64/kernel/pci-dma.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/kernel/pci-dma.c 2012-03-13 13:15:34.300098035 +0100 @@ -100,11 +100,11 @@ void __init pci_iommu_alloc(void) { dma_ops = &intel_dma_ops; - dma_ops->sync_single_for_cpu = machvec_dma_sync_single; - dma_ops->sync_sg_for_cpu = machvec_dma_sync_sg; - dma_ops->sync_single_for_device = machvec_dma_sync_single; - dma_ops->sync_sg_for_device = machvec_dma_sync_sg; - dma_ops->dma_supported = iommu_dma_supported; + *(void **)&dma_ops->sync_single_for_cpu = machvec_dma_sync_single; + *(void **)&dma_ops->sync_sg_for_cpu = machvec_dma_sync_sg; + *(void **)&dma_ops->sync_single_for_device = machvec_dma_sync_single; + *(void **)&dma_ops->sync_sg_for_device = machvec_dma_sync_sg; + *(void **)&dma_ops->dma_supported = iommu_dma_supported; /* * The order of these functions is important for diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/kernel/sys_ia64.c linux-2.6.32.59-pax/arch/ia64/kernel/sys_ia64.c --- linux-2.6.32.59/arch/ia64/kernel/sys_ia64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/kernel/sys_ia64.c 2012-03-13 13:15:34.304098035 +0100 @@ -43,6 +43,13 @@ arch_get_unmapped_area (struct file *fil if (REGION_NUMBER(addr) == RGN_HPAGE) addr = 0; #endif + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + addr = mm->free_area_cache; + else +#endif + if (!addr) addr = mm->free_area_cache; @@ -61,14 +68,14 @@ arch_get_unmapped_area (struct file *fil for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { /* At this point: (!vma || addr < vma->vm_end). */ if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) { - if (start_addr != TASK_UNMAPPED_BASE) { + if (start_addr != mm->mmap_base) { /* Start a new search --- just in case we missed some holes. */ - addr = TASK_UNMAPPED_BASE; + addr = mm->mmap_base; goto full_search; } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* Remember the address where we stopped this search: */ mm->free_area_cache = addr + len; return addr; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/kernel/vmlinux.lds.S linux-2.6.32.59-pax/arch/ia64/kernel/vmlinux.lds.S --- linux-2.6.32.59/arch/ia64/kernel/vmlinux.lds.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/kernel/vmlinux.lds.S 2012-03-13 13:15:34.304098035 +0100 @@ -190,7 +190,7 @@ SECTIONS /* Per-cpu data: */ . = ALIGN(PERCPU_PAGE_SIZE); PERCPU_VADDR(PERCPU_ADDR, :percpu) - __phys_per_cpu_start = __per_cpu_load; + __phys_per_cpu_start = per_cpu_load; . = __phys_per_cpu_start + PERCPU_PAGE_SIZE; /* ensure percpu data fits * into percpu page size */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/mm/fault.c linux-2.6.32.59-pax/arch/ia64/mm/fault.c --- linux-2.6.32.59/arch/ia64/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/mm/fault.c 2012-03-13 13:15:34.304098035 +0100 @@ -72,6 +72,23 @@ mapped_kernel_page_is_present (unsigned return pte_present(pte); } +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 8; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + void __kprobes ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *regs) { @@ -145,9 +162,23 @@ ia64_do_page_fault (unsigned long addres mask = ( (((isr >> IA64_ISR_X_BIT) & 1UL) << VM_EXEC_BIT) | (((isr >> IA64_ISR_W_BIT) & 1UL) << VM_WRITE_BIT)); - if ((vma->vm_flags & mask) != mask) + if ((vma->vm_flags & mask) != mask) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (!(vma->vm_flags & VM_EXEC) && (mask & VM_EXEC)) { + if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->cr_iip) + goto bad_area; + + up_read(&mm->mmap_sem); + pax_report_fault(regs, (void *)regs->cr_iip, (void *)regs->r12); + do_group_exit(SIGKILL); + } +#endif + goto bad_area; + } + survive: /* * If for any reason at all we couldn't handle the fault, make diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/mm/hugetlbpage.c linux-2.6.32.59-pax/arch/ia64/mm/hugetlbpage.c --- linux-2.6.32.59/arch/ia64/mm/hugetlbpage.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/mm/hugetlbpage.c 2012-03-13 13:15:34.304098035 +0100 @@ -172,7 +172,7 @@ unsigned long hugetlb_get_unmapped_area( /* At this point: (!vmm || addr < vmm->vm_end). */ if (REGION_OFFSET(addr) + len > RGN_MAP_LIMIT) return -ENOMEM; - if (!vmm || (addr + len) <= vmm->vm_start) + if (check_heap_stack_gap(vmm, addr, len)) return addr; addr = ALIGN(vmm->vm_end, HPAGE_SIZE); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/ia64/mm/init.c linux-2.6.32.59-pax/arch/ia64/mm/init.c --- linux-2.6.32.59/arch/ia64/mm/init.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/ia64/mm/init.c 2012-03-13 13:15:34.304098035 +0100 @@ -122,6 +122,19 @@ ia64_init_addr_space (void) vma->vm_start = current->thread.rbs_bot & PAGE_MASK; vma->vm_end = vma->vm_start + PAGE_SIZE; vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT; + +#ifdef CONFIG_PAX_PAGEEXEC + if (current->mm->pax_flags & MF_PAX_PAGEEXEC) { + vma->vm_flags &= ~VM_EXEC; + +#ifdef CONFIG_PAX_MPROTECT + if (current->mm->pax_flags & MF_PAX_MPROTECT) + vma->vm_flags &= ~VM_MAYEXEC; +#endif + + } +#endif + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); down_write(¤t->mm->mmap_sem); if (insert_vm_struct(current->mm, vma)) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/m32r/lib/usercopy.c linux-2.6.32.59-pax/arch/m32r/lib/usercopy.c --- linux-2.6.32.59/arch/m32r/lib/usercopy.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/m32r/lib/usercopy.c 2012-03-13 13:15:34.308098034 +0100 @@ -14,6 +14,9 @@ unsigned long __generic_copy_to_user(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + prefetch(from); if (access_ok(VERIFY_WRITE, to, n)) __copy_user(to,from,n); @@ -23,6 +26,9 @@ __generic_copy_to_user(void __user *to, unsigned long __generic_copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + prefetchw(to); if (access_ok(VERIFY_READ, from, n)) __copy_user_zeroing(to,from,n); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/include/asm/atomic.h linux-2.6.32.59-pax/arch/mips/include/asm/atomic.h --- linux-2.6.32.59/arch/mips/include/asm/atomic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/include/asm/atomic.h 2012-03-13 13:15:34.308098034 +0100 @@ -21,6 +21,10 @@ #include #include +#ifdef CONFIG_GENERIC_ATOMIC64 +#include +#endif + #define ATOMIC_INIT(i) { (i) } /* @@ -782,6 +786,16 @@ static __inline__ int atomic64_add_unles */ #define atomic64_add_negative(i, v) (atomic64_add_return(i, (v)) < 0) +#define atomic64_read_unchecked(v) atomic64_read(v) +#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) +#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) +#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) +#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) +#define atomic64_inc_unchecked(v) atomic64_inc(v) +#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) +#define atomic64_dec_unchecked(v) atomic64_dec(v) +#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) + #endif /* CONFIG_64BIT */ /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/include/asm/elf.h linux-2.6.32.59-pax/arch/mips/include/asm/elf.h --- linux-2.6.32.59/arch/mips/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/include/asm/elf.h 2012-03-13 13:15:34.308098034 +0100 @@ -368,4 +368,11 @@ extern int dump_task_fpu(struct task_str #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) #endif +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT_ADDR) ? 0x00400000UL : 0x00400000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#endif + #endif /* _ASM_ELF_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/include/asm/page.h linux-2.6.32.59-pax/arch/mips/include/asm/page.h --- linux-2.6.32.59/arch/mips/include/asm/page.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/include/asm/page.h 2012-03-13 13:15:34.312098033 +0100 @@ -93,7 +93,7 @@ extern void copy_user_highpage(struct pa #ifdef CONFIG_CPU_MIPS32 typedef struct { unsigned long pte_low, pte_high; } pte_t; #define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32)) - #define __pte(x) ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; }) + #define __pte(x) ({ pte_t __pte = {(x), (x) >> 32}; __pte; }) #else typedef struct { unsigned long long pte; } pte_t; #define pte_val(x) ((x).pte) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/include/asm/pgalloc.h linux-2.6.32.59-pax/arch/mips/include/asm/pgalloc.h --- linux-2.6.32.59/arch/mips/include/asm/pgalloc.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/include/asm/pgalloc.h 2012-05-07 17:49:11.992114623 +0200 @@ -37,6 +37,11 @@ static inline void pud_populate(struct m { set_pud(pud, __pud((unsigned long)pmd)); } + +static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + pud_populate(mm, pud, pmd); +} #endif /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/include/asm/system.h linux-2.6.32.59-pax/arch/mips/include/asm/system.h --- linux-2.6.32.59/arch/mips/include/asm/system.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/include/asm/system.h 2012-03-13 13:15:34.312098033 +0100 @@ -230,6 +230,6 @@ extern void per_cpu_trap_init(void); */ #define __ARCH_WANT_UNLOCKED_CTXSW -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ~0xfUL) #endif /* _ASM_SYSTEM_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/Kconfig linux-2.6.32.59-pax/arch/mips/Kconfig --- linux-2.6.32.59/arch/mips/Kconfig 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/Kconfig 2012-03-13 13:15:34.312098033 +0100 @@ -5,6 +5,7 @@ config MIPS select HAVE_IDE select HAVE_OPROFILE select HAVE_ARCH_KGDB + select GENERIC_ATOMIC64 if !64BIT # Horrible source of confusion. Die, die, die ... select EMBEDDED select RTC_LIB if !LEMOTE_FULOONG2E diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/kernel/binfmt_elfn32.c linux-2.6.32.59-pax/arch/mips/kernel/binfmt_elfn32.c --- linux-2.6.32.59/arch/mips/kernel/binfmt_elfn32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/kernel/binfmt_elfn32.c 2012-03-13 13:15:34.312098033 +0100 @@ -50,6 +50,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N #undef ELF_ET_DYN_BASE #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT_ADDR) ? 0x00400000UL : 0x00400000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#endif + #include #include #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/kernel/binfmt_elfo32.c linux-2.6.32.59-pax/arch/mips/kernel/binfmt_elfo32.c --- linux-2.6.32.59/arch/mips/kernel/binfmt_elfo32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/kernel/binfmt_elfo32.c 2012-03-13 13:15:34.316098033 +0100 @@ -52,6 +52,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_N #undef ELF_ET_DYN_BASE #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT_ADDR) ? 0x00400000UL : 0x00400000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT_ADDR) ? 27-PAGE_SHIFT : 36-PAGE_SHIFT) +#endif + #include /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/kernel/process.c linux-2.6.32.59-pax/arch/mips/kernel/process.c --- linux-2.6.32.59/arch/mips/kernel/process.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/kernel/process.c 2012-03-13 13:15:34.316098033 +0100 @@ -470,15 +470,3 @@ unsigned long get_wchan(struct task_stru out: return pc; } - -/* - * Don't forget that the stack pointer must be aligned on a 8 bytes - * boundary for 32-bits ABI and 16 bytes for 64-bits ABI. - */ -unsigned long arch_align_stack(unsigned long sp) -{ - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() & ~PAGE_MASK; - - return sp & ALMASK; -} diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/kernel/syscall.c linux-2.6.32.59-pax/arch/mips/kernel/syscall.c --- linux-2.6.32.59/arch/mips/kernel/syscall.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/kernel/syscall.c 2012-03-13 13:15:34.316098033 +0100 @@ -102,17 +102,21 @@ unsigned long arch_get_unmapped_area(str do_color_align = 0; if (filp || (flags & MAP_SHARED)) do_color_align = 1; + +#ifdef CONFIG_PAX_RANDMMAP + if (!(current->mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { if (do_color_align) addr = COLOUR_ALIGN(addr, pgoff); else addr = PAGE_ALIGN(addr); vmm = find_vma(current->mm, addr); - if (task_size - len >= addr && - (!vmm || addr + len <= vmm->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vmm, addr, len)) return addr; } - addr = TASK_UNMAPPED_BASE; + addr = current->mm->mmap_base; if (do_color_align) addr = COLOUR_ALIGN(addr, pgoff); else @@ -122,7 +126,7 @@ unsigned long arch_get_unmapped_area(str /* At this point: (!vmm || addr < vmm->vm_end). */ if (task_size - len < addr) return -ENOMEM; - if (!vmm || addr + len <= vmm->vm_start) + if (check_heap_stack_gap(vmm, addr, len)) return addr; addr = vmm->vm_end; if (do_color_align) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/mips/mm/fault.c linux-2.6.32.59-pax/arch/mips/mm/fault.c --- linux-2.6.32.59/arch/mips/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/mips/mm/fault.c 2012-03-13 13:15:34.316098033 +0100 @@ -26,6 +26,23 @@ #include #include /* For VMALLOC_END */ +#ifdef CONFIG_PAX_PAGEEXEC +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + /* * This routine handles page faults. It determines the address, * and the problem, and then passes it off to one of the appropriate diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/include/asm/atomic.h linux-2.6.32.59-pax/arch/parisc/include/asm/atomic.h --- linux-2.6.32.59/arch/parisc/include/asm/atomic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/include/asm/atomic.h 2012-03-13 13:15:34.320098033 +0100 @@ -336,6 +336,16 @@ static __inline__ int atomic64_add_unles #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) +#define atomic64_read_unchecked(v) atomic64_read(v) +#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) +#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) +#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) +#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) +#define atomic64_inc_unchecked(v) atomic64_inc(v) +#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) +#define atomic64_dec_unchecked(v) atomic64_dec(v) +#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) + #else /* CONFIG_64BIT */ #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/include/asm/elf.h linux-2.6.32.59-pax/arch/parisc/include/asm/elf.h --- linux-2.6.32.59/arch/parisc/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/include/asm/elf.h 2012-03-13 13:15:34.320098033 +0100 @@ -343,6 +343,13 @@ struct pt_regs; /* forward declaration.. #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x01000000) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x10000UL + +#define PAX_DELTA_MMAP_LEN 16 +#define PAX_DELTA_STACK_LEN 16 +#endif + /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. This could be done in user space, but it's not easy, and we've already done it here. */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/include/asm/pgalloc.h linux-2.6.32.59-pax/arch/parisc/include/asm/pgalloc.h --- linux-2.6.32.59/arch/parisc/include/asm/pgalloc.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/include/asm/pgalloc.h 2012-05-07 17:49:11.992114623 +0200 @@ -61,6 +61,11 @@ static inline void pgd_populate(struct m (__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT)); } +static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) +{ + pgd_populate(mm, pgd, pmd); +} + static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) { pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT, @@ -93,6 +98,7 @@ static inline void pmd_free(struct mm_st #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) #define pmd_free(mm, x) do { } while (0) #define pgd_populate(mm, pmd, pte) BUG() +#define pgd_populate_kernel(mm, pmd, pte) BUG() #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/include/asm/pgtable.h linux-2.6.32.59-pax/arch/parisc/include/asm/pgtable.h --- linux-2.6.32.59/arch/parisc/include/asm/pgtable.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/include/asm/pgtable.h 2012-03-13 13:15:34.320098033 +0100 @@ -207,6 +207,17 @@ #define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED) #define PAGE_COPY PAGE_EXECREAD #define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED) + +#ifdef CONFIG_PAX_PAGEEXEC +# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED) +# define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) +# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_COPY_NOEXEC PAGE_COPY +# define PAGE_READONLY_NOEXEC PAGE_READONLY +#endif + #define PAGE_KERNEL __pgprot(_PAGE_KERNEL) #define PAGE_KERNEL_RO __pgprot(_PAGE_KERNEL & ~_PAGE_WRITE) #define PAGE_KERNEL_UNC __pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/kernel/module.c linux-2.6.32.59-pax/arch/parisc/kernel/module.c --- linux-2.6.32.59/arch/parisc/kernel/module.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/kernel/module.c 2012-03-13 13:15:34.324098033 +0100 @@ -95,16 +95,38 @@ /* three functions to determine where in the module core * or init pieces the location is */ +static inline int in_init_rx(struct module *me, void *loc) +{ + return (loc >= me->module_init_rx && + loc < (me->module_init_rx + me->init_size_rx)); +} + +static inline int in_init_rw(struct module *me, void *loc) +{ + return (loc >= me->module_init_rw && + loc < (me->module_init_rw + me->init_size_rw)); +} + static inline int in_init(struct module *me, void *loc) { - return (loc >= me->module_init && - loc <= (me->module_init + me->init_size)); + return in_init_rx(me, loc) || in_init_rw(me, loc); +} + +static inline int in_core_rx(struct module *me, void *loc) +{ + return (loc >= me->module_core_rx && + loc < (me->module_core_rx + me->core_size_rx)); +} + +static inline int in_core_rw(struct module *me, void *loc) +{ + return (loc >= me->module_core_rw && + loc < (me->module_core_rw + me->core_size_rw)); } static inline int in_core(struct module *me, void *loc) { - return (loc >= me->module_core && - loc <= (me->module_core + me->core_size)); + return in_core_rx(me, loc) || in_core_rw(me, loc); } static inline int in_local(struct module *me, void *loc) @@ -364,13 +386,13 @@ int module_frob_arch_sections(CONST Elf_ } /* align things a bit */ - me->core_size = ALIGN(me->core_size, 16); - me->arch.got_offset = me->core_size; - me->core_size += gots * sizeof(struct got_entry); - - me->core_size = ALIGN(me->core_size, 16); - me->arch.fdesc_offset = me->core_size; - me->core_size += fdescs * sizeof(Elf_Fdesc); + me->core_size_rw = ALIGN(me->core_size_rw, 16); + me->arch.got_offset = me->core_size_rw; + me->core_size_rw += gots * sizeof(struct got_entry); + + me->core_size_rw = ALIGN(me->core_size_rw, 16); + me->arch.fdesc_offset = me->core_size_rw; + me->core_size_rw += fdescs * sizeof(Elf_Fdesc); me->arch.got_max = gots; me->arch.fdesc_max = fdescs; @@ -388,7 +410,7 @@ static Elf64_Word get_got(struct module BUG_ON(value == 0); - got = me->module_core + me->arch.got_offset; + got = me->module_core_rw + me->arch.got_offset; for (i = 0; got[i].addr; i++) if (got[i].addr == value) goto out; @@ -406,7 +428,7 @@ static Elf64_Word get_got(struct module #ifdef CONFIG_64BIT static Elf_Addr get_fdesc(struct module *me, unsigned long value) { - Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset; + Elf_Fdesc *fdesc = me->module_core_rw + me->arch.fdesc_offset; if (!value) { printk(KERN_ERR "%s: zero OPD requested!\n", me->name); @@ -424,7 +446,7 @@ static Elf_Addr get_fdesc(struct module /* Create new one */ fdesc->addr = value; - fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset; + fdesc->gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; return (Elf_Addr)fdesc; } #endif /* CONFIG_64BIT */ @@ -848,7 +870,7 @@ register_unwind_table(struct module *me, table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr; end = table + sechdrs[me->arch.unwind_section].sh_size; - gp = (Elf_Addr)me->module_core + me->arch.got_offset; + gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset; DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n", me->arch.unwind_section, table, end, gp); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/kernel/sys_parisc.c linux-2.6.32.59-pax/arch/parisc/kernel/sys_parisc.c --- linux-2.6.32.59/arch/parisc/kernel/sys_parisc.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/kernel/sys_parisc.c 2012-03-13 13:15:34.324098033 +0100 @@ -43,7 +43,7 @@ static unsigned long get_unshared_area(u /* At this point: (!vma || addr < vma->vm_end). */ if (TASK_SIZE - len < addr) return -ENOMEM; - if (!vma || addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) return addr; addr = vma->vm_end; } @@ -79,7 +79,7 @@ static unsigned long get_shared_area(str /* At this point: (!vma || addr < vma->vm_end). */ if (TASK_SIZE - len < addr) return -ENOMEM; - if (!vma || addr + len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) return addr; addr = DCACHE_ALIGN(vma->vm_end - offset) + offset; if (addr < vma->vm_end) /* handle wraparound */ @@ -98,7 +98,7 @@ unsigned long arch_get_unmapped_area(str if (flags & MAP_FIXED) return addr; if (!addr) - addr = TASK_UNMAPPED_BASE; + addr = current->mm->mmap_base; if (filp) { addr = get_shared_area(filp->f_mapping, addr, len, pgoff); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/kernel/traps.c linux-2.6.32.59-pax/arch/parisc/kernel/traps.c --- linux-2.6.32.59/arch/parisc/kernel/traps.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/kernel/traps.c 2012-03-13 13:15:34.324098033 +0100 @@ -733,9 +733,7 @@ void notrace handle_interruption(int cod down_read(¤t->mm->mmap_sem); vma = find_vma(current->mm,regs->iaoq[0]); - if (vma && (regs->iaoq[0] >= vma->vm_start) - && (vma->vm_flags & VM_EXEC)) { - + if (vma && (regs->iaoq[0] >= vma->vm_start)) { fault_address = regs->iaoq[0]; fault_space = regs->iasq[0]; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/parisc/mm/fault.c linux-2.6.32.59-pax/arch/parisc/mm/fault.c --- linux-2.6.32.59/arch/parisc/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/parisc/mm/fault.c 2012-03-13 13:15:34.328098033 +0100 @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -52,7 +53,7 @@ DEFINE_PER_CPU(struct exception_data, ex static unsigned long parisc_acctyp(unsigned long code, unsigned int inst) { - if (code == 6 || code == 16) + if (code == 6 || code == 7 || code == 16) return VM_EXEC; switch (inst & 0xf0000000) { @@ -138,6 +139,116 @@ parisc_acctyp(unsigned long code, unsign } #endif +#ifdef CONFIG_PAX_PAGEEXEC +/* + * PaX: decide what to do with offenders (instruction_pointer(regs) = fault address) + * + * returns 1 when task should be killed + * 2 when rt_sigreturn trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: unpatched PLT emulation */ + unsigned int bl, depwi; + + err = get_user(bl, (unsigned int *)instruction_pointer(regs)); + err |= get_user(depwi, (unsigned int *)(instruction_pointer(regs)+4)); + + if (err) + break; + + if (bl == 0xEA9F1FDDU && depwi == 0xD6801C1EU) { + unsigned int ldw, bv, ldw2, addr = instruction_pointer(regs)-12; + + err = get_user(ldw, (unsigned int *)addr); + err |= get_user(bv, (unsigned int *)(addr+4)); + err |= get_user(ldw2, (unsigned int *)(addr+8)); + + if (err) + break; + + if (ldw == 0x0E801096U && + bv == 0xEAC0C000U && + ldw2 == 0x0E881095U) + { + unsigned int resolver, map; + + err = get_user(resolver, (unsigned int *)(instruction_pointer(regs)+8)); + err |= get_user(map, (unsigned int *)(instruction_pointer(regs)+12)); + if (err) + break; + + regs->gr[20] = instruction_pointer(regs)+8; + regs->gr[21] = map; + regs->gr[22] = resolver; + regs->iaoq[0] = resolver | 3UL; + regs->iaoq[1] = regs->iaoq[0] + 4; + return 3; + } + } + } while (0); +#endif + +#ifdef CONFIG_PAX_EMUTRAMP + +#ifndef CONFIG_PAX_EMUSIGRT + if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) + return 1; +#endif + + do { /* PaX: rt_sigreturn emulation */ + unsigned int ldi1, ldi2, bel, nop; + + err = get_user(ldi1, (unsigned int *)instruction_pointer(regs)); + err |= get_user(ldi2, (unsigned int *)(instruction_pointer(regs)+4)); + err |= get_user(bel, (unsigned int *)(instruction_pointer(regs)+8)); + err |= get_user(nop, (unsigned int *)(instruction_pointer(regs)+12)); + + if (err) + break; + + if ((ldi1 == 0x34190000U || ldi1 == 0x34190002U) && + ldi2 == 0x3414015AU && + bel == 0xE4008200U && + nop == 0x08000240U) + { + regs->gr[25] = (ldi1 & 2) >> 1; + regs->gr[20] = __NR_rt_sigreturn; + regs->gr[31] = regs->iaoq[1] + 16; + regs->sr[0] = regs->iasq[1]; + regs->iaoq[0] = 0x100UL; + regs->iaoq[1] = regs->iaoq[0] + 4; + regs->iasq[0] = regs->sr[2]; + regs->iasq[1] = regs->sr[2]; + return 2; + } + } while (0); +#endif + + return 1; +} + +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + int fixup_exception(struct pt_regs *regs) { const struct exception_table_entry *fix; @@ -192,8 +303,33 @@ good_area: acc_type = parisc_acctyp(code,regs->iir); - if ((vma->vm_flags & acc_type) != acc_type) + if ((vma->vm_flags & acc_type) != acc_type) { + +#ifdef CONFIG_PAX_PAGEEXEC + if ((mm->pax_flags & MF_PAX_PAGEEXEC) && (acc_type & VM_EXEC) && + (address & ~3UL) == instruction_pointer(regs)) + { + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 3: + return; +#endif + +#ifdef CONFIG_PAX_EMUTRAMP + case 2: + return; +#endif + + } + pax_report_fault(regs, (void *)instruction_pointer(regs), (void *)regs->gr[30]); + do_group_exit(SIGKILL); + } +#endif + goto bad_area; + } /* * If for any reason at all we couldn't handle the fault, make diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/elf.h linux-2.6.32.59-pax/arch/powerpc/include/asm/elf.h --- linux-2.6.32.59/arch/powerpc/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/elf.h 2012-03-13 13:15:34.328098033 +0100 @@ -179,8 +179,19 @@ typedef elf_fpreg_t elf_vsrreghalf_t32[E the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ -extern unsigned long randomize_et_dyn(unsigned long base); -#define ELF_ET_DYN_BASE (randomize_et_dyn(0x20000000)) +#define ELF_ET_DYN_BASE (0x20000000) + +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (0x10000000UL) + +#ifdef __powerpc64__ +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT) ? 16 : 28) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT) ? 16 : 28) +#else +#define PAX_DELTA_MMAP_LEN 15 +#define PAX_DELTA_STACK_LEN 15 +#endif +#endif /* * Our registers are always unsigned longs, whether we're a 32 bit @@ -275,9 +286,6 @@ extern int arch_setup_additional_pages(s (0x7ff >> (PAGE_SHIFT - 12)) : \ (0x3ffff >> (PAGE_SHIFT - 12))) -extern unsigned long arch_randomize_brk(struct mm_struct *mm); -#define arch_randomize_brk arch_randomize_brk - #endif /* __KERNEL__ */ /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/kmap_types.h linux-2.6.32.59-pax/arch/powerpc/include/asm/kmap_types.h --- linux-2.6.32.59/arch/powerpc/include/asm/kmap_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/kmap_types.h 2012-03-13 13:15:34.332098033 +0100 @@ -26,6 +26,7 @@ enum km_type { KM_SOFTIRQ1, KM_PPC_SYNC_PAGE, KM_PPC_SYNC_ICACHE, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/page_64.h linux-2.6.32.59-pax/arch/powerpc/include/asm/page_64.h --- linux-2.6.32.59/arch/powerpc/include/asm/page_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/page_64.h 2012-03-13 13:15:34.336098033 +0100 @@ -180,15 +180,18 @@ do { \ * stack by default, so in the absense of a PT_GNU_STACK program header * we turn execute permission off. */ -#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#define VM_STACK_DEFAULT_FLAGS32 \ + (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ + VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#ifndef CONFIG_PAX_PAGEEXEC #define VM_STACK_DEFAULT_FLAGS \ (test_thread_flag(TIF_32BIT) ? \ VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64) +#endif #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/page.h linux-2.6.32.59-pax/arch/powerpc/include/asm/page.h --- linux-2.6.32.59/arch/powerpc/include/asm/page.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/page.h 2012-03-13 13:15:34.336098033 +0100 @@ -116,8 +116,9 @@ extern phys_addr_t kernstart_addr; * and needs to be executable. This means the whole heap ends * up being executable. */ -#define VM_DATA_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#define VM_DATA_DEFAULT_FLAGS32 \ + (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ + VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) @@ -145,6 +146,9 @@ extern phys_addr_t kernstart_addr; #define is_kernel_addr(x) ((x) >= PAGE_OFFSET) #endif +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) + #ifndef __ASSEMBLY__ #undef STRICT_MM_TYPECHECKS diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/pgalloc-64.h linux-2.6.32.59-pax/arch/powerpc/include/asm/pgalloc-64.h --- linux-2.6.32.59/arch/powerpc/include/asm/pgalloc-64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/pgalloc-64.h 2012-05-07 17:49:11.996114623 +0200 @@ -37,6 +37,7 @@ static inline void pgd_free(struct mm_st #ifndef CONFIG_PPC_64K_PAGES #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) +#define pgd_populate_kernel(MM, PGD, PUD) pgd_populate((MM), (PGD), (PUD)) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { @@ -54,6 +55,11 @@ static inline void pud_populate(struct m pud_set(pud, (unsigned long)pmd); } +static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + pud_populate(mm, pud, pmd); +} + #define pmd_populate(mm, pmd, pte_page) \ pmd_populate_kernel(mm, pmd, page_address(pte_page)) #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) @@ -63,6 +69,7 @@ static inline void pud_populate(struct m #else /* CONFIG_PPC_64K_PAGES */ #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) +#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd)) static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/pgtable.h linux-2.6.32.59-pax/arch/powerpc/include/asm/pgtable.h --- linux-2.6.32.59/arch/powerpc/include/asm/pgtable.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/pgtable.h 2012-03-13 13:15:34.340098032 +0100 @@ -2,6 +2,7 @@ #define _ASM_POWERPC_PGTABLE_H #ifdef __KERNEL__ +#include #ifndef __ASSEMBLY__ #include /* For TASK_SIZE */ #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/pte-hash32.h linux-2.6.32.59-pax/arch/powerpc/include/asm/pte-hash32.h --- linux-2.6.32.59/arch/powerpc/include/asm/pte-hash32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/pte-hash32.h 2012-03-13 13:15:34.340098032 +0100 @@ -21,6 +21,7 @@ #define _PAGE_FILE 0x004 /* when !present: nonlinear file mapping */ #define _PAGE_USER 0x004 /* usermode access allowed */ #define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */ +#define _PAGE_EXEC _PAGE_GUARDED #define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */ #define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */ #define _PAGE_WRITETHRU 0x040 /* W: cache write-through */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/reg.h linux-2.6.32.59-pax/arch/powerpc/include/asm/reg.h --- linux-2.6.32.59/arch/powerpc/include/asm/reg.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/reg.h 2012-03-13 13:15:34.340098032 +0100 @@ -191,6 +191,7 @@ #define SPRN_DBCR 0x136 /* e300 Data Breakpoint Control Reg */ #define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */ #define DSISR_NOHPTE 0x40000000 /* no translation found */ +#define DSISR_GUARDED 0x10000000 /* fetch from guarded storage */ #define DSISR_PROTFAULT 0x08000000 /* protection fault */ #define DSISR_ISSTORE 0x02000000 /* access was a store */ #define DSISR_DABRMATCH 0x00400000 /* hit data breakpoint */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/system.h linux-2.6.32.59-pax/arch/powerpc/include/asm/system.h --- linux-2.6.32.59/arch/powerpc/include/asm/system.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/system.h 2012-03-13 13:15:34.344098032 +0100 @@ -531,7 +531,7 @@ __cmpxchg_local(volatile void *ptr, unsi #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) #endif -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ~0xfUL) /* Used in very early kernel initialization. */ extern unsigned long reloc_offset(void); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/include/asm/uaccess.h linux-2.6.32.59-pax/arch/powerpc/include/asm/uaccess.h --- linux-2.6.32.59/arch/powerpc/include/asm/uaccess.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/include/asm/uaccess.h 2012-03-13 13:15:34.344098032 +0100 @@ -13,6 +13,8 @@ #define VERIFY_READ 0 #define VERIFY_WRITE 1 +extern void check_object_size(const void *ptr, unsigned long n, bool to); + /* * The fs value determines whether argument validity checking should be * performed or not. If get_fs() == USER_DS, checking is performed, with @@ -327,52 +329,6 @@ do { \ extern unsigned long __copy_tofrom_user(void __user *to, const void __user *from, unsigned long size); -#ifndef __powerpc64__ - -static inline unsigned long copy_from_user(void *to, - const void __user *from, unsigned long n) -{ - unsigned long over; - - if (access_ok(VERIFY_READ, from, n)) - return __copy_tofrom_user((__force void __user *)to, from, n); - if ((unsigned long)from < TASK_SIZE) { - over = (unsigned long)from + n - TASK_SIZE; - return __copy_tofrom_user((__force void __user *)to, from, - n - over) + over; - } - return n; -} - -static inline unsigned long copy_to_user(void __user *to, - const void *from, unsigned long n) -{ - unsigned long over; - - if (access_ok(VERIFY_WRITE, to, n)) - return __copy_tofrom_user(to, (__force void __user *)from, n); - if ((unsigned long)to < TASK_SIZE) { - over = (unsigned long)to + n - TASK_SIZE; - return __copy_tofrom_user(to, (__force void __user *)from, - n - over) + over; - } - return n; -} - -#else /* __powerpc64__ */ - -#define __copy_in_user(to, from, size) \ - __copy_tofrom_user((to), (from), (size)) - -extern unsigned long copy_from_user(void *to, const void __user *from, - unsigned long n); -extern unsigned long copy_to_user(void __user *to, const void *from, - unsigned long n); -extern unsigned long copy_in_user(void __user *to, const void __user *from, - unsigned long n); - -#endif /* __powerpc64__ */ - static inline unsigned long __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) { @@ -396,6 +352,10 @@ static inline unsigned long __copy_from_ if (ret == 0) return 0; } + + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + return __copy_tofrom_user((__force void __user *)to, from, n); } @@ -422,6 +382,10 @@ static inline unsigned long __copy_to_us if (ret == 0) return 0; } + + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + return __copy_tofrom_user(to, (__force const void __user *)from, n); } @@ -439,6 +403,92 @@ static inline unsigned long __copy_to_us return __copy_to_user_inatomic(to, from, size); } +#ifndef __powerpc64__ + +static inline unsigned long __must_check copy_from_user(void *to, + const void __user *from, unsigned long n) +{ + unsigned long over; + + if ((long)n < 0) + return n; + + if (access_ok(VERIFY_READ, from, n)) { + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + return __copy_tofrom_user((__force void __user *)to, from, n); + } + if ((unsigned long)from < TASK_SIZE) { + over = (unsigned long)from + n - TASK_SIZE; + if (!__builtin_constant_p(n - over)) + check_object_size(to, n - over, false); + return __copy_tofrom_user((__force void __user *)to, from, + n - over) + over; + } + return n; +} + +static inline unsigned long __must_check copy_to_user(void __user *to, + const void *from, unsigned long n) +{ + unsigned long over; + + if ((long)n < 0) + return n; + + if (access_ok(VERIFY_WRITE, to, n)) { + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + return __copy_tofrom_user(to, (__force void __user *)from, n); + } + if ((unsigned long)to < TASK_SIZE) { + over = (unsigned long)to + n - TASK_SIZE; + if (!__builtin_constant_p(n)) + check_object_size(from, n - over, true); + return __copy_tofrom_user(to, (__force void __user *)from, + n - over) + over; + } + return n; +} + +#else /* __powerpc64__ */ + +#define __copy_in_user(to, from, size) \ + __copy_tofrom_user((to), (from), (size)) + +static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) +{ + if ((long)n < 0 || n > INT_MAX) + return n; + + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + + if (likely(access_ok(VERIFY_READ, from, n))) + n = __copy_from_user(to, from, n); + else + memset(to, 0, n); + return n; +} + +static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) +{ + if ((long)n < 0 || n > INT_MAX) + return n; + + if (likely(access_ok(VERIFY_WRITE, to, n))) { + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + n = __copy_to_user(to, from, n); + } + return n; +} + +extern unsigned long copy_in_user(void __user *to, const void __user *from, + unsigned long n); + +#endif /* __powerpc64__ */ + extern unsigned long __clear_user(void __user *addr, unsigned long size); static inline unsigned long clear_user(void __user *addr, unsigned long size) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/exceptions-64e.S linux-2.6.32.59-pax/arch/powerpc/kernel/exceptions-64e.S --- linux-2.6.32.59/arch/powerpc/kernel/exceptions-64e.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/exceptions-64e.S 2012-03-13 13:15:34.344098032 +0100 @@ -455,6 +455,7 @@ storage_fault_common: std r14,_DAR(r1) std r15,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD + bl .save_nvgprs mr r4,r14 mr r5,r15 ld r14,PACA_EXGEN+EX_R14(r13) @@ -464,8 +465,7 @@ storage_fault_common: cmpdi r3,0 bne- 1f b .ret_from_except_lite -1: bl .save_nvgprs - mr r5,r3 +1: mr r5,r3 addi r3,r1,STACK_FRAME_OVERHEAD ld r4,_DAR(r1) bl .bad_page_fault diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/exceptions-64s.S linux-2.6.32.59-pax/arch/powerpc/kernel/exceptions-64s.S --- linux-2.6.32.59/arch/powerpc/kernel/exceptions-64s.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/exceptions-64s.S 2012-03-13 13:15:34.344098032 +0100 @@ -818,10 +818,10 @@ handle_page_fault: 11: ld r4,_DAR(r1) ld r5,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD + bl .save_nvgprs bl .do_page_fault cmpdi r3,0 beq+ 13f - bl .save_nvgprs mr r5,r3 addi r3,r1,STACK_FRAME_OVERHEAD lwz r4,_DAR(r1) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/irq.c linux-2.6.32.59-pax/arch/powerpc/kernel/irq.c --- linux-2.6.32.59/arch/powerpc/kernel/irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/irq.c 2012-03-13 13:15:34.348098032 +0100 @@ -490,9 +490,6 @@ struct irq_host *irq_alloc_host(struct d host->ops = ops; host->of_node = of_node_get(of_node); - if (host->ops->match == NULL) - host->ops->match = default_irq_host_match; - spin_lock_irqsave(&irq_big_lock, flags); /* If it's a legacy controller, check for duplicates and @@ -567,7 +564,12 @@ struct irq_host *irq_find_host(struct de */ spin_lock_irqsave(&irq_big_lock, flags); list_for_each_entry(h, &irq_hosts, link) - if (h->ops->match(h, node)) { + if (h->ops->match) { + if (h->ops->match(h, node)) { + found = h; + break; + } + } else if (default_irq_host_match(h, node)) { found = h; break; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/kgdb.c linux-2.6.32.59-pax/arch/powerpc/kernel/kgdb.c --- linux-2.6.32.59/arch/powerpc/kernel/kgdb.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/kgdb.c 2012-03-13 13:15:34.348098032 +0100 @@ -126,7 +126,7 @@ static int kgdb_handle_breakpoint(struct if (kgdb_handle_exception(0, SIGTRAP, 0, regs) != 0) return 0; - if (*(u32 *) (regs->nip) == *(u32 *) (&arch_kgdb_ops.gdb_bpt_instr)) + if (*(u32 *) (regs->nip) == *(const u32 *) (&arch_kgdb_ops.gdb_bpt_instr)) regs->nip += 4; return 1; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/module_32.c linux-2.6.32.59-pax/arch/powerpc/kernel/module_32.c --- linux-2.6.32.59/arch/powerpc/kernel/module_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/module_32.c 2012-03-13 13:15:34.348098032 +0100 @@ -162,7 +162,7 @@ int module_frob_arch_sections(Elf32_Ehdr me->arch.core_plt_section = i; } if (!me->arch.core_plt_section || !me->arch.init_plt_section) { - printk("Module doesn't contain .plt or .init.plt sections.\n"); + printk("Module %s doesn't contain .plt or .init.plt sections.\n", me->name); return -ENOEXEC; } @@ -203,11 +203,16 @@ static uint32_t do_plt_call(void *locati DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location); /* Init, or core PLT? */ - if (location >= mod->module_core - && location < mod->module_core + mod->core_size) + if ((location >= mod->module_core_rx && location < mod->module_core_rx + mod->core_size_rx) || + (location >= mod->module_core_rw && location < mod->module_core_rw + mod->core_size_rw)) entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr; - else + else if ((location >= mod->module_init_rx && location < mod->module_init_rx + mod->init_size_rx) || + (location >= mod->module_init_rw && location < mod->module_init_rw + mod->init_size_rw)) entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr; + else { + printk(KERN_ERR "%s: invalid R_PPC_REL24 entry found\n", mod->name); + return ~0UL; + } /* Find this entry, or if that fails, the next avail. entry */ while (entry->jump[0]) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/module.c linux-2.6.32.59-pax/arch/powerpc/kernel/module.c --- linux-2.6.32.59/arch/powerpc/kernel/module.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/module.c 2012-03-13 13:15:34.352098032 +0100 @@ -31,11 +31,24 @@ LIST_HEAD(module_bug_list); +#ifdef CONFIG_PAX_KERNEXEC void *module_alloc(unsigned long size) { if (size == 0) return NULL; + return vmalloc(size); +} + +void *module_alloc_exec(unsigned long size) +#else +void *module_alloc(unsigned long size) +#endif + +{ + if (size == 0) + return NULL; + return vmalloc_exec(size); } @@ -45,6 +58,13 @@ void module_free(struct module *mod, voi vfree(module_region); } +#ifdef CONFIG_PAX_KERNEXEC +void module_free_exec(struct module *mod, void *module_region) +{ + module_free(mod, module_region); +} +#endif + static const Elf_Shdr *find_section(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, const char *name) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/process.c linux-2.6.32.59-pax/arch/powerpc/kernel/process.c --- linux-2.6.32.59/arch/powerpc/kernel/process.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/process.c 2012-03-13 13:15:34.352098032 +0100 @@ -1134,58 +1134,3 @@ void thread_info_cache_init(void) } #endif /* THREAD_SHIFT < PAGE_SHIFT */ - -unsigned long arch_align_stack(unsigned long sp) -{ - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() & ~PAGE_MASK; - return sp & ~0xf; -} - -static inline unsigned long brk_rnd(void) -{ - unsigned long rnd = 0; - - /* 8MB for 32bit, 1GB for 64bit */ - if (is_32bit_task()) - rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT))); - else - rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT))); - - return rnd << PAGE_SHIFT; -} - -unsigned long arch_randomize_brk(struct mm_struct *mm) -{ - unsigned long base = mm->brk; - unsigned long ret; - -#ifdef CONFIG_PPC_STD_MMU_64 - /* - * If we are using 1TB segments and we are allowed to randomise - * the heap, we can put it above 1TB so it is backed by a 1TB - * segment. Otherwise the heap will be in the bottom 1TB - * which always uses 256MB segments and this may result in a - * performance penalty. - */ - if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T)) - base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T); -#endif - - ret = PAGE_ALIGN(base + brk_rnd()); - - if (ret < mm->brk) - return mm->brk; - - return ret; -} - -unsigned long randomize_et_dyn(unsigned long base) -{ - unsigned long ret = PAGE_ALIGN(base + brk_rnd()); - - if (ret < base) - return base; - - return ret; -} diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/signal_32.c linux-2.6.32.59-pax/arch/powerpc/kernel/signal_32.c --- linux-2.6.32.59/arch/powerpc/kernel/signal_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/signal_32.c 2012-03-13 13:15:34.352098032 +0100 @@ -857,7 +857,7 @@ int handle_rt_signal32(unsigned long sig /* Save user registers on the stack */ frame = &rt_sf->uc.uc_mcontext; addr = frame; - if (vdso32_rt_sigtramp && current->mm->context.vdso_base) { + if (vdso32_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { if (save_user_regs(regs, frame, 0, 1)) goto badframe; regs->link = current->mm->context.vdso_base + vdso32_rt_sigtramp; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/signal_64.c linux-2.6.32.59-pax/arch/powerpc/kernel/signal_64.c --- linux-2.6.32.59/arch/powerpc/kernel/signal_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/signal_64.c 2012-03-13 13:15:34.352098032 +0100 @@ -429,7 +429,7 @@ int handle_rt_signal64(int signr, struct current->thread.fpscr.val = 0; /* Set up to return from userspace. */ - if (vdso64_rt_sigtramp && current->mm->context.vdso_base) { + if (vdso64_rt_sigtramp && current->mm->context.vdso_base != ~0UL) { regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp; } else { err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/sys_ppc32.c linux-2.6.32.59-pax/arch/powerpc/kernel/sys_ppc32.c --- linux-2.6.32.59/arch/powerpc/kernel/sys_ppc32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/sys_ppc32.c 2012-03-13 13:15:34.356098031 +0100 @@ -563,10 +563,10 @@ asmlinkage long compat_sys_sysctl(struct if (oldlenp) { if (!error) { if (get_user(oldlen, oldlenp) || - put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp))) + put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) || + copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) error = -EFAULT; } - copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); } return error; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/vdso.c linux-2.6.32.59-pax/arch/powerpc/kernel/vdso.c --- linux-2.6.32.59/arch/powerpc/kernel/vdso.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/vdso.c 2012-03-13 13:15:34.356098031 +0100 @@ -36,6 +36,7 @@ #include #include #include +#include #include "setup.h" @@ -220,7 +221,7 @@ int arch_setup_additional_pages(struct l vdso_base = VDSO32_MBASE; #endif - current->mm->context.vdso_base = 0; + current->mm->context.vdso_base = ~0UL; /* vDSO has a problem and was disabled, just don't "enable" it for the * process @@ -240,7 +241,7 @@ int arch_setup_additional_pages(struct l vdso_base = get_unmapped_area(NULL, vdso_base, (vdso_pages << PAGE_SHIFT) + ((VDSO_ALIGNMENT - 1) & PAGE_MASK), - 0, 0); + 0, MAP_PRIVATE | MAP_EXECUTABLE); if (IS_ERR_VALUE(vdso_base)) { rc = vdso_base; goto fail_mmapsem; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/kernel/vio.c linux-2.6.32.59-pax/arch/powerpc/kernel/vio.c --- linux-2.6.32.59/arch/powerpc/kernel/vio.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/kernel/vio.c 2012-03-13 13:15:34.356098031 +0100 @@ -601,7 +601,7 @@ static void vio_dma_iommu_unmap_sg(struc vio_cmo_dealloc(viodev, alloc_size); } -struct dma_map_ops vio_dma_mapping_ops = { +static struct dma_map_ops vio_dma_mapping_ops = { .alloc_coherent = vio_dma_iommu_alloc_coherent, .free_coherent = vio_dma_iommu_free_coherent, .map_sg = vio_dma_iommu_map_sg, @@ -857,7 +857,6 @@ static void vio_cmo_bus_remove(struct vi static void vio_cmo_set_dma_ops(struct vio_dev *viodev) { - vio_dma_mapping_ops.dma_supported = dma_iommu_ops.dma_supported; viodev->dev.archdata.dma_ops = &vio_dma_mapping_ops; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/lib/usercopy_64.c linux-2.6.32.59-pax/arch/powerpc/lib/usercopy_64.c --- linux-2.6.32.59/arch/powerpc/lib/usercopy_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/lib/usercopy_64.c 2012-03-13 13:15:34.360098031 +0100 @@ -9,22 +9,6 @@ #include #include -unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) -{ - if (likely(access_ok(VERIFY_READ, from, n))) - n = __copy_from_user(to, from, n); - else - memset(to, 0, n); - return n; -} - -unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) -{ - if (likely(access_ok(VERIFY_WRITE, to, n))) - n = __copy_to_user(to, from, n); - return n; -} - unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long n) { @@ -35,7 +19,5 @@ unsigned long copy_in_user(void __user * return n; } -EXPORT_SYMBOL(copy_from_user); -EXPORT_SYMBOL(copy_to_user); EXPORT_SYMBOL(copy_in_user); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/mm/fault.c linux-2.6.32.59-pax/arch/powerpc/mm/fault.c --- linux-2.6.32.59/arch/powerpc/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/mm/fault.c 2012-03-13 13:15:34.360098031 +0100 @@ -30,6 +30,10 @@ #include #include #include +#include +#include +#include +#include #include #include @@ -40,6 +44,7 @@ #include #include #include +#include #ifdef CONFIG_KPROBES @@ -64,6 +69,33 @@ static inline int notify_page_fault(stru } #endif +#ifdef CONFIG_PAX_PAGEEXEC +/* + * PaX: decide what to do with offenders (regs->nip = fault address) + * + * returns 1 when task should be killed + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + return 1; +} + +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 5; i++) { + unsigned int c; + if (get_user(c, (unsigned int __user *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + /* * Check whether the instruction at regs->nip is a store using * an update addressing form which will update r1. @@ -134,7 +166,7 @@ int __kprobes do_page_fault(struct pt_re * indicate errors in DSISR but can validly be set in SRR1. */ if (trap == 0x400) - error_code &= 0x48200000; + error_code &= 0x58200000; else is_write = error_code & DSISR_ISSTORE; #else @@ -250,7 +282,7 @@ good_area: * "undefined". Of those that can be set, this is the only * one which seems bad. */ - if (error_code & 0x10000000) + if (error_code & DSISR_GUARDED) /* Guarded storage error. */ goto bad_area; #endif /* CONFIG_8xx */ @@ -265,7 +297,7 @@ good_area: * processors use the same I/D cache coherency mechanism * as embedded. */ - if (error_code & DSISR_PROTFAULT) + if (error_code & (DSISR_PROTFAULT | DSISR_GUARDED)) goto bad_area; #endif /* CONFIG_PPC_STD_MMU */ @@ -335,6 +367,23 @@ bad_area: bad_area_nosemaphore: /* User mode accesses cause a SIGSEGV */ if (user_mode(regs)) { + +#ifdef CONFIG_PAX_PAGEEXEC + if (mm->pax_flags & MF_PAX_PAGEEXEC) { +#ifdef CONFIG_PPC_STD_MMU + if (is_exec && (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))) { +#else + if (is_exec && regs->nip == address) { +#endif + switch (pax_handle_fetch_fault(regs)) { + } + + pax_report_fault(regs, (void *)regs->nip, (void *)regs->gpr[PT_R1]); + do_group_exit(SIGKILL); + } + } +#endif + _exception(SIGSEGV, regs, code, address); return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/mm/mmap_64.c linux-2.6.32.59-pax/arch/powerpc/mm/mmap_64.c --- linux-2.6.32.59/arch/powerpc/mm/mmap_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/mm/mmap_64.c 2012-03-13 13:15:34.360098031 +0100 @@ -99,10 +99,22 @@ void arch_pick_mmap_layout(struct mm_str */ if (mmap_is_legacy()) { mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { mm->mmap_base = mmap_base(); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/mm/slice.c linux-2.6.32.59-pax/arch/powerpc/mm/slice.c --- linux-2.6.32.59/arch/powerpc/mm/slice.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/mm/slice.c 2012-03-13 13:15:34.360098031 +0100 @@ -98,7 +98,7 @@ static int slice_area_is_free(struct mm_ if ((mm->task_size - len) < addr) return 0; vma = find_vma(mm, addr); - return (!vma || (addr + len) <= vma->vm_start); + return check_heap_stack_gap(vma, addr, len); } static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice) @@ -256,7 +256,7 @@ full_search: addr = _ALIGN_UP(addr + 1, 1ul << SLICE_HIGH_SHIFT); continue; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* * Remember the place where we stopped the search: */ @@ -313,10 +313,14 @@ static unsigned long slice_find_area_top } } - addr = mm->mmap_base; - while (addr > len) { + if (mm->mmap_base < len) + addr = -ENOMEM; + else + addr = mm->mmap_base - len; + + while (!IS_ERR_VALUE(addr)) { /* Go down by chunk size */ - addr = _ALIGN_DOWN(addr - len, 1ul << pshift); + addr = _ALIGN_DOWN(addr, 1ul << pshift); /* Check for hit with different page size */ mask = slice_range_to_mask(addr, len); @@ -336,7 +340,7 @@ static unsigned long slice_find_area_top * return with success: */ vma = find_vma(mm, addr); - if (!vma || (addr + len) <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* remember the address as a hint for next time */ if (use_cache) mm->free_area_cache = addr; @@ -348,7 +352,7 @@ static unsigned long slice_find_area_top mm->cached_hole_size = vma->vm_start - addr; /* try just below the current vma->vm_start */ - addr = vma->vm_start; + addr = skip_heap_stack_gap(vma, len); } /* @@ -426,6 +430,11 @@ unsigned long slice_get_unmapped_area(un if (fixed && addr > (mm->task_size - len)) return -EINVAL; +#ifdef CONFIG_PAX_RANDMMAP + if (!fixed && (mm->pax_flags & MF_PAX_RANDMMAP)) + addr = 0; +#endif + /* If hint, make sure it matches our alignment restrictions */ if (!fixed && addr) { addr = _ALIGN_UP(addr, 1ul << pshift); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/powerpc/platforms/pseries/Kconfig linux-2.6.32.59-pax/arch/powerpc/platforms/pseries/Kconfig --- linux-2.6.32.59/arch/powerpc/platforms/pseries/Kconfig 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/powerpc/platforms/pseries/Kconfig 2012-03-13 13:15:34.364098031 +0100 @@ -2,6 +2,8 @@ config PPC_PSERIES depends on PPC64 && PPC_BOOK3S bool "IBM pSeries & new (POWER5-based) iSeries" select MPIC + select PCI_MSI + select XICS select PPC_I8259 select PPC_RTAS select RTAS_ERROR_LOGGING diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/include/asm/atomic.h linux-2.6.32.59-pax/arch/s390/include/asm/atomic.h --- linux-2.6.32.59/arch/s390/include/asm/atomic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/s390/include/asm/atomic.h 2012-03-13 13:15:34.364098031 +0100 @@ -362,6 +362,16 @@ static inline int atomic64_add_unless(at #define atomic64_dec_and_test(_v) (atomic64_sub_return(1, _v) == 0) #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) +#define atomic64_read_unchecked(v) atomic64_read(v) +#define atomic64_set_unchecked(v, i) atomic64_set((v), (i)) +#define atomic64_add_unchecked(a, v) atomic64_add((a), (v)) +#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v)) +#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v)) +#define atomic64_inc_unchecked(v) atomic64_inc(v) +#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v) +#define atomic64_dec_unchecked(v) atomic64_dec(v) +#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n)) + #define smp_mb__before_atomic_dec() smp_mb() #define smp_mb__after_atomic_dec() smp_mb() #define smp_mb__before_atomic_inc() smp_mb() diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/include/asm/elf.h linux-2.6.32.59-pax/arch/s390/include/asm/elf.h --- linux-2.6.32.59/arch/s390/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/s390/include/asm/elf.h 2012-03-13 13:15:34.364098031 +0100 @@ -164,6 +164,13 @@ extern unsigned int vdso_enabled; that it will "exec", and that there is sufficient room for the brk. */ #define ELF_ET_DYN_BASE (STACK_TOP / 3 * 2) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_31BIT) ? 0x10000UL : 0x80000000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26) +#endif + /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/include/asm/setup.h linux-2.6.32.59-pax/arch/s390/include/asm/setup.h --- linux-2.6.32.59/arch/s390/include/asm/setup.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/s390/include/asm/setup.h 2012-03-13 13:15:34.364098031 +0100 @@ -50,13 +50,13 @@ extern unsigned long memory_end; void detect_memory_layout(struct mem_chunk chunk[]); #ifdef CONFIG_S390_SWITCH_AMODE -extern unsigned int switch_amode; +#define switch_amode (1) #else #define switch_amode (0) #endif #ifdef CONFIG_S390_EXEC_PROTECT -extern unsigned int s390_noexec; +#define s390_noexec (1) #else #define s390_noexec (0) #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/include/asm/uaccess.h linux-2.6.32.59-pax/arch/s390/include/asm/uaccess.h --- linux-2.6.32.59/arch/s390/include/asm/uaccess.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/s390/include/asm/uaccess.h 2012-03-13 13:15:34.368098031 +0100 @@ -232,6 +232,10 @@ static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n) { might_fault(); + + if ((long)n < 0) + return n; + if (access_ok(VERIFY_WRITE, to, n)) n = __copy_to_user(to, from, n); return n; @@ -257,6 +261,9 @@ copy_to_user(void __user *to, const void static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + if (__builtin_constant_p(n) && (n <= 256)) return uaccess.copy_from_user_small(n, from, to); else @@ -283,6 +290,10 @@ static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { might_fault(); + + if ((long)n < 0) + return n; + if (access_ok(VERIFY_READ, from, n)) n = __copy_from_user(to, from, n); else diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/Kconfig linux-2.6.32.59-pax/arch/s390/Kconfig --- linux-2.6.32.59/arch/s390/Kconfig 2012-03-18 17:44:12.484058357 +0100 +++ linux-2.6.32.59-pax/arch/s390/Kconfig 2012-03-18 17:44:18.440057958 +0100 @@ -197,28 +197,26 @@ config AUDIT_ARCH config S390_SWITCH_AMODE bool "Switch kernel/user addressing modes" + default y help This option allows to switch the addressing modes of kernel and user - space. The kernel parameter switch_amode=on will enable this feature, - default is disabled. Enabling this (via kernel parameter) on machines - earlier than IBM System z9-109 EC/BC will reduce system performance. + space. Enabling this on machines earlier than IBM System z9-109 EC/BC + will reduce system performance. Note that this option will also be selected by selecting the execute - protection option below. Enabling the execute protection via the - noexec kernel parameter will also switch the addressing modes, - independent of the switch_amode kernel parameter. + protection option below. Enabling the execute protection will also + switch the addressing modes, independent of this option. config S390_EXEC_PROTECT bool "Data execute protection" + default y select S390_SWITCH_AMODE help This option allows to enable a buffer overflow protection for user space programs and it also selects the addressing mode option above. - The kernel parameter noexec=on will enable this feature and also - switch the addressing modes, default is disabled. Enabling this (via - kernel parameter) on machines earlier than IBM System z9-109 EC/BC - will reduce system performance. + Enabling this on machines earlier than IBM System z9-109 EC/BC will + reduce system performance. comment "Code generation options" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/kernel/module.c linux-2.6.32.59-pax/arch/s390/kernel/module.c --- linux-2.6.32.59/arch/s390/kernel/module.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/s390/kernel/module.c 2012-03-13 13:15:34.368098031 +0100 @@ -166,11 +166,11 @@ module_frob_arch_sections(Elf_Ehdr *hdr, /* Increase core size by size of got & plt and set start offsets for got and plt. */ - me->core_size = ALIGN(me->core_size, 4); - me->arch.got_offset = me->core_size; - me->core_size += me->arch.got_size; - me->arch.plt_offset = me->core_size; - me->core_size += me->arch.plt_size; + me->core_size_rw = ALIGN(me->core_size_rw, 4); + me->arch.got_offset = me->core_size_rw; + me->core_size_rw += me->arch.got_size; + me->arch.plt_offset = me->core_size_rx; + me->core_size_rx += me->arch.plt_size; return 0; } @@ -256,7 +256,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base if (info->got_initialized == 0) { Elf_Addr *gotent; - gotent = me->module_core + me->arch.got_offset + + gotent = me->module_core_rw + me->arch.got_offset + info->got_offset; *gotent = val; info->got_initialized = 1; @@ -280,7 +280,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base else if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT) *(unsigned int *) loc = - (val + (Elf_Addr) me->module_core - loc) >> 1; + (val + (Elf_Addr) me->module_core_rw - loc) >> 1; else if (r_type == R_390_GOT64 || r_type == R_390_GOTPLT64) *(unsigned long *) loc = val; @@ -294,7 +294,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base case R_390_PLTOFF64: /* 16 bit offset from GOT to PLT. */ if (info->plt_initialized == 0) { unsigned int *ip; - ip = me->module_core + me->arch.plt_offset + + ip = me->module_core_rx + me->arch.plt_offset + info->plt_offset; #ifndef CONFIG_64BIT ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */ @@ -319,7 +319,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base val - loc + 0xffffUL < 0x1ffffeUL) || (r_type == R_390_PLT32DBL && val - loc + 0xffffffffULL < 0x1fffffffeULL))) - val = (Elf_Addr) me->module_core + + val = (Elf_Addr) me->module_core_rx + me->arch.plt_offset + info->plt_offset; val += rela->r_addend - loc; @@ -341,7 +341,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base case R_390_GOTOFF32: /* 32 bit offset to GOT. */ case R_390_GOTOFF64: /* 64 bit offset to GOT. */ val = val + rela->r_addend - - ((Elf_Addr) me->module_core + me->arch.got_offset); + ((Elf_Addr) me->module_core_rw + me->arch.got_offset); if (r_type == R_390_GOTOFF16) *(unsigned short *) loc = val; else if (r_type == R_390_GOTOFF32) @@ -351,7 +351,7 @@ apply_rela(Elf_Rela *rela, Elf_Addr base break; case R_390_GOTPC: /* 32 bit PC relative offset to GOT. */ case R_390_GOTPCDBL: /* 32 bit PC rel. off. to GOT shifted by 1. */ - val = (Elf_Addr) me->module_core + me->arch.got_offset + + val = (Elf_Addr) me->module_core_rw + me->arch.got_offset + rela->r_addend - loc; if (r_type == R_390_GOTPC) *(unsigned int *) loc = val; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/kernel/setup.c linux-2.6.32.59-pax/arch/s390/kernel/setup.c --- linux-2.6.32.59/arch/s390/kernel/setup.c 2012-03-18 17:44:12.472058990 +0100 +++ linux-2.6.32.59-pax/arch/s390/kernel/setup.c 2012-03-18 17:44:18.424057492 +0100 @@ -307,9 +307,6 @@ static int __init early_parse_mem(char * early_param("mem", early_parse_mem); #ifdef CONFIG_S390_SWITCH_AMODE -unsigned int switch_amode = 0; -EXPORT_SYMBOL_GPL(switch_amode); - static int set_amode_and_uaccess(unsigned long user_amode, unsigned long user32_amode) { @@ -335,17 +332,6 @@ static int set_amode_and_uaccess(unsigne return 0; } } - -/* - * Switch kernel/user addressing modes? - */ -static int __init early_parse_switch_amode(char *p) -{ - switch_amode = 1; - return 0; -} -early_param("switch_amode", early_parse_switch_amode); - #else /* CONFIG_S390_SWITCH_AMODE */ static inline int set_amode_and_uaccess(unsigned long user_amode, unsigned long user32_amode) @@ -354,24 +340,6 @@ static inline int set_amode_and_uaccess( } #endif /* CONFIG_S390_SWITCH_AMODE */ -#ifdef CONFIG_S390_EXEC_PROTECT -unsigned int s390_noexec = 0; -EXPORT_SYMBOL_GPL(s390_noexec); - -/* - * Enable execute protection? - */ -static int __init early_parse_noexec(char *p) -{ - if (!strncmp(p, "off", 3)) - return 0; - switch_amode = 1; - s390_noexec = 1; - return 0; -} -early_param("noexec", early_parse_noexec); -#endif /* CONFIG_S390_EXEC_PROTECT */ - static void setup_addressing_mode(void) { if (s390_noexec) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/s390/mm/mmap.c linux-2.6.32.59-pax/arch/s390/mm/mmap.c --- linux-2.6.32.59/arch/s390/mm/mmap.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/s390/mm/mmap.c 2012-03-13 13:15:34.372098031 +0100 @@ -78,10 +78,22 @@ void arch_pick_mmap_layout(struct mm_str */ if (mmap_is_legacy()) { mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { mm->mmap_base = mmap_base(); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } @@ -153,10 +165,22 @@ void arch_pick_mmap_layout(struct mm_str */ if (mmap_is_legacy()) { mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = s390_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { mm->mmap_base = mmap_base(); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = s390_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/score/include/asm/system.h linux-2.6.32.59-pax/arch/score/include/asm/system.h --- linux-2.6.32.59/arch/score/include/asm/system.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/score/include/asm/system.h 2012-03-13 13:15:34.372098031 +0100 @@ -17,7 +17,7 @@ do { \ #define finish_arch_switch(prev) do {} while (0) typedef void (*vi_handler_t)(void); -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) (x) #define mb() barrier() #define rmb() barrier() diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/score/kernel/process.c linux-2.6.32.59-pax/arch/score/kernel/process.c --- linux-2.6.32.59/arch/score/kernel/process.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/score/kernel/process.c 2012-03-13 13:15:34.372098031 +0100 @@ -161,8 +161,3 @@ unsigned long get_wchan(struct task_stru return task_pt_regs(task)->cp0_epc; } - -unsigned long arch_align_stack(unsigned long sp) -{ - return sp; -} diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sh/mm/mmap.c linux-2.6.32.59-pax/arch/sh/mm/mmap.c --- linux-2.6.32.59/arch/sh/mm/mmap.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sh/mm/mmap.c 2012-03-13 13:15:34.372098031 +0100 @@ -74,8 +74,7 @@ unsigned long arch_get_unmapped_area(str addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } @@ -106,7 +105,7 @@ full_search: } return -ENOMEM; } - if (likely(!vma || addr + len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* * Remember the place where we stopped the search: */ @@ -157,8 +156,7 @@ arch_get_unmapped_area_topdown(struct fi addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } @@ -179,7 +177,7 @@ arch_get_unmapped_area_topdown(struct fi /* make sure it can fit in the remaining address space */ if (likely(addr > len)) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr - len, len)) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr-len); } @@ -188,18 +186,18 @@ arch_get_unmapped_area_topdown(struct fi if (unlikely(mm->mmap_base < len)) goto bottomup; - addr = mm->mmap_base-len; - if (do_colour_align) - addr = COLOUR_ALIGN_DOWN(addr, pgoff); + addr = mm->mmap_base - len; do { + if (do_colour_align) + addr = COLOUR_ALIGN_DOWN(addr, pgoff); /* * Lookup failure means no vma is above this address, * else if new region fits below vma->vm_start, * return with success: */ vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr); } @@ -209,10 +207,8 @@ arch_get_unmapped_area_topdown(struct fi mm->cached_hole_size = vma->vm_start - addr; /* try just below the current vma->vm_start */ - addr = vma->vm_start-len; - if (do_colour_align) - addr = COLOUR_ALIGN_DOWN(addr, pgoff); - } while (likely(len < vma->vm_start)); + addr = skip_heap_stack_gap(vma, len); + } while (!IS_ERR_VALUE(addr)); bottomup: /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/atomic_32.h linux-2.6.32.59-pax/arch/sparc/include/asm/atomic_32.h --- linux-2.6.32.59/arch/sparc/include/asm/atomic_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/atomic_32.h 2012-03-13 13:15:34.372098031 +0100 @@ -13,6 +13,8 @@ #include +#include + #ifdef __KERNEL__ #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/atomic_64.h linux-2.6.32.59-pax/arch/sparc/include/asm/atomic_64.h --- linux-2.6.32.59/arch/sparc/include/asm/atomic_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/atomic_64.h 2012-03-13 13:15:34.376098030 +0100 @@ -14,18 +14,40 @@ #define ATOMIC64_INIT(i) { (i) } #define atomic_read(v) ((v)->counter) +static inline int atomic_read_unchecked(const atomic_unchecked_t *v) +{ + return v->counter; +} #define atomic64_read(v) ((v)->counter) +static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) +{ + return v->counter; +} #define atomic_set(v, i) (((v)->counter) = i) +static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) +{ + v->counter = i; +} #define atomic64_set(v, i) (((v)->counter) = i) +static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) +{ + v->counter = i; +} extern void atomic_add(int, atomic_t *); +extern void atomic_add_unchecked(int, atomic_unchecked_t *); extern void atomic64_add(long, atomic64_t *); +extern void atomic64_add_unchecked(long, atomic64_unchecked_t *); extern void atomic_sub(int, atomic_t *); +extern void atomic_sub_unchecked(int, atomic_unchecked_t *); extern void atomic64_sub(long, atomic64_t *); +extern void atomic64_sub_unchecked(long, atomic64_unchecked_t *); extern int atomic_add_ret(int, atomic_t *); +extern int atomic_add_ret_unchecked(int, atomic_unchecked_t *); extern long atomic64_add_ret(long, atomic64_t *); +extern long atomic64_add_ret_unchecked(long, atomic64_unchecked_t *); extern int atomic_sub_ret(int, atomic_t *); extern long atomic64_sub_ret(long, atomic64_t *); @@ -33,13 +55,29 @@ extern long atomic64_sub_ret(long, atomi #define atomic64_dec_return(v) atomic64_sub_ret(1, v) #define atomic_inc_return(v) atomic_add_ret(1, v) +static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) +{ + return atomic_add_ret_unchecked(1, v); +} #define atomic64_inc_return(v) atomic64_add_ret(1, v) +static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) +{ + return atomic64_add_ret_unchecked(1, v); +} #define atomic_sub_return(i, v) atomic_sub_ret(i, v) #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v) #define atomic_add_return(i, v) atomic_add_ret(i, v) +static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) +{ + return atomic_add_ret_unchecked(i, v); +} #define atomic64_add_return(i, v) atomic64_add_ret(i, v) +static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v) +{ + return atomic64_add_ret_unchecked(i, v); +} /* * atomic_inc_and_test - increment and test @@ -50,6 +88,10 @@ extern long atomic64_sub_ret(long, atomi * other cases. */ #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) +static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) +{ + return atomic_inc_return_unchecked(v) == 0; +} #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0) @@ -59,30 +101,65 @@ extern long atomic64_sub_ret(long, atomi #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0) #define atomic_inc(v) atomic_add(1, v) +static inline void atomic_inc_unchecked(atomic_unchecked_t *v) +{ + atomic_add_unchecked(1, v); +} #define atomic64_inc(v) atomic64_add(1, v) +static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) +{ + atomic64_add_unchecked(1, v); +} #define atomic_dec(v) atomic_sub(1, v) +static inline void atomic_dec_unchecked(atomic_unchecked_t *v) +{ + atomic_sub_unchecked(1, v); +} #define atomic64_dec(v) atomic64_sub(1, v) +static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) +{ + atomic64_sub_unchecked(1, v); +} #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n))) +static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) +{ + return cmpxchg(&v->counter, old, new); +} #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) +static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) +{ + return xchg(&v->counter, new); +} static inline int atomic_add_unless(atomic_t *v, int a, int u) { - int c, old; + int c, old, new; c = atomic_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic_cmpxchg((v), c, c + (a)); + + asm volatile("addcc %2, %0, %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "tvs %%icc, 6\n" +#endif + + : "=r" (new) + : "0" (c), "ir" (a) + : "cc"); + + old = atomic_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) @@ -90,20 +167,35 @@ static inline int atomic_add_unless(atom #define atomic64_cmpxchg(v, o, n) \ ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) #define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) +static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new) +{ + return xchg(&v->counter, new); +} static inline long atomic64_add_unless(atomic64_t *v, long a, long u) { - long c, old; + long c, old, new; c = atomic64_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic64_cmpxchg((v), c, c + (a)); + + asm volatile("addcc %2, %0, %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "tvs %%xcc, 6\n" +#endif + + : "=r" (new) + : "0" (c), "ir" (a) + : "cc"); + + old = atomic64_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/cache.h linux-2.6.32.59-pax/arch/sparc/include/asm/cache.h --- linux-2.6.32.59/arch/sparc/include/asm/cache.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/cache.h 2012-03-13 13:15:34.376098030 +0100 @@ -8,7 +8,7 @@ #define _SPARC_CACHE_H #define L1_CACHE_SHIFT 5 -#define L1_CACHE_BYTES 32 +#define L1_CACHE_BYTES 32UL #define L1_CACHE_ALIGN(x) ((((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))) #ifdef CONFIG_SPARC32 diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/elf_32.h linux-2.6.32.59-pax/arch/sparc/include/asm/elf_32.h --- linux-2.6.32.59/arch/sparc/include/asm/elf_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/elf_32.h 2012-03-13 13:15:34.376098030 +0100 @@ -116,6 +116,13 @@ typedef struct { #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE) +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE 0x10000UL + +#define PAX_DELTA_MMAP_LEN 16 +#define PAX_DELTA_STACK_LEN 16 +#endif + /* This yields a mask that user programs can use to figure out what instruction set this cpu supports. This can NOT be done in userspace on Sparc. */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/elf_64.h linux-2.6.32.59-pax/arch/sparc/include/asm/elf_64.h --- linux-2.6.32.59/arch/sparc/include/asm/elf_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/elf_64.h 2012-03-13 13:15:34.376098030 +0100 @@ -163,6 +163,12 @@ typedef struct { #define ELF_ET_DYN_BASE 0x0000010000000000UL #define COMPAT_ELF_ET_DYN_BASE 0x0000000070000000UL +#ifdef CONFIG_PAX_ASLR +#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT) ? 0x10000UL : 0x100000UL) + +#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT) ? 14 : 28) +#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT) ? 15 : 29) +#endif /* This yields a mask that user programs can use to figure out what instruction set this cpu supports. */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/page_32.h linux-2.6.32.59-pax/arch/sparc/include/asm/page_32.h --- linux-2.6.32.59/arch/sparc/include/asm/page_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/page_32.h 2012-03-13 13:15:34.380098030 +0100 @@ -8,6 +8,8 @@ #ifndef _SPARC_PAGE_H #define _SPARC_PAGE_H +#include + #define PAGE_SHIFT 12 #ifndef __ASSEMBLY__ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/pgalloc_32.h linux-2.6.32.59-pax/arch/sparc/include/asm/pgalloc_32.h --- linux-2.6.32.59/arch/sparc/include/asm/pgalloc_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/pgalloc_32.h 2012-05-07 17:49:12.028114621 +0200 @@ -37,6 +37,7 @@ BTFIXUPDEF_CALL(void, free_pgd_fast, pgd BTFIXUPDEF_CALL(void, pgd_set, pgd_t *, pmd_t *) #define pgd_set(pgdp,pmdp) BTFIXUP_CALL(pgd_set)(pgdp,pmdp) #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) +#define pgd_populate_kernel(MM, PGD, PMD) pgd_populate((MM), (PGD), (PMD)) BTFIXUPDEF_CALL(pmd_t *, pmd_alloc_one, struct mm_struct *, unsigned long) #define pmd_alloc_one(mm, address) BTFIXUP_CALL(pmd_alloc_one)(mm, address) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/pgalloc_64.h linux-2.6.32.59-pax/arch/sparc/include/asm/pgalloc_64.h --- linux-2.6.32.59/arch/sparc/include/asm/pgalloc_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/pgalloc_64.h 2012-05-07 17:49:12.028114621 +0200 @@ -25,6 +25,7 @@ static inline void pgd_free(struct mm_st } #define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD) +#define pud_populate_kernel(MM, PUD, PMD) pud_populate((MM), (PUD), (PMD)) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/pgtable_32.h linux-2.6.32.59-pax/arch/sparc/include/asm/pgtable_32.h --- linux-2.6.32.59/arch/sparc/include/asm/pgtable_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/pgtable_32.h 2012-03-13 13:15:34.380098030 +0100 @@ -43,6 +43,13 @@ BTFIXUPDEF_SIMM13(user_ptrs_per_pgd) BTFIXUPDEF_INT(page_none) BTFIXUPDEF_INT(page_copy) BTFIXUPDEF_INT(page_readonly) + +#ifdef CONFIG_PAX_PAGEEXEC +BTFIXUPDEF_INT(page_shared_noexec) +BTFIXUPDEF_INT(page_copy_noexec) +BTFIXUPDEF_INT(page_readonly_noexec) +#endif + BTFIXUPDEF_INT(page_kernel) #define PMD_SHIFT SUN4C_PMD_SHIFT @@ -64,6 +71,16 @@ extern pgprot_t PAGE_SHARED; #define PAGE_COPY __pgprot(BTFIXUP_INT(page_copy)) #define PAGE_READONLY __pgprot(BTFIXUP_INT(page_readonly)) +#ifdef CONFIG_PAX_PAGEEXEC +extern pgprot_t PAGE_SHARED_NOEXEC; +# define PAGE_COPY_NOEXEC __pgprot(BTFIXUP_INT(page_copy_noexec)) +# define PAGE_READONLY_NOEXEC __pgprot(BTFIXUP_INT(page_readonly_noexec)) +#else +# define PAGE_SHARED_NOEXEC PAGE_SHARED +# define PAGE_COPY_NOEXEC PAGE_COPY +# define PAGE_READONLY_NOEXEC PAGE_READONLY +#endif + extern unsigned long page_kernel; #ifdef MODULE diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/pgtsrmmu.h linux-2.6.32.59-pax/arch/sparc/include/asm/pgtsrmmu.h --- linux-2.6.32.59/arch/sparc/include/asm/pgtsrmmu.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/pgtsrmmu.h 2012-03-13 13:15:34.380098030 +0100 @@ -115,6 +115,13 @@ SRMMU_EXEC | SRMMU_REF) #define SRMMU_PAGE_RDONLY __pgprot(SRMMU_VALID | SRMMU_CACHE | \ SRMMU_EXEC | SRMMU_REF) + +#ifdef CONFIG_PAX_PAGEEXEC +#define SRMMU_PAGE_SHARED_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_WRITE | SRMMU_REF) +#define SRMMU_PAGE_COPY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) +#define SRMMU_PAGE_RDONLY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF) +#endif + #define SRMMU_PAGE_KERNEL __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \ SRMMU_DIRTY | SRMMU_REF) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/spinlock_64.h linux-2.6.32.59-pax/arch/sparc/include/asm/spinlock_64.h --- linux-2.6.32.59/arch/sparc/include/asm/spinlock_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/spinlock_64.h 2012-03-13 13:15:34.380098030 +0100 @@ -92,14 +92,19 @@ static inline void __raw_spin_lock_flags /* Multi-reader locks, these are much saner than the 32-bit Sparc ones... */ -static void inline arch_read_lock(raw_rwlock_t *lock) +static inline void arch_read_lock(raw_rwlock_t *lock) { unsigned long tmp1, tmp2; __asm__ __volatile__ ( "1: ldsw [%2], %0\n" " brlz,pn %0, 2f\n" -"4: add %0, 1, %1\n" +"4: addcc %0, 1, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT +" tvs %%icc, 6\n" +#endif + " cas [%2], %0, %1\n" " cmp %0, %1\n" " bne,pn %%icc, 1b\n" @@ -112,7 +117,7 @@ static void inline arch_read_lock(raw_rw " .previous" : "=&r" (tmp1), "=&r" (tmp2) : "r" (lock) - : "memory"); + : "memory", "cc"); } static int inline arch_read_trylock(raw_rwlock_t *lock) @@ -123,7 +128,12 @@ static int inline arch_read_trylock(raw_ "1: ldsw [%2], %0\n" " brlz,a,pn %0, 2f\n" " mov 0, %0\n" -" add %0, 1, %1\n" +" addcc %0, 1, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT +" tvs %%icc, 6\n" +#endif + " cas [%2], %0, %1\n" " cmp %0, %1\n" " bne,pn %%icc, 1b\n" @@ -136,13 +146,18 @@ static int inline arch_read_trylock(raw_ return tmp1; } -static void inline arch_read_unlock(raw_rwlock_t *lock) +static inline void arch_read_unlock(raw_rwlock_t *lock) { unsigned long tmp1, tmp2; __asm__ __volatile__( "1: lduw [%2], %0\n" -" sub %0, 1, %1\n" +" subcc %0, 1, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT +" tvs %%icc, 6\n" +#endif + " cas [%2], %0, %1\n" " cmp %0, %1\n" " bne,pn %%xcc, 1b\n" @@ -152,7 +167,7 @@ static void inline arch_read_unlock(raw_ : "memory"); } -static void inline arch_write_lock(raw_rwlock_t *lock) +static inline void arch_write_lock(raw_rwlock_t *lock) { unsigned long mask, tmp1, tmp2; @@ -177,7 +192,7 @@ static void inline arch_write_lock(raw_r : "memory"); } -static void inline arch_write_unlock(raw_rwlock_t *lock) +static inline void arch_write_unlock(raw_rwlock_t *lock) { __asm__ __volatile__( " stw %%g0, [%0]" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/thread_info_32.h linux-2.6.32.59-pax/arch/sparc/include/asm/thread_info_32.h --- linux-2.6.32.59/arch/sparc/include/asm/thread_info_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/thread_info_32.h 2012-03-13 13:15:34.384098030 +0100 @@ -50,6 +50,8 @@ struct thread_info { unsigned long w_saved; struct restart_block restart_block; + + unsigned long lowest_stack; }; /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/thread_info_64.h linux-2.6.32.59-pax/arch/sparc/include/asm/thread_info_64.h --- linux-2.6.32.59/arch/sparc/include/asm/thread_info_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/thread_info_64.h 2012-03-13 13:15:34.384098030 +0100 @@ -68,6 +68,8 @@ struct thread_info { struct pt_regs *kern_una_regs; unsigned int kern_una_insn; + unsigned long lowest_stack; + unsigned long fpregs[0] __attribute__ ((aligned(64))); }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/uaccess_32.h linux-2.6.32.59-pax/arch/sparc/include/asm/uaccess_32.h --- linux-2.6.32.59/arch/sparc/include/asm/uaccess_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/uaccess_32.h 2012-03-13 13:15:34.384098030 +0100 @@ -249,27 +249,46 @@ extern unsigned long __copy_user(void __ static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) { - if (n && __access_ok((unsigned long) to, n)) + if ((long)n < 0) + return n; + + if (n && __access_ok((unsigned long) to, n)) { + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); return __copy_user(to, (__force void __user *) from, n); - else + } else return n; } static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); + return __copy_user(to, (__force void __user *) from, n); } static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) { - if (n && __access_ok((unsigned long) from, n)) + if ((long)n < 0) + return n; + + if (n && __access_ok((unsigned long) from, n)) { + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); return __copy_user((__force void __user *) to, from, n); - else + } else return n; } static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + return __copy_user((__force void __user *) to, from, n); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/uaccess_64.h linux-2.6.32.59-pax/arch/sparc/include/asm/uaccess_64.h --- linux-2.6.32.59/arch/sparc/include/asm/uaccess_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/uaccess_64.h 2012-03-13 13:15:34.384098030 +0100 @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -212,8 +213,15 @@ extern unsigned long copy_from_user_fixu static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long size) { - unsigned long ret = ___copy_from_user(to, from, size); + unsigned long ret; + if ((long)size < 0 || size > INT_MAX) + return size; + + if (!__builtin_constant_p(size)) + check_object_size(to, size, false); + + ret = ___copy_from_user(to, from, size); if (unlikely(ret)) ret = copy_from_user_fixup(to, from, size); return ret; @@ -228,8 +236,15 @@ extern unsigned long copy_to_user_fixup( static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long size) { - unsigned long ret = ___copy_to_user(to, from, size); + unsigned long ret; + + if ((long)size < 0 || size > INT_MAX) + return size; + + if (!__builtin_constant_p(size)) + check_object_size(from, size, true); + ret = ___copy_to_user(to, from, size); if (unlikely(ret)) ret = copy_to_user_fixup(to, from, size); return ret; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/include/asm/uaccess.h linux-2.6.32.59-pax/arch/sparc/include/asm/uaccess.h --- linux-2.6.32.59/arch/sparc/include/asm/uaccess.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/include/asm/uaccess.h 2012-03-13 13:15:34.388098030 +0100 @@ -1,5 +1,13 @@ #ifndef ___ASM_SPARC_UACCESS_H #define ___ASM_SPARC_UACCESS_H + +#ifdef __KERNEL__ +#ifndef __ASSEMBLY__ +#include +extern void check_object_size(const void *ptr, unsigned long n, bool to); +#endif +#endif + #if defined(__sparc__) && defined(__arch64__) #include #else diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/Kconfig linux-2.6.32.59-pax/arch/sparc/Kconfig --- linux-2.6.32.59/arch/sparc/Kconfig 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/Kconfig 2012-03-13 13:15:34.388098030 +0100 @@ -32,6 +32,7 @@ config SPARC config SPARC32 def_bool !64BIT + select GENERIC_ATOMIC64 config SPARC64 def_bool 64BIT diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/kernel/Makefile linux-2.6.32.59-pax/arch/sparc/kernel/Makefile --- linux-2.6.32.59/arch/sparc/kernel/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/kernel/Makefile 2012-03-13 13:15:34.388098030 +0100 @@ -3,7 +3,7 @@ # asflags-y := -ansi -ccflags-y := -Werror +#ccflags-y := -Werror extra-y := head_$(BITS).o extra-y += init_task.o diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/kernel/sys_sparc_32.c linux-2.6.32.59-pax/arch/sparc/kernel/sys_sparc_32.c --- linux-2.6.32.59/arch/sparc/kernel/sys_sparc_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/kernel/sys_sparc_32.c 2012-03-13 13:15:34.388098030 +0100 @@ -57,7 +57,7 @@ unsigned long arch_get_unmapped_area(str if (ARCH_SUN4C && len > 0x20000000) return -ENOMEM; if (!addr) - addr = TASK_UNMAPPED_BASE; + addr = current->mm->mmap_base; if (flags & MAP_SHARED) addr = COLOUR_ALIGN(addr); @@ -72,7 +72,7 @@ unsigned long arch_get_unmapped_area(str } if (TASK_SIZE - PAGE_SIZE - len < addr) return -ENOMEM; - if (!vmm || addr + len <= vmm->vm_start) + if (check_heap_stack_gap(vmm, addr, len)) return addr; addr = vmm->vm_end; if (flags & MAP_SHARED) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/kernel/sys_sparc_64.c linux-2.6.32.59-pax/arch/sparc/kernel/sys_sparc_64.c --- linux-2.6.32.59/arch/sparc/kernel/sys_sparc_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/kernel/sys_sparc_64.c 2012-03-13 13:15:34.392098030 +0100 @@ -125,7 +125,7 @@ unsigned long arch_get_unmapped_area(str /* We do not accept a shared mapping if it would violate * cache aliasing constraints. */ - if ((flags & MAP_SHARED) && + if ((filp || (flags & MAP_SHARED)) && ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) return -EINVAL; return addr; @@ -140,6 +140,10 @@ unsigned long arch_get_unmapped_area(str if (filp || (flags & MAP_SHARED)) do_color_align = 1; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { if (do_color_align) addr = COLOUR_ALIGN(addr, pgoff); @@ -147,15 +151,14 @@ unsigned long arch_get_unmapped_area(str addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (task_size - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (len > mm->cached_hole_size) { - start_addr = addr = mm->free_area_cache; + start_addr = addr = mm->free_area_cache; } else { - start_addr = addr = TASK_UNMAPPED_BASE; + start_addr = addr = mm->mmap_base; mm->cached_hole_size = 0; } @@ -175,14 +178,14 @@ full_search: vma = find_vma(mm, VA_EXCLUDE_END); } if (unlikely(task_size < addr)) { - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; + if (start_addr != mm->mmap_base) { + start_addr = addr = mm->mmap_base; mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; } - if (likely(!vma || addr + len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* * Remember the place where we stopped the search: */ @@ -216,7 +219,7 @@ arch_get_unmapped_area_topdown(struct fi /* We do not accept a shared mapping if it would violate * cache aliasing constraints. */ - if ((flags & MAP_SHARED) && + if ((filp || (flags & MAP_SHARED)) && ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) return -EINVAL; return addr; @@ -237,8 +240,7 @@ arch_get_unmapped_area_topdown(struct fi addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (task_size - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } @@ -259,7 +261,7 @@ arch_get_unmapped_area_topdown(struct fi /* make sure it can fit in the remaining address space */ if (likely(addr > len)) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr - len, len)) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr-len); } @@ -268,18 +270,18 @@ arch_get_unmapped_area_topdown(struct fi if (unlikely(mm->mmap_base < len)) goto bottomup; - addr = mm->mmap_base-len; - if (do_color_align) - addr = COLOUR_ALIGN_DOWN(addr, pgoff); + addr = mm->mmap_base - len; do { + if (do_color_align) + addr = COLOUR_ALIGN_DOWN(addr, pgoff); /* * Lookup failure means no vma is above this address, * else if new region fits below vma->vm_start, * return with success: */ vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr); } @@ -289,10 +291,8 @@ arch_get_unmapped_area_topdown(struct fi mm->cached_hole_size = vma->vm_start - addr; /* try just below the current vma->vm_start */ - addr = vma->vm_start-len; - if (do_color_align) - addr = COLOUR_ALIGN_DOWN(addr, pgoff); - } while (likely(len < vma->vm_start)); + addr = skip_heap_stack_gap(vma, len); + } while (!IS_ERR_VALUE(addr)); bottomup: /* @@ -384,6 +384,12 @@ void arch_pick_mmap_layout(struct mm_str current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY || sysctl_legacy_va_layout) { mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { @@ -398,6 +404,12 @@ void arch_pick_mmap_layout(struct mm_str gap = (task_size / 6 * 5); mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/kernel/traps_64.c linux-2.6.32.59-pax/arch/sparc/kernel/traps_64.c --- linux-2.6.32.59/arch/sparc/kernel/traps_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/kernel/traps_64.c 2012-03-13 13:15:34.392098030 +0100 @@ -93,6 +93,12 @@ void bad_trap(struct pt_regs *regs, long lvl -= 0x100; if (regs->tstate & TSTATE_PRIV) { + +#ifdef CONFIG_PAX_REFCOUNT + if (lvl == 6) + pax_report_refcount_overflow(regs); +#endif + sprintf(buffer, "Kernel bad sw trap %lx", lvl); die_if_kernel(buffer, regs); } @@ -111,11 +117,16 @@ void bad_trap(struct pt_regs *regs, long void bad_trap_tl1(struct pt_regs *regs, long lvl) { char buffer[32]; - + if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs, 0, lvl, SIGTRAP) == NOTIFY_STOP) return; +#ifdef CONFIG_PAX_REFCOUNT + if (lvl == 6) + pax_report_refcount_overflow(regs); +#endif + dump_tl1_traplog((struct tl1_traplog *)(regs + 1)); sprintf (buffer, "Bad trap %lx at tl>0", lvl); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/kernel/una_asm_64.S linux-2.6.32.59-pax/arch/sparc/kernel/una_asm_64.S --- linux-2.6.32.59/arch/sparc/kernel/una_asm_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/kernel/una_asm_64.S 2012-03-13 13:15:34.392098030 +0100 @@ -127,7 +127,7 @@ do_int_load: wr %o5, 0x0, %asi retl mov 0, %o0 - .size __do_int_load, .-__do_int_load + .size do_int_load, .-do_int_load .section __ex_table,"a" .word 4b, __retl_efault diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/lib/atomic_64.S linux-2.6.32.59-pax/arch/sparc/lib/atomic_64.S --- linux-2.6.32.59/arch/sparc/lib/atomic_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/lib/atomic_64.S 2012-03-13 13:15:34.396098029 +0100 @@ -18,7 +18,12 @@ atomic_add: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, 2f @@ -28,12 +33,32 @@ atomic_add: /* %o0 = increment, %o1 = at 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic_add, .-atomic_add + .globl atomic_add_unchecked + .type atomic_add_unchecked,#function +atomic_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: lduw [%o1], %g1 + add %g1, %o0, %g7 + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_add_unchecked, .-atomic_add_unchecked + .globl atomic_sub .type atomic_sub,#function atomic_sub: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, 2f @@ -43,12 +68,32 @@ atomic_sub: /* %o0 = decrement, %o1 = at 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic_sub, .-atomic_sub + .globl atomic_sub_unchecked + .type atomic_sub_unchecked,#function +atomic_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: lduw [%o1], %g1 + sub %g1, %o0, %g7 + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_sub_unchecked, .-atomic_sub_unchecked + .globl atomic_add_ret .type atomic_add_ret,#function atomic_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, 2f @@ -59,12 +104,33 @@ atomic_add_ret: /* %o0 = increment, %o1 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic_add_ret, .-atomic_add_ret + .globl atomic_add_ret_unchecked + .type atomic_add_ret_unchecked,#function +atomic_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: lduw [%o1], %g1 + addcc %g1, %o0, %g7 + cas [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %icc, 2f + add %g7, %o0, %g7 + sra %g7, 0, %o0 + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic_add_ret_unchecked, .-atomic_add_ret_unchecked + .globl atomic_sub_ret .type atomic_sub_ret,#function atomic_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: lduw [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %icc, 2f @@ -80,7 +146,12 @@ atomic_sub_ret: /* %o0 = decrement, %o1 atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, 2f @@ -90,12 +161,32 @@ atomic64_add: /* %o0 = increment, %o1 = 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic64_add, .-atomic64_add + .globl atomic64_add_unchecked + .type atomic64_add_unchecked,#function +atomic64_add_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: ldx [%o1], %g1 + addcc %g1, %o0, %g7 + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_add_unchecked, .-atomic64_add_unchecked + .globl atomic64_sub .type atomic64_sub,#function atomic64_sub: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, 2f @@ -105,12 +196,32 @@ atomic64_sub: /* %o0 = decrement, %o1 = 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic64_sub, .-atomic64_sub + .globl atomic64_sub_unchecked + .type atomic64_sub_unchecked,#function +atomic64_sub_unchecked: /* %o0 = decrement, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: ldx [%o1], %g1 + subcc %g1, %o0, %g7 + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, 2f + nop + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_sub_unchecked, .-atomic64_sub_unchecked + .globl atomic64_add_ret .type atomic64_add_ret,#function atomic64_add_ret: /* %o0 = increment, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - add %g1, %o0, %g7 + addcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, 2f @@ -121,12 +232,33 @@ atomic64_add_ret: /* %o0 = increment, %o 2: BACKOFF_SPIN(%o2, %o3, 1b) .size atomic64_add_ret, .-atomic64_add_ret + .globl atomic64_add_ret_unchecked + .type atomic64_add_ret_unchecked,#function +atomic64_add_ret_unchecked: /* %o0 = increment, %o1 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: ldx [%o1], %g1 + addcc %g1, %o0, %g7 + casx [%o1], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, 2f + add %g7, %o0, %g7 + mov %g7, %o0 + retl + nop +2: BACKOFF_SPIN(%o2, %o3, 1b) + .size atomic64_add_ret_unchecked, .-atomic64_add_ret_unchecked + .globl atomic64_sub_ret .type atomic64_sub_ret,#function atomic64_sub_ret: /* %o0 = decrement, %o1 = atomic_ptr */ BACKOFF_SETUP(%o2) 1: ldx [%o1], %g1 - sub %g1, %o0, %g7 + subcc %g1, %o0, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %xcc, 6 +#endif + casx [%o1], %g1, %g7 cmp %g1, %g7 bne,pn %xcc, 2f diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/lib/ksyms.c linux-2.6.32.59-pax/arch/sparc/lib/ksyms.c --- linux-2.6.32.59/arch/sparc/lib/ksyms.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/lib/ksyms.c 2012-03-13 13:15:34.396098029 +0100 @@ -144,12 +144,18 @@ EXPORT_SYMBOL(__downgrade_write); /* Atomic counter implementation. */ EXPORT_SYMBOL(atomic_add); +EXPORT_SYMBOL(atomic_add_unchecked); EXPORT_SYMBOL(atomic_add_ret); +EXPORT_SYMBOL(atomic_add_ret_unchecked); EXPORT_SYMBOL(atomic_sub); +EXPORT_SYMBOL(atomic_sub_unchecked); EXPORT_SYMBOL(atomic_sub_ret); EXPORT_SYMBOL(atomic64_add); +EXPORT_SYMBOL(atomic64_add_unchecked); EXPORT_SYMBOL(atomic64_add_ret); +EXPORT_SYMBOL(atomic64_add_ret_unchecked); EXPORT_SYMBOL(atomic64_sub); +EXPORT_SYMBOL(atomic64_sub_unchecked); EXPORT_SYMBOL(atomic64_sub_ret); /* Atomic bit operations. */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/lib/Makefile linux-2.6.32.59-pax/arch/sparc/lib/Makefile --- linux-2.6.32.59/arch/sparc/lib/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/lib/Makefile 2012-03-13 13:15:34.396098029 +0100 @@ -2,7 +2,7 @@ # asflags-y := -ansi -DST_DIV0=0x02 -ccflags-y := -Werror +#ccflags-y := -Werror lib-$(CONFIG_SPARC32) += mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o lib-$(CONFIG_SPARC32) += memcpy.o memset.o diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/lib/rwsem_64.S linux-2.6.32.59-pax/arch/sparc/lib/rwsem_64.S --- linux-2.6.32.59/arch/sparc/lib/rwsem_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/lib/rwsem_64.S 2012-03-13 13:15:34.396098029 +0100 @@ -11,7 +11,12 @@ .globl __down_read __down_read: 1: lduw [%o0], %g1 - add %g1, 1, %g7 + addcc %g1, 1, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o0], %g1, %g7 cmp %g1, %g7 bne,pn %icc, 1b @@ -33,7 +38,12 @@ __down_read: .globl __down_read_trylock __down_read_trylock: 1: lduw [%o0], %g1 - add %g1, 1, %g7 + addcc %g1, 1, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cmp %g7, 0 bl,pn %icc, 2f mov 0, %o1 @@ -51,7 +61,12 @@ __down_write: or %g1, %lo(RWSEM_ACTIVE_WRITE_BIAS), %g1 1: lduw [%o0], %g3 - add %g3, %g1, %g7 + addcc %g3, %g1, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o0], %g3, %g7 cmp %g3, %g7 bne,pn %icc, 1b @@ -77,7 +92,12 @@ __down_write_trylock: cmp %g3, 0 bne,pn %icc, 2f mov 0, %o1 - add %g3, %g1, %g7 + addcc %g3, %g1, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o0], %g3, %g7 cmp %g3, %g7 bne,pn %icc, 1b @@ -90,7 +110,12 @@ __down_write_trylock: __up_read: 1: lduw [%o0], %g1 - sub %g1, 1, %g7 + subcc %g1, 1, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o0], %g1, %g7 cmp %g1, %g7 bne,pn %icc, 1b @@ -118,7 +143,12 @@ __up_write: or %g1, %lo(RWSEM_ACTIVE_WRITE_BIAS), %g1 1: lduw [%o0], %g3 - sub %g3, %g1, %g7 + subcc %g3, %g1, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o0], %g3, %g7 cmp %g3, %g7 bne,pn %icc, 1b @@ -143,7 +173,12 @@ __downgrade_write: or %g1, %lo(RWSEM_WAITING_BIAS), %g1 1: lduw [%o0], %g3 - sub %g3, %g1, %g7 + subcc %g3, %g1, %g7 + +#ifdef CONFIG_PAX_REFCOUNT + tvs %icc, 6 +#endif + cas [%o0], %g3, %g7 cmp %g3, %g7 bne,pn %icc, 1b diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/mm/fault_32.c linux-2.6.32.59-pax/arch/sparc/mm/fault_32.c --- linux-2.6.32.59/arch/sparc/mm/fault_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/mm/fault_32.c 2012-09-11 20:59:31.380023475 +0200 @@ -21,6 +21,9 @@ #include #include #include +#include +#include +#include #include #include @@ -167,6 +170,276 @@ static unsigned long compute_si_addr(str return safe_compute_effective_address(regs, insn); } +#ifdef CONFIG_PAX_PAGEEXEC +#ifdef CONFIG_PAX_DLRESOLVE +static void pax_emuplt_close(struct vm_area_struct *vma) +{ + vma->vm_mm->call_dl_resolve = 0UL; +} + +static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + unsigned int *kaddr; + + vmf->page = alloc_page(GFP_HIGHUSER); + if (!vmf->page) + return VM_FAULT_OOM; + + kaddr = kmap(vmf->page); + memset(kaddr, 0, PAGE_SIZE); + kaddr[0] = 0x9DE3BFA8U; /* save */ + flush_dcache_page(vmf->page); + kunmap(vmf->page); + return VM_FAULT_MAJOR; +} + +static const struct vm_operations_struct pax_vm_ops = { + .close = pax_emuplt_close, + .fault = pax_emuplt_fault +}; + +static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) +{ + int ret; + + vma->vm_mm = current->mm; + vma->vm_start = addr; + vma->vm_end = addr + PAGE_SIZE; + vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + vma->vm_ops = &pax_vm_ops; + + ret = insert_vm_struct(current->mm, vma); + if (ret) + return ret; + + ++current->mm->total_vm; + return 0; +} +#endif + +/* + * PaX: decide what to do with offenders (regs->pc = fault address) + * + * returns 1 when task should be killed + * 2 when patched PLT trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: patched PLT emulation #1 */ + unsigned int sethi1, sethi2, jmpl; + + err = get_user(sethi1, (unsigned int *)regs->pc); + err |= get_user(sethi2, (unsigned int *)(regs->pc+4)); + err |= get_user(jmpl, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x03000000U && + (jmpl & 0xFFFFE000U) == 0x81C06000U) + { + unsigned int addr; + + regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; + addr = regs->u_regs[UREG_G1]; + addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); + regs->pc = addr; + regs->npc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #2 */ + unsigned int ba; + + err = get_user(ba, (unsigned int *)regs->pc); + + if (err) + break; + + if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) { + unsigned int addr; + + if ((ba & 0xFFC00000U) == 0x30800000U) + addr = regs->pc + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); + else + addr = regs->pc + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); + regs->pc = addr; + regs->npc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #3 */ + unsigned int sethi, bajmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->pc); + err |= get_user(bajmpl, (unsigned int *)(regs->pc+4)); + err |= get_user(nop, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) && + nop == 0x01000000U) + { + unsigned int addr; + + addr = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] = addr; + if ((bajmpl & 0xFFFFE000U) == 0x81C06000U) + addr += (((bajmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); + else + addr = regs->pc + ((((bajmpl | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); + regs->pc = addr; + regs->npc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: unpatched PLT emulation step 1 */ + unsigned int sethi, ba, nop; + + err = get_user(sethi, (unsigned int *)regs->pc); + err |= get_user(ba, (unsigned int *)(regs->pc+4)); + err |= get_user(nop, (unsigned int *)(regs->pc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && + nop == 0x01000000U) + { + unsigned int addr, save, call; + + if ((ba & 0xFFC00000U) == 0x30800000U) + addr = regs->pc + 4 + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2); + else + addr = regs->pc + 4 + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2); + + err = get_user(save, (unsigned int *)addr); + err |= get_user(call, (unsigned int *)(addr+4)); + err |= get_user(nop, (unsigned int *)(addr+8)); + if (err) + break; + +#ifdef CONFIG_PAX_DLRESOLVE + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + struct vm_area_struct *vma; + unsigned long call_dl_resolve; + + down_read(¤t->mm->mmap_sem); + call_dl_resolve = current->mm->call_dl_resolve; + up_read(¤t->mm->mmap_sem); + if (likely(call_dl_resolve)) + goto emulate; + + vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); + + down_write(¤t->mm->mmap_sem); + if (current->mm->call_dl_resolve) { + call_dl_resolve = current->mm->call_dl_resolve; + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + goto emulate; + } + + call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); + if (!vma || (call_dl_resolve & ~PAGE_MASK)) { + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + if (pax_insert_vma(vma, call_dl_resolve)) { + up_write(¤t->mm->mmap_sem); + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + current->mm->call_dl_resolve = call_dl_resolve; + up_write(¤t->mm->mmap_sem); + +emulate: + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->pc = call_dl_resolve; + regs->npc = addr+4; + return 3; + } +#endif + + /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ + if ((save & 0xFFC00000U) == 0x05000000U && + (call & 0xFFFFE000U) == 0x85C0A000U && + nop == 0x01000000U) + { + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G2] = addr + 4; + addr = (save & 0x003FFFFFU) << 10; + addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U); + regs->pc = addr; + regs->npc = addr+4; + return 3; + } + } + } while (0); + + do { /* PaX: unpatched PLT emulation step 2 */ + unsigned int save, call, nop; + + err = get_user(save, (unsigned int *)(regs->pc-4)); + err |= get_user(call, (unsigned int *)regs->pc); + err |= get_user(nop, (unsigned int *)(regs->pc+4)); + if (err) + break; + + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + unsigned int dl_resolve = regs->pc + ((((call | 0xC0000000U) ^ 0x20000000U) + 0x20000000U) << 2); + + regs->u_regs[UREG_RETPC] = regs->pc; + regs->pc = dl_resolve; + regs->npc = dl_resolve+4; + return 3; + } + } while (0); +#endif + + return 1; +} + +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 8; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write, unsigned long address) { @@ -231,6 +504,24 @@ good_area: if(!(vma->vm_flags & VM_WRITE)) goto bad_area; } else { + +#ifdef CONFIG_PAX_PAGEEXEC + if ((mm->pax_flags & MF_PAX_PAGEEXEC) && text_fault && !(vma->vm_flags & VM_EXEC)) { + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 2: + case 3: + return; +#endif + + } + pax_report_fault(regs, (void *)regs->pc, (void *)regs->u_regs[UREG_FP]); + do_group_exit(SIGKILL); + } +#endif + /* Allow reads even for write-only mappings */ if(!(vma->vm_flags & (VM_READ | VM_EXEC))) goto bad_area; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/mm/fault_64.c linux-2.6.32.59-pax/arch/sparc/mm/fault_64.c --- linux-2.6.32.59/arch/sparc/mm/fault_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/mm/fault_64.c 2012-07-29 01:36:59.470598069 +0200 @@ -20,6 +20,9 @@ #include #include #include +#include +#include +#include #include #include @@ -249,6 +252,465 @@ static void noinline bogus_32bit_fault_a show_regs(regs); } +#ifdef CONFIG_PAX_PAGEEXEC +#ifdef CONFIG_PAX_DLRESOLVE +static void pax_emuplt_close(struct vm_area_struct *vma) +{ + vma->vm_mm->call_dl_resolve = 0UL; +} + +static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + unsigned int *kaddr; + + vmf->page = alloc_page(GFP_HIGHUSER); + if (!vmf->page) + return VM_FAULT_OOM; + + kaddr = kmap(vmf->page); + memset(kaddr, 0, PAGE_SIZE); + kaddr[0] = 0x9DE3BFA8U; /* save */ + flush_dcache_page(vmf->page); + kunmap(vmf->page); + return VM_FAULT_MAJOR; +} + +static const struct vm_operations_struct pax_vm_ops = { + .close = pax_emuplt_close, + .fault = pax_emuplt_fault +}; + +static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr) +{ + int ret; + + vma->vm_mm = current->mm; + vma->vm_start = addr; + vma->vm_end = addr + PAGE_SIZE; + vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC; + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + vma->vm_ops = &pax_vm_ops; + + ret = insert_vm_struct(current->mm, vma); + if (ret) + return ret; + + ++current->mm->total_vm; + return 0; +} +#endif + +/* + * PaX: decide what to do with offenders (regs->tpc = fault address) + * + * returns 1 when task should be killed + * 2 when patched PLT trampoline was detected + * 3 when unpatched PLT trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + +#ifdef CONFIG_PAX_EMUPLT + int err; + + do { /* PaX: patched PLT emulation #1 */ + unsigned int sethi1, sethi2, jmpl; + + err = get_user(sethi1, (unsigned int *)regs->tpc); + err |= get_user(sethi2, (unsigned int *)(regs->tpc+4)); + err |= get_user(jmpl, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x03000000U && + (jmpl & 0xFFFFE000U) == 0x81C06000U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10; + addr = regs->u_regs[UREG_G1]; + addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #2 */ + unsigned int ba; + + err = get_user(ba, (unsigned int *)regs->tpc); + + if (err) + break; + + if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) { + unsigned long addr; + + if ((ba & 0xFFC00000U) == 0x30800000U) + addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); + else + addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #3 */ + unsigned int sethi, bajmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(bajmpl, (unsigned int *)(regs->tpc+4)); + err |= get_user(nop, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) && + nop == 0x01000000U) + { + unsigned long addr; + + addr = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] = addr; + if ((bajmpl & 0xFFFFE000U) == 0x81C06000U) + addr += (((bajmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); + else + addr = regs->tpc + ((((bajmpl | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #4 */ + unsigned int sethi, mov1, call, mov2; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(mov1, (unsigned int *)(regs->tpc+4)); + err |= get_user(call, (unsigned int *)(regs->tpc+8)); + err |= get_user(mov2, (unsigned int *)(regs->tpc+12)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + mov1 == 0x8210000FU && + (call & 0xC0000000U) == 0x40000000U && + mov2 == 0x9E100001U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = regs->u_regs[UREG_RETPC]; + addr = regs->tpc + 4 + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #5 */ + unsigned int sethi, sethi1, sethi2, or1, or2, sllx, jmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); + err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); + err |= get_user(or1, (unsigned int *)(regs->tpc+12)); + err |= get_user(or2, (unsigned int *)(regs->tpc+16)); + err |= get_user(sllx, (unsigned int *)(regs->tpc+20)); + err |= get_user(jmpl, (unsigned int *)(regs->tpc+24)); + err |= get_user(nop, (unsigned int *)(regs->tpc+28)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x0B000000U && + (or1 & 0xFFFFE000U) == 0x82106000U && + (or2 & 0xFFFFE000U) == 0x8A116000U && + sllx == 0x83287020U && + jmpl == 0x81C04005U && + nop == 0x01000000U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); + regs->u_regs[UREG_G1] <<= 32; + regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); + addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: patched PLT emulation #6 */ + unsigned int sethi, sethi1, sethi2, sllx, or, jmpl, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(sethi1, (unsigned int *)(regs->tpc+4)); + err |= get_user(sethi2, (unsigned int *)(regs->tpc+8)); + err |= get_user(sllx, (unsigned int *)(regs->tpc+12)); + err |= get_user(or, (unsigned int *)(regs->tpc+16)); + err |= get_user(jmpl, (unsigned int *)(regs->tpc+20)); + err |= get_user(nop, (unsigned int *)(regs->tpc+24)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (sethi1 & 0xFFC00000U) == 0x03000000U && + (sethi2 & 0xFFC00000U) == 0x0B000000U && + sllx == 0x83287020U && + (or & 0xFFFFE000U) == 0x8A116000U && + jmpl == 0x81C04005U && + nop == 0x01000000U) + { + unsigned long addr; + + regs->u_regs[UREG_G1] = (sethi1 & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] <<= 32; + regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or & 0x3FFU); + addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5]; + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + + do { /* PaX: unpatched PLT emulation step 1 */ + unsigned int sethi, ba, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(ba, (unsigned int *)(regs->tpc+4)); + err |= get_user(nop, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) && + nop == 0x01000000U) + { + unsigned long addr; + unsigned int save, call; + unsigned int sethi1, sethi2, or1, or2, sllx, add, jmpl; + + if ((ba & 0xFFC00000U) == 0x30800000U) + addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2); + else + addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + err = get_user(save, (unsigned int *)addr); + err |= get_user(call, (unsigned int *)(addr+4)); + err |= get_user(nop, (unsigned int *)(addr+8)); + if (err) + break; + +#ifdef CONFIG_PAX_DLRESOLVE + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + struct vm_area_struct *vma; + unsigned long call_dl_resolve; + + down_read(¤t->mm->mmap_sem); + call_dl_resolve = current->mm->call_dl_resolve; + up_read(¤t->mm->mmap_sem); + if (likely(call_dl_resolve)) + goto emulate; + + vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL); + + down_write(¤t->mm->mmap_sem); + if (current->mm->call_dl_resolve) { + call_dl_resolve = current->mm->call_dl_resolve; + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + goto emulate; + } + + call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE); + if (!vma || (call_dl_resolve & ~PAGE_MASK)) { + up_write(¤t->mm->mmap_sem); + if (vma) + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + if (pax_insert_vma(vma, call_dl_resolve)) { + up_write(¤t->mm->mmap_sem); + kmem_cache_free(vm_area_cachep, vma); + return 1; + } + + current->mm->call_dl_resolve = call_dl_resolve; + up_write(¤t->mm->mmap_sem); + +emulate: + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->tpc = call_dl_resolve; + regs->tnpc = addr+4; + return 3; + } +#endif + + /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */ + if ((save & 0xFFC00000U) == 0x05000000U && + (call & 0xFFFFE000U) == 0x85C0A000U && + nop == 0x01000000U) + { + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G2] = addr + 4; + addr = (save & 0x003FFFFFU) << 10; + addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 3; + } + + /* PaX: 64-bit PLT stub */ + err = get_user(sethi1, (unsigned int *)addr); + err |= get_user(sethi2, (unsigned int *)(addr+4)); + err |= get_user(or1, (unsigned int *)(addr+8)); + err |= get_user(or2, (unsigned int *)(addr+12)); + err |= get_user(sllx, (unsigned int *)(addr+16)); + err |= get_user(add, (unsigned int *)(addr+20)); + err |= get_user(jmpl, (unsigned int *)(addr+24)); + err |= get_user(nop, (unsigned int *)(addr+28)); + if (err) + break; + + if ((sethi1 & 0xFFC00000U) == 0x09000000U && + (sethi2 & 0xFFC00000U) == 0x0B000000U && + (or1 & 0xFFFFE000U) == 0x88112000U && + (or2 & 0xFFFFE000U) == 0x8A116000U && + sllx == 0x89293020U && + add == 0x8A010005U && + jmpl == 0x89C14000U && + nop == 0x01000000U) + { + regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G4] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU); + regs->u_regs[UREG_G4] <<= 32; + regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU); + regs->u_regs[UREG_G5] += regs->u_regs[UREG_G4]; + regs->u_regs[UREG_G4] = addr + 24; + addr = regs->u_regs[UREG_G5]; + regs->tpc = addr; + regs->tnpc = addr+4; + return 3; + } + } + } while (0); + +#ifdef CONFIG_PAX_DLRESOLVE + do { /* PaX: unpatched PLT emulation step 2 */ + unsigned int save, call, nop; + + err = get_user(save, (unsigned int *)(regs->tpc-4)); + err |= get_user(call, (unsigned int *)regs->tpc); + err |= get_user(nop, (unsigned int *)(regs->tpc+4)); + if (err) + break; + + if (save == 0x9DE3BFA8U && + (call & 0xC0000000U) == 0x40000000U && + nop == 0x01000000U) + { + unsigned long dl_resolve = regs->tpc + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + dl_resolve &= 0xFFFFFFFFUL; + + regs->u_regs[UREG_RETPC] = regs->tpc; + regs->tpc = dl_resolve; + regs->tnpc = dl_resolve+4; + return 3; + } + } while (0); +#endif + + do { /* PaX: patched PLT emulation #7, must be AFTER the unpatched PLT emulation */ + unsigned int sethi, ba, nop; + + err = get_user(sethi, (unsigned int *)regs->tpc); + err |= get_user(ba, (unsigned int *)(regs->tpc+4)); + err |= get_user(nop, (unsigned int *)(regs->tpc+8)); + + if (err) + break; + + if ((sethi & 0xFFC00000U) == 0x03000000U && + (ba & 0xFFF00000U) == 0x30600000U && + nop == 0x01000000U) + { + unsigned long addr; + + addr = (sethi & 0x003FFFFFU) << 10; + regs->u_regs[UREG_G1] = addr; + addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2); + + if (test_thread_flag(TIF_32BIT)) + addr &= 0xFFFFFFFFUL; + + regs->tpc = addr; + regs->tnpc = addr+4; + return 2; + } + } while (0); + +#endif + + return 1; +} + +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + unsigned long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 8; i++) { + unsigned int c; + if (get_user(c, (unsigned int *)pc+i)) + printk(KERN_CONT "???????? "); + else + printk(KERN_CONT "%08x ", c); + } + printk("\n"); +} +#endif + asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) { struct mm_struct *mm = current->mm; @@ -315,6 +777,29 @@ asmlinkage void __kprobes do_sparc64_fau if (!vma) goto bad_area; +#ifdef CONFIG_PAX_PAGEEXEC + /* PaX: detect ITLB misses on non-exec pages */ + if ((mm->pax_flags & MF_PAX_PAGEEXEC) && vma->vm_start <= address && + !(vma->vm_flags & VM_EXEC) && (fault_code & FAULT_CODE_ITLB)) + { + if (address != regs->tpc) + goto good_area; + + up_read(&mm->mmap_sem); + switch (pax_handle_fetch_fault(regs)) { + +#ifdef CONFIG_PAX_EMUPLT + case 2: + case 3: + return; +#endif + + } + pax_report_fault(regs, (void *)regs->tpc, (void *)(regs->u_regs[UREG_FP] + STACK_BIAS)); + do_group_exit(SIGKILL); + } +#endif + /* Pure DTLB misses do not tell us whether the fault causing * load/store/atomic was a write or not, it only says that there * was no match. So in such a case we (carefully) read the diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/mm/hugetlbpage.c linux-2.6.32.59-pax/arch/sparc/mm/hugetlbpage.c --- linux-2.6.32.59/arch/sparc/mm/hugetlbpage.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/mm/hugetlbpage.c 2012-03-13 13:15:34.400098029 +0100 @@ -69,7 +69,7 @@ full_search: } return -ENOMEM; } - if (likely(!vma || addr + len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* * Remember the place where we stopped the search: */ @@ -108,7 +108,7 @@ hugetlb_get_unmapped_area_topdown(struct /* make sure it can fit in the remaining address space */ if (likely(addr > len)) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr - len, len)) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr-len); } @@ -117,16 +117,17 @@ hugetlb_get_unmapped_area_topdown(struct if (unlikely(mm->mmap_base < len)) goto bottomup; - addr = (mm->mmap_base-len) & HPAGE_MASK; + addr = mm->mmap_base - len; do { + addr &= HPAGE_MASK; /* * Lookup failure means no vma is above this address, * else if new region fits below vma->vm_start, * return with success: */ vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { + if (likely(check_heap_stack_gap(vma, addr, len))) { /* remember the address as a hint for next time */ return (mm->free_area_cache = addr); } @@ -136,8 +137,8 @@ hugetlb_get_unmapped_area_topdown(struct mm->cached_hole_size = vma->vm_start - addr; /* try just below the current vma->vm_start */ - addr = (vma->vm_start-len) & HPAGE_MASK; - } while (likely(len < vma->vm_start)); + addr = skip_heap_stack_gap(vma, len); + } while (!IS_ERR_VALUE(addr)); bottomup: /* @@ -183,8 +184,7 @@ hugetlb_get_unmapped_area(struct file *f if (addr) { addr = ALIGN(addr, HPAGE_SIZE); vma = find_vma(mm, addr); - if (task_size - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/mm/init_32.c linux-2.6.32.59-pax/arch/sparc/mm/init_32.c --- linux-2.6.32.59/arch/sparc/mm/init_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/mm/init_32.c 2012-03-13 13:15:34.400098029 +0100 @@ -317,6 +317,9 @@ extern void device_scan(void); pgprot_t PAGE_SHARED __read_mostly; EXPORT_SYMBOL(PAGE_SHARED); +pgprot_t PAGE_SHARED_NOEXEC __read_mostly; +EXPORT_SYMBOL(PAGE_SHARED_NOEXEC); + void __init paging_init(void) { switch(sparc_cpu_model) { @@ -345,17 +348,17 @@ void __init paging_init(void) /* Initialize the protection map with non-constant, MMU dependent values. */ protection_map[0] = PAGE_NONE; - protection_map[1] = PAGE_READONLY; - protection_map[2] = PAGE_COPY; - protection_map[3] = PAGE_COPY; + protection_map[1] = PAGE_READONLY_NOEXEC; + protection_map[2] = PAGE_COPY_NOEXEC; + protection_map[3] = PAGE_COPY_NOEXEC; protection_map[4] = PAGE_READONLY; protection_map[5] = PAGE_READONLY; protection_map[6] = PAGE_COPY; protection_map[7] = PAGE_COPY; protection_map[8] = PAGE_NONE; - protection_map[9] = PAGE_READONLY; - protection_map[10] = PAGE_SHARED; - protection_map[11] = PAGE_SHARED; + protection_map[9] = PAGE_READONLY_NOEXEC; + protection_map[10] = PAGE_SHARED_NOEXEC; + protection_map[11] = PAGE_SHARED_NOEXEC; protection_map[12] = PAGE_READONLY; protection_map[13] = PAGE_READONLY; protection_map[14] = PAGE_SHARED; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/mm/Makefile linux-2.6.32.59-pax/arch/sparc/mm/Makefile --- linux-2.6.32.59/arch/sparc/mm/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/mm/Makefile 2012-03-13 13:15:34.400098029 +0100 @@ -2,7 +2,7 @@ # asflags-y := -ansi -ccflags-y := -Werror +#ccflags-y := -Werror obj-$(CONFIG_SPARC64) += ultra.o tlb.o tsb.o obj-y += fault_$(BITS).o diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/sparc/mm/srmmu.c linux-2.6.32.59-pax/arch/sparc/mm/srmmu.c --- linux-2.6.32.59/arch/sparc/mm/srmmu.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/sparc/mm/srmmu.c 2012-03-13 13:15:34.404098029 +0100 @@ -2200,6 +2200,13 @@ void __init ld_mmu_srmmu(void) PAGE_SHARED = pgprot_val(SRMMU_PAGE_SHARED); BTFIXUPSET_INT(page_copy, pgprot_val(SRMMU_PAGE_COPY)); BTFIXUPSET_INT(page_readonly, pgprot_val(SRMMU_PAGE_RDONLY)); + +#ifdef CONFIG_PAX_PAGEEXEC + PAGE_SHARED_NOEXEC = pgprot_val(SRMMU_PAGE_SHARED_NOEXEC); + BTFIXUPSET_INT(page_copy_noexec, pgprot_val(SRMMU_PAGE_COPY_NOEXEC)); + BTFIXUPSET_INT(page_readonly_noexec, pgprot_val(SRMMU_PAGE_RDONLY_NOEXEC)); +#endif + BTFIXUPSET_INT(page_kernel, pgprot_val(SRMMU_PAGE_KERNEL)); page_kernel = pgprot_val(SRMMU_PAGE_KERNEL); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/include/asm/kmap_types.h linux-2.6.32.59-pax/arch/um/include/asm/kmap_types.h --- linux-2.6.32.59/arch/um/include/asm/kmap_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/include/asm/kmap_types.h 2012-03-13 13:15:34.404098029 +0100 @@ -23,6 +23,7 @@ enum km_type { KM_IRQ1, KM_SOFTIRQ0, KM_SOFTIRQ1, + KM_CLEARPAGE, KM_TYPE_NR }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/include/asm/page.h linux-2.6.32.59-pax/arch/um/include/asm/page.h --- linux-2.6.32.59/arch/um/include/asm/page.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/include/asm/page.h 2012-03-13 13:15:34.404098029 +0100 @@ -14,6 +14,9 @@ #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) + #ifndef __ASSEMBLY__ struct page; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/include/asm/pgtable-3level.h linux-2.6.32.59-pax/arch/um/include/asm/pgtable-3level.h --- linux-2.6.32.59/arch/um/include/asm/pgtable-3level.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/include/asm/pgtable-3level.h 2012-05-07 17:51:43.320106543 +0200 @@ -58,6 +58,7 @@ #define pud_present(x) (pud_val(x) & _PAGE_PRESENT) #define pud_populate(mm, pud, pmd) \ set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd))) +#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd)) #ifdef CONFIG_64BIT #define set_pud(pudptr, pudval) set_64bit((phys_t *) (pudptr), pud_val(pudval)) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/kernel/process.c linux-2.6.32.59-pax/arch/um/kernel/process.c --- linux-2.6.32.59/arch/um/kernel/process.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/kernel/process.c 2012-03-13 13:15:34.408098029 +0100 @@ -393,22 +393,6 @@ int singlestepping(void * t) return 2; } -/* - * Only x86 and x86_64 have an arch_align_stack(). - * All other arches have "#define arch_align_stack(x) (x)" - * in their asm/system.h - * As this is included in UML from asm-um/system-generic.h, - * we can use it to behave as the subarch does. - */ -#ifndef arch_align_stack -unsigned long arch_align_stack(unsigned long sp) -{ - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() % 8192; - return sp & ~0xf; -} -#endif - unsigned long get_wchan(struct task_struct *p) { unsigned long stack_page, sp, ip; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/Makefile linux-2.6.32.59-pax/arch/um/Makefile --- linux-2.6.32.59/arch/um/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/Makefile 2012-09-26 14:55:45.568343667 +0200 @@ -49,6 +49,10 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINE $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 +ifdef CONSTIFY_PLUGIN +USER_CFLAGS += -fplugin-arg-constify_plugin-no-constify +endif + include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) #This will adjust *FLAGS accordingly to the platform. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/sys-i386/shared/sysdep/system.h linux-2.6.32.59-pax/arch/um/sys-i386/shared/sysdep/system.h --- linux-2.6.32.59/arch/um/sys-i386/shared/sysdep/system.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/sys-i386/shared/sysdep/system.h 2012-03-13 13:15:34.408098029 +0100 @@ -17,7 +17,7 @@ # define AT_VECTOR_SIZE_ARCH 1 #endif -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ~0xfUL) void default_idle(void); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/sys-i386/syscalls.c linux-2.6.32.59-pax/arch/um/sys-i386/syscalls.c --- linux-2.6.32.59/arch/um/sys-i386/syscalls.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/sys-i386/syscalls.c 2012-03-13 13:15:34.408098029 +0100 @@ -11,6 +11,21 @@ #include "asm/uaccess.h" #include "asm/unistd.h" +int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) +{ + unsigned long pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (current->mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + if (len > pax_task_size || addr > pax_task_size - len) + return -EINVAL; + + return 0; +} + /* * Perform the select(nd, in, out, ex, tv) and mmap() system * calls. Linux/i386 didn't use to be able to handle more than diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/um/sys-x86_64/shared/sysdep/system.h linux-2.6.32.59-pax/arch/um/sys-x86_64/shared/sysdep/system.h --- linux-2.6.32.59/arch/um/sys-x86_64/shared/sysdep/system.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/um/sys-x86_64/shared/sysdep/system.h 2012-03-13 13:15:34.408098029 +0100 @@ -17,7 +17,7 @@ # define AT_VECTOR_SIZE_ARCH 1 #endif -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ~0xfUL) void default_idle(void); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/bitops.h linux-2.6.32.59-pax/arch/x86/boot/bitops.h --- linux-2.6.32.59/arch/x86/boot/bitops.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/bitops.h 2012-03-13 13:15:34.412098028 +0100 @@ -26,7 +26,7 @@ static inline int variable_test_bit(int u8 v; const u32 *p = (const u32 *)addr; - asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); + asm volatile("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr)); return v; } @@ -37,7 +37,7 @@ static inline int variable_test_bit(int static inline void set_bit(int nr, void *addr) { - asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); + asm volatile("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr)); } #endif /* BOOT_BITOPS_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/boot.h linux-2.6.32.59-pax/arch/x86/boot/boot.h --- linux-2.6.32.59/arch/x86/boot/boot.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/boot.h 2012-03-13 13:15:34.412098028 +0100 @@ -82,7 +82,7 @@ static inline void io_delay(void) static inline u16 ds(void) { u16 seg; - asm("movw %%ds,%0" : "=rm" (seg)); + asm volatile("movw %%ds,%0" : "=rm" (seg)); return seg; } @@ -178,7 +178,7 @@ static inline void wrgs32(u32 v, addr_t static inline int memcmp(const void *s1, const void *s2, size_t len) { u8 diff; - asm("repe; cmpsb; setnz %0" + asm volatile("repe; cmpsb; setnz %0" : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); return diff; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/compressed/head_32.S linux-2.6.32.59-pax/arch/x86/boot/compressed/head_32.S --- linux-2.6.32.59/arch/x86/boot/compressed/head_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/compressed/head_32.S 2012-03-13 13:15:34.412098028 +0100 @@ -76,7 +76,7 @@ ENTRY(startup_32) notl %eax andl %eax, %ebx #else - movl $LOAD_PHYSICAL_ADDR, %ebx + movl $____LOAD_PHYSICAL_ADDR, %ebx #endif /* Target address to relocate to for decompression */ @@ -149,7 +149,7 @@ relocated: * and where it was actually loaded. */ movl %ebp, %ebx - subl $LOAD_PHYSICAL_ADDR, %ebx + subl $____LOAD_PHYSICAL_ADDR, %ebx jz 2f /* Nothing to be done if loaded at compiled addr. */ /* * Process relocations. @@ -157,8 +157,7 @@ relocated: 1: subl $4, %edi movl (%edi), %ecx - testl %ecx, %ecx - jz 2f + jecxz 2f addl %ebx, -__PAGE_OFFSET(%ebx, %ecx) jmp 1b 2: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/compressed/head_64.S linux-2.6.32.59-pax/arch/x86/boot/compressed/head_64.S --- linux-2.6.32.59/arch/x86/boot/compressed/head_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/compressed/head_64.S 2012-03-13 13:15:34.412098028 +0100 @@ -91,7 +91,7 @@ ENTRY(startup_32) notl %eax andl %eax, %ebx #else - movl $LOAD_PHYSICAL_ADDR, %ebx + movl $____LOAD_PHYSICAL_ADDR, %ebx #endif /* Target address to relocate to for decompression */ @@ -234,7 +234,7 @@ ENTRY(startup_64) notq %rax andq %rax, %rbp #else - movq $LOAD_PHYSICAL_ADDR, %rbp + movq $____LOAD_PHYSICAL_ADDR, %rbp #endif /* Target address to relocate to for decompression */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/compressed/Makefile linux-2.6.32.59-pax/arch/x86/boot/compressed/Makefile --- linux-2.6.32.59/arch/x86/boot/compressed/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/compressed/Makefile 2012-09-24 22:35:58.168025407 +0200 @@ -13,6 +13,9 @@ cflags-$(CONFIG_X86_64) := -mcmodel=smal KBUILD_CFLAGS += $(cflags-y) KBUILD_CFLAGS += $(call cc-option,-ffreestanding) KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) +ifdef CONSTIFY_PLUGIN +KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify +endif KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ GCOV_PROFILE := n diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/compressed/misc.c linux-2.6.32.59-pax/arch/x86/boot/compressed/misc.c --- linux-2.6.32.59/arch/x86/boot/compressed/misc.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/compressed/misc.c 2012-03-13 13:15:34.416098028 +0100 @@ -288,7 +288,7 @@ static void parse_elf(void *output) case PT_LOAD: #ifdef CONFIG_RELOCATABLE dest = output; - dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR); + dest += (phdr->p_paddr - ____LOAD_PHYSICAL_ADDR); #else dest = (void *)(phdr->p_paddr); #endif @@ -335,7 +335,7 @@ asmlinkage void decompress_kernel(void * error("Destination address too large"); #endif #ifndef CONFIG_RELOCATABLE - if ((unsigned long)output != LOAD_PHYSICAL_ADDR) + if ((unsigned long)output != ____LOAD_PHYSICAL_ADDR) error("Wrong destination address"); #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/compressed/mkpiggy.c linux-2.6.32.59-pax/arch/x86/boot/compressed/mkpiggy.c --- linux-2.6.32.59/arch/x86/boot/compressed/mkpiggy.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/compressed/mkpiggy.c 2012-03-13 13:15:34.416098028 +0100 @@ -74,7 +74,7 @@ int main(int argc, char *argv[]) offs = (olen > ilen) ? olen - ilen : 0; offs += olen >> 12; /* Add 8 bytes for each 32K block */ - offs += 32*1024 + 18; /* Add 32K + 18 bytes slack */ + offs += 64*1024; /* Add 64K bytes slack */ offs = (offs+4095) & ~4095; /* Round to a 4K boundary */ printf(".section \".rodata.compressed\",\"a\",@progbits\n"); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/compressed/relocs.c linux-2.6.32.59-pax/arch/x86/boot/compressed/relocs.c --- linux-2.6.32.59/arch/x86/boot/compressed/relocs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/compressed/relocs.c 2012-07-31 00:33:20.948078635 +0200 @@ -10,8 +10,11 @@ #define USE_BSD #include +#include "../../../../include/linux/autoconf.h" + #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) static Elf32_Ehdr ehdr; +static Elf32_Phdr *phdr; static unsigned long reloc_count, reloc_idx; static unsigned long *relocs; @@ -37,7 +40,7 @@ static const char* safe_abs_relocs[] = { static int is_safe_abs_reloc(const char* sym_name) { - int i; + unsigned int i; for (i = 0; i < ARRAY_SIZE(safe_abs_relocs); i++) { if (!strcmp(sym_name, safe_abs_relocs[i])) @@ -245,9 +248,39 @@ static void read_ehdr(FILE *fp) } } +static void read_phdrs(FILE *fp) +{ + unsigned int i; + + phdr = calloc(ehdr.e_phnum, sizeof(Elf32_Phdr)); + if (!phdr) { + die("Unable to allocate %d program headers\n", + ehdr.e_phnum); + } + if (fseek(fp, ehdr.e_phoff, SEEK_SET) < 0) { + die("Seek to %d failed: %s\n", + ehdr.e_phoff, strerror(errno)); + } + if (fread(phdr, sizeof(*phdr), ehdr.e_phnum, fp) != ehdr.e_phnum) { + die("Cannot read ELF program headers: %s\n", + strerror(errno)); + } + for(i = 0; i < ehdr.e_phnum; i++) { + phdr[i].p_type = elf32_to_cpu(phdr[i].p_type); + phdr[i].p_offset = elf32_to_cpu(phdr[i].p_offset); + phdr[i].p_vaddr = elf32_to_cpu(phdr[i].p_vaddr); + phdr[i].p_paddr = elf32_to_cpu(phdr[i].p_paddr); + phdr[i].p_filesz = elf32_to_cpu(phdr[i].p_filesz); + phdr[i].p_memsz = elf32_to_cpu(phdr[i].p_memsz); + phdr[i].p_flags = elf32_to_cpu(phdr[i].p_flags); + phdr[i].p_align = elf32_to_cpu(phdr[i].p_align); + } + +} + static void read_shdrs(FILE *fp) { - int i; + unsigned int i; Elf32_Shdr shdr; secs = calloc(ehdr.e_shnum, sizeof(struct section)); @@ -282,7 +315,7 @@ static void read_shdrs(FILE *fp) static void read_strtabs(FILE *fp) { - int i; + unsigned int i; for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_STRTAB) { @@ -307,7 +340,7 @@ static void read_strtabs(FILE *fp) static void read_symtabs(FILE *fp) { - int i,j; + unsigned int i,j; for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_SYMTAB) { @@ -340,7 +373,9 @@ static void read_symtabs(FILE *fp) static void read_relocs(FILE *fp) { - int i,j; + unsigned int i,j; + uint32_t base; + for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_REL) { @@ -360,9 +395,18 @@ static void read_relocs(FILE *fp) die("Cannot read symbol table: %s\n", strerror(errno)); } + base = 0; + for (j = 0; j < ehdr.e_phnum; j++) { + if (phdr[j].p_type != PT_LOAD ) + continue; + if (secs[sec->shdr.sh_info].shdr.sh_offset < phdr[j].p_offset || secs[sec->shdr.sh_info].shdr.sh_offset >= phdr[j].p_offset + phdr[j].p_filesz) + continue; + base = CONFIG_PAGE_OFFSET + phdr[j].p_paddr - phdr[j].p_vaddr; + break; + } for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Rel); j++) { Elf32_Rel *rel = &sec->reltab[j]; - rel->r_offset = elf32_to_cpu(rel->r_offset); + rel->r_offset = elf32_to_cpu(rel->r_offset) + base; rel->r_info = elf32_to_cpu(rel->r_info); } } @@ -371,14 +415,14 @@ static void read_relocs(FILE *fp) static void print_absolute_symbols(void) { - int i; + unsigned int i; printf("Absolute symbols\n"); printf(" Num: Value Size Type Bind Visibility Name\n"); for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; char *sym_strtab; Elf32_Sym *sh_symtab; - int j; + unsigned int j; if (sec->shdr.sh_type != SHT_SYMTAB) { continue; @@ -406,14 +450,14 @@ static void print_absolute_symbols(void) static void print_absolute_relocs(void) { - int i, printed = 0; + unsigned int i, printed = 0; for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; struct section *sec_applies, *sec_symtab; char *sym_strtab; Elf32_Sym *sh_symtab; - int j; + unsigned int j; if (sec->shdr.sh_type != SHT_REL) { continue; } @@ -474,13 +518,13 @@ static void print_absolute_relocs(void) static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym)) { - int i; + unsigned int i; /* Walk through the relocations */ for (i = 0; i < ehdr.e_shnum; i++) { char *sym_strtab; Elf32_Sym *sh_symtab; struct section *sec_applies, *sec_symtab; - int j; + unsigned int j; struct section *sec = &secs[i]; if (sec->shdr.sh_type != SHT_REL) { @@ -504,6 +548,21 @@ static void walk_relocs(void (*visit)(El if (sym->st_shndx == SHN_ABS) { continue; } + /* Don't relocate actual per-cpu variables, they are absolute indices, not addresses */ + if (!strcmp(sec_name(sym->st_shndx), ".data.percpu") && strcmp(sym_name(sym_strtab, sym), "__per_cpu_load")) + continue; + +#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_X86_32) + /* Don't relocate actual code, they are relocated implicitly by the base address of KERNEL_CS */ + if (!strcmp(sec_name(sym->st_shndx), ".text.end") && !strcmp(sym_name(sym_strtab, sym), "_etext")) + continue; + if (!strcmp(sec_name(sym->st_shndx), ".init.text")) + continue; + if (!strcmp(sec_name(sym->st_shndx), ".exit.text")) + continue; + if (!strcmp(sec_name(sym->st_shndx), ".text") && strcmp(sym_name(sym_strtab, sym), "__LOAD_PHYSICAL_ADDR")) + continue; +#endif if (r_type == R_386_NONE || r_type == R_386_PC32) { /* * NONE can be ignored and and PC relative @@ -541,7 +600,7 @@ static int cmp_relocs(const void *va, co static void emit_relocs(int as_text) { - int i; + unsigned int i; /* Count how many relocations I have and allocate space for them. */ reloc_count = 0; walk_relocs(count_reloc); @@ -634,6 +693,7 @@ int main(int argc, char **argv) fname, strerror(errno)); } read_ehdr(fp); + read_phdrs(fp); read_shdrs(fp); read_strtabs(fp); read_symtabs(fp); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/cpucheck.c linux-2.6.32.59-pax/arch/x86/boot/cpucheck.c --- linux-2.6.32.59/arch/x86/boot/cpucheck.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/cpucheck.c 2012-03-13 13:15:34.420098028 +0100 @@ -74,7 +74,7 @@ static int has_fpu(void) u16 fcw = -1, fsw = -1; u32 cr0; - asm("movl %%cr0,%0" : "=r" (cr0)); + asm volatile("movl %%cr0,%0" : "=r" (cr0)); if (cr0 & (X86_CR0_EM|X86_CR0_TS)) { cr0 &= ~(X86_CR0_EM|X86_CR0_TS); asm volatile("movl %0,%%cr0" : : "r" (cr0)); @@ -90,7 +90,7 @@ static int has_eflag(u32 mask) { u32 f0, f1; - asm("pushfl ; " + asm volatile("pushfl ; " "pushfl ; " "popl %0 ; " "movl %0,%1 ; " @@ -115,7 +115,7 @@ static void get_flags(void) set_bit(X86_FEATURE_FPU, cpu.flags); if (has_eflag(X86_EFLAGS_ID)) { - asm("cpuid" + asm volatile("cpuid" : "=a" (max_intel_level), "=b" (cpu_vendor[0]), "=d" (cpu_vendor[1]), @@ -124,7 +124,7 @@ static void get_flags(void) if (max_intel_level >= 0x00000001 && max_intel_level <= 0x0000ffff) { - asm("cpuid" + asm volatile("cpuid" : "=a" (tfms), "=c" (cpu.flags[4]), "=d" (cpu.flags[0]) @@ -136,7 +136,7 @@ static void get_flags(void) cpu.model += ((tfms >> 16) & 0xf) << 4; } - asm("cpuid" + asm volatile("cpuid" : "=a" (max_amd_level) : "a" (0x80000000) : "ebx", "ecx", "edx"); @@ -144,7 +144,7 @@ static void get_flags(void) if (max_amd_level >= 0x80000001 && max_amd_level <= 0x8000ffff) { u32 eax = 0x80000001; - asm("cpuid" + asm volatile("cpuid" : "+a" (eax), "=c" (cpu.flags[6]), "=d" (cpu.flags[1]) @@ -203,9 +203,9 @@ int check_cpu(int *cpu_level_ptr, int *r u32 ecx = MSR_K7_HWCR; u32 eax, edx; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); eax &= ~(1 << 15); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); get_flags(); /* Make sure it really did something */ err = check_flags(); @@ -218,9 +218,9 @@ int check_cpu(int *cpu_level_ptr, int *r u32 ecx = MSR_VIA_FCR; u32 eax, edx; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); eax |= (1<<1)|(1<<7); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); set_bit(X86_FEATURE_CX8, cpu.flags); err = check_flags(); @@ -231,12 +231,12 @@ int check_cpu(int *cpu_level_ptr, int *r u32 eax, edx; u32 level = 1; - asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); - asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); - asm("cpuid" + asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx)); + asm volatile("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx)); + asm volatile("cpuid" : "+a" (level), "=d" (cpu.flags[0]) : : "ecx", "ebx"); - asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); + asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx)); err = check_flags(); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/header.S linux-2.6.32.59-pax/arch/x86/boot/header.S --- linux-2.6.32.59/arch/x86/boot/header.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/header.S 2012-08-04 00:02:40.534653430 +0200 @@ -224,10 +224,14 @@ setup_data: .quad 0 # 64-bit physical # single linked list of # struct setup_data -pref_address: .quad LOAD_PHYSICAL_ADDR # preferred load addr +pref_address: .quad ____LOAD_PHYSICAL_ADDR # preferred load addr #define ZO_INIT_SIZE (ZO__end - ZO_startup_32 + ZO_z_extract_offset) +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) +#define VO_INIT_SIZE (VO__end - VO__text - __PAGE_OFFSET - ____LOAD_PHYSICAL_ADDR) +#else #define VO_INIT_SIZE (VO__end - VO__text) +#endif #if ZO_INIT_SIZE > VO_INIT_SIZE #define INIT_SIZE ZO_INIT_SIZE #else diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/Makefile linux-2.6.32.59-pax/arch/x86/boot/Makefile --- linux-2.6.32.59/arch/x86/boot/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/Makefile 2012-09-24 22:35:41.936025357 +0200 @@ -69,6 +69,9 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os $(call cc-option, -fno-stack-protector) \ $(call cc-option, -mpreferred-stack-boundary=2) KBUILD_CFLAGS += $(call cc-option, -m32) +ifdef CONSTIFY_PLUGIN +KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify +endif KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ GCOV_PROFILE := n diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/memory.c linux-2.6.32.59-pax/arch/x86/boot/memory.c --- linux-2.6.32.59/arch/x86/boot/memory.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/memory.c 2012-03-13 13:15:34.420098028 +0100 @@ -19,7 +19,7 @@ static int detect_memory_e820(void) { - int count = 0; + unsigned int count = 0; struct biosregs ireg, oreg; struct e820entry *desc = boot_params.e820_map; static struct e820entry buf; /* static so it is zeroed */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/video.c linux-2.6.32.59-pax/arch/x86/boot/video.c --- linux-2.6.32.59/arch/x86/boot/video.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/video.c 2012-03-13 13:15:34.420098028 +0100 @@ -90,7 +90,7 @@ static void store_mode_params(void) static unsigned int get_entry(void) { char entry_buf[4]; - int i, len = 0; + unsigned int i, len = 0; int key; unsigned int v; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/boot/video-vesa.c linux-2.6.32.59-pax/arch/x86/boot/video-vesa.c --- linux-2.6.32.59/arch/x86/boot/video-vesa.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/boot/video-vesa.c 2012-03-13 13:15:34.424098028 +0100 @@ -200,6 +200,7 @@ static void vesa_store_pm_info(void) boot_params.screen_info.vesapm_seg = oreg.es; boot_params.screen_info.vesapm_off = oreg.di; + boot_params.screen_info.vesapm_size = oreg.cx; } /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/crypto/aesni-intel_asm.S linux-2.6.32.59-pax/arch/x86/crypto/aesni-intel_asm.S --- linux-2.6.32.59/arch/x86/crypto/aesni-intel_asm.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/crypto/aesni-intel_asm.S 2012-03-13 13:15:34.428098028 +0100 @@ -16,6 +16,7 @@ */ #include +#include .text @@ -52,6 +53,7 @@ _key_expansion_256a: pxor %xmm1, %xmm0 movaps %xmm0, (%rcx) add $0x10, %rcx + pax_force_retaddr_bts ret _key_expansion_192a: @@ -75,6 +77,7 @@ _key_expansion_192a: shufps $0b01001110, %xmm2, %xmm1 movaps %xmm1, 16(%rcx) add $0x20, %rcx + pax_force_retaddr_bts ret _key_expansion_192b: @@ -93,6 +96,7 @@ _key_expansion_192b: movaps %xmm0, (%rcx) add $0x10, %rcx + pax_force_retaddr_bts ret _key_expansion_256b: @@ -104,6 +108,7 @@ _key_expansion_256b: pxor %xmm1, %xmm2 movaps %xmm2, (%rcx) add $0x10, %rcx + pax_force_retaddr_bts ret /* @@ -239,7 +244,9 @@ ENTRY(aesni_set_key) cmp %rcx, %rdi jb .Ldec_key_loop xor %rax, %rax + pax_force_retaddr 0, 1 ret +ENDPROC(aesni_set_key) /* * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) @@ -249,7 +256,9 @@ ENTRY(aesni_enc) movups (INP), STATE # input call _aesni_enc1 movups STATE, (OUTP) # output + pax_force_retaddr 0, 1 ret +ENDPROC(aesni_enc) /* * _aesni_enc1: internal ABI @@ -319,6 +328,7 @@ _aesni_enc1: movaps 0x70(TKEYP), KEY # aesenclast KEY, STATE # last round .byte 0x66, 0x0f, 0x38, 0xdd, 0xc2 + pax_force_retaddr_bts ret /* @@ -482,6 +492,7 @@ _aesni_enc4: .byte 0x66, 0x0f, 0x38, 0xdd, 0xea # aesenclast KEY, STATE4 .byte 0x66, 0x0f, 0x38, 0xdd, 0xf2 + pax_force_retaddr_bts ret /* @@ -493,7 +504,9 @@ ENTRY(aesni_dec) movups (INP), STATE # input call _aesni_dec1 movups STATE, (OUTP) #output + pax_force_retaddr 0, 1 ret +ENDPROC(aesni_dec) /* * _aesni_dec1: internal ABI @@ -563,6 +576,7 @@ _aesni_dec1: movaps 0x70(TKEYP), KEY # aesdeclast KEY, STATE # last round .byte 0x66, 0x0f, 0x38, 0xdf, 0xc2 + pax_force_retaddr_bts ret /* @@ -726,6 +740,7 @@ _aesni_dec4: .byte 0x66, 0x0f, 0x38, 0xdf, 0xea # aesdeclast KEY, STATE4 .byte 0x66, 0x0f, 0x38, 0xdf, 0xf2 + pax_force_retaddr_bts ret /* @@ -769,7 +784,9 @@ ENTRY(aesni_ecb_enc) cmp $16, LEN jge .Lecb_enc_loop1 .Lecb_enc_ret: + pax_force_retaddr 0, 1 ret +ENDPROC(aesni_ecb_enc) /* * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, @@ -813,7 +830,9 @@ ENTRY(aesni_ecb_dec) cmp $16, LEN jge .Lecb_dec_loop1 .Lecb_dec_ret: + pax_force_retaddr 0, 1 ret +ENDPROC(aesni_ecb_dec) /* * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, @@ -837,7 +856,9 @@ ENTRY(aesni_cbc_enc) jge .Lcbc_enc_loop movups STATE, (IVP) .Lcbc_enc_ret: + pax_force_retaddr 0, 1 ret +ENDPROC(aesni_cbc_enc) /* * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, @@ -894,4 +915,6 @@ ENTRY(aesni_cbc_dec) .Lcbc_dec_ret: movups IV, (IVP) .Lcbc_dec_just_ret: + pax_force_retaddr 0, 1 ret +ENDPROC(aesni_cbc_dec) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/crypto/aes-x86_64-asm_64.S linux-2.6.32.59-pax/arch/x86/crypto/aes-x86_64-asm_64.S --- linux-2.6.32.59/arch/x86/crypto/aes-x86_64-asm_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/crypto/aes-x86_64-asm_64.S 2012-03-13 13:15:34.428098028 +0100 @@ -8,6 +8,8 @@ * including this sentence is retained in full. */ +#include + .extern crypto_ft_tab .extern crypto_it_tab .extern crypto_fl_tab @@ -71,6 +73,8 @@ FUNC: movq r1,r2; \ je B192; \ leaq 32(r9),r9; +#define ret pax_force_retaddr 0, 1; ret + #define epilogue(r1,r2,r3,r4,r5,r6,r7,r8,r9) \ movq r1,r2; \ movq r3,r4; \ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/crypto/salsa20-x86_64-asm_64.S linux-2.6.32.59-pax/arch/x86/crypto/salsa20-x86_64-asm_64.S --- linux-2.6.32.59/arch/x86/crypto/salsa20-x86_64-asm_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/crypto/salsa20-x86_64-asm_64.S 2012-03-13 13:15:34.428098028 +0100 @@ -1,3 +1,5 @@ +#include + # enter ECRYPT_encrypt_bytes .text .p2align 5 @@ -790,6 +792,7 @@ ECRYPT_encrypt_bytes: add %r11,%rsp mov %rdi,%rax mov %rsi,%rdx + pax_force_retaddr 0, 1 ret # bytesatleast65: ._bytesatleast65: @@ -891,6 +894,7 @@ ECRYPT_keysetup: add %r11,%rsp mov %rdi,%rax mov %rsi,%rdx + pax_force_retaddr ret # enter ECRYPT_ivsetup .text @@ -917,4 +921,5 @@ ECRYPT_ivsetup: add %r11,%rsp mov %rdi,%rax mov %rsi,%rdx + pax_force_retaddr ret diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/crypto/twofish-x86_64-asm_64.S linux-2.6.32.59-pax/arch/x86/crypto/twofish-x86_64-asm_64.S --- linux-2.6.32.59/arch/x86/crypto/twofish-x86_64-asm_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/crypto/twofish-x86_64-asm_64.S 2012-03-13 13:15:34.432098027 +0100 @@ -21,6 +21,7 @@ .text #include +#include #define a_offset 0 #define b_offset 4 @@ -269,6 +270,7 @@ twofish_enc_blk: popq R1 movq $1,%rax + pax_force_retaddr 0, 1 ret twofish_dec_blk: @@ -321,4 +323,5 @@ twofish_dec_blk: popq R1 movq $1,%rax + pax_force_retaddr 0, 1 ret diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/ia32/ia32entry.S linux-2.6.32.59-pax/arch/x86/ia32/ia32entry.S --- linux-2.6.32.59/arch/x86/ia32/ia32entry.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/ia32/ia32entry.S 2012-08-25 11:16:46.269915728 +0200 @@ -13,7 +13,9 @@ #include #include #include +#include #include +#include /* Avoid __ASSEMBLER__'ifying just for this. */ #include @@ -93,6 +95,32 @@ ENTRY(native_irq_enable_sysexit) ENDPROC(native_irq_enable_sysexit) #endif + .macro pax_enter_kernel_user + pax_set_fptr_mask +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_enter_kernel_user +#endif + .endm + + .macro pax_exit_kernel_user +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_exit_kernel_user +#endif +#ifdef CONFIG_PAX_RANDKSTACK + pushq %rax + pushq %r11 + call pax_randomize_kstack + popq %r11 + popq %rax +#endif + .endm + +.macro pax_erase_kstack +#ifdef CONFIG_PAX_MEMORY_STACKLEAK + call pax_erase_kstack +#endif +.endm + /* * 32bit SYSENTER instruction entry. * @@ -119,12 +147,6 @@ ENTRY(ia32_sysenter_target) CFI_REGISTER rsp,rbp SWAPGS_UNSAFE_STACK movq PER_CPU_VAR(kernel_stack), %rsp - addq $(KERNEL_STACK_OFFSET),%rsp - /* - * No need to follow this irqs on/off section: the syscall - * disabled irqs, here we enable it straight after entry: - */ - ENABLE_INTERRUPTS(CLBR_NONE) movl %ebp,%ebp /* zero extension */ pushq $__USER32_DS CFI_ADJUST_CFA_OFFSET 8 @@ -135,28 +157,47 @@ ENTRY(ia32_sysenter_target) pushfq CFI_ADJUST_CFA_OFFSET 8 /*CFI_REL_OFFSET rflags,0*/ - movl 8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d - CFI_REGISTER rip,r10 + orl $X86_EFLAGS_IF,(%rsp) + GET_THREAD_INFO(%r11) + movl TI_sysenter_return(%r11), %r11d + CFI_REGISTER rip,r11 pushq $__USER32_CS CFI_ADJUST_CFA_OFFSET 8 /*CFI_REL_OFFSET cs,0*/ movl %eax, %eax - pushq %r10 + pushq %r11 CFI_ADJUST_CFA_OFFSET 8 CFI_REL_OFFSET rip,0 pushq %rax CFI_ADJUST_CFA_OFFSET 8 cld SAVE_ARGS 0,0,1 + pax_enter_kernel_user + +#ifdef CONFIG_PAX_RANDKSTACK + pax_erase_kstack +#endif + + /* + * No need to follow this irqs on/off section: the syscall + * disabled irqs, here we enable it straight after entry: + */ + ENABLE_INTERRUPTS(CLBR_NONE) /* no need to do an access_ok check here because rbp has been 32bit zero extended */ + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%r11 + add %r11,%rbp +#endif + 1: movl (%rbp),%ebp .section __ex_table,"a" .quad 1b,ia32_badarg .previous - GET_THREAD_INFO(%r10) - orl $TS_COMPAT,TI_status(%r10) - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) + GET_THREAD_INFO(%r11) + orl $TS_COMPAT,TI_status(%r11) + testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) CFI_REMEMBER_STATE jnz sysenter_tracesys cmpq $(IA32_NR_syscalls-1),%rax @@ -166,13 +207,15 @@ sysenter_do_call: sysenter_dispatch: call *ia32_sys_call_table(,%rax,8) movq %rax,RAX-ARGOFFSET(%rsp) - GET_THREAD_INFO(%r10) + GET_THREAD_INFO(%r11) DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF - testl $_TIF_ALLWORK_MASK,TI_flags(%r10) + testl $_TIF_ALLWORK_MASK,TI_flags(%r11) jnz sysexit_audit sysexit_from_sys_call: - andl $~TS_COMPAT,TI_status(%r10) + pax_exit_kernel_user + pax_erase_kstack + andl $~TS_COMPAT,TI_status(%r11) /* clear IF, that popfq doesn't enable interrupts early */ andl $~0x200,EFLAGS-R11(%rsp) movl RIP-R11(%rsp),%edx /* User %eip */ @@ -200,6 +243,9 @@ sysexit_from_sys_call: movl %eax,%esi /* 2nd arg: syscall number */ movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */ call audit_syscall_entry + + pax_erase_kstack + movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */ cmpq $(IA32_NR_syscalls-1),%rax ja ia32_badsys @@ -211,7 +257,7 @@ sysexit_from_sys_call: .endm .macro auditsys_exit exit - testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10) + testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) jnz ia32_ret_from_sys_call TRACE_IRQS_ON sti @@ -221,12 +267,12 @@ sysexit_from_sys_call: movzbl %al,%edi /* zero-extend that into %edi */ inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */ call audit_syscall_exit - GET_THREAD_INFO(%r10) + GET_THREAD_INFO(%r11) movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall return value */ movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi cli TRACE_IRQS_OFF - testl %edi,TI_flags(%r10) + testl %edi,TI_flags(%r11) jz \exit CLEAR_RREGS -ARGOFFSET jmp int_with_check @@ -244,7 +290,7 @@ sysexit_audit: sysenter_tracesys: #ifdef CONFIG_AUDITSYSCALL - testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10) + testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) jz sysenter_auditsys #endif SAVE_REST @@ -256,6 +302,9 @@ sysenter_tracesys: RESTORE_REST cmpq $(IA32_NR_syscalls-1),%rax ja int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */ + + pax_erase_kstack + jmp sysenter_do_call CFI_ENDPROC ENDPROC(ia32_sysenter_target) @@ -283,19 +332,25 @@ ENDPROC(ia32_sysenter_target) ENTRY(ia32_cstar_target) CFI_STARTPROC32 simple CFI_SIGNAL_FRAME - CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET + CFI_DEF_CFA rsp,0 CFI_REGISTER rip,rcx /*CFI_REGISTER rflags,r11*/ SWAPGS_UNSAFE_STACK movl %esp,%r8d CFI_REGISTER rsp,r8 movq PER_CPU_VAR(kernel_stack),%rsp + SAVE_ARGS 8*6,1,1 + pax_enter_kernel_user + +#ifdef CONFIG_PAX_RANDKSTACK + pax_erase_kstack +#endif + /* * No need to follow this irqs on/off section: the syscall * disabled irqs and here we enable it straight after entry: */ ENABLE_INTERRUPTS(CLBR_NONE) - SAVE_ARGS 8,1,1 movl %eax,%eax /* zero extension */ movq %rax,ORIG_RAX-ARGOFFSET(%rsp) movq %rcx,RIP-ARGOFFSET(%rsp) @@ -311,13 +366,19 @@ ENTRY(ia32_cstar_target) /* no need to do an access_ok check here because r8 has been 32bit zero extended */ /* hardware stack frame is complete now */ + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%r11 + add %r11,%r8 +#endif + 1: movl (%r8),%r9d .section __ex_table,"a" .quad 1b,ia32_badarg .previous - GET_THREAD_INFO(%r10) - orl $TS_COMPAT,TI_status(%r10) - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) + GET_THREAD_INFO(%r11) + orl $TS_COMPAT,TI_status(%r11) + testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) CFI_REMEMBER_STATE jnz cstar_tracesys cmpq $IA32_NR_syscalls-1,%rax @@ -327,13 +388,15 @@ cstar_do_call: cstar_dispatch: call *ia32_sys_call_table(,%rax,8) movq %rax,RAX-ARGOFFSET(%rsp) - GET_THREAD_INFO(%r10) + GET_THREAD_INFO(%r11) DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF - testl $_TIF_ALLWORK_MASK,TI_flags(%r10) + testl $_TIF_ALLWORK_MASK,TI_flags(%r11) jnz sysretl_audit sysretl_from_sys_call: - andl $~TS_COMPAT,TI_status(%r10) + pax_exit_kernel_user + pax_erase_kstack + andl $~TS_COMPAT,TI_status(%r11) RESTORE_ARGS 1,-ARG_SKIP,1,1,1 movl RIP-ARGOFFSET(%rsp),%ecx CFI_REGISTER rip,rcx @@ -361,7 +424,7 @@ sysretl_audit: cstar_tracesys: #ifdef CONFIG_AUDITSYSCALL - testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10) + testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11) jz cstar_auditsys #endif xchgl %r9d,%ebp @@ -375,6 +438,9 @@ cstar_tracesys: xchgl %ebp,%r9d cmpq $(IA32_NR_syscalls-1),%rax ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */ + + pax_erase_kstack + jmp cstar_do_call END(ia32_cstar_target) @@ -415,11 +481,6 @@ ENTRY(ia32_syscall) CFI_REL_OFFSET rip,RIP-RIP PARAVIRT_ADJUST_EXCEPTION_FRAME SWAPGS - /* - * No need to follow this irqs on/off section: the syscall - * disabled irqs and here we enable it straight after entry: - */ - ENABLE_INTERRUPTS(CLBR_NONE) movl %eax,%eax pushq %rax CFI_ADJUST_CFA_OFFSET 8 @@ -427,9 +488,20 @@ ENTRY(ia32_syscall) /* note the registers are not zero extended to the sf. this could be a problem. */ SAVE_ARGS 0,0,1 - GET_THREAD_INFO(%r10) - orl $TS_COMPAT,TI_status(%r10) - testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) + pax_enter_kernel_user + +#ifdef CONFIG_PAX_RANDKSTACK + pax_erase_kstack +#endif + + /* + * No need to follow this irqs on/off section: the syscall + * disabled irqs and here we enable it straight after entry: + */ + ENABLE_INTERRUPTS(CLBR_NONE) + GET_THREAD_INFO(%r11) + orl $TS_COMPAT,TI_status(%r11) + testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11) jnz ia32_tracesys cmpq $(IA32_NR_syscalls-1),%rax ja ia32_badsys @@ -452,6 +524,9 @@ ia32_tracesys: RESTORE_REST cmpq $(IA32_NR_syscalls-1),%rax ja int_ret_from_sys_call /* ia32_tracesys has set RAX(%rsp) */ + + pax_erase_kstack + jmp ia32_do_call END(ia32_syscall) @@ -462,6 +537,7 @@ ia32_badsys: quiet_ni_syscall: movq $-ENOSYS,%rax + pax_force_retaddr ret CFI_ENDPROC diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/ia32/ia32_signal.c linux-2.6.32.59-pax/arch/x86/ia32/ia32_signal.c --- linux-2.6.32.59/arch/x86/ia32/ia32_signal.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/ia32/ia32_signal.c 2012-03-13 13:15:34.432098027 +0100 @@ -167,7 +167,7 @@ asmlinkage long sys32_sigaltstack(const } seg = get_fs(); set_fs(KERNEL_DS); - ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->sp); + ret = do_sigaltstack(uss_ptr ? (const stack_t __force_user *)&uss : NULL, (stack_t __force_user *)&uoss, regs->sp); set_fs(seg); if (ret >= 0 && uoss_ptr) { if (!access_ok(VERIFY_WRITE, uoss_ptr, sizeof(stack_ia32_t))) @@ -374,7 +374,7 @@ static int ia32_setup_sigcontext(struct */ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size, - void **fpstate) + void __user **fpstate) { unsigned long sp; @@ -395,7 +395,7 @@ static void __user *get_sigframe(struct if (used_math()) { sp = sp - sig_xstate_ia32_size; - *fpstate = (struct _fpstate_ia32 *) sp; + *fpstate = (struct _fpstate_ia32 __user *) sp; if (save_i387_xstate_ia32(*fpstate) < 0) return (void __user *) -1L; } @@ -403,7 +403,7 @@ static void __user *get_sigframe(struct sp -= frame_size; /* Align the stack pointer according to the i386 ABI, * i.e. so that on function entry ((sp + 4) & 15) == 0. */ - sp = ((sp + 4) & -16ul) - 4; + sp = ((sp - 12) & -16ul) - 4; return (void __user *) sp; } @@ -461,7 +461,7 @@ int ia32_setup_frame(int sig, struct k_s * These are actually not used anymore, but left because some * gdb versions depend on them as a marker. */ - put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); + put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode); } put_user_catch(err); if (err) @@ -503,7 +503,7 @@ int ia32_setup_rt_frame(int sig, struct 0xb8, __NR_ia32_rt_sigreturn, 0x80cd, - 0, + 0 }; frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); @@ -533,16 +533,18 @@ int ia32_setup_rt_frame(int sig, struct if (ka->sa.sa_flags & SA_RESTORER) restorer = ka->sa.sa_restorer; + else if (current->mm->context.vdso) + /* Return stub is in 32bit vsyscall page */ + restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); else - restorer = VDSO32_SYMBOL(current->mm->context.vdso, - rt_sigreturn); + restorer = &frame->retcode; put_user_ex(ptr_to_compat(restorer), &frame->pretcode); /* * Not actually used anymore, but left because some gdb * versions need it. */ - put_user_ex(*((u64 *)&code), (u64 *)frame->retcode); + put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode); } put_user_catch(err); if (err) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/ia32/sys_ia32.c linux-2.6.32.59-pax/arch/x86/ia32/sys_ia32.c --- linux-2.6.32.59/arch/x86/ia32/sys_ia32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/ia32/sys_ia32.c 2012-03-13 13:15:34.432098027 +0100 @@ -69,8 +69,8 @@ asmlinkage long sys32_ftruncate64(unsign */ static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) { - typeof(ubuf->st_uid) uid = 0; - typeof(ubuf->st_gid) gid = 0; + typeof(((struct stat64 *)0)->st_uid) uid = 0; + typeof(((struct stat64 *)0)->st_gid) gid = 0; SET_UID(uid, stat->uid); SET_GID(gid, stat->gid); if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || @@ -308,8 +308,8 @@ asmlinkage long sys32_rt_sigprocmask(int } set_fs(KERNEL_DS); ret = sys_rt_sigprocmask(how, - set ? (sigset_t __user *)&s : NULL, - oset ? (sigset_t __user *)&s : NULL, + set ? (sigset_t __force_user *)&s : NULL, + oset ? (sigset_t __force_user *)&s : NULL, sigsetsize); set_fs(old_fs); if (ret) @@ -371,7 +371,7 @@ asmlinkage long sys32_sched_rr_get_inter mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); - ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); + ret = sys_sched_rr_get_interval(pid, (struct timespec __force_user *)&t); set_fs(old_fs); if (put_compat_timespec(&t, interval)) return -EFAULT; @@ -387,7 +387,7 @@ asmlinkage long sys32_rt_sigpending(comp mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); - ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); + ret = sys_rt_sigpending((sigset_t __force_user *)&s, sigsetsize); set_fs(old_fs); if (!ret) { switch (_NSIG_WORDS) { @@ -412,7 +412,7 @@ asmlinkage long sys32_rt_sigqueueinfo(in if (copy_siginfo_from_user32(&info, uinfo)) return -EFAULT; set_fs(KERNEL_DS); - ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); + ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force_user *)&info); set_fs(old_fs); return ret; } @@ -513,7 +513,7 @@ asmlinkage long sys32_sendfile(int out_f return -EFAULT; set_fs(KERNEL_DS); - ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, + ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __force_user *)&of : NULL, count); set_fs(old_fs); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/alternative-asm.h linux-2.6.32.59-pax/arch/x86/include/asm/alternative-asm.h --- linux-2.6.32.59/arch/x86/include/asm/alternative-asm.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/alternative-asm.h 2012-03-13 13:15:34.436098027 +0100 @@ -8,10 +8,10 @@ #ifdef CONFIG_SMP .macro LOCK_PREFIX -1: lock +672: lock .section .smp_locks,"a" .align 4 - X86_ALIGN 1b + X86_ALIGN 672b .previous .endm #else @@ -19,4 +19,43 @@ .endm #endif +#ifdef KERNEXEC_PLUGIN + .macro pax_force_retaddr_bts rip=0 + btsq $63,\rip(%rsp) + .endm +#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS + .macro pax_force_retaddr rip=0, reload=0 + btsq $63,\rip(%rsp) + .endm + .macro pax_force_fptr ptr + btsq $63,\ptr + .endm + .macro pax_set_fptr_mask + .endm +#endif +#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR + .macro pax_force_retaddr rip=0, reload=0 + .if \reload + pax_set_fptr_mask + .endif + orq %r10,\rip(%rsp) + .endm + .macro pax_force_fptr ptr + orq %r10,\ptr + .endm + .macro pax_set_fptr_mask + movabs $0x8000000000000000,%r10 + .endm +#endif +#else + .macro pax_force_retaddr rip=0, reload=0 + .endm + .macro pax_force_fptr ptr + .endm + .macro pax_force_retaddr_bts rip=0 + .endm + .macro pax_set_fptr_mask + .endm +#endif + #endif /* __ASSEMBLY__ */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/alternative.h linux-2.6.32.59-pax/arch/x86/include/asm/alternative.h --- linux-2.6.32.59/arch/x86/include/asm/alternative.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/alternative.h 2012-03-13 13:15:34.440098027 +0100 @@ -85,7 +85,7 @@ static inline void alternatives_smp_swit " .byte 662b-661b\n" /* sourcelen */ \ " .byte 664f-663f\n" /* replacementlen */ \ ".previous\n" \ - ".section .altinstr_replacement, \"ax\"\n" \ + ".section .altinstr_replacement, \"a\"\n" \ "663:\n\t" newinstr "\n664:\n" /* replacement */ \ ".previous" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/apic.h linux-2.6.32.59-pax/arch/x86/include/asm/apic.h --- linux-2.6.32.59/arch/x86/include/asm/apic.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/apic.h 2012-03-13 13:15:34.444098027 +0100 @@ -46,7 +46,7 @@ static inline void generic_apic_probe(vo #ifdef CONFIG_X86_LOCAL_APIC -extern unsigned int apic_verbosity; +extern int apic_verbosity; extern int local_apic_timer_c2_ok; extern int disable_apic; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/apm.h linux-2.6.32.59-pax/arch/x86/include/asm/apm.h --- linux-2.6.32.59/arch/x86/include/asm/apm.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/apm.h 2012-03-13 13:15:34.444098027 +0100 @@ -34,7 +34,7 @@ static inline void apm_bios_call_asm(u32 __asm__ __volatile__(APM_DO_ZERO_SEGS "pushl %%edi\n\t" "pushl %%ebp\n\t" - "lcall *%%cs:apm_bios_entry\n\t" + "lcall *%%ss:apm_bios_entry\n\t" "setc %%al\n\t" "popl %%ebp\n\t" "popl %%edi\n\t" @@ -58,7 +58,7 @@ static inline u8 apm_bios_call_simple_as __asm__ __volatile__(APM_DO_ZERO_SEGS "pushl %%edi\n\t" "pushl %%ebp\n\t" - "lcall *%%cs:apm_bios_entry\n\t" + "lcall *%%ss:apm_bios_entry\n\t" "setc %%bl\n\t" "popl %%ebp\n\t" "popl %%edi\n\t" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/atomic_32.h linux-2.6.32.59-pax/arch/x86/include/asm/atomic_32.h --- linux-2.6.32.59/arch/x86/include/asm/atomic_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/atomic_32.h 2012-07-21 11:14:49.133048492 +0200 @@ -25,6 +25,17 @@ static inline int atomic_read(const atom } /** + * atomic_read_unchecked - read atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically reads the value of @v. + */ +static inline int atomic_read_unchecked(const atomic_unchecked_t *v) +{ + return v->counter; +} + +/** * atomic_set - set atomic variable * @v: pointer of type atomic_t * @i: required value @@ -37,6 +48,18 @@ static inline void atomic_set(atomic_t * } /** + * atomic_set_unchecked - set atomic variable + * @v: pointer of type atomic_unchecked_t + * @i: required value + * + * Atomically sets the value of @v to @i. + */ +static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) +{ + v->counter = i; +} + +/** * atomic_add - add integer to atomic variable * @i: integer value to add * @v: pointer of type atomic_t @@ -45,7 +68,29 @@ static inline void atomic_set(atomic_t * */ static inline void atomic_add(int i, atomic_t *v) { - asm volatile(LOCK_PREFIX "addl %1,%0" + asm volatile(LOCK_PREFIX "addl %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter) + : "ir" (i)); +} + +/** + * atomic_add_unchecked - add integer to atomic variable + * @i: integer value to add + * @v: pointer of type atomic_unchecked_t + * + * Atomically adds @i to @v. + */ +static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "addl %1,%0\n" : "+m" (v->counter) : "ir" (i)); } @@ -59,7 +104,29 @@ static inline void atomic_add(int i, ato */ static inline void atomic_sub(int i, atomic_t *v) { - asm volatile(LOCK_PREFIX "subl %1,%0" + asm volatile(LOCK_PREFIX "subl %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addl %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter) + : "ir" (i)); +} + +/** + * atomic_sub_unchecked - subtract integer from atomic variable + * @i: integer value to subtract + * @v: pointer of type atomic_unchecked_t + * + * Atomically subtracts @i from @v. + */ +static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "subl %1,%0\n" : "+m" (v->counter) : "ir" (i)); } @@ -77,7 +144,16 @@ static inline int atomic_sub_and_test(in { unsigned char c; - asm volatile(LOCK_PREFIX "subl %2,%0; sete %1" + asm volatile(LOCK_PREFIX "subl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (v->counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -91,7 +167,27 @@ static inline int atomic_sub_and_test(in */ static inline void atomic_inc(atomic_t *v) { - asm volatile(LOCK_PREFIX "incl %0" + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter)); +} + +/** + * atomic_inc_unchecked - increment atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically increments @v by 1. + */ +static inline void atomic_inc_unchecked(atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "incl %0\n" : "+m" (v->counter)); } @@ -103,7 +199,27 @@ static inline void atomic_inc(atomic_t * */ static inline void atomic_dec(atomic_t *v) { - asm volatile(LOCK_PREFIX "decl %0" + asm volatile(LOCK_PREFIX "decl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+m" (v->counter)); +} + +/** + * atomic_dec_unchecked - decrement atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically decrements @v by 1. + */ +static inline void atomic_dec_unchecked(atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "decl %0\n" : "+m" (v->counter)); } @@ -119,7 +235,16 @@ static inline int atomic_dec_and_test(at { unsigned char c; - asm volatile(LOCK_PREFIX "decl %0; sete %1" + asm volatile(LOCK_PREFIX "decl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (v->counter), "=qm" (c) : : "memory"); return c != 0; @@ -137,7 +262,35 @@ static inline int atomic_inc_and_test(at { unsigned char c; - asm volatile(LOCK_PREFIX "incl %0; sete %1" + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "into\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" + : "+m" (v->counter), "=qm" (c) + : : "memory"); + return c != 0; +} + +/** + * atomic_inc_and_test_unchecked - increment and test + * @v: pointer of type atomic_unchecked_t + * + * Atomically increments @v by 1 + * and returns true if the result is zero, or false for all + * other cases. + */ +static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) +{ + unsigned char c; + + asm volatile(LOCK_PREFIX "incl %0\n" + "sete %1\n" : "+m" (v->counter), "=qm" (c) : : "memory"); return c != 0; @@ -156,7 +309,16 @@ static inline int atomic_add_negative(in { unsigned char c; - asm volatile(LOCK_PREFIX "addl %2,%0; sets %1" + asm volatile(LOCK_PREFIX "addl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sets %1\n" : "+m" (v->counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -179,7 +341,15 @@ static inline int atomic_add_return(int #endif /* Modern 486+ processor */ __i = i; - asm volatile(LOCK_PREFIX "xaddl %0, %1" + asm volatile(LOCK_PREFIX "xaddl %0, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "movl %0, %1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+r" (i), "+m" (v->counter) : : "memory"); return i + __i; @@ -195,6 +365,38 @@ no_xadd: /* Legacy 386 processor */ } /** + * atomic_add_return_unchecked - add integer and return + * @v: pointer of type atomic_unchecked_t + * @i: integer value to add + * + * Atomically adds @i to @v and returns @i + @v + */ +static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) +{ + int __i; +#ifdef CONFIG_M386 + unsigned long flags; + if (unlikely(boot_cpu_data.x86 <= 3)) + goto no_xadd; +#endif + /* Modern 486+ processor */ + __i = i; + asm volatile(LOCK_PREFIX "xaddl %0, %1" + : "+r" (i), "+m" (v->counter) + : : "memory"); + return i + __i; + +#ifdef CONFIG_M386 +no_xadd: /* Legacy 386 processor */ + local_irq_save(flags); + __i = atomic_read_unchecked(v); + atomic_set_unchecked(v, i + __i); + local_irq_restore(flags); + return i + __i; +#endif +} + +/** * atomic_sub_return - subtract integer and return * @v: pointer of type atomic_t * @i: integer value to subtract @@ -211,11 +413,21 @@ static inline int atomic_cmpxchg(atomic_ return cmpxchg(&v->counter, old, new); } +static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) +{ + return cmpxchg(&v->counter, old, new); +} + static inline int atomic_xchg(atomic_t *v, int new) { return xchg(&v->counter, new); } +static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new) +{ + return xchg(&v->counter, new); +} + /** * atomic_add_unless - add unless the number is already a given value * @v: pointer of type atomic_t @@ -227,32 +439,73 @@ static inline int atomic_xchg(atomic_t * */ static inline int atomic_add_unless(atomic_t *v, int a, int u) { - int c, old; + int c, old, new; c = atomic_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic_cmpxchg((v), c, c + (a)); + + asm volatile("addl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "subl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=r" (new) + : "0" (c), "ir" (a)); + + old = atomic_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) #define atomic_inc_return(v) (atomic_add_return(1, v)) +static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) +{ + return atomic_add_return_unchecked(1, v); +} #define atomic_dec_return(v) (atomic_sub_return(1, v)) /* These are x86-specific, used by some header files */ -#define atomic_clear_mask(mask, addr) \ - asm volatile(LOCK_PREFIX "andl %0,%1" \ - : : "r" (~(mask)), "m" (*(addr)) : "memory") - -#define atomic_set_mask(mask, addr) \ - asm volatile(LOCK_PREFIX "orl %0,%1" \ - : : "r" (mask), "m" (*(addr)) : "memory") +static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +{ + asm volatile(LOCK_PREFIX "andl %1,%0" + : "+m" (v->counter) + : "r" (~(mask)) + : "memory"); +} + +static inline void atomic_clear_mask_unchecked(unsigned int mask, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "andl %1,%0" + : "+m" (v->counter) + : "r" (~(mask)) + : "memory"); +} + +static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +{ + asm volatile(LOCK_PREFIX "orl %1,%0" + : "+m" (v->counter) + : "r" (mask) + : "memory"); +} + +static inline void atomic_set_mask_unchecked(unsigned int mask, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "orl %1,%0" + : "+m" (v->counter) + : "r" (mask) + : "memory"); +} /* Atomic operations are already serializing on x86 */ #define smp_mb__before_atomic_dec() barrier() @@ -266,9 +519,18 @@ typedef struct { u64 __aligned(8) counter; } atomic64_t; +#ifdef CONFIG_PAX_REFCOUNT +typedef struct { + u64 __aligned(8) counter; +} atomic64_unchecked_t; +#else +typedef atomic64_t atomic64_unchecked_t; +#endif + #define ATOMIC64_INIT(val) { (val) } extern u64 atomic64_cmpxchg(atomic64_t *ptr, u64 old_val, u64 new_val); +extern u64 atomic64_cmpxchg_unchecked(atomic64_unchecked_t *ptr, u64 old_val, u64 new_val); /** * atomic64_xchg - xchg atomic64 variable @@ -279,6 +541,7 @@ extern u64 atomic64_cmpxchg(atomic64_t * * the old value. */ extern u64 atomic64_xchg(atomic64_t *ptr, u64 new_val); +extern u64 atomic64_xchg_unchecked(atomic64_unchecked_t *ptr, u64 new_val); /** * atomic64_set - set atomic64 variable @@ -290,6 +553,15 @@ extern u64 atomic64_xchg(atomic64_t *ptr extern void atomic64_set(atomic64_t *ptr, u64 new_val); /** + * atomic64_unchecked_set - set atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * @new_val: value to assign + * + * Atomically sets the value of @ptr to @new_val. + */ +extern void atomic64_set_unchecked(atomic64_unchecked_t *ptr, u64 new_val); + +/** * atomic64_read - read atomic64 variable * @ptr: pointer to type atomic64_t * @@ -317,7 +589,33 @@ static inline u64 atomic64_read(atomic64 return res; } -extern u64 atomic64_read(atomic64_t *ptr); +/** + * atomic64_read_unchecked - read atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically reads the value of @ptr and returns it. + */ +static inline u64 atomic64_read_unchecked(atomic64_unchecked_t *ptr) +{ + u64 res; + + /* + * Note, we inline this atomic64_unchecked_t primitive because + * it only clobbers EAX/EDX and leaves the others + * untouched. We also (somewhat subtly) rely on the + * fact that cmpxchg8b returns the current 64-bit value + * of the memory location we are touching: + */ + asm volatile( + "mov %%ebx, %%eax\n\t" + "mov %%ecx, %%edx\n\t" + LOCK_PREFIX "cmpxchg8b %1\n" + : "=&A" (res) + : "m" (*ptr) + ); + + return res; +} /** * atomic64_add_return - add and return @@ -332,8 +630,11 @@ extern u64 atomic64_add_return(u64 delta * Other variants with different arithmetic operators: */ extern u64 atomic64_sub_return(u64 delta, atomic64_t *ptr); +extern u64 atomic64_sub_return_unchecked(u64 delta, atomic64_unchecked_t *ptr); extern u64 atomic64_inc_return(atomic64_t *ptr); +extern u64 atomic64_inc_return_unchecked(atomic64_unchecked_t *ptr); extern u64 atomic64_dec_return(atomic64_t *ptr); +extern u64 atomic64_dec_return_unchecked(atomic64_unchecked_t *ptr); /** * atomic64_add - add integer to atomic64 variable @@ -345,6 +646,15 @@ extern u64 atomic64_dec_return(atomic64_ extern void atomic64_add(u64 delta, atomic64_t *ptr); /** + * atomic64_add_unchecked - add integer to atomic64 variable + * @delta: integer value to add + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically adds @delta to @ptr. + */ +extern void atomic64_add_unchecked(u64 delta, atomic64_unchecked_t *ptr); + +/** * atomic64_sub - subtract the atomic64 variable * @delta: integer value to subtract * @ptr: pointer to type atomic64_t @@ -354,6 +664,15 @@ extern void atomic64_add(u64 delta, atom extern void atomic64_sub(u64 delta, atomic64_t *ptr); /** + * atomic64_sub_unchecked - subtract the atomic64 variable + * @delta: integer value to subtract + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically subtracts @delta from @ptr. + */ +extern void atomic64_sub_unchecked(u64 delta, atomic64_unchecked_t *ptr); + +/** * atomic64_sub_and_test - subtract value from variable and test result * @delta: integer value to subtract * @ptr: pointer to type atomic64_t @@ -373,6 +692,14 @@ extern int atomic64_sub_and_test(u64 del extern void atomic64_inc(atomic64_t *ptr); /** + * atomic64_inc_unchecked - increment atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically increments @ptr by 1. + */ +extern void atomic64_inc_unchecked(atomic64_unchecked_t *ptr); + +/** * atomic64_dec - decrement atomic64 variable * @ptr: pointer to type atomic64_t * @@ -381,6 +708,14 @@ extern void atomic64_inc(atomic64_t *ptr extern void atomic64_dec(atomic64_t *ptr); /** + * atomic64_dec_unchecked - decrement atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically decrements @ptr by 1. + */ +extern void atomic64_dec_unchecked(atomic64_unchecked_t *ptr); + +/** * atomic64_dec_and_test - decrement and test * @ptr: pointer to type atomic64_t * diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/atomic_64.h linux-2.6.32.59-pax/arch/x86/include/asm/atomic_64.h --- linux-2.6.32.59/arch/x86/include/asm/atomic_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/atomic_64.h 2012-07-21 11:13:51.201047022 +0200 @@ -24,6 +24,17 @@ static inline int atomic_read(const atom } /** + * atomic_read_unchecked - read atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically reads the value of @v. + */ +static inline int atomic_read_unchecked(const atomic_unchecked_t *v) +{ + return v->counter; +} + +/** * atomic_set - set atomic variable * @v: pointer of type atomic_t * @i: required value @@ -36,6 +47,18 @@ static inline void atomic_set(atomic_t * } /** + * atomic_set_unchecked - set atomic variable + * @v: pointer of type atomic_unchecked_t + * @i: required value + * + * Atomically sets the value of @v to @i. + */ +static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i) +{ + v->counter = i; +} + +/** * atomic_add - add integer to atomic variable * @i: integer value to add * @v: pointer of type atomic_t @@ -44,7 +67,29 @@ static inline void atomic_set(atomic_t * */ static inline void atomic_add(int i, atomic_t *v) { - asm volatile(LOCK_PREFIX "addl %1,%0" + asm volatile(LOCK_PREFIX "addl %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "ir" (i), "m" (v->counter)); +} + +/** + * atomic_add_unchecked - add integer to atomic variable + * @i: integer value to add + * @v: pointer of type atomic_unchecked_t + * + * Atomically adds @i to @v. + */ +static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "addl %1,%0\n" : "=m" (v->counter) : "ir" (i), "m" (v->counter)); } @@ -58,7 +103,29 @@ static inline void atomic_add(int i, ato */ static inline void atomic_sub(int i, atomic_t *v) { - asm volatile(LOCK_PREFIX "subl %1,%0" + asm volatile(LOCK_PREFIX "subl %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addl %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "ir" (i), "m" (v->counter)); +} + +/** + * atomic_sub_unchecked - subtract the atomic variable + * @i: integer value to subtract + * @v: pointer of type atomic_unchecked_t + * + * Atomically subtracts @i from @v. + */ +static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "subl %1,%0\n" : "=m" (v->counter) : "ir" (i), "m" (v->counter)); } @@ -76,7 +143,16 @@ static inline int atomic_sub_and_test(in { unsigned char c; - asm volatile(LOCK_PREFIX "subl %2,%0; sete %1" + asm volatile(LOCK_PREFIX "subl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "ir" (i), "m" (v->counter) : "memory"); return c; @@ -90,7 +166,28 @@ static inline int atomic_sub_and_test(in */ static inline void atomic_inc(atomic_t *v) { - asm volatile(LOCK_PREFIX "incl %0" + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "m" (v->counter)); +} + +/** + * atomic_inc_unchecked - increment atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically increments @v by 1. + */ +static inline void atomic_inc_unchecked(atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "incl %0\n" : "=m" (v->counter) : "m" (v->counter)); } @@ -103,7 +200,28 @@ static inline void atomic_inc(atomic_t * */ static inline void atomic_dec(atomic_t *v) { - asm volatile(LOCK_PREFIX "decl %0" + asm volatile(LOCK_PREFIX "decl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "m" (v->counter)); +} + +/** + * atomic_dec_unchecked - decrement atomic variable + * @v: pointer of type atomic_unchecked_t + * + * Atomically decrements @v by 1. + */ +static inline void atomic_dec_unchecked(atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "decl %0\n" : "=m" (v->counter) : "m" (v->counter)); } @@ -120,7 +238,16 @@ static inline int atomic_dec_and_test(at { unsigned char c; - asm volatile(LOCK_PREFIX "decl %0; sete %1" + asm volatile(LOCK_PREFIX "decl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "m" (v->counter) : "memory"); return c != 0; @@ -138,7 +265,35 @@ static inline int atomic_inc_and_test(at { unsigned char c; - asm volatile(LOCK_PREFIX "incl %0; sete %1" + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" + : "=m" (v->counter), "=qm" (c) + : "m" (v->counter) : "memory"); + return c != 0; +} + +/** + * atomic_inc_and_test_unchecked - increment and test + * @v: pointer of type atomic_unchecked_t + * + * Atomically increments @v by 1 + * and returns true if the result is zero, or false for all + * other cases. + */ +static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v) +{ + unsigned char c; + + asm volatile(LOCK_PREFIX "incl %0\n" + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "m" (v->counter) : "memory"); return c != 0; @@ -157,7 +312,16 @@ static inline int atomic_add_negative(in { unsigned char c; - asm volatile(LOCK_PREFIX "addl %2,%0; sets %1" + asm volatile(LOCK_PREFIX "addl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sets %1\n" : "=m" (v->counter), "=qm" (c) : "ir" (i), "m" (v->counter) : "memory"); return c; @@ -173,7 +337,31 @@ static inline int atomic_add_negative(in static inline int atomic_add_return(int i, atomic_t *v) { int __i = i; - asm volatile(LOCK_PREFIX "xaddl %0, %1" + asm volatile(LOCK_PREFIX "xaddl %0, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "movl %0, %1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+r" (i), "+m" (v->counter) + : : "memory"); + return i + __i; +} + +/** + * atomic_add_return_unchecked - add and return + * @i: integer value to add + * @v: pointer of type atomic_unchecked_t + * + * Atomically adds @i to @v and returns @i + @v + */ +static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v) +{ + int __i = i; + asm volatile(LOCK_PREFIX "xaddl %0, %1\n" : "+r" (i), "+m" (v->counter) : : "memory"); return i + __i; @@ -185,6 +373,10 @@ static inline int atomic_sub_return(int } #define atomic_inc_return(v) (atomic_add_return(1, v)) +static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v) +{ + return atomic_add_return_unchecked(1, v); +} #define atomic_dec_return(v) (atomic_sub_return(1, v)) /* The 64-bit atomic type */ @@ -204,6 +396,18 @@ static inline long atomic64_read(const a } /** + * atomic64_read_unchecked - read atomic64 variable + * @v: pointer of type atomic64_unchecked_t + * + * Atomically reads the value of @v. + * Doesn't imply a read memory barrier. + */ +static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v) +{ + return v->counter; +} + +/** * atomic64_set - set atomic64 variable * @v: pointer to type atomic64_t * @i: required value @@ -216,6 +420,18 @@ static inline void atomic64_set(atomic64 } /** + * atomic64_set_unchecked - set atomic64 variable + * @v: pointer to type atomic64_unchecked_t + * @i: required value + * + * Atomically sets the value of @v to @i. + */ +static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i) +{ + v->counter = i; +} + +/** * atomic64_add - add integer to atomic64 variable * @i: integer value to add * @v: pointer to type atomic64_t @@ -224,6 +440,28 @@ static inline void atomic64_set(atomic64 */ static inline void atomic64_add(long i, atomic64_t *v) { + asm volatile(LOCK_PREFIX "addq %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subq %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "er" (i), "m" (v->counter)); +} + +/** + * atomic64_add_unchecked - add integer to atomic64 variable + * @i: integer value to add + * @v: pointer to type atomic64_unchecked_t + * + * Atomically adds @i to @v. + */ +static inline void atomic64_add_unchecked(long i, atomic64_unchecked_t *v) +{ asm volatile(LOCK_PREFIX "addq %1,%0" : "=m" (v->counter) : "er" (i), "m" (v->counter)); @@ -238,7 +476,15 @@ static inline void atomic64_add(long i, */ static inline void atomic64_sub(long i, atomic64_t *v) { - asm volatile(LOCK_PREFIX "subq %1,%0" + asm volatile(LOCK_PREFIX "subq %1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addq %1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "=m" (v->counter) : "er" (i), "m" (v->counter)); } @@ -256,7 +502,16 @@ static inline int atomic64_sub_and_test( { unsigned char c; - asm volatile(LOCK_PREFIX "subq %2,%0; sete %1" + asm volatile(LOCK_PREFIX "subq %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "addq %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "er" (i), "m" (v->counter) : "memory"); return c; @@ -270,6 +525,27 @@ static inline int atomic64_sub_and_test( */ static inline void atomic64_inc(atomic64_t *v) { + asm volatile(LOCK_PREFIX "incq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "m" (v->counter)); +} + +/** + * atomic64_inc_unchecked - increment atomic64 variable + * @v: pointer to type atomic64_unchecked_t + * + * Atomically increments @v by 1. + */ +static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v) +{ asm volatile(LOCK_PREFIX "incq %0" : "=m" (v->counter) : "m" (v->counter)); @@ -283,7 +559,28 @@ static inline void atomic64_inc(atomic64 */ static inline void atomic64_dec(atomic64_t *v) { - asm volatile(LOCK_PREFIX "decq %0" + asm volatile(LOCK_PREFIX "decq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=m" (v->counter) + : "m" (v->counter)); +} + +/** + * atomic64_dec_unchecked - decrement atomic64 variable + * @v: pointer to type atomic64_t + * + * Atomically decrements @v by 1. + */ +static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "decq %0\n" : "=m" (v->counter) : "m" (v->counter)); } @@ -300,7 +597,16 @@ static inline int atomic64_dec_and_test( { unsigned char c; - asm volatile(LOCK_PREFIX "decq %0; sete %1" + asm volatile(LOCK_PREFIX "decq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "incq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "m" (v->counter) : "memory"); return c != 0; @@ -318,7 +624,16 @@ static inline int atomic64_inc_and_test( { unsigned char c; - asm volatile(LOCK_PREFIX "incq %0; sete %1" + asm volatile(LOCK_PREFIX "incq %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decq %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "=m" (v->counter), "=qm" (c) : "m" (v->counter) : "memory"); return c != 0; @@ -337,7 +652,16 @@ static inline int atomic64_add_negative( { unsigned char c; - asm volatile(LOCK_PREFIX "addq %2,%0; sets %1" + asm volatile(LOCK_PREFIX "addq %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subq %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sets %1\n" : "=m" (v->counter), "=qm" (c) : "er" (i), "m" (v->counter) : "memory"); return c; @@ -353,7 +677,31 @@ static inline int atomic64_add_negative( static inline long atomic64_add_return(long i, atomic64_t *v) { long __i = i; - asm volatile(LOCK_PREFIX "xaddq %0, %1;" + asm volatile(LOCK_PREFIX "xaddq %0, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "movq %0, %1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "+r" (i), "+m" (v->counter) + : : "memory"); + return i + __i; +} + +/** + * atomic64_add_return_unchecked - add and return + * @i: integer value to add + * @v: pointer to type atomic64_unchecked_t + * + * Atomically adds @i to @v and returns @i + @v + */ +static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v) +{ + long __i = i; + asm volatile(LOCK_PREFIX "xaddq %0, %1" : "+r" (i), "+m" (v->counter) : : "memory"); return i + __i; @@ -365,6 +713,10 @@ static inline long atomic64_sub_return(l } #define atomic64_inc_return(v) (atomic64_add_return(1, (v))) +static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v) +{ + return atomic64_add_return_unchecked(1, v); +} #define atomic64_dec_return(v) (atomic64_sub_return(1, (v))) static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new) @@ -372,21 +724,41 @@ static inline long atomic64_cmpxchg(atom return cmpxchg(&v->counter, old, new); } +static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old, long new) +{ + return cmpxchg(&v->counter, old, new); +} + static inline long atomic64_xchg(atomic64_t *v, long new) { return xchg(&v->counter, new); } +static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new) +{ + return xchg(&v->counter, new); +} + static inline long atomic_cmpxchg(atomic_t *v, int old, int new) { return cmpxchg(&v->counter, old, new); } +static inline long atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new) +{ + return cmpxchg(&v->counter, old, new); +} + static inline long atomic_xchg(atomic_t *v, int new) { return xchg(&v->counter, new); } +static inline long atomic_xchg_unchecked(atomic_unchecked_t *v, int new) +{ + return xchg(&v->counter, new); +} + /** * atomic_add_unless - add unless the number is a given value * @v: pointer of type atomic_t @@ -398,17 +770,30 @@ static inline long atomic_xchg(atomic_t */ static inline int atomic_add_unless(atomic_t *v, int a, int u) { - int c, old; + int c, old, new; c = atomic_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic_cmpxchg((v), c, c + (a)); + + asm volatile("addl %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "subl %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=r" (new) + : "0" (c), "ir" (a)); + + old = atomic_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) @@ -424,17 +809,30 @@ static inline int atomic_add_unless(atom */ static inline int atomic64_add_unless(atomic64_t *v, long a, long u) { - long c, old; + long c, old, new; c = atomic64_read(v); for (;;) { - if (unlikely(c == (u))) + if (unlikely(c == u)) break; - old = atomic64_cmpxchg((v), c, c + (a)); + + asm volatile("addq %2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "subq %2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + : "=r" (new) + : "0" (c), "er" (a)); + + old = atomic64_cmpxchg(v, c, new); if (likely(old == c)) break; c = old; } - return c != (u); + return c != u; } /** @@ -466,14 +864,37 @@ static inline void atomic_or_long(unsign #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) /* These are x86-specific, used by some header files */ -#define atomic_clear_mask(mask, addr) \ - asm volatile(LOCK_PREFIX "andl %0,%1" \ - : : "r" (~(mask)), "m" (*(addr)) : "memory") - -#define atomic_set_mask(mask, addr) \ - asm volatile(LOCK_PREFIX "orl %0,%1" \ - : : "r" ((unsigned)(mask)), "m" (*(addr)) \ - : "memory") +static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +{ + asm volatile(LOCK_PREFIX "andl %1,%0" + : "+m" (v->counter) + : "r" (~(mask)) + : "memory"); +} + +static inline void atomic_clear_mask_unchecked(unsigned int mask, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "andl %1,%0" + : "+m" (v->counter) + : "r" (~(mask)) + : "memory"); +} + +static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +{ + asm volatile(LOCK_PREFIX "orl %1,%0" + : "+m" (v->counter) + : "r" (mask) + : "memory"); +} + +static inline void atomic_set_mask_unchecked(unsigned int mask, atomic_unchecked_t *v) +{ + asm volatile(LOCK_PREFIX "orl %1,%0" + : "+m" (v->counter) + : "r" (mask) + : "memory"); +} /* Atomic operations are already serializing on x86 */ #define smp_mb__before_atomic_dec() barrier() diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/bitops.h linux-2.6.32.59-pax/arch/x86/include/asm/bitops.h --- linux-2.6.32.59/arch/x86/include/asm/bitops.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/bitops.h 2012-03-13 13:15:34.448098027 +0100 @@ -38,7 +38,7 @@ * a mask operation on a byte. */ #define IS_IMMEDIATE(nr) (__builtin_constant_p(nr)) -#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((void *)(addr) + ((nr)>>3)) +#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((volatile void *)(addr) + ((nr)>>3)) #define CONST_MASK(nr) (1 << ((nr) & 7)) /** diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/boot.h linux-2.6.32.59-pax/arch/x86/include/asm/boot.h --- linux-2.6.32.59/arch/x86/include/asm/boot.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/boot.h 2012-03-13 13:15:34.452098026 +0100 @@ -11,10 +11,15 @@ #include /* Physical address where kernel should be loaded. */ -#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ +#define ____LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ + (CONFIG_PHYSICAL_ALIGN - 1)) \ & ~(CONFIG_PHYSICAL_ALIGN - 1)) +#ifndef __ASSEMBLY__ +extern unsigned char __LOAD_PHYSICAL_ADDR[]; +#define LOAD_PHYSICAL_ADDR ((unsigned long)__LOAD_PHYSICAL_ADDR) +#endif + /* Minimum kernel alignment, as a power of two */ #ifdef CONFIG_X86_64 #define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/cacheflush.h linux-2.6.32.59-pax/arch/x86/include/asm/cacheflush.h --- linux-2.6.32.59/arch/x86/include/asm/cacheflush.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/cacheflush.h 2012-03-13 13:15:34.452098026 +0100 @@ -60,7 +60,7 @@ PAGEFLAG(WC, WC) static inline unsigned long get_page_memtype(struct page *pg) { if (!PageUncached(pg) && !PageWC(pg)) - return -1; + return ~0UL; else if (!PageUncached(pg) && PageWC(pg)) return _PAGE_CACHE_WC; else if (PageUncached(pg) && !PageWC(pg)) @@ -85,7 +85,7 @@ static inline void set_page_memtype(stru SetPageWC(pg); break; default: - case -1: + case ~0UL: ClearPageUncached(pg); ClearPageWC(pg); break; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/cache.h linux-2.6.32.59-pax/arch/x86/include/asm/cache.h --- linux-2.6.32.59/arch/x86/include/asm/cache.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/cache.h 2012-03-13 13:15:34.452098026 +0100 @@ -5,9 +5,10 @@ /* L1 cache line size */ #define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT) -#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) +#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) #define __read_mostly __attribute__((__section__(".data.read_mostly"))) +#define __read_only __attribute__((__section__(".data.read_only"))) #ifdef CONFIG_X86_VSMP /* vSMP Internode cacheline shift */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/calling.h linux-2.6.32.59-pax/arch/x86/include/asm/calling.h --- linux-2.6.32.59/arch/x86/include/asm/calling.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/calling.h 2012-03-13 13:15:34.452098026 +0100 @@ -52,32 +52,32 @@ For 32-bit we have the following convent * for assembly code: */ -#define R15 0 -#define R14 8 -#define R13 16 -#define R12 24 -#define RBP 32 -#define RBX 40 +#define R15 (0) +#define R14 (8) +#define R13 (16) +#define R12 (24) +#define RBP (32) +#define RBX (40) /* arguments: interrupts/non tracing syscalls only save up to here: */ -#define R11 48 -#define R10 56 -#define R9 64 -#define R8 72 -#define RAX 80 -#define RCX 88 -#define RDX 96 -#define RSI 104 -#define RDI 112 -#define ORIG_RAX 120 /* + error_code */ +#define R11 (48) +#define R10 (56) +#define R9 (64) +#define R8 (72) +#define RAX (80) +#define RCX (88) +#define RDX (96) +#define RSI (104) +#define RDI (112) +#define ORIG_RAX (120) /* + error_code */ /* end of arguments */ /* cpu exception frame or undefined in case of fast syscall: */ -#define RIP 128 -#define CS 136 -#define EFLAGS 144 -#define RSP 152 -#define SS 160 +#define RIP (128) +#define CS (136) +#define EFLAGS (144) +#define RSP (152) +#define SS (160) #define ARGOFFSET R11 #define SWFRAME ORIG_RAX diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/checksum_32.h linux-2.6.32.59-pax/arch/x86/include/asm/checksum_32.h --- linux-2.6.32.59/arch/x86/include/asm/checksum_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/checksum_32.h 2012-03-13 13:15:34.452098026 +0100 @@ -31,6 +31,14 @@ asmlinkage __wsum csum_partial_copy_gene int len, __wsum sum, int *src_err_ptr, int *dst_err_ptr); +asmlinkage __wsum csum_partial_copy_generic_to_user(const void *src, void *dst, + int len, __wsum sum, + int *src_err_ptr, int *dst_err_ptr); + +asmlinkage __wsum csum_partial_copy_generic_from_user(const void *src, void *dst, + int len, __wsum sum, + int *src_err_ptr, int *dst_err_ptr); + /* * Note: when you get a NULL pointer exception here this means someone * passed in an incorrect kernel address to one of these functions. @@ -50,7 +58,7 @@ static inline __wsum csum_partial_copy_f int *err_ptr) { might_sleep(); - return csum_partial_copy_generic((__force void *)src, dst, + return csum_partial_copy_generic_from_user((__force void *)src, dst, len, sum, err_ptr, NULL); } @@ -178,7 +186,7 @@ static inline __wsum csum_and_copy_to_us { might_sleep(); if (access_ok(VERIFY_WRITE, dst, len)) - return csum_partial_copy_generic(src, (__force void *)dst, + return csum_partial_copy_generic_to_user(src, (__force void *)dst, len, sum, NULL, err_ptr); if (len) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/desc_defs.h linux-2.6.32.59-pax/arch/x86/include/asm/desc_defs.h --- linux-2.6.32.59/arch/x86/include/asm/desc_defs.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/desc_defs.h 2012-03-13 13:15:34.456098026 +0100 @@ -31,6 +31,12 @@ struct desc_struct { unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1; unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8; }; + struct { + u16 offset_low; + u16 seg; + unsigned reserved: 8, type: 4, s: 1, dpl: 2, p: 1; + unsigned offset_high: 16; + } gate; }; } __attribute__((packed)); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/desc.h linux-2.6.32.59-pax/arch/x86/include/asm/desc.h --- linux-2.6.32.59/arch/x86/include/asm/desc.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/desc.h 2012-03-13 13:15:34.456098026 +0100 @@ -4,6 +4,7 @@ #include #include #include +#include #include static inline void fill_ldt(struct desc_struct *desc, @@ -15,6 +16,7 @@ static inline void fill_ldt(struct desc_ desc->base1 = (info->base_addr & 0x00ff0000) >> 16; desc->type = (info->read_exec_only ^ 1) << 1; desc->type |= info->contents << 2; + desc->type |= info->seg_not_present ^ 1; desc->s = 1; desc->dpl = 0x3; desc->p = info->seg_not_present ^ 1; @@ -31,16 +33,12 @@ static inline void fill_ldt(struct desc_ } extern struct desc_ptr idt_descr; -extern gate_desc idt_table[]; - -struct gdt_page { - struct desc_struct gdt[GDT_ENTRIES]; -} __attribute__((aligned(PAGE_SIZE))); -DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page); +extern gate_desc idt_table[256]; +extern struct desc_struct cpu_gdt_table[NR_CPUS][PAGE_SIZE / sizeof(struct desc_struct)]; static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu) { - return per_cpu(gdt_page, cpu).gdt; + return cpu_gdt_table[cpu]; } #ifdef CONFIG_X86_64 @@ -65,9 +63,14 @@ static inline void pack_gate(gate_desc * unsigned long base, unsigned dpl, unsigned flags, unsigned short seg) { - gate->a = (seg << 16) | (base & 0xffff); - gate->b = (base & 0xffff0000) | - (((0x80 | type | (dpl << 5)) & 0xff) << 8); + gate->gate.offset_low = base; + gate->gate.seg = seg; + gate->gate.reserved = 0; + gate->gate.type = type; + gate->gate.s = 0; + gate->gate.dpl = dpl; + gate->gate.p = 1; + gate->gate.offset_high = base >> 16; } #endif @@ -115,13 +118,17 @@ static inline void paravirt_free_ldt(str static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate) { + pax_open_kernel(); memcpy(&idt[entry], gate, sizeof(*gate)); + pax_close_kernel(); } static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc) { + pax_open_kernel(); memcpy(&ldt[entry], desc, 8); + pax_close_kernel(); } static inline void native_write_gdt_entry(struct desc_struct *gdt, int entry, @@ -139,7 +146,10 @@ static inline void native_write_gdt_entr size = sizeof(struct desc_struct); break; } + + pax_open_kernel(); memcpy(&gdt[entry], desc, size); + pax_close_kernel(); } static inline void pack_descriptor(struct desc_struct *desc, unsigned long base, @@ -211,7 +221,9 @@ static inline void native_set_ldt(const static inline void native_load_tr_desc(void) { + pax_open_kernel(); asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8)); + pax_close_kernel(); } static inline void native_load_gdt(const struct desc_ptr *dtr) @@ -246,8 +258,10 @@ static inline void native_load_tls(struc unsigned int i; struct desc_struct *gdt = get_cpu_gdt_table(cpu); + pax_open_kernel(); for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++) gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]; + pax_close_kernel(); } #define _LDT_empty(info) \ @@ -309,7 +323,7 @@ static inline void set_desc_limit(struct desc->limit = (limit >> 16) & 0xf; } -static inline void _set_gate(int gate, unsigned type, void *addr, +static inline void _set_gate(int gate, unsigned type, const void *addr, unsigned dpl, unsigned ist, unsigned seg) { gate_desc s; @@ -327,7 +341,7 @@ static inline void _set_gate(int gate, u * Pentium F0 0F bugfix can have resulted in the mapped * IDT being write-protected. */ -static inline void set_intr_gate(unsigned int n, void *addr) +static inline void set_intr_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS); @@ -356,19 +370,19 @@ static inline void alloc_intr_gate(unsig /* * This routine sets up an interrupt gate at directory privilege level 3. */ -static inline void set_system_intr_gate(unsigned int n, void *addr) +static inline void set_system_intr_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS); } -static inline void set_system_trap_gate(unsigned int n, void *addr) +static inline void set_system_trap_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS); } -static inline void set_trap_gate(unsigned int n, void *addr) +static inline void set_trap_gate(unsigned int n, const void *addr) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS); @@ -377,19 +391,31 @@ static inline void set_trap_gate(unsigne static inline void set_task_gate(unsigned int n, unsigned int gdt_entry) { BUG_ON((unsigned)n > 0xFF); - _set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3)); + _set_gate(n, GATE_TASK, (const void *)0, 0, 0, (gdt_entry<<3)); } -static inline void set_intr_gate_ist(int n, void *addr, unsigned ist) +static inline void set_intr_gate_ist(int n, const void *addr, unsigned ist) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS); } -static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist) +static inline void set_system_intr_gate_ist(int n, const void *addr, unsigned ist) { BUG_ON((unsigned)n > 0xFF); _set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS); } +#ifdef CONFIG_X86_32 +static inline void set_user_cs(unsigned long base, unsigned long limit, int cpu) +{ + struct desc_struct d; + + if (likely(limit)) + limit = (limit - 1UL) >> PAGE_SHIFT; + pack_descriptor(&d, base, limit, 0xFB, 0xC); + write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_DEFAULT_USER_CS, &d, DESCTYPE_S); +} +#endif + #endif /* _ASM_X86_DESC_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/device.h linux-2.6.32.59-pax/arch/x86/include/asm/device.h --- linux-2.6.32.59/arch/x86/include/asm/device.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/device.h 2012-03-13 13:15:34.456098026 +0100 @@ -6,7 +6,7 @@ struct dev_archdata { void *acpi_handle; #endif #ifdef CONFIG_X86_64 -struct dma_map_ops *dma_ops; + struct dma_map_ops *dma_ops; #endif #ifdef CONFIG_DMAR void *iommu; /* hook for IOMMU specific extension */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/e820.h linux-2.6.32.59-pax/arch/x86/include/asm/e820.h --- linux-2.6.32.59/arch/x86/include/asm/e820.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/e820.h 2012-03-13 13:15:34.456098026 +0100 @@ -133,7 +133,7 @@ extern char *default_machine_specific_me #define ISA_END_ADDRESS 0x100000 #define is_ISA_range(s, e) ((s) >= ISA_START_ADDRESS && (e) < ISA_END_ADDRESS) -#define BIOS_BEGIN 0x000a0000 +#define BIOS_BEGIN 0x000c0000 #define BIOS_END 0x00100000 #ifdef __KERNEL__ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/elf.h linux-2.6.32.59-pax/arch/x86/include/asm/elf.h --- linux-2.6.32.59/arch/x86/include/asm/elf.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/elf.h 2012-03-13 13:15:34.456098026 +0100 @@ -257,7 +257,25 @@ extern int force_personality32; the loader. We need to make sure that it is out of the way of the program that it will "exec", and that there is sufficient room for the brk. */ +#ifdef CONFIG_PAX_SEGMEXEC +#define ELF_ET_DYN_BASE ((current->mm->pax_flags & MF_PAX_SEGMEXEC) ? SEGMEXEC_TASK_SIZE/3*2 : TASK_SIZE/3*2) +#else #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) +#endif + +#ifdef CONFIG_PAX_ASLR +#ifdef CONFIG_X86_32 +#define PAX_ELF_ET_DYN_BASE 0x10000000UL + +#define PAX_DELTA_MMAP_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) +#define PAX_DELTA_STACK_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16) +#else +#define PAX_ELF_ET_DYN_BASE 0x400000UL + +#define PAX_DELTA_MMAP_LEN ((test_thread_flag(TIF_IA32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) +#define PAX_DELTA_STACK_LEN ((test_thread_flag(TIF_IA32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3) +#endif +#endif /* This yields a mask that user programs can use to figure out what instruction set this CPU supports. This could be done in user space, @@ -310,9 +328,7 @@ do { \ #define ARCH_DLINFO \ do { \ - if (vdso_enabled) \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, \ - (unsigned long)current->mm->context.vdso); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso); \ } while (0) #define AT_SYSINFO 32 @@ -323,7 +339,7 @@ do { \ #endif /* !CONFIG_X86_32 */ -#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso) +#define VDSO_CURRENT_BASE (current->mm->context.vdso) #define VDSO_ENTRY \ ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall)) @@ -337,7 +353,4 @@ extern int arch_setup_additional_pages(s extern int syscall32_setup_pages(struct linux_binprm *, int exstack); #define compat_arch_setup_additional_pages syscall32_setup_pages -extern unsigned long arch_randomize_brk(struct mm_struct *mm); -#define arch_randomize_brk arch_randomize_brk - #endif /* _ASM_X86_ELF_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/emergency-restart.h linux-2.6.32.59-pax/arch/x86/include/asm/emergency-restart.h --- linux-2.6.32.59/arch/x86/include/asm/emergency-restart.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/emergency-restart.h 2012-03-13 13:15:34.460098026 +0100 @@ -15,6 +15,6 @@ enum reboot_type { extern enum reboot_type reboot_type; -extern void machine_emergency_restart(void); +extern void machine_emergency_restart(void) __noreturn; #endif /* _ASM_X86_EMERGENCY_RESTART_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/futex.h linux-2.6.32.59-pax/arch/x86/include/asm/futex.h --- linux-2.6.32.59/arch/x86/include/asm/futex.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/futex.h 2012-03-13 13:15:34.460098026 +0100 @@ -12,16 +12,18 @@ #include #define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \ + typecheck(u32 __user *, uaddr); \ asm volatile("1:\t" insn "\n" \ "2:\t.section .fixup,\"ax\"\n" \ "3:\tmov\t%3, %1\n" \ "\tjmp\t2b\n" \ "\t.previous\n" \ _ASM_EXTABLE(1b, 3b) \ - : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \ + : "=r" (oldval), "=r" (ret), "+m" (*(u32 __user *)____m(uaddr))\ : "i" (-EFAULT), "0" (oparg), "1" (0)) #define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \ + typecheck(u32 __user *, uaddr); \ asm volatile("1:\tmovl %2, %0\n" \ "\tmovl\t%0, %3\n" \ "\t" insn "\n" \ @@ -34,10 +36,10 @@ _ASM_EXTABLE(1b, 4b) \ _ASM_EXTABLE(2b, 4b) \ : "=&a" (oldval), "=&r" (ret), \ - "+m" (*uaddr), "=&r" (tem) \ + "+m" (*(u32 __user *)____m(uaddr)), "=&r" (tem) \ : "r" (oparg), "i" (-EFAULT), "1" (0)) -static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr) +static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) { int op = (encoded_op >> 28) & 7; int cmp = (encoded_op >> 24) & 15; @@ -61,10 +63,10 @@ static inline int futex_atomic_op_inuser switch (op) { case FUTEX_OP_SET: - __futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg); + __futex_atomic_op1(__copyuser_seg"xchgl %0, %2", ret, oldval, uaddr, oparg); break; case FUTEX_OP_ADD: - __futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret, oldval, + __futex_atomic_op1(LOCK_PREFIX __copyuser_seg"xaddl %0, %2", ret, oldval, uaddr, oparg); break; case FUTEX_OP_OR: @@ -109,7 +111,7 @@ static inline int futex_atomic_op_inuser return ret; } -static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, +static inline int futex_atomic_cmpxchg_inatomic(u32 __user *uaddr, int oldval, int newval) { @@ -119,16 +121,16 @@ static inline int futex_atomic_cmpxchg_i return -ENOSYS; #endif - if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int))) + if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) return -EFAULT; - asm volatile("1:\t" LOCK_PREFIX "cmpxchgl %3, %1\n" + asm volatile("1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %3, %1\n" "2:\t.section .fixup, \"ax\"\n" "3:\tmov %2, %0\n" "\tjmp 2b\n" "\t.previous\n" _ASM_EXTABLE(1b, 3b) - : "=a" (oldval), "+m" (*uaddr) + : "=a" (oldval), "+m" (*(u32 *)____m(uaddr)) : "i" (-EFAULT), "r" (newval), "0" (oldval) : "memory" ); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/hw_irq.h linux-2.6.32.59-pax/arch/x86/include/asm/hw_irq.h --- linux-2.6.32.59/arch/x86/include/asm/hw_irq.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/hw_irq.h 2012-03-13 13:15:34.460098026 +0100 @@ -92,8 +92,8 @@ extern void setup_ioapic_dest(void); extern void enable_IO_APIC(void); /* Statistics */ -extern atomic_t irq_err_count; -extern atomic_t irq_mis_count; +extern atomic_unchecked_t irq_err_count; +extern atomic_unchecked_t irq_mis_count; /* EISA */ extern void eisa_set_level_irq(unsigned int irq); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/i387.h linux-2.6.32.59-pax/arch/x86/include/asm/i387.h --- linux-2.6.32.59/arch/x86/include/asm/i387.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/i387.h 2012-03-13 13:15:34.460098026 +0100 @@ -60,6 +60,11 @@ static inline int fxrstor_checking(struc { int err; +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)fx < PAX_USER_SHADOW_BASE) + fx = (struct i387_fxsave_struct *)((void *)fx + PAX_USER_SHADOW_BASE); +#endif + asm volatile("1: rex64/fxrstor (%[fx])\n\t" "2:\n" ".section .fixup,\"ax\"\n" @@ -105,6 +110,11 @@ static inline int fxsave_user(struct i38 { int err; +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)fx < PAX_USER_SHADOW_BASE) + fx = (struct i387_fxsave_struct __user *)((void __user *)fx + PAX_USER_SHADOW_BASE); +#endif + asm volatile("1: rex64/fxsave (%[fx])\n\t" "2:\n" ".section .fixup,\"ax\"\n" @@ -195,13 +205,8 @@ static inline int fxrstor_checking(struc } /* We need a safe address that is cheap to find and that is already - in L1 during context switch. The best choices are unfortunately - different for UP and SMP */ -#ifdef CONFIG_SMP -#define safe_address (__per_cpu_offset[0]) -#else -#define safe_address (kstat_cpu(0).cpustat.user) -#endif + in L1 during context switch. */ +#define safe_address (init_tss[smp_processor_id()].x86_tss.sp0) /* * These must be called with preempt disabled @@ -291,7 +296,7 @@ static inline void kernel_fpu_begin(void struct thread_info *me = current_thread_info(); preempt_disable(); if (me->status & TS_USEDFPU) - __save_init_fpu(me->task); + __save_init_fpu(current); else clts(); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/io_32.h linux-2.6.32.59-pax/arch/x86/include/asm/io_32.h --- linux-2.6.32.59/arch/x86/include/asm/io_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/io_32.h 2012-03-13 13:15:34.460098026 +0100 @@ -3,6 +3,7 @@ #include #include +#include /* * This file contains the definitions for the x86 IO instructions @@ -42,6 +43,17 @@ #ifdef __KERNEL__ +#define ARCH_HAS_VALID_PHYS_ADDR_RANGE +static inline int valid_phys_addr_range(unsigned long addr, size_t count) +{ + return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; +} + +static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count) +{ + return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; +} + #include #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/io_64.h linux-2.6.32.59-pax/arch/x86/include/asm/io_64.h --- linux-2.6.32.59/arch/x86/include/asm/io_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/io_64.h 2012-03-13 13:15:34.464098026 +0100 @@ -140,6 +140,17 @@ __OUTS(l) #include +#define ARCH_HAS_VALID_PHYS_ADDR_RANGE +static inline int valid_phys_addr_range(unsigned long addr, size_t count) +{ + return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; +} + +static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count) +{ + return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0; +} + #include void __memcpy_fromio(void *, unsigned long, unsigned); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/irqflags.h linux-2.6.32.59-pax/arch/x86/include/asm/irqflags.h --- linux-2.6.32.59/arch/x86/include/asm/irqflags.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/irqflags.h 2012-03-13 13:15:34.464098026 +0100 @@ -142,6 +142,11 @@ static inline unsigned long __raw_local_ sti; \ sysexit +#define GET_CR0_INTO_RDI mov %cr0, %rdi +#define SET_RDI_INTO_CR0 mov %rdi, %cr0 +#define GET_CR3_INTO_RDI mov %cr3, %rdi +#define SET_RDI_INTO_CR3 mov %rdi, %cr3 + #else #define INTERRUPT_RETURN iret #define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/kprobes.h linux-2.6.32.59-pax/arch/x86/include/asm/kprobes.h --- linux-2.6.32.59/arch/x86/include/asm/kprobes.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/kprobes.h 2012-03-13 13:15:34.464098026 +0100 @@ -34,13 +34,8 @@ typedef u8 kprobe_opcode_t; #define BREAKPOINT_INSTRUCTION 0xcc #define RELATIVEJUMP_INSTRUCTION 0xe9 #define MAX_INSN_SIZE 16 -#define MAX_STACK_SIZE 64 -#define MIN_STACK_SIZE(ADDR) \ - (((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \ - THREAD_SIZE - (unsigned long)(ADDR))) \ - ? (MAX_STACK_SIZE) \ - : (((unsigned long)current_thread_info()) + \ - THREAD_SIZE - (unsigned long)(ADDR))) +#define MAX_STACK_SIZE 64UL +#define MIN_STACK_SIZE(ADDR) min(MAX_STACK_SIZE, current->thread.sp0 - (unsigned long)(ADDR)) #define flush_insn_slot(p) do { } while (0) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/kvm_host.h linux-2.6.32.59-pax/arch/x86/include/asm/kvm_host.h --- linux-2.6.32.59/arch/x86/include/asm/kvm_host.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/kvm_host.h 2012-05-20 19:21:25.257167271 +0200 @@ -534,7 +534,7 @@ struct kvm_x86_ops { bool (*gb_page_enable)(void); const struct trace_print_flags *exit_reasons_str; -}; +} __do_const; extern struct kvm_x86_ops *kvm_x86_ops; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/local.h linux-2.6.32.59-pax/arch/x86/include/asm/local.h --- linux-2.6.32.59/arch/x86/include/asm/local.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/local.h 2012-03-13 13:15:34.464098026 +0100 @@ -18,26 +18,58 @@ typedef struct { static inline void local_inc(local_t *l) { - asm volatile(_ASM_INC "%0" + asm volatile(_ASM_INC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_DEC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter)); } static inline void local_dec(local_t *l) { - asm volatile(_ASM_DEC "%0" + asm volatile(_ASM_DEC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_INC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter)); } static inline void local_add(long i, local_t *l) { - asm volatile(_ASM_ADD "%1,%0" + asm volatile(_ASM_ADD "%1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_SUB "%1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter) : "ir" (i)); } static inline void local_sub(long i, local_t *l) { - asm volatile(_ASM_SUB "%1,%0" + asm volatile(_ASM_SUB "%1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_ADD "%1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (l->a.counter) : "ir" (i)); } @@ -55,7 +87,16 @@ static inline int local_sub_and_test(lon { unsigned char c; - asm volatile(_ASM_SUB "%2,%0; sete %1" + asm volatile(_ASM_SUB "%2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_ADD "%2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (l->a.counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -73,7 +114,16 @@ static inline int local_dec_and_test(loc { unsigned char c; - asm volatile(_ASM_DEC "%0; sete %1" + asm volatile(_ASM_DEC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_INC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (l->a.counter), "=qm" (c) : : "memory"); return c != 0; @@ -91,7 +141,16 @@ static inline int local_inc_and_test(loc { unsigned char c; - asm volatile(_ASM_INC "%0; sete %1" + asm volatile(_ASM_INC "%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_DEC "%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sete %1\n" : "+m" (l->a.counter), "=qm" (c) : : "memory"); return c != 0; @@ -110,7 +169,16 @@ static inline int local_add_negative(lon { unsigned char c; - asm volatile(_ASM_ADD "%2,%0; sets %1" + asm volatile(_ASM_ADD "%2,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_SUB "%2,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + "sets %1\n" : "+m" (l->a.counter), "=qm" (c) : "ir" (i) : "memory"); return c; @@ -133,7 +201,15 @@ static inline long local_add_return(long #endif /* Modern 486+ processor */ __i = i; - asm volatile(_ASM_XADD "%0, %1;" + asm volatile(_ASM_XADD "%0, %1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + _ASM_MOV "%0,%1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+r" (i), "+m" (l->a.counter) : : "memory"); return i + __i; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/mman.h linux-2.6.32.59-pax/arch/x86/include/asm/mman.h --- linux-2.6.32.59/arch/x86/include/asm/mman.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/mman.h 2012-03-13 13:15:34.468098025 +0100 @@ -5,4 +5,14 @@ #include +#ifdef __KERNEL__ +#ifndef __ASSEMBLY__ +#ifdef CONFIG_X86_32 +#define arch_mmap_check i386_mmap_check +int i386_mmap_check(unsigned long addr, unsigned long len, + unsigned long flags); +#endif +#endif +#endif + #endif /* _ASM_X86_MMAN_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/mmu_context.h linux-2.6.32.59-pax/arch/x86/include/asm/mmu_context.h --- linux-2.6.32.59/arch/x86/include/asm/mmu_context.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/mmu_context.h 2012-05-28 00:40:22.987136113 +0200 @@ -24,6 +24,18 @@ void destroy_context(struct mm_struct *m static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + unsigned int i; + pgd_t *pgd; + + pax_open_kernel(); + pgd = get_cpu_pgd(smp_processor_id()); + for (i = USER_PGD_PTRS; i < 2 * USER_PGD_PTRS; ++i) + set_pgd_batched(pgd+i, native_make_pgd(0)); + pax_close_kernel(); +#endif + #ifdef CONFIG_SMP if (percpu_read(cpu_tlbstate.state) == TLBSTATE_OK) percpu_write(cpu_tlbstate.state, TLBSTATE_LAZY); @@ -34,16 +46,30 @@ static inline void switch_mm(struct mm_s struct task_struct *tsk) { unsigned cpu = smp_processor_id(); +#if defined(CONFIG_X86_32) && defined(CONFIG_SMP) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) + int tlbstate = TLBSTATE_OK; +#endif if (likely(prev != next)) { #ifdef CONFIG_SMP +#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) + tlbstate = percpu_read(cpu_tlbstate.state); +#endif percpu_write(cpu_tlbstate.state, TLBSTATE_OK); percpu_write(cpu_tlbstate.active_mm, next); #endif cpumask_set_cpu(cpu, mm_cpumask(next)); /* Re-load page tables */ +#ifdef CONFIG_PAX_PER_CPU_PGD + pax_open_kernel(); + __clone_user_pgds(get_cpu_pgd(cpu), next->pgd); + __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd); + pax_close_kernel(); + load_cr3(get_cpu_pgd(cpu)); +#else load_cr3(next->pgd); +#endif /* stop flush ipis for the previous mm */ cpumask_clear_cpu(cpu, mm_cpumask(prev)); @@ -53,9 +79,38 @@ static inline void switch_mm(struct mm_s */ if (unlikely(prev->context.ldt != next->context.ldt)) load_LDT_nolock(&next->context); - } + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) + if (!nx_enabled) { + smp_mb__before_clear_bit(); + cpu_clear(cpu, prev->context.cpu_user_cs_mask); + smp_mb__after_clear_bit(); + cpu_set(cpu, next->context.cpu_user_cs_mask); + } +#endif + +#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) + if (unlikely(prev->context.user_cs_base != next->context.user_cs_base || + prev->context.user_cs_limit != next->context.user_cs_limit)) + set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); #ifdef CONFIG_SMP + else if (unlikely(tlbstate != TLBSTATE_OK)) + set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); +#endif +#endif + + } else { + +#ifdef CONFIG_PAX_PER_CPU_PGD + pax_open_kernel(); + __clone_user_pgds(get_cpu_pgd(cpu), next->pgd); + __shadow_user_pgds(get_cpu_pgd(cpu) + USER_PGD_PTRS, next->pgd); + pax_close_kernel(); + load_cr3(get_cpu_pgd(cpu)); +#endif + +#ifdef CONFIG_SMP percpu_write(cpu_tlbstate.state, TLBSTATE_OK); BUG_ON(percpu_read(cpu_tlbstate.active_mm) != next); @@ -64,11 +119,28 @@ static inline void switch_mm(struct mm_s * tlb flush IPI delivery. We must reload CR3 * to make sure to use no freed page tables. */ + +#ifndef CONFIG_PAX_PER_CPU_PGD load_cr3(next->pgd); +#endif + load_LDT_nolock(&next->context); + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) + if (!nx_enabled) + cpu_set(cpu, next->context.cpu_user_cs_mask); +#endif + +#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)) +#ifdef CONFIG_PAX_PAGEEXEC + if (!((next->pax_flags & MF_PAX_PAGEEXEC) && nx_enabled)) +#endif + set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu); +#endif + } - } #endif + } } #define activate_mm(prev, next) \ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/mmu.h linux-2.6.32.59-pax/arch/x86/include/asm/mmu.h --- linux-2.6.32.59/arch/x86/include/asm/mmu.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/mmu.h 2012-03-13 13:15:34.468098025 +0100 @@ -9,10 +9,23 @@ * we put the segment information here. */ typedef struct { - void *ldt; + struct desc_struct *ldt; int size; struct mutex lock; - void *vdso; + unsigned long vdso; + +#ifdef CONFIG_X86_32 +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + unsigned long user_cs_base; + unsigned long user_cs_limit; + +#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) + cpumask_t cpu_user_cs_mask; +#endif + +#endif +#endif + } mm_context_t; #ifdef CONFIG_SMP diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/module.h linux-2.6.32.59-pax/arch/x86/include/asm/module.h --- linux-2.6.32.59/arch/x86/include/asm/module.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/module.h 2012-03-13 13:15:34.468098025 +0100 @@ -5,6 +5,7 @@ #ifdef CONFIG_X86_64 /* X86_64 does not define MODULE_PROC_FAMILY */ +#define MODULE_PROC_FAMILY "" #elif defined CONFIG_M386 #define MODULE_PROC_FAMILY "386 " #elif defined CONFIG_M486 @@ -59,13 +60,26 @@ #error unknown processor family #endif -#ifdef CONFIG_X86_32 -# ifdef CONFIG_4KSTACKS -# define MODULE_STACKSIZE "4KSTACKS " -# else -# define MODULE_STACKSIZE "" -# endif -# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE +#if defined(CONFIG_X86_32) && defined(CONFIG_4KSTACKS) +#define MODULE_STACKSIZE "4KSTACKS " +#else +#define MODULE_STACKSIZE "" +#endif + +#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS +#define MODULE_PAX_KERNEXEC "KERNEXEC_BTS " +#elif defined(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR) +#define MODULE_PAX_KERNEXEC "KERNEXEC_OR " +#else +#define MODULE_PAX_KERNEXEC "" #endif +#ifdef CONFIG_PAX_MEMORY_UDEREF +#define MODULE_PAX_UDEREF "UDEREF " +#else +#define MODULE_PAX_UDEREF "" +#endif + +#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_STACKSIZE MODULE_PAX_KERNEXEC MODULE_PAX_UDEREF + #endif /* _ASM_X86_MODULE_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/page_64_types.h linux-2.6.32.59-pax/arch/x86/include/asm/page_64_types.h --- linux-2.6.32.59/arch/x86/include/asm/page_64_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/page_64_types.h 2012-03-13 13:15:34.468098025 +0100 @@ -56,7 +56,7 @@ void copy_page(void *to, void *from); /* duplicated to the one in bootmem.h */ extern unsigned long max_pfn; -extern unsigned long phys_base; +extern const unsigned long phys_base; extern unsigned long __phys_addr(unsigned long); #define __phys_reloc_hide(x) (x) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/paravirt.h linux-2.6.32.59-pax/arch/x86/include/asm/paravirt.h --- linux-2.6.32.59/arch/x86/include/asm/paravirt.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/paravirt.h 2012-03-13 13:15:34.472098025 +0100 @@ -648,6 +648,18 @@ static inline void set_pgd(pgd_t *pgdp, val); } +static inline void set_pgd_batched(pgd_t *pgdp, pgd_t pgd) +{ + pgdval_t val = native_pgd_val(pgd); + + if (sizeof(pgdval_t) > sizeof(long)) + PVOP_VCALL3(pv_mmu_ops.set_pgd_batched, pgdp, + val, (u64)val >> 32); + else + PVOP_VCALL2(pv_mmu_ops.set_pgd_batched, pgdp, + val); +} + static inline void pgd_clear(pgd_t *pgdp) { set_pgd(pgdp, __pgd(0)); @@ -729,6 +741,21 @@ static inline void __set_fixmap(unsigned pv_mmu_ops.set_fixmap(idx, phys, flags); } +#ifdef CONFIG_PAX_KERNEXEC +static inline unsigned long pax_open_kernel(void) +{ + return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_open_kernel); +} + +static inline unsigned long pax_close_kernel(void) +{ + return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_close_kernel); +} +#else +static inline unsigned long pax_open_kernel(void) { return 0; } +static inline unsigned long pax_close_kernel(void) { return 0; } +#endif + #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) static inline int __raw_spin_is_locked(struct raw_spinlock *lock) @@ -945,7 +972,7 @@ extern void default_banner(void); #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4) #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4) -#define PARA_INDIRECT(addr) *%cs:addr +#define PARA_INDIRECT(addr) *%ss:addr #endif #define INTERRUPT_RETURN \ @@ -1022,6 +1049,21 @@ extern void default_banner(void); PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \ CLBR_NONE, \ jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit)) + +#define GET_CR0_INTO_RDI \ + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \ + mov %rax,%rdi + +#define SET_RDI_INTO_CR0 \ + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) + +#define GET_CR3_INTO_RDI \ + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr3); \ + mov %rax,%rdi + +#define SET_RDI_INTO_CR3 \ + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_write_cr3) + #endif /* CONFIG_X86_32 */ #endif /* __ASSEMBLY__ */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/paravirt_types.h linux-2.6.32.59-pax/arch/x86/include/asm/paravirt_types.h --- linux-2.6.32.59/arch/x86/include/asm/paravirt_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/paravirt_types.h 2012-03-13 13:15:34.472098025 +0100 @@ -78,19 +78,19 @@ struct pv_init_ops { */ unsigned (*patch)(u8 type, u16 clobber, void *insnbuf, unsigned long addr, unsigned len); -}; +} __no_const; struct pv_lazy_ops { /* Set deferred update mode, used for batching operations. */ void (*enter)(void); void (*leave)(void); -}; +} __no_const; struct pv_time_ops { unsigned long long (*sched_clock)(void); unsigned long (*get_tsc_khz)(void); -}; +} __no_const; struct pv_cpu_ops { /* hooks for various privileged instructions */ @@ -186,7 +186,7 @@ struct pv_cpu_ops { void (*start_context_switch)(struct task_struct *prev); void (*end_context_switch)(struct task_struct *next); -}; +} __no_const; struct pv_irq_ops { /* @@ -217,7 +217,7 @@ struct pv_apic_ops { unsigned long start_eip, unsigned long start_esp); #endif -}; +} __no_const; struct pv_mmu_ops { unsigned long (*read_cr2)(void); @@ -301,6 +301,7 @@ struct pv_mmu_ops { struct paravirt_callee_save make_pud; void (*set_pgd)(pgd_t *pudp, pgd_t pgdval); + void (*set_pgd_batched)(pgd_t *pudp, pgd_t pgdval); #endif /* PAGETABLE_LEVELS == 4 */ #endif /* PAGETABLE_LEVELS >= 3 */ @@ -316,6 +317,12 @@ struct pv_mmu_ops { an mfn. We can tell which is which from the index. */ void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx, phys_addr_t phys, pgprot_t flags); + +#ifdef CONFIG_PAX_KERNEXEC + unsigned long (*pax_open_kernel)(void); + unsigned long (*pax_close_kernel)(void); +#endif + }; struct raw_spinlock; @@ -326,7 +333,7 @@ struct pv_lock_ops { void (*spin_lock_flags)(struct raw_spinlock *lock, unsigned long flags); int (*spin_trylock)(struct raw_spinlock *lock); void (*spin_unlock)(struct raw_spinlock *lock); -}; +} __no_const; /* This contains all the paravirt structures: we get a convenient * number for each function using the offset which we use to indicate diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/percpu.h linux-2.6.32.59-pax/arch/x86/include/asm/percpu.h --- linux-2.6.32.59/arch/x86/include/asm/percpu.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/percpu.h 2012-03-13 13:15:34.472098025 +0100 @@ -78,6 +78,7 @@ do { \ if (0) { \ T__ tmp__; \ tmp__ = (val); \ + (void)tmp__; \ } \ switch (sizeof(var)) { \ case 1: \ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgalloc.h linux-2.6.32.59-pax/arch/x86/include/asm/pgalloc.h --- linux-2.6.32.59/arch/x86/include/asm/pgalloc.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgalloc.h 2012-05-07 17:49:11.836114632 +0200 @@ -63,6 +63,13 @@ static inline void pmd_populate_kernel(s pmd_t *pmd, pte_t *pte) { paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); + set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE)); +} + +static inline void pmd_populate_user(struct mm_struct *mm, + pmd_t *pmd, pte_t *pte) +{ + paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT); set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)); } @@ -99,12 +106,22 @@ static inline void __pmd_free_tlb(struct #ifdef CONFIG_X86_PAE extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd); +static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) +{ + pud_populate(mm, pudp, pmd); +} #else /* !CONFIG_X86_PAE */ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd))); } + +static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT); + set_pud(pud, __pud(_KERNPG_TABLE | __pa(pmd))); +} #endif /* CONFIG_X86_PAE */ #if PAGETABLE_LEVELS > 3 @@ -114,6 +131,12 @@ static inline void pgd_populate(struct m set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud))); } +static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) +{ + paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT); + set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(pud))); +} + static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable-2level.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable-2level.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable-2level.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable-2level.h 2012-03-13 13:15:34.476098025 +0100 @@ -18,7 +18,9 @@ static inline void native_set_pte(pte_t static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { + pax_open_kernel(); *pmdp = pmd; + pax_close_kernel(); } static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable_32.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_32.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_32.h 2012-03-13 13:15:34.476098025 +0100 @@ -26,9 +26,6 @@ struct mm_struct; struct vm_area_struct; -extern pgd_t swapper_pg_dir[1024]; -extern pgd_t trampoline_pg_dir[1024]; - static inline void pgtable_cache_init(void) { } static inline void check_pgt_cache(void) { } void paging_init(void); @@ -49,6 +46,12 @@ extern void set_pmd_pfn(unsigned long, u # include #endif +extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; +extern pgd_t trampoline_pg_dir[PTRS_PER_PGD]; +#ifdef CONFIG_X86_PAE +extern pmd_t swapper_pm_dir[PTRS_PER_PGD][PTRS_PER_PMD]; +#endif + #if defined(CONFIG_HIGHPTE) #define __KM_PTE \ (in_nmi() ? KM_NMI_PTE : \ @@ -73,7 +76,9 @@ extern void set_pmd_pfn(unsigned long, u /* Clear a kernel PTE and flush it from the TLB */ #define kpte_clear_flush(ptep, vaddr) \ do { \ + pax_open_kernel(); \ pte_clear(&init_mm, (vaddr), (ptep)); \ + pax_close_kernel(); \ __flush_tlb_one((vaddr)); \ } while (0) @@ -85,6 +90,9 @@ do { \ #endif /* !__ASSEMBLY__ */ +#define HAVE_ARCH_UNMAPPED_AREA +#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN + /* * kern_addr_valid() is (1) for FLATMEM and (0) for * SPARSEMEM and DISCONTIGMEM diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable_32_types.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_32_types.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable_32_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_32_types.h 2012-03-13 13:15:34.476098025 +0100 @@ -8,7 +8,7 @@ */ #ifdef CONFIG_X86_PAE # include -# define PMD_SIZE (1UL << PMD_SHIFT) +# define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) # define PMD_MASK (~(PMD_SIZE - 1)) #else # include @@ -46,6 +46,19 @@ extern bool __vmalloc_start_set; /* set # define VMALLOC_END (FIXADDR_START - 2 * PAGE_SIZE) #endif +#ifdef CONFIG_PAX_KERNEXEC +#ifndef __ASSEMBLY__ +extern unsigned char MODULES_EXEC_VADDR[]; +extern unsigned char MODULES_EXEC_END[]; +#endif +#include +#define ktla_ktva(addr) (addr + LOAD_PHYSICAL_ADDR + PAGE_OFFSET) +#define ktva_ktla(addr) (addr - LOAD_PHYSICAL_ADDR - PAGE_OFFSET) +#else +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) +#endif + #define MODULES_VADDR VMALLOC_START #define MODULES_END VMALLOC_END #define MODULES_LEN (MODULES_VADDR - MODULES_END) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable-3level.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable-3level.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable-3level.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable-3level.h 2012-03-13 13:15:34.476098025 +0100 @@ -38,12 +38,16 @@ static inline void native_set_pte_atomic static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { + pax_open_kernel(); set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd)); + pax_close_kernel(); } static inline void native_set_pud(pud_t *pudp, pud_t pud) { + pax_open_kernel(); set_64bit((unsigned long long *)(pudp), native_pud_val(pud)); + pax_close_kernel(); } /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable_64.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_64.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_64.h 2012-05-07 17:49:11.840114631 +0200 @@ -16,10 +16,14 @@ extern pud_t level3_kernel_pgt[512]; extern pud_t level3_ident_pgt[512]; +extern pud_t level3_vmalloc_start_pgt[512]; +extern pud_t level3_vmalloc_end_pgt[512]; +extern pud_t level3_vmemmap_pgt[512]; +extern pud_t level2_vmemmap_pgt[512]; extern pmd_t level2_kernel_pgt[512]; extern pmd_t level2_fixmap_pgt[512]; -extern pmd_t level2_ident_pgt[512]; -extern pgd_t init_level4_pgt[]; +extern pmd_t level2_ident_pgt[512*2]; +extern pgd_t init_level4_pgt[512]; #define swapper_pg_dir init_level4_pgt @@ -74,7 +78,9 @@ static inline pte_t native_ptep_get_and_ static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { + pax_open_kernel(); *pmdp = pmd; + pax_close_kernel(); } static inline void native_pmd_clear(pmd_t *pmd) @@ -84,7 +90,9 @@ static inline void native_pmd_clear(pmd_ static inline void native_set_pud(pud_t *pudp, pud_t pud) { + pax_open_kernel(); *pudp = pud; + pax_close_kernel(); } static inline void native_pud_clear(pud_t *pud) @@ -94,6 +102,13 @@ static inline void native_pud_clear(pud_ static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) { + pax_open_kernel(); + *pgdp = pgd; + pax_close_kernel(); +} + +static inline void native_set_pgd_batched(pgd_t *pgdp, pgd_t pgd) +{ *pgdp = pgd; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable_64_types.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_64_types.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable_64_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_64_types.h 2012-03-13 13:15:34.480098025 +0100 @@ -59,5 +59,10 @@ typedef struct { pteval_t pte; } pte_t; #define MODULES_VADDR _AC(0xffffffffa0000000, UL) #define MODULES_END _AC(0xffffffffff000000, UL) #define MODULES_LEN (MODULES_END - MODULES_VADDR) +#define MODULES_EXEC_VADDR MODULES_VADDR +#define MODULES_EXEC_END MODULES_END + +#define ktla_ktva(addr) (addr) +#define ktva_ktla(addr) (addr) #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable.h 2012-05-28 00:40:22.987136113 +0200 @@ -39,6 +39,7 @@ extern struct list_head pgd_list; #ifndef __PAGETABLE_PUD_FOLDED #define set_pgd(pgdp, pgd) native_set_pgd(pgdp, pgd) +#define set_pgd_batched(pgdp, pgd) native_set_pgd_batched(pgdp, pgd) #define pgd_clear(pgd) native_pgd_clear(pgd) #endif @@ -74,12 +75,51 @@ extern struct list_head pgd_list; #define arch_end_context_switch(prev) do {} while(0) +#define pax_open_kernel() native_pax_open_kernel() +#define pax_close_kernel() native_pax_close_kernel() #endif /* CONFIG_PARAVIRT */ +#define __HAVE_ARCH_PAX_OPEN_KERNEL +#define __HAVE_ARCH_PAX_CLOSE_KERNEL + +#ifdef CONFIG_PAX_KERNEXEC +static inline unsigned long native_pax_open_kernel(void) +{ + unsigned long cr0; + + preempt_disable(); + barrier(); + cr0 = read_cr0() ^ X86_CR0_WP; + BUG_ON(unlikely(cr0 & X86_CR0_WP)); + write_cr0(cr0); + return cr0 ^ X86_CR0_WP; +} + +static inline unsigned long native_pax_close_kernel(void) +{ + unsigned long cr0; + + cr0 = read_cr0() ^ X86_CR0_WP; + BUG_ON(unlikely(!(cr0 & X86_CR0_WP))); + write_cr0(cr0); + barrier(); + preempt_enable_no_resched(); + return cr0 ^ X86_CR0_WP; +} +#else +static inline unsigned long native_pax_open_kernel(void) { return 0; } +static inline unsigned long native_pax_close_kernel(void) { return 0; } +#endif + /* * The following only work if pte_present() is true. * Undefined behaviour if not.. */ +static inline int pte_user(pte_t pte) +{ + return pte_val(pte) & _PAGE_USER; +} + static inline int pte_dirty(pte_t pte) { return pte_flags(pte) & _PAGE_DIRTY; @@ -167,9 +207,29 @@ static inline pte_t pte_wrprotect(pte_t return pte_clear_flags(pte, _PAGE_RW); } +static inline pte_t pte_mkread(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_USER); +} + static inline pte_t pte_mkexec(pte_t pte) { - return pte_clear_flags(pte, _PAGE_NX); +#ifdef CONFIG_X86_PAE + if (__supported_pte_mask & _PAGE_NX) + return pte_clear_flags(pte, _PAGE_NX); + else +#endif + return pte_set_flags(pte, _PAGE_USER); +} + +static inline pte_t pte_exprotect(pte_t pte) +{ +#ifdef CONFIG_X86_PAE + if (__supported_pte_mask & _PAGE_NX) + return pte_set_flags(pte, _PAGE_NX); + else +#endif + return pte_clear_flags(pte, _PAGE_USER); } static inline pte_t pte_mkdirty(pte_t pte) @@ -302,6 +362,15 @@ pte_t *populate_extra_pte(unsigned long #endif #ifndef __ASSEMBLY__ + +#ifdef CONFIG_PAX_PER_CPU_PGD +extern pgd_t cpu_pgd[NR_CPUS][PTRS_PER_PGD]; +static inline pgd_t *get_cpu_pgd(unsigned int cpu) +{ + return cpu_pgd[cpu]; +} +#endif + #include static inline int pte_none(pte_t pte) @@ -472,7 +541,7 @@ static inline pud_t *pud_offset(pgd_t *p static inline int pgd_bad(pgd_t pgd) { - return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE; + return (pgd_flags(pgd) & ~(_PAGE_USER | _PAGE_NX)) != _KERNPG_TABLE; } static inline int pgd_none(pgd_t pgd) @@ -495,7 +564,12 @@ static inline int pgd_none(pgd_t pgd) * pgd_offset() returns a (pgd_t *) * pgd_index() is used get the offset into the pgd page's array of pgd_t's; */ -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address))) +#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) + +#ifdef CONFIG_PAX_PER_CPU_PGD +#define pgd_offset_cpu(cpu, address) (get_cpu_pgd(cpu) + pgd_index(address)) +#endif + /* * a shortcut which implies the use of the kernel's pgd, instead * of a process's @@ -506,6 +580,20 @@ static inline int pgd_none(pgd_t pgd) #define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET) #define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY) +#ifdef CONFIG_X86_32 +#define USER_PGD_PTRS KERNEL_PGD_BOUNDARY +#else +#define TASK_SIZE_MAX_SHIFT CONFIG_TASK_SIZE_MAX_SHIFT +#define USER_PGD_PTRS (_AC(1,UL) << (TASK_SIZE_MAX_SHIFT - PGDIR_SHIFT)) + +#ifdef CONFIG_PAX_MEMORY_UDEREF +#define PAX_USER_SHADOW_BASE (_AC(1,UL) << TASK_SIZE_MAX_SHIFT) +#else +#define PAX_USER_SHADOW_BASE (_AC(0,UL)) +#endif + +#endif + #ifndef __ASSEMBLY__ extern int direct_gbpages; @@ -611,11 +699,23 @@ static inline void ptep_set_wrprotect(st * dst and src can be on the same page, but the range must not overlap, * and must not cross a page boundary. */ -static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) +static inline void clone_pgd_range(pgd_t *dst, const pgd_t *src, int count) { - memcpy(dst, src, count * sizeof(pgd_t)); + pax_open_kernel(); + while (count--) + *dst++ = *src++; + pax_close_kernel(); } +#ifdef CONFIG_PAX_PER_CPU_PGD +extern void __clone_user_pgds(pgd_t *dst, const pgd_t *src); +#endif + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +extern void __shadow_user_pgds(pgd_t *dst, const pgd_t *src); +#else +static inline void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) {} +#endif #include #endif /* __ASSEMBLY__ */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/pgtable_types.h linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_types.h --- linux-2.6.32.59/arch/x86/include/asm/pgtable_types.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/pgtable_types.h 2012-03-13 13:15:34.480098025 +0100 @@ -16,12 +16,11 @@ #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */ #define _PAGE_BIT_PAT 7 /* on 4KB pages */ #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */ -#define _PAGE_BIT_UNUSED1 9 /* available for programmer */ +#define _PAGE_BIT_SPECIAL 9 /* special mappings, no associated struct page */ #define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */ #define _PAGE_BIT_HIDDEN 11 /* hidden by kmemcheck */ #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */ -#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1 -#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1 +#define _PAGE_BIT_CPA_TEST _PAGE_BIT_SPECIAL #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ /* If _PAGE_BIT_PRESENT is clear, we use these: */ @@ -39,7 +38,6 @@ #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY) #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE) #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL) -#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1) #define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP) #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT) #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE) @@ -55,8 +53,10 @@ #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) -#else +#elif defined(CONFIG_KMEMCHECK) #define _PAGE_NX (_AT(pteval_t, 0)) +#else +#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN) #endif #define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE) @@ -93,6 +93,9 @@ #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \ _PAGE_ACCESSED) +#define PAGE_READONLY_NOEXEC PAGE_READONLY +#define PAGE_SHARED_NOEXEC PAGE_SHARED + #define __PAGE_KERNEL_EXEC \ (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL) #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) @@ -103,8 +106,8 @@ #define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC) #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) #define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD) -#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) -#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT) +#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RO | _PAGE_USER) +#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_RO | _PAGE_PCD | _PAGE_PWT | _PAGE_USER) #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) #define __PAGE_KERNEL_LARGE_NOCACHE (__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE) #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE) @@ -163,8 +166,8 @@ * bits are combined, this will alow user to access the high address mapped * VDSO in the presence of CONFIG_COMPAT_VDSO */ -#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */ -#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */ +#define PTE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ +#define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */ #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */ #endif @@ -202,7 +205,17 @@ static inline pgdval_t pgd_flags(pgd_t p { return native_pgd_val(pgd) & PTE_FLAGS_MASK; } +#endif +#if PAGETABLE_LEVELS == 3 +#include +#endif + +#if PAGETABLE_LEVELS == 2 +#include +#endif + +#ifndef __ASSEMBLY__ #if PAGETABLE_LEVELS > 3 typedef struct { pudval_t pud; } pud_t; @@ -216,8 +229,6 @@ static inline pudval_t native_pud_val(pu return pud.pud; } #else -#include - static inline pudval_t native_pud_val(pud_t pud) { return native_pgd_val(pud.pgd); @@ -237,8 +248,6 @@ static inline pmdval_t native_pmd_val(pm return pmd.pmd; } #else -#include - static inline pmdval_t native_pmd_val(pmd_t pmd) { return native_pgd_val(pmd.pud.pgd); @@ -278,7 +287,16 @@ typedef struct page *pgtable_t; extern pteval_t __supported_pte_mask; extern void set_nx(void); + +#ifdef CONFIG_X86_32 +#ifdef CONFIG_X86_PAE extern int nx_enabled; +#else +#define nx_enabled (0) +#endif +#else +#define nx_enabled (1) +#endif #define pgprot_writecombine pgprot_writecombine extern pgprot_t pgprot_writecombine(pgprot_t prot); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/processor.h linux-2.6.32.59-pax/arch/x86/include/asm/processor.h --- linux-2.6.32.59/arch/x86/include/asm/processor.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/processor.h 2012-03-13 13:15:34.480098025 +0100 @@ -272,7 +272,7 @@ struct tss_struct { } ____cacheline_aligned; -DECLARE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss); +extern struct tss_struct init_tss[NR_CPUS]; /* * Save the original ist values for checking stack pointers during debugging @@ -911,11 +911,18 @@ static inline void spin_lock_prefetch(co */ #define TASK_SIZE PAGE_OFFSET #define TASK_SIZE_MAX TASK_SIZE + +#ifdef CONFIG_PAX_SEGMEXEC +#define SEGMEXEC_TASK_SIZE (TASK_SIZE / 2) +#define STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE) +#else #define STACK_TOP TASK_SIZE -#define STACK_TOP_MAX STACK_TOP +#endif + +#define STACK_TOP_MAX TASK_SIZE #define INIT_THREAD { \ - .sp0 = sizeof(init_stack) + (long)&init_stack, \ + .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \ .vm86_info = NULL, \ .sysenter_cs = __KERNEL_CS, \ .io_bitmap_ptr = NULL, \ @@ -929,7 +936,7 @@ static inline void spin_lock_prefetch(co */ #define INIT_TSS { \ .x86_tss = { \ - .sp0 = sizeof(init_stack) + (long)&init_stack, \ + .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \ .ss0 = __KERNEL_DS, \ .ss1 = __KERNEL_CS, \ .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \ @@ -940,11 +947,7 @@ static inline void spin_lock_prefetch(co extern unsigned long thread_saved_pc(struct task_struct *tsk); #define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long)) -#define KSTK_TOP(info) \ -({ \ - unsigned long *__ptr = (unsigned long *)(info); \ - (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \ -}) +#define KSTK_TOP(info) ((container_of(info, struct task_struct, tinfo))->thread.sp0) /* * The below -8 is to reserve 8 bytes on top of the ring0 stack. @@ -959,7 +962,7 @@ extern unsigned long thread_saved_pc(str #define task_pt_regs(task) \ ({ \ struct pt_regs *__regs__; \ - __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8); \ + __regs__ = (struct pt_regs *)((task)->thread.sp0); \ __regs__ - 1; \ }) @@ -969,13 +972,13 @@ extern unsigned long thread_saved_pc(str /* * User space process size. 47bits minus one guard page. */ -#define TASK_SIZE_MAX ((1UL << 47) - PAGE_SIZE) +#define TASK_SIZE_MAX ((1UL << TASK_SIZE_MAX_SHIFT) - PAGE_SIZE) /* This decides where the kernel will search for a free chunk of vm * space during mmap's. */ #define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? \ - 0xc0000000 : 0xFFFFe000) + 0xc0000000 : 0xFFFFf000) #define TASK_SIZE (test_thread_flag(TIF_IA32) ? \ IA32_PAGE_OFFSET : TASK_SIZE_MAX) @@ -986,11 +989,11 @@ extern unsigned long thread_saved_pc(str #define STACK_TOP_MAX TASK_SIZE_MAX #define INIT_THREAD { \ - .sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ + .sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \ } #define INIT_TSS { \ - .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ + .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \ } /* @@ -1012,6 +1015,10 @@ extern void start_thread(struct pt_regs */ #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3)) +#ifdef CONFIG_PAX_SEGMEXEC +#define SEGMEXEC_TASK_UNMAPPED_BASE (PAGE_ALIGN(SEGMEXEC_TASK_SIZE / 3)) +#endif + #define KSTK_EIP(task) (task_pt_regs(task)->ip) /* Get/set a process' ability to use the timestamp counter instruction */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/ptrace.h linux-2.6.32.59-pax/arch/x86/include/asm/ptrace.h --- linux-2.6.32.59/arch/x86/include/asm/ptrace.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/ptrace.h 2012-03-13 13:15:34.484098025 +0100 @@ -151,28 +151,29 @@ static inline unsigned long regs_return_ } /* - * user_mode_vm(regs) determines whether a register set came from user mode. + * user_mode(regs) determines whether a register set came from user mode. * This is true if V8086 mode was enabled OR if the register set was from * protected mode with RPL-3 CS value. This tricky test checks that with * one comparison. Many places in the kernel can bypass this full check - * if they have already ruled out V8086 mode, so user_mode(regs) can be used. + * if they have already ruled out V8086 mode, so user_mode_novm(regs) can + * be used. */ -static inline int user_mode(struct pt_regs *regs) +static inline int user_mode_novm(struct pt_regs *regs) { #ifdef CONFIG_X86_32 return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; #else - return !!(regs->cs & 3); + return !!(regs->cs & SEGMENT_RPL_MASK); #endif } -static inline int user_mode_vm(struct pt_regs *regs) +static inline int user_mode(struct pt_regs *regs) { #ifdef CONFIG_X86_32 return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >= USER_RPL; #else - return user_mode(regs); + return user_mode_novm(regs); #endif } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/reboot.h linux-2.6.32.59-pax/arch/x86/include/asm/reboot.h --- linux-2.6.32.59/arch/x86/include/asm/reboot.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/reboot.h 2012-09-11 21:08:00.552025077 +0200 @@ -6,19 +6,19 @@ struct pt_regs; struct machine_ops { - void (*restart)(char *cmd); - void (*halt)(void); - void (*power_off)(void); + void (* __noreturn restart)(char *cmd); + void (* __noreturn halt)(void); + void (* __noreturn power_off)(void); void (*shutdown)(void); void (*crash_shutdown)(struct pt_regs *); - void (*emergency_restart)(void); -}; + void (* __noreturn emergency_restart)(void); +} __no_const; extern struct machine_ops machine_ops; void native_machine_crash_shutdown(struct pt_regs *regs); void native_machine_shutdown(void); -void machine_real_restart(const unsigned char *code, int length); +void __noreturn machine_real_restart(const unsigned char *code, unsigned int length); typedef void (*nmi_shootdown_cb)(int, struct die_args*); void nmi_shootdown_cpus(nmi_shootdown_cb callback); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/rwsem.h linux-2.6.32.59-pax/arch/x86/include/asm/rwsem.h --- linux-2.6.32.59/arch/x86/include/asm/rwsem.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/rwsem.h 2012-03-13 13:15:34.484098025 +0100 @@ -118,6 +118,14 @@ static inline void __down_read(struct rw { asm volatile("# beginning down_read\n\t" LOCK_PREFIX _ASM_INC "(%1)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX _ASM_DEC "(%1)\n\t" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* adds 0x00000001, returns the old value */ " jns 1f\n" " call call_rwsem_down_read_failed\n" @@ -139,6 +147,14 @@ static inline int __down_read_trylock(st "1:\n\t" " mov %1,%2\n\t" " add %3,%2\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "sub %3,%2\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + " jle 2f\n\t" LOCK_PREFIX " cmpxchg %2,%0\n\t" " jnz 1b\n\t" @@ -160,6 +176,14 @@ static inline void __down_write_nested(s tmp = RWSEM_ACTIVE_WRITE_BIAS; asm volatile("# beginning down_write\n\t" LOCK_PREFIX " xadd %1,(%2)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %1,(%2)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* subtract 0x0000ffff, returns the old value */ " test %1,%1\n\t" /* was the count 0 before? */ @@ -198,6 +222,14 @@ static inline void __up_read(struct rw_s rwsem_count_t tmp = -RWSEM_ACTIVE_READ_BIAS; asm volatile("# beginning __up_read\n\t" LOCK_PREFIX " xadd %1,(%2)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %1,(%2)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* subtracts 1, returns the old value */ " jns 1f\n\t" " call call_rwsem_wake\n" @@ -216,6 +248,14 @@ static inline void __up_write(struct rw_ rwsem_count_t tmp; asm volatile("# beginning __up_write\n\t" LOCK_PREFIX " xadd %1,(%2)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %1,(%2)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* tries to transition 0xffff0001 -> 0x00000000 */ " jz 1f\n" @@ -234,6 +274,14 @@ static inline void __downgrade_write(str { asm volatile("# beginning __downgrade_write\n\t" LOCK_PREFIX _ASM_ADD "%2,(%1)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX _ASM_SUB "%2,(%1)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + /* * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386) * 0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64) @@ -253,7 +301,15 @@ static inline void __downgrade_write(str static inline void rwsem_atomic_add(rwsem_count_t delta, struct rw_semaphore *sem) { - asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0" + asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX _ASM_SUB "%1,%0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (sem->count) : "er" (delta)); } @@ -266,7 +322,15 @@ static inline rwsem_count_t rwsem_atomic { rwsem_count_t tmp = delta; - asm volatile(LOCK_PREFIX "xadd %0,%1" + asm volatile(LOCK_PREFIX "xadd %0,%1\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + "mov %0,%1\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+r" (tmp), "+m" (sem->count) : : "memory"); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/segment.h linux-2.6.32.59-pax/arch/x86/include/asm/segment.h --- linux-2.6.32.59/arch/x86/include/asm/segment.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/segment.h 2012-03-13 13:15:34.484098025 +0100 @@ -62,10 +62,15 @@ * 26 - ESPFIX small SS * 27 - per-cpu [ offset to per-cpu data area ] * 28 - stack_canary-20 [ for stack protector ] - * 29 - unused - * 30 - unused + * 29 - PCI BIOS CS + * 30 - PCI BIOS DS * 31 - TSS for double fault handler */ +#define GDT_ENTRY_KERNEXEC_EFI_CS (1) +#define GDT_ENTRY_KERNEXEC_EFI_DS (2) +#define __KERNEXEC_EFI_CS (GDT_ENTRY_KERNEXEC_EFI_CS*8) +#define __KERNEXEC_EFI_DS (GDT_ENTRY_KERNEXEC_EFI_DS*8) + #define GDT_ENTRY_TLS_MIN 6 #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) @@ -77,6 +82,8 @@ #define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0) +#define GDT_ENTRY_KERNEXEC_KERNEL_CS (4) + #define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1) #define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4) @@ -88,7 +95,7 @@ #define GDT_ENTRY_ESPFIX_SS (GDT_ENTRY_KERNEL_BASE + 14) #define __ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8) -#define GDT_ENTRY_PERCPU (GDT_ENTRY_KERNEL_BASE + 15) +#define GDT_ENTRY_PERCPU (GDT_ENTRY_KERNEL_BASE + 15) #ifdef CONFIG_SMP #define __KERNEL_PERCPU (GDT_ENTRY_PERCPU * 8) #else @@ -102,6 +109,12 @@ #define __KERNEL_STACK_CANARY 0 #endif +#define GDT_ENTRY_PCIBIOS_CS (GDT_ENTRY_KERNEL_BASE + 17) +#define __PCIBIOS_CS (GDT_ENTRY_PCIBIOS_CS * 8) + +#define GDT_ENTRY_PCIBIOS_DS (GDT_ENTRY_KERNEL_BASE + 18) +#define __PCIBIOS_DS (GDT_ENTRY_PCIBIOS_DS * 8) + #define GDT_ENTRY_DOUBLEFAULT_TSS 31 /* @@ -139,7 +152,7 @@ */ /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */ -#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8) +#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16) #else @@ -163,6 +176,8 @@ #define __USER32_CS (GDT_ENTRY_DEFAULT_USER32_CS * 8 + 3) #define __USER32_DS __USER_DS +#define GDT_ENTRY_KERNEXEC_KERNEL_CS 7 + #define GDT_ENTRY_TSS 8 /* needs two entries */ #define GDT_ENTRY_LDT 10 /* needs two entries */ #define GDT_ENTRY_TLS_MIN 12 @@ -183,6 +198,7 @@ #endif #define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8) +#define __KERNEXEC_KERNEL_CS (GDT_ENTRY_KERNEXEC_KERNEL_CS * 8) #define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8) #define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS* 8 + 3) #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS* 8 + 3) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/smp.h linux-2.6.32.59-pax/arch/x86/include/asm/smp.h --- linux-2.6.32.59/arch/x86/include/asm/smp.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/smp.h 2012-03-13 13:15:34.484098025 +0100 @@ -24,7 +24,7 @@ extern unsigned int num_processors; DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_map); DECLARE_PER_CPU(cpumask_var_t, cpu_core_map); DECLARE_PER_CPU(u16, cpu_llc_id); -DECLARE_PER_CPU(int, cpu_number); +DECLARE_PER_CPU(unsigned int, cpu_number); static inline struct cpumask *cpu_sibling_mask(int cpu) { @@ -60,7 +60,7 @@ struct smp_ops { void (*send_call_func_ipi)(const struct cpumask *mask); void (*send_call_func_single_ipi)(int cpu); -}; +} __no_const; /* Globals due to paravirt */ extern void set_cpu_sibling_map(int cpu); @@ -175,14 +175,8 @@ extern unsigned disabled_cpus __cpuinitd extern int safe_smp_processor_id(void); #elif defined(CONFIG_X86_64_SMP) -#define raw_smp_processor_id() (percpu_read(cpu_number)) - -#define stack_smp_processor_id() \ -({ \ - struct thread_info *ti; \ - __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \ - ti->cpu; \ -}) +#define raw_smp_processor_id() (percpu_read(cpu_number)) +#define stack_smp_processor_id() raw_smp_processor_id() #define safe_smp_processor_id() smp_processor_id() #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/spinlock.h linux-2.6.32.59-pax/arch/x86/include/asm/spinlock.h --- linux-2.6.32.59/arch/x86/include/asm/spinlock.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/spinlock.h 2012-03-13 13:15:34.488098024 +0100 @@ -249,6 +249,14 @@ static inline int __raw_write_can_lock(r static inline void __raw_read_lock(raw_rwlock_t *rw) { asm volatile(LOCK_PREFIX " subl $1,(%0)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX " addl $1,(%0)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + "jns 1f\n" "call __read_lock_failed\n\t" "1:\n" @@ -258,6 +266,14 @@ static inline void __raw_read_lock(raw_r static inline void __raw_write_lock(raw_rwlock_t *rw) { asm volatile(LOCK_PREFIX " subl %1,(%0)\n\t" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX " addl %1,(%0)\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + "jz 1f\n" "call __write_lock_failed\n\t" "1:\n" @@ -286,12 +302,29 @@ static inline int __raw_write_trylock(ra static inline void __raw_read_unlock(raw_rwlock_t *rw) { - asm volatile(LOCK_PREFIX "incl %0" :"+m" (rw->lock) : : "memory"); + asm volatile(LOCK_PREFIX "incl %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "decl %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + + :"+m" (rw->lock) : : "memory"); } static inline void __raw_write_unlock(raw_rwlock_t *rw) { - asm volatile(LOCK_PREFIX "addl %1, %0" + asm volatile(LOCK_PREFIX "addl %1, %0\n" + +#ifdef CONFIG_PAX_REFCOUNT + "jno 0f\n" + LOCK_PREFIX "subl %1, %0\n" + "int $4\n0:\n" + _ASM_EXTABLE(0b, 0b) +#endif + : "+m" (rw->lock) : "i" (RW_LOCK_BIAS) : "memory"); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/stackprotector.h linux-2.6.32.59-pax/arch/x86/include/asm/stackprotector.h --- linux-2.6.32.59/arch/x86/include/asm/stackprotector.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/stackprotector.h 2012-03-13 13:15:34.488098024 +0100 @@ -48,7 +48,7 @@ * head_32 for boot CPU and setup_per_cpu_areas() for others. */ #define GDT_STACK_CANARY_INIT \ - [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x18), + [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x17), /* * Initialize the stackprotector canary value. @@ -113,7 +113,7 @@ static inline void setup_stack_canary_se static inline void load_stack_canary_segment(void) { -#ifdef CONFIG_X86_32 +#if defined(CONFIG_X86_32) && !defined(CONFIG_PAX_MEMORY_UDEREF) asm volatile ("mov %0, %%gs" : : "r" (0)); #endif } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/system.h linux-2.6.32.59-pax/arch/x86/include/asm/system.h --- linux-2.6.32.59/arch/x86/include/asm/system.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/system.h 2012-03-13 13:15:34.488098024 +0100 @@ -132,7 +132,7 @@ do { \ "thread_return:\n\t" \ "movq "__percpu_arg([current_task])",%%rsi\n\t" \ __switch_canary \ - "movq %P[thread_info](%%rsi),%%r8\n\t" \ + "movq "__percpu_arg([thread_info])",%%r8\n\t" \ "movq %%rax,%%rdi\n\t" \ "testl %[_tif_fork],%P[ti_flags](%%r8)\n\t" \ "jnz ret_from_fork\n\t" \ @@ -143,7 +143,7 @@ do { \ [threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \ [ti_flags] "i" (offsetof(struct thread_info, flags)), \ [_tif_fork] "i" (_TIF_FORK), \ - [thread_info] "i" (offsetof(struct task_struct, stack)), \ + [thread_info] "m" (per_cpu_var(current_tinfo)), \ [current_task] "m" (per_cpu_var(current_task)) \ __switch_canary_iparam \ : "memory", "cc" __EXTRA_CLOBBER) @@ -200,7 +200,7 @@ static inline unsigned long get_limit(un { unsigned long __limit; asm("lsll %1,%0" : "=r" (__limit) : "r" (segment)); - return __limit + 1; + return __limit; } static inline void native_clts(void) @@ -340,12 +340,12 @@ void enable_hlt(void); void cpu_idle_wait(void); -extern unsigned long arch_align_stack(unsigned long sp); +#define arch_align_stack(x) ((x) & ~0xfUL) extern void free_init_pages(char *what, unsigned long begin, unsigned long end); void default_idle(void); -void stop_this_cpu(void *dummy); +void stop_this_cpu(void *dummy) __noreturn; /* * Force strict CPU ordering. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/thread_info.h linux-2.6.32.59-pax/arch/x86/include/asm/thread_info.h --- linux-2.6.32.59/arch/x86/include/asm/thread_info.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/thread_info.h 2012-03-13 13:15:34.488098024 +0100 @@ -10,6 +10,7 @@ #include #include #include +#include /* * low level task data that entry.S needs immediate access to @@ -24,7 +25,6 @@ struct exec_domain; #include struct thread_info { - struct task_struct *task; /* main task structure */ struct exec_domain *exec_domain; /* execution domain */ __u32 flags; /* low level flags */ __u32 status; /* thread synchronous flags */ @@ -34,18 +34,12 @@ struct thread_info { mm_segment_t addr_limit; struct restart_block restart_block; void __user *sysenter_return; -#ifdef CONFIG_X86_32 - unsigned long previous_esp; /* ESP of the previous stack in - case of nested (IRQ) stacks - */ - __u8 supervisor_stack[0]; -#endif + unsigned long lowest_stack; int uaccess_err; }; -#define INIT_THREAD_INFO(tsk) \ +#define INIT_THREAD_INFO \ { \ - .task = &tsk, \ .exec_domain = &default_exec_domain, \ .flags = 0, \ .cpu = 0, \ @@ -56,7 +50,7 @@ struct thread_info { }, \ } -#define init_thread_info (init_thread_union.thread_info) +#define init_thread_info (init_thread_union.stack) #define init_stack (init_thread_union.stack) #else /* !__ASSEMBLY__ */ @@ -163,6 +157,23 @@ struct thread_info { #define alloc_thread_info(tsk) \ ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER)) +#ifdef __ASSEMBLY__ +/* how to get the thread information struct from ASM */ +#define GET_THREAD_INFO(reg) \ + mov PER_CPU_VAR(current_tinfo), reg + +/* use this one if reg already contains %esp */ +#define GET_THREAD_INFO_WITH_ESP(reg) GET_THREAD_INFO(reg) +#else +/* how to get the thread information struct from C */ +DECLARE_PER_CPU(struct thread_info *, current_tinfo); + +static __always_inline struct thread_info *current_thread_info(void) +{ + return percpu_read_stable(current_tinfo); +} +#endif + #ifdef CONFIG_X86_32 #define STACK_WARN (THREAD_SIZE/8) @@ -173,35 +184,13 @@ struct thread_info { */ #ifndef __ASSEMBLY__ - /* how to get the current stack pointer from C */ register unsigned long current_stack_pointer asm("esp") __used; -/* how to get the thread information struct from C */ -static inline struct thread_info *current_thread_info(void) -{ - return (struct thread_info *) - (current_stack_pointer & ~(THREAD_SIZE - 1)); -} - -#else /* !__ASSEMBLY__ */ - -/* how to get the thread information struct from ASM */ -#define GET_THREAD_INFO(reg) \ - movl $-THREAD_SIZE, reg; \ - andl %esp, reg - -/* use this one if reg already contains %esp */ -#define GET_THREAD_INFO_WITH_ESP(reg) \ - andl $-THREAD_SIZE, reg - #endif #else /* X86_32 */ -#include -#define KERNEL_STACK_OFFSET (5*8) - /* * macros/functions for gaining access to the thread information structure * preempt_count needs to be 1 initially, until the scheduler is functional. @@ -209,21 +198,8 @@ static inline struct thread_info *curren #ifndef __ASSEMBLY__ DECLARE_PER_CPU(unsigned long, kernel_stack); -static inline struct thread_info *current_thread_info(void) -{ - struct thread_info *ti; - ti = (void *)(percpu_read_stable(kernel_stack) + - KERNEL_STACK_OFFSET - THREAD_SIZE); - return ti; -} - -#else /* !__ASSEMBLY__ */ - -/* how to get the thread information struct from ASM */ -#define GET_THREAD_INFO(reg) \ - movq PER_CPU_VAR(kernel_stack),reg ; \ - subq $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg - +/* how to get the current stack pointer from C */ +register unsigned long current_stack_pointer asm("rsp") __used; #endif #endif /* !X86_32 */ @@ -260,5 +236,16 @@ extern void arch_task_cache_init(void); extern void free_thread_info(struct thread_info *ti); extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); #define arch_task_cache_init arch_task_cache_init + +#define __HAVE_THREAD_FUNCTIONS +#define task_thread_info(task) (&(task)->tinfo) +#define task_stack_page(task) ((task)->stack) +#define setup_thread_stack(p, org) do {} while (0) +#define end_of_stack(p) ((unsigned long *)task_stack_page(p) + 1) + +#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR +extern struct task_struct *alloc_task_struct(void); +extern void free_task_struct(struct task_struct *); + #endif #endif /* _ASM_X86_THREAD_INFO_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/uaccess_32.h linux-2.6.32.59-pax/arch/x86/include/asm/uaccess_32.h --- linux-2.6.32.59/arch/x86/include/asm/uaccess_32.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/uaccess_32.h 2012-07-01 11:07:46.042370831 +0200 @@ -12,15 +12,15 @@ #include unsigned long __must_check __copy_to_user_ll - (void __user *to, const void *from, unsigned long n); + (void __user *to, const void *from, unsigned long n) __size_overflow(3); unsigned long __must_check __copy_from_user_ll - (void *to, const void __user *from, unsigned long n); + (void *to, const void __user *from, unsigned long n) __size_overflow(3); unsigned long __must_check __copy_from_user_ll_nozero - (void *to, const void __user *from, unsigned long n); + (void *to, const void __user *from, unsigned long n) __size_overflow(3); unsigned long __must_check __copy_from_user_ll_nocache - (void *to, const void __user *from, unsigned long n); + (void *to, const void __user *from, unsigned long n) __size_overflow(3); unsigned long __must_check __copy_from_user_ll_nocache_nozero - (void *to, const void __user *from, unsigned long n); + (void *to, const void __user *from, unsigned long n) __size_overflow(3); /** * __copy_to_user_inatomic: - Copy a block of data into user space, with less checking. @@ -44,6 +44,9 @@ unsigned long __must_check __copy_from_u static __always_inline unsigned long __must_check __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n) { + if ((long)n < 0) + return n; + if (__builtin_constant_p(n)) { unsigned long ret; @@ -62,6 +65,8 @@ __copy_to_user_inatomic(void __user *to, return ret; } } + if (!__builtin_constant_p(n)) + check_object_size(from, n, true); return __copy_to_user_ll(to, from, n); } @@ -83,12 +88,16 @@ static __always_inline unsigned long __m __copy_to_user(void __user *to, const void *from, unsigned long n) { might_fault(); + return __copy_to_user_inatomic(to, from, n); } static __always_inline unsigned long __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) { + if ((long)n < 0) + return n; + /* Avoid zeroing the tail if the copy fails.. * If 'n' is constant and 1, 2, or 4, we do still zero on a failure, * but as the zeroing behaviour is only significant when n is not @@ -138,6 +147,10 @@ static __always_inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) { might_fault(); + + if ((long)n < 0) + return n; + if (__builtin_constant_p(n)) { unsigned long ret; @@ -153,6 +166,8 @@ __copy_from_user(void *to, const void __ return ret; } } + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); return __copy_from_user_ll(to, from, n); } @@ -160,6 +175,10 @@ static __always_inline unsigned long __c const void __user *from, unsigned long n) { might_fault(); + + if ((long)n < 0) + return n; + if (__builtin_constant_p(n)) { unsigned long ret; @@ -182,14 +201,73 @@ static __always_inline unsigned long __copy_from_user_inatomic_nocache(void *to, const void __user *from, unsigned long n) { - return __copy_from_user_ll_nocache_nozero(to, from, n); + if ((long)n < 0) + return n; + + return __copy_from_user_ll_nocache_nozero(to, from, n); +} + +extern void copy_to_user_overflow(void) __compiletime_warning("copy_to_user() buffer size is not provably correct"); +extern void copy_from_user_overflow(void) __compiletime_warning("copy_from_user() buffer size is not provably correct"); + +/** + * copy_to_user: - Copy a block of data into user space. + * @to: Destination address, in user space. + * @from: Source address, in kernel space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from kernel space to user space. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + */ +static __always_inline unsigned long __must_check +copy_to_user(void __user *to, const void *from, unsigned long n) +{ + size_t sz = __compiletime_object_size(from); + + if (unlikely(sz != (size_t)-1 && sz < n)) + copy_to_user_overflow(); + else if (access_ok(VERIFY_WRITE, to, n)) + n = __copy_to_user(to, from, n); + return n; +} + +/** + * copy_from_user: - Copy a block of data from user space. + * @to: Destination address, in kernel space. + * @from: Source address, in user space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from user space to kernel space. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + * + * If some data could not be copied, this function will pad the copied + * data to the requested size using zero bytes. + */ +static __always_inline unsigned long __must_check +copy_from_user(void *to, const void __user *from, unsigned long n) +{ + size_t sz = __compiletime_object_size(to); + + if (unlikely(sz != (size_t)-1 && sz < n)) + copy_from_user_overflow(); + else if (access_ok(VERIFY_READ, from, n)) + n = __copy_from_user(to, from, n); + else if ((long)n > 0) { + if (!__builtin_constant_p(n)) + check_object_size(to, n, false); + memset(to, 0, n); + } + return n; } -unsigned long __must_check copy_to_user(void __user *to, - const void *from, unsigned long n); -unsigned long __must_check copy_from_user(void *to, - const void __user *from, - unsigned long n); long __must_check strncpy_from_user(char *dst, const char __user *src, long count); long __must_check __strncpy_from_user(char *dst, @@ -212,7 +290,7 @@ long __must_check __strncpy_from_user(ch #define strlen_user(str) strnlen_user(str, LONG_MAX) long strnlen_user(const char __user *str, long n); -unsigned long __must_check clear_user(void __user *mem, unsigned long len); -unsigned long __must_check __clear_user(void __user *mem, unsigned long len); +unsigned long __must_check clear_user(void __user *mem, unsigned long len) __size_overflow(2); +unsigned long __must_check __clear_user(void __user *mem, unsigned long len) __size_overflow(2); #endif /* _ASM_X86_UACCESS_32_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/uaccess_64.h linux-2.6.32.59-pax/arch/x86/include/asm/uaccess_64.h --- linux-2.6.32.59/arch/x86/include/asm/uaccess_64.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/uaccess_64.h 2012-07-01 11:07:44.602371302 +0200 @@ -9,6 +9,9 @@ #include #include #include +#include + +#define set_fs(x) (current_thread_info()->addr_limit = (x)) /* * Copy To/From Userspace @@ -16,116 +19,216 @@ /* Handles exceptions in both to and from, but doesn't do access_ok */ __must_check unsigned long -copy_user_generic(void *to, const void *from, unsigned len); +copy_user_generic(void *to, const void *from, unsigned long len) __size_overflow(3); __must_check unsigned long -copy_to_user(void __user *to, const void *from, unsigned len); -__must_check unsigned long -copy_from_user(void *to, const void __user *from, unsigned len); -__must_check unsigned long -copy_in_user(void __user *to, const void __user *from, unsigned len); +copy_in_user(void __user *to, const void __user *from, unsigned long len); + +extern void copy_to_user_overflow(void) __compiletime_warning("copy_to_user() buffer size is not provably correct"); +extern void copy_from_user_overflow(void) __compiletime_warning("copy_from_user() buffer size is not provably correct"); static __always_inline __must_check -int __copy_from_user(void *dst, const void __user *src, unsigned size) +unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long size) { - int ret = 0; + size_t sz = __compiletime_object_size(dst); + unsigned ret = 0; might_fault(); - if (!__builtin_constant_p(size)) - return copy_user_generic(dst, (__force void *)src, size); + + if (size > INT_MAX) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; +#endif + + if (unlikely(sz != (size_t)-1 && sz < size)) { + copy_from_user_overflow(); + return size; + } + + if (!__builtin_constant_p(size)) { + check_object_size(dst, size, false); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic(dst, (__force_kernel const void *)src, size); + } switch (size) { - case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src, + case 1:__get_user_asm(*(u8 *)dst, (const u8 __user *)src, ret, "b", "b", "=q", 1); return ret; - case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src, + case 2:__get_user_asm(*(u16 *)dst, (const u16 __user *)src, ret, "w", "w", "=r", 2); return ret; - case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src, + case 4:__get_user_asm(*(u32 *)dst, (const u32 __user *)src, ret, "l", "k", "=r", 4); return ret; - case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src, + case 8:__get_user_asm(*(u64 *)dst, (const u64 __user *)src, ret, "q", "", "=r", 8); return ret; case 10: - __get_user_asm(*(u64 *)dst, (u64 __user *)src, + __get_user_asm(*(u64 *)dst, (const u64 __user *)src, ret, "q", "", "=r", 10); if (unlikely(ret)) return ret; __get_user_asm(*(u16 *)(8 + (char *)dst), - (u16 __user *)(8 + (char __user *)src), + (const u16 __user *)(8 + (const char __user *)src), ret, "w", "w", "=r", 2); return ret; case 16: - __get_user_asm(*(u64 *)dst, (u64 __user *)src, + __get_user_asm(*(u64 *)dst, (const u64 __user *)src, ret, "q", "", "=r", 16); if (unlikely(ret)) return ret; __get_user_asm(*(u64 *)(8 + (char *)dst), - (u64 __user *)(8 + (char __user *)src), + (const u64 __user *)(8 + (const char __user *)src), ret, "q", "", "=r", 8); return ret; default: - return copy_user_generic(dst, (__force void *)src, size); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic(dst, (__force_kernel const void *)src, size); } } static __always_inline __must_check -int __copy_to_user(void __user *dst, const void *src, unsigned size) +unsigned long __copy_to_user(void __user *dst, const void *src, unsigned long size) { - int ret = 0; + size_t sz = __compiletime_object_size(dst); + unsigned ret = 0; might_fault(); - if (!__builtin_constant_p(size)) - return copy_user_generic((__force void *)dst, src, size); + + if (size > INT_MAX) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_WRITE, dst, size)) + return size; +#endif + + if (unlikely(sz != (size_t)-1 && sz < size)) { + copy_to_user_overflow(); + return size; + } + + if (!__builtin_constant_p(size)) { + check_object_size(src, size, true); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic((__force_kernel void *)dst, src, size); + } switch (size) { - case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst, + case 1:__put_user_asm(*(const u8 *)src, (u8 __user *)dst, ret, "b", "b", "iq", 1); return ret; - case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst, + case 2:__put_user_asm(*(const u16 *)src, (u16 __user *)dst, ret, "w", "w", "ir", 2); return ret; - case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst, + case 4:__put_user_asm(*(const u32 *)src, (u32 __user *)dst, ret, "l", "k", "ir", 4); return ret; - case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst, + case 8:__put_user_asm(*(const u64 *)src, (u64 __user *)dst, ret, "q", "", "er", 8); return ret; case 10: - __put_user_asm(*(u64 *)src, (u64 __user *)dst, + __put_user_asm(*(const u64 *)src, (u64 __user *)dst, ret, "q", "", "er", 10); if (unlikely(ret)) return ret; asm("":::"memory"); - __put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst, + __put_user_asm(4[(const u16 *)src], 4 + (u16 __user *)dst, ret, "w", "w", "ir", 2); return ret; case 16: - __put_user_asm(*(u64 *)src, (u64 __user *)dst, + __put_user_asm(*(const u64 *)src, (u64 __user *)dst, ret, "q", "", "er", 16); if (unlikely(ret)) return ret; asm("":::"memory"); - __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst, + __put_user_asm(1[(const u64 *)src], 1 + (u64 __user *)dst, ret, "q", "", "er", 8); return ret; default: - return copy_user_generic((__force void *)dst, src, size); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic((__force_kernel void *)dst, src, size); + } +} + +static __always_inline __must_check +unsigned long copy_to_user(void __user *to, const void *from, unsigned long len) +{ + if (access_ok(VERIFY_WRITE, to, len)) + len = __copy_to_user(to, from, len); + return len; +} + +static __always_inline __must_check +unsigned long copy_from_user(void *to, const void __user *from, unsigned long len) +{ + might_fault(); + + if (access_ok(VERIFY_READ, from, len)) + len = __copy_from_user(to, from, len); + else if (len < INT_MAX) { + if (!__builtin_constant_p(len)) + check_object_size(to, len, false); + memset(to, 0, len); } + return len; } static __always_inline __must_check -int __copy_in_user(void __user *dst, const void __user *src, unsigned size) +unsigned long __copy_in_user(void __user *dst, const void __user *src, unsigned long size) { - int ret = 0; + unsigned ret = 0; might_fault(); - if (!__builtin_constant_p(size)) - return copy_user_generic((__force void *)dst, - (__force void *)src, size); + + if (size > INT_MAX) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; + if (!__access_ok(VERIFY_WRITE, dst, size)) + return size; +#endif + + if (!__builtin_constant_p(size)) { + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic((__force_kernel void *)dst, + (__force_kernel const void *)src, size); + } switch (size) { case 1: { u8 tmp; - __get_user_asm(tmp, (u8 __user *)src, + __get_user_asm(tmp, (const u8 __user *)src, ret, "b", "b", "=q", 1); if (likely(!ret)) __put_user_asm(tmp, (u8 __user *)dst, @@ -134,7 +237,7 @@ int __copy_in_user(void __user *dst, con } case 2: { u16 tmp; - __get_user_asm(tmp, (u16 __user *)src, + __get_user_asm(tmp, (const u16 __user *)src, ret, "w", "w", "=r", 2); if (likely(!ret)) __put_user_asm(tmp, (u16 __user *)dst, @@ -144,7 +247,7 @@ int __copy_in_user(void __user *dst, con case 4: { u32 tmp; - __get_user_asm(tmp, (u32 __user *)src, + __get_user_asm(tmp, (const u32 __user *)src, ret, "l", "k", "=r", 4); if (likely(!ret)) __put_user_asm(tmp, (u32 __user *)dst, @@ -153,7 +256,7 @@ int __copy_in_user(void __user *dst, con } case 8: { u64 tmp; - __get_user_asm(tmp, (u64 __user *)src, + __get_user_asm(tmp, (const u64 __user *)src, ret, "q", "", "=r", 8); if (likely(!ret)) __put_user_asm(tmp, (u64 __user *)dst, @@ -161,8 +264,16 @@ int __copy_in_user(void __user *dst, con return ret; } default: - return copy_user_generic((__force void *)dst, - (__force void *)src, size); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic((__force_kernel void *)dst, + (__force_kernel const void *)src, size); } } @@ -173,36 +284,76 @@ __strncpy_from_user(char *dst, const cha __must_check long strnlen_user(const char __user *str, long n); __must_check long __strnlen_user(const char __user *str, long n); __must_check long strlen_user(const char __user *str); -__must_check unsigned long clear_user(void __user *mem, unsigned long len); -__must_check unsigned long __clear_user(void __user *mem, unsigned long len); +__must_check unsigned long clear_user(void __user *mem, unsigned long len) __size_overflow(2); +__must_check unsigned long __clear_user(void __user *mem, unsigned long len) __size_overflow(2); + +static __must_check __always_inline unsigned long +__copy_from_user_inatomic(void *dst, const void __user *src, unsigned long size) +{ + if (size > INT_MAX) + return size; -__must_check long __copy_from_user_inatomic(void *dst, const void __user *src, - unsigned size); +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; + + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; +#endif -static __must_check __always_inline int -__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size) + return copy_user_generic(dst, (__force_kernel const void *)src, size); +} + +static __must_check __always_inline unsigned long +__copy_to_user_inatomic(void __user *dst, const void *src, unsigned long size) { - return copy_user_generic((__force void *)dst, src, size); + if (size > INT_MAX) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_WRITE, dst, size)) + return size; + + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic((__force_kernel void *)dst, src, size); } -extern long __copy_user_nocache(void *dst, const void __user *src, - unsigned size, int zerorest); +extern unsigned long __copy_user_nocache(void *dst, const void __user *src, + unsigned long size, int zerorest) __size_overflow(3); -static inline int -__copy_from_user_nocache(void *dst, const void __user *src, unsigned size) +static inline unsigned long __copy_from_user_nocache(void *dst, const void __user *src, unsigned long size) { might_sleep(); + + if (size > INT_MAX) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; +#endif + return __copy_user_nocache(dst, src, size, 1); } -static inline int -__copy_from_user_inatomic_nocache(void *dst, const void __user *src, - unsigned size) +static inline unsigned long __copy_from_user_inatomic_nocache(void *dst, const void __user *src, + unsigned long size) { + if (size > INT_MAX) + return size; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if (!__access_ok(VERIFY_READ, src, size)) + return size; +#endif + return __copy_user_nocache(dst, src, size, 0); } -unsigned long -copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest); +extern unsigned long +copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) __size_overflow(3); #endif /* _ASM_X86_UACCESS_64_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/uaccess.h linux-2.6.32.59-pax/arch/x86/include/asm/uaccess.h --- linux-2.6.32.59/arch/x86/include/asm/uaccess.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/uaccess.h 2012-03-13 13:15:34.492098024 +0100 @@ -8,12 +8,15 @@ #include #include #include +#include #include #include #define VERIFY_READ 0 #define VERIFY_WRITE 1 +extern void check_object_size(const void *ptr, unsigned long n, bool to); + /* * The fs value determines whether argument validity checking should be * performed or not. If get_fs() == USER_DS, checking is performed, with @@ -29,7 +32,12 @@ #define get_ds() (KERNEL_DS) #define get_fs() (current_thread_info()->addr_limit) +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +void __set_fs(mm_segment_t x); +void set_fs(mm_segment_t x); +#else #define set_fs(x) (current_thread_info()->addr_limit = (x)) +#endif #define segment_eq(a, b) ((a).seg == (b).seg) @@ -77,7 +85,33 @@ * checks that the pointer is in the user space range - after calling * this function, memory access functions may still return -EFAULT. */ -#define access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0)) +#define __access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0)) +#define access_ok(type, addr, size) \ +({ \ + long __size = size; \ + unsigned long __addr = (unsigned long)addr; \ + unsigned long __addr_ao = __addr & PAGE_MASK; \ + unsigned long __end_ao = __addr + __size - 1; \ + bool __ret_ao = __range_not_ok(__addr, __size) == 0; \ + if (__ret_ao && unlikely((__end_ao ^ __addr_ao) & PAGE_MASK)) { \ + while(__addr_ao <= __end_ao) { \ + char __c_ao; \ + __addr_ao += PAGE_SIZE; \ + if (__size > PAGE_SIZE) \ + cond_resched(); \ + if (__get_user(__c_ao, (char __user *)__addr)) \ + break; \ + if (type != VERIFY_WRITE) { \ + __addr = __addr_ao; \ + continue; \ + } \ + if (__put_user(__c_ao, (char __user *)__addr)) \ + break; \ + __addr = __addr_ao; \ + } \ + } \ + __ret_ao; \ +}) /* * The exception table consists of pairs of addresses: the first is the @@ -183,12 +217,20 @@ extern int __get_user_bad(void); asm volatile("call __put_user_" #size : "=a" (__ret_pu) \ : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx") - +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __copyuser_seg "gs;" +#define __COPYUSER_SET_ES "pushl %%gs; popl %%es\n" +#define __COPYUSER_RESTORE_ES "pushl %%ss; popl %%es\n" +#else +#define __copyuser_seg +#define __COPYUSER_SET_ES +#define __COPYUSER_RESTORE_ES +#endif #ifdef CONFIG_X86_32 #define __put_user_asm_u64(x, addr, err, errret) \ - asm volatile("1: movl %%eax,0(%2)\n" \ - "2: movl %%edx,4(%2)\n" \ + asm volatile("1: "__copyuser_seg"movl %%eax,0(%2)\n" \ + "2: "__copyuser_seg"movl %%edx,4(%2)\n" \ "3:\n" \ ".section .fixup,\"ax\"\n" \ "4: movl %3,%0\n" \ @@ -200,8 +242,8 @@ extern int __get_user_bad(void); : "A" (x), "r" (addr), "i" (errret), "0" (err)) #define __put_user_asm_ex_u64(x, addr) \ - asm volatile("1: movl %%eax,0(%1)\n" \ - "2: movl %%edx,4(%1)\n" \ + asm volatile("1: "__copyuser_seg"movl %%eax,0(%1)\n" \ + "2: "__copyuser_seg"movl %%edx,4(%1)\n" \ "3:\n" \ _ASM_EXTABLE(1b, 2b - 1b) \ _ASM_EXTABLE(2b, 3b - 2b) \ @@ -253,7 +295,7 @@ extern void __put_user_8(void); __typeof__(*(ptr)) __pu_val; \ __chk_user_ptr(ptr); \ might_fault(); \ - __pu_val = x; \ + __pu_val = (x); \ switch (sizeof(*(ptr))) { \ case 1: \ __put_user_x(1, __pu_val, ptr, __ret_pu); \ @@ -374,7 +416,7 @@ do { \ } while (0) #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \ - asm volatile("1: mov"itype" %2,%"rtype"1\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %2,%"rtype"1\n"\ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3: mov %3,%0\n" \ @@ -382,7 +424,7 @@ do { \ " jmp 2b\n" \ ".previous\n" \ _ASM_EXTABLE(1b, 3b) \ - : "=r" (err), ltype(x) \ + : "=r" (err), ltype (x) \ : "m" (__m(addr)), "i" (errret), "0" (err)) #define __get_user_size_ex(x, ptr, size) \ @@ -407,7 +449,7 @@ do { \ } while (0) #define __get_user_asm_ex(x, addr, itype, rtype, ltype) \ - asm volatile("1: mov"itype" %1,%"rtype"0\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %1,%"rtype"0\n"\ "2:\n" \ _ASM_EXTABLE(1b, 2b - 1b) \ : ltype(x) : "m" (__m(addr))) @@ -424,13 +466,24 @@ do { \ int __gu_err; \ unsigned long __gu_val; \ __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \ - (x) = (__force __typeof__(*(ptr)))__gu_val; \ + (x) = (__typeof__(*(ptr)))__gu_val; \ __gu_err; \ }) /* FIXME: this hack is definitely wrong -AK */ struct __large_struct { unsigned long buf[100]; }; -#define __m(x) (*(struct __large_struct __user *)(x)) +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define ____m(x) \ +({ \ + unsigned long ____x = (unsigned long)(x); \ + if (____x < PAX_USER_SHADOW_BASE) \ + ____x += PAX_USER_SHADOW_BASE; \ + (void __user *)____x; \ +}) +#else +#define ____m(x) (x) +#endif +#define __m(x) (*(struct __large_struct __user *)____m(x)) /* * Tell gcc we read from memory instead of writing: this is because @@ -438,7 +491,7 @@ struct __large_struct { unsigned long bu * aliasing issues. */ #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \ - asm volatile("1: mov"itype" %"rtype"1,%2\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"1,%2\n"\ "2:\n" \ ".section .fixup,\"ax\"\n" \ "3: mov %3,%0\n" \ @@ -446,10 +499,10 @@ struct __large_struct { unsigned long bu ".previous\n" \ _ASM_EXTABLE(1b, 3b) \ : "=r"(err) \ - : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err)) + : ltype (x), "m" (__m(addr)), "i" (errret), "0" (err)) #define __put_user_asm_ex(x, addr, itype, rtype, ltype) \ - asm volatile("1: mov"itype" %"rtype"0,%1\n" \ + asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"0,%1\n"\ "2:\n" \ _ASM_EXTABLE(1b, 2b - 1b) \ : : ltype(x), "m" (__m(addr))) @@ -488,8 +541,12 @@ struct __large_struct { unsigned long bu * On error, the variable @x is set to zero. */ +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __get_user(x, ptr) get_user((x), (ptr)) +#else #define __get_user(x, ptr) \ __get_user_nocheck((x), (ptr), sizeof(*(ptr))) +#endif /** * __put_user: - Write a simple value into user space, with less checking. @@ -511,8 +568,12 @@ struct __large_struct { unsigned long bu * Returns zero on success, or -EFAULT on error. */ +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __put_user(x, ptr) put_user((x), (ptr)) +#else #define __put_user(x, ptr) \ __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) +#endif #define __get_user_unaligned __get_user #define __put_user_unaligned __put_user @@ -530,7 +591,7 @@ struct __large_struct { unsigned long bu #define get_user_ex(x, ptr) do { \ unsigned long __gue_val; \ __get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr)))); \ - (x) = (__force __typeof__(*(ptr)))__gue_val; \ + (x) = (__typeof__(*(ptr)))__gue_val; \ } while (0) #ifdef CONFIG_X86_WP_WORKS_OK @@ -567,6 +628,7 @@ extern struct movsl_mask { #define ARCH_HAS_NOCACHE_UACCESS 1 +#define ARCH_HAS_SORT_EXTABLE #ifdef CONFIG_X86_32 # include "uaccess_32.h" #else diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/vdso.h linux-2.6.32.59-pax/arch/x86/include/asm/vdso.h --- linux-2.6.32.59/arch/x86/include/asm/vdso.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/vdso.h 2012-03-13 13:15:34.492098024 +0100 @@ -25,7 +25,7 @@ extern const char VDSO32_PRELINK[]; #define VDSO32_SYMBOL(base, name) \ ({ \ extern const char VDSO32_##name[]; \ - (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \ + (void __user *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \ }) #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/vgtod.h linux-2.6.32.59-pax/arch/x86/include/asm/vgtod.h --- linux-2.6.32.59/arch/x86/include/asm/vgtod.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/vgtod.h 2012-03-13 13:15:34.492098024 +0100 @@ -14,6 +14,7 @@ struct vsyscall_gtod_data { int sysctl_enabled; struct timezone sys_tz; struct { /* extract of a clocksource struct */ + char name[8]; cycle_t (*vread)(void); cycle_t cycle_last; cycle_t mask; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/vmi.h linux-2.6.32.59-pax/arch/x86/include/asm/vmi.h --- linux-2.6.32.59/arch/x86/include/asm/vmi.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/vmi.h 2012-03-13 13:15:34.496098024 +0100 @@ -191,6 +191,7 @@ struct vrom_header { u8 reserved[96]; /* Reserved for headers */ char vmi_init[8]; /* VMI_Init jump point */ char get_reloc[8]; /* VMI_GetRelocationInfo jump point */ + char rom_data[8048]; /* rest of the option ROM */ } __attribute__((packed)); struct pnp_header { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/vmi_time.h linux-2.6.32.59-pax/arch/x86/include/asm/vmi_time.h --- linux-2.6.32.59/arch/x86/include/asm/vmi_time.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/vmi_time.h 2012-03-13 13:15:34.496098024 +0100 @@ -43,7 +43,7 @@ extern struct vmi_timer_ops { int (*wallclock_updated)(void); void (*set_alarm)(u32 flags, u64 expiry, u64 period); void (*cancel_alarm)(u32 flags); -} vmi_timer_ops; +} __no_const vmi_timer_ops; /* Prototypes */ extern void __init vmi_time_init(void); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/vsyscall.h linux-2.6.32.59-pax/arch/x86/include/asm/vsyscall.h --- linux-2.6.32.59/arch/x86/include/asm/vsyscall.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/vsyscall.h 2012-03-13 13:15:34.496098024 +0100 @@ -15,9 +15,10 @@ enum vsyscall_num { #ifdef __KERNEL__ #include +#include +#include #define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16))) -#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) /* Definitions for CONFIG_GENERIC_TIME definitions */ #define __section_vsyscall_gtod_data __attribute__ \ @@ -31,7 +32,6 @@ enum vsyscall_num { #define VGETCPU_LSL 2 extern int __vgetcpu_mode; -extern volatile unsigned long __jiffies; /* kernel space (writeable) */ extern int vgetcpu_mode; @@ -39,6 +39,9 @@ extern struct timezone sys_tz; extern void map_vsyscall(void); +extern int vgettimeofday(struct timeval * tv, struct timezone * tz); +extern time_t vtime(time_t *t); +extern long vgetcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache); #endif /* __KERNEL__ */ #endif /* _ASM_X86_VSYSCALL_H */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/x86_init.h linux-2.6.32.59-pax/arch/x86/include/asm/x86_init.h --- linux-2.6.32.59/arch/x86/include/asm/x86_init.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/x86_init.h 2012-03-13 13:15:34.496098024 +0100 @@ -28,7 +28,7 @@ struct x86_init_mpparse { void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name); void (*find_smp_config)(unsigned int reserve); void (*get_smp_config)(unsigned int early); -}; +} __no_const; /** * struct x86_init_resources - platform specific resource related ops @@ -42,7 +42,7 @@ struct x86_init_resources { void (*probe_roms)(void); void (*reserve_resources)(void); char *(*memory_setup)(void); -}; +} __no_const; /** * struct x86_init_irqs - platform specific interrupt setup @@ -55,7 +55,7 @@ struct x86_init_irqs { void (*pre_vector_init)(void); void (*intr_init)(void); void (*trap_init)(void); -}; +} __no_const; /** * struct x86_init_oem - oem platform specific customizing functions @@ -65,7 +65,7 @@ struct x86_init_irqs { struct x86_init_oem { void (*arch_setup)(void); void (*banner)(void); -}; +} __no_const; /** * struct x86_init_paging - platform specific paging functions @@ -75,7 +75,7 @@ struct x86_init_oem { struct x86_init_paging { void (*pagetable_setup_start)(pgd_t *base); void (*pagetable_setup_done)(pgd_t *base); -}; +} __no_const; /** * struct x86_init_timers - platform specific timer setup @@ -88,7 +88,7 @@ struct x86_init_timers { void (*setup_percpu_clockev)(void); void (*tsc_pre_init)(void); void (*timer_init)(void); -}; +} __no_const; /** * struct x86_init_ops - functions for platform specific setup @@ -101,7 +101,7 @@ struct x86_init_ops { struct x86_init_oem oem; struct x86_init_paging paging; struct x86_init_timers timers; -}; +} __no_const; /** * struct x86_cpuinit_ops - platform specific cpu hotplug setups @@ -109,7 +109,7 @@ struct x86_init_ops { */ struct x86_cpuinit_ops { void (*setup_percpu_clockev)(void); -}; +} __no_const; /** * struct x86_platform_ops - platform specific runtime functions @@ -121,7 +121,7 @@ struct x86_platform_ops { unsigned long (*calibrate_tsc)(void); unsigned long (*get_wallclock)(void); int (*set_wallclock)(unsigned long nowtime); -}; +} __no_const; extern struct x86_init_ops x86_init; extern struct x86_cpuinit_ops x86_cpuinit; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/include/asm/xsave.h linux-2.6.32.59-pax/arch/x86/include/asm/xsave.h --- linux-2.6.32.59/arch/x86/include/asm/xsave.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/include/asm/xsave.h 2012-03-13 13:15:34.496098024 +0100 @@ -56,6 +56,12 @@ static inline int xrstor_checking(struct static inline int xsave_user(struct xsave_struct __user *buf) { int err; + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)buf < PAX_USER_SHADOW_BASE) + buf = (struct xsave_struct __user *)((void __user*)buf + PAX_USER_SHADOW_BASE); +#endif + __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x27\n" "2:\n" ".section .fixup,\"ax\"\n" @@ -78,10 +84,15 @@ static inline int xsave_user(struct xsav static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask) { int err; - struct xsave_struct *xstate = ((__force struct xsave_struct *)buf); + struct xsave_struct *xstate = ((__force_kernel struct xsave_struct *)buf); u32 lmask = mask; u32 hmask = mask >> 32; +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if ((unsigned long)xstate < PAX_USER_SHADOW_BASE) + xstate = (struct xsave_struct *)((void *)xstate + PAX_USER_SHADOW_BASE); +#endif + __asm__ __volatile__("1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n" "2:\n" ".section .fixup,\"ax\"\n" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/Kconfig linux-2.6.32.59-pax/arch/x86/Kconfig --- linux-2.6.32.59/arch/x86/Kconfig 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/Kconfig 2012-03-13 13:15:34.500098024 +0100 @@ -223,7 +223,7 @@ config X86_TRAMPOLINE config X86_32_LAZY_GS def_bool y - depends on X86_32 && !CC_STACKPROTECTOR + depends on X86_32 && !CC_STACKPROTECTOR && !PAX_MEMORY_UDEREF config KTIME_SCALAR def_bool X86_32 @@ -1099,7 +1099,7 @@ config PAGE_OFFSET hex default 0xB0000000 if VMSPLIT_3G_OPT default 0x80000000 if VMSPLIT_2G - default 0x78000000 if VMSPLIT_2G_OPT + default 0x70000000 if VMSPLIT_2G_OPT default 0x40000000 if VMSPLIT_1G default 0xC0000000 depends on X86_32 @@ -1460,6 +1460,7 @@ config SECCOMP config CC_STACKPROTECTOR bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" + depends on X86_64 || !PAX_MEMORY_UDEREF ---help--- This option turns on the -fstack-protector GCC feature. This feature puts, at the beginning of functions, a canary value on @@ -1517,6 +1518,7 @@ config KEXEC_JUMP config PHYSICAL_START hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) default "0x1000000" + range 0x400000 0x40000000 ---help--- This gives the physical address where the kernel is loaded. @@ -1581,6 +1583,7 @@ config PHYSICAL_ALIGN hex prompt "Alignment value to which kernel should be aligned" if X86_32 default "0x1000000" + range 0x400000 0x1000000 if PAX_KERNEXEC range 0x2000 0x1000000 ---help--- This value puts the alignment restrictions on physical address @@ -1612,7 +1615,7 @@ config HOTPLUG_CPU Say N if you want to disable CPU hotplug. config COMPAT_VDSO - def_bool y + def_bool n prompt "Compat VDSO support" depends on X86_32 || IA32_EMULATION ---help--- diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/Kconfig.cpu linux-2.6.32.59-pax/arch/x86/Kconfig.cpu --- linux-2.6.32.59/arch/x86/Kconfig.cpu 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/Kconfig.cpu 2012-03-13 13:15:34.500098024 +0100 @@ -340,7 +340,7 @@ config X86_PPRO_FENCE config X86_F00F_BUG def_bool y - depends on M586MMX || M586TSC || M586 || M486 || M386 + depends on (M586MMX || M586TSC || M586 || M486 || M386) && !PAX_KERNEXEC config X86_WP_WORKS_OK def_bool y @@ -360,7 +360,7 @@ config X86_POPAD_OK config X86_ALIGNMENT_16 def_bool y - depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 + depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK8 || MK7 || MK6 || MCORE2 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 config X86_INTEL_USERCOPY def_bool y @@ -406,7 +406,7 @@ config X86_CMPXCHG64 # generates cmov. config X86_CMOV def_bool y - depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM) + depends on (MK8 || MK7 || MCORE2 || MPSC || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM) config X86_MINIMUM_CPU_FAMILY int diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/Kconfig.debug linux-2.6.32.59-pax/arch/x86/Kconfig.debug --- linux-2.6.32.59/arch/x86/Kconfig.debug 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/Kconfig.debug 2012-03-13 13:15:34.500098024 +0100 @@ -99,7 +99,7 @@ config X86_PTDUMP config DEBUG_RODATA bool "Write protect kernel read-only data structures" default y - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL && BROKEN ---help--- Mark the kernel read-only data as write-protected in the pagetables, in order to catch accidental (and incorrect) writes to such const diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/acpi/realmode/Makefile linux-2.6.32.59-pax/arch/x86/kernel/acpi/realmode/Makefile --- linux-2.6.32.59/arch/x86/kernel/acpi/realmode/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/acpi/realmode/Makefile 2012-09-26 14:56:12.232343871 +0200 @@ -41,6 +41,9 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os $(call cc-option, -fno-stack-protector) \ $(call cc-option, -mpreferred-stack-boundary=2) KBUILD_CFLAGS += $(call cc-option, -m32) +ifdef CONSTIFY_PLUGIN +KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify +endif KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ GCOV_PROFILE := n diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/acpi/realmode/wakeup.S linux-2.6.32.59-pax/arch/x86/kernel/acpi/realmode/wakeup.S --- linux-2.6.32.59/arch/x86/kernel/acpi/realmode/wakeup.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/acpi/realmode/wakeup.S 2012-03-13 13:15:34.504098024 +0100 @@ -104,7 +104,7 @@ _start: movl %eax, %ecx orl %edx, %ecx jz 1f - movl $0xc0000080, %ecx + mov $MSR_EFER, %ecx wrmsr 1: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/acpi/sleep.c linux-2.6.32.59-pax/arch/x86/kernel/acpi/sleep.c --- linux-2.6.32.59/arch/x86/kernel/acpi/sleep.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/acpi/sleep.c 2012-03-13 13:15:34.504098024 +0100 @@ -11,11 +11,12 @@ #include #include #include +#include #include "realmode/wakeup.h" #include "sleep.h" -unsigned long acpi_wakeup_address; +unsigned long acpi_wakeup_address = 0x2000; unsigned long acpi_realmode_flags; /* address in low memory of the wakeup routine. */ @@ -99,8 +100,12 @@ int acpi_save_state_mem(void) header->trampoline_segment = setup_trampoline() >> 4; #ifdef CONFIG_SMP stack_start.sp = temp_stack + sizeof(temp_stack); + + pax_open_kernel(); early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(smp_processor_id()); + pax_close_kernel(); + initial_gs = per_cpu_offset(smp_processor_id()); #endif initial_code = (unsigned long)wakeup_long64; @@ -134,14 +139,8 @@ void __init acpi_reserve_bootmem(void) return; } - acpi_realmode = (unsigned long)alloc_bootmem_low(WAKEUP_SIZE); - - if (!acpi_realmode) { - printk(KERN_ERR "ACPI: Cannot allocate lowmem, S3 disabled.\n"); - return; - } - - acpi_wakeup_address = virt_to_phys((void *)acpi_realmode); + reserve_early(acpi_wakeup_address, acpi_wakeup_address + WAKEUP_SIZE, "ACPI Wakeup Code"); + acpi_realmode = (unsigned long)__va(acpi_wakeup_address);; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/acpi/wakeup_32.S linux-2.6.32.59-pax/arch/x86/kernel/acpi/wakeup_32.S --- linux-2.6.32.59/arch/x86/kernel/acpi/wakeup_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/acpi/wakeup_32.S 2012-03-13 13:15:34.504098024 +0100 @@ -30,13 +30,11 @@ wakeup_pmode_return: # and restore the stack ... but you need gdt for this to work movl saved_context_esp, %esp - movl %cs:saved_magic, %eax - cmpl $0x12345678, %eax + cmpl $0x12345678, saved_magic jne bogus_magic # jump to place where we left off - movl saved_eip, %eax - jmp *%eax + jmp *(saved_eip) bogus_magic: jmp bogus_magic diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/alternative.c linux-2.6.32.59-pax/arch/x86/kernel/alternative.c --- linux-2.6.32.59/arch/x86/kernel/alternative.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/alternative.c 2012-03-13 13:15:34.504098024 +0100 @@ -407,7 +407,7 @@ void __init_or_module apply_paravirt(str BUG_ON(p->len > MAX_PATCH_LEN); /* prep the buffer with the original instructions */ - memcpy(insnbuf, p->instr, p->len); + memcpy(insnbuf, ktla_ktva(p->instr), p->len); used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf, (unsigned long)p->instr, p->len); @@ -475,7 +475,7 @@ void __init alternative_instructions(voi if (smp_alt_once) free_init_pages("SMP alternatives", (unsigned long)__smp_locks, - (unsigned long)__smp_locks_end); + PAGE_ALIGN((unsigned long)__smp_locks_end)); restart_nmi(); } @@ -492,13 +492,17 @@ void __init alternative_instructions(voi * instructions. And on the local CPU you need to be protected again NMI or MCE * handlers seeing an inconsistent instruction while you patch. */ -static void *__init_or_module text_poke_early(void *addr, const void *opcode, +static void *__kprobes text_poke_early(void *addr, const void *opcode, size_t len) { unsigned long flags; local_irq_save(flags); - memcpy(addr, opcode, len); + + pax_open_kernel(); + memcpy(ktla_ktva(addr), opcode, len); sync_core(); + pax_close_kernel(); + local_irq_restore(flags); /* Could also do a CLFLUSH here to speed up CPU recovery; but that causes hangs on some VIA CPUs. */ @@ -520,35 +524,21 @@ static void *__init_or_module text_poke_ */ void *__kprobes text_poke(void *addr, const void *opcode, size_t len) { - unsigned long flags; - char *vaddr; + unsigned char *vaddr = ktla_ktva(addr); struct page *pages[2]; - int i; + size_t i; if (!core_kernel_text((unsigned long)addr)) { - pages[0] = vmalloc_to_page(addr); - pages[1] = vmalloc_to_page(addr + PAGE_SIZE); + pages[0] = vmalloc_to_page(vaddr); + pages[1] = vmalloc_to_page(vaddr + PAGE_SIZE); } else { - pages[0] = virt_to_page(addr); + pages[0] = virt_to_page(vaddr); WARN_ON(!PageReserved(pages[0])); - pages[1] = virt_to_page(addr + PAGE_SIZE); + pages[1] = virt_to_page(vaddr + PAGE_SIZE); } BUG_ON(!pages[0]); - local_irq_save(flags); - set_fixmap(FIX_TEXT_POKE0, page_to_phys(pages[0])); - if (pages[1]) - set_fixmap(FIX_TEXT_POKE1, page_to_phys(pages[1])); - vaddr = (char *)fix_to_virt(FIX_TEXT_POKE0); - memcpy(&vaddr[(unsigned long)addr & ~PAGE_MASK], opcode, len); - clear_fixmap(FIX_TEXT_POKE0); - if (pages[1]) - clear_fixmap(FIX_TEXT_POKE1); - local_flush_tlb(); - sync_core(); - /* Could also do a CLFLUSH here to speed up CPU recovery; but - that causes hangs on some VIA CPUs. */ + text_poke_early(addr, opcode, len); for (i = 0; i < len; i++) - BUG_ON(((char *)addr)[i] != ((char *)opcode)[i]); - local_irq_restore(flags); + BUG_ON((vaddr)[i] != ((const unsigned char *)opcode)[i]); return addr; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/apic/apic.c linux-2.6.32.59-pax/arch/x86/kernel/apic/apic.c --- linux-2.6.32.59/arch/x86/kernel/apic/apic.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/apic/apic.c 2012-03-13 13:15:34.508098023 +0100 @@ -170,7 +170,7 @@ int first_system_vector = 0xfe; /* * Debug level, exported for io_apic.c */ -unsigned int apic_verbosity; +int apic_verbosity; int pic_mode; @@ -1794,7 +1794,7 @@ void smp_error_interrupt(struct pt_regs apic_write(APIC_ESR, 0); v1 = apic_read(APIC_ESR); ack_APIC_irq(); - atomic_inc(&irq_err_count); + atomic_inc_unchecked(&irq_err_count); /* * Here is what the APIC error bits mean: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/apic/io_apic.c linux-2.6.32.59-pax/arch/x86/kernel/apic/io_apic.c --- linux-2.6.32.59/arch/x86/kernel/apic/io_apic.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/apic/io_apic.c 2012-03-13 13:15:34.508098023 +0100 @@ -716,7 +716,7 @@ struct IO_APIC_route_entry **alloc_ioapi ioapic_entries = kzalloc(sizeof(*ioapic_entries) * nr_ioapics, GFP_ATOMIC); if (!ioapic_entries) - return 0; + return NULL; for (apic = 0; apic < nr_ioapics; apic++) { ioapic_entries[apic] = @@ -733,7 +733,7 @@ nomem: kfree(ioapic_entries[apic]); kfree(ioapic_entries); - return 0; + return NULL; } /* @@ -1150,7 +1150,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, } EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector); -void lock_vector_lock(void) +void lock_vector_lock(void) __acquires(vector_lock) { /* Used to the online set of cpus does not change * during assign_irq_vector. @@ -1158,7 +1158,7 @@ void lock_vector_lock(void) spin_lock(&vector_lock); } -void unlock_vector_lock(void) +void unlock_vector_lock(void) __releases(vector_lock) { spin_unlock(&vector_lock); } @@ -2542,7 +2542,7 @@ static void ack_apic_edge(unsigned int i ack_APIC_irq(); } -atomic_t irq_mis_count; +atomic_unchecked_t irq_mis_count; static void ack_apic_level(unsigned int irq) { @@ -2626,7 +2626,7 @@ static void ack_apic_level(unsigned int /* Tail end of version 0x11 I/O APIC bug workaround */ if (!(v & (1 << (i & 0x1f)))) { - atomic_inc(&irq_mis_count); + atomic_inc_unchecked(&irq_mis_count); spin_lock(&ioapic_lock); __mask_and_edge_IO_APIC_irq(cfg); __unmask_and_level_IO_APIC_irq(cfg); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/apm_32.c linux-2.6.32.59-pax/arch/x86/kernel/apm_32.c --- linux-2.6.32.59/arch/x86/kernel/apm_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/apm_32.c 2012-03-13 13:15:34.512098023 +0100 @@ -410,7 +410,7 @@ static DEFINE_SPINLOCK(user_list_lock); * This is for buggy BIOS's that refer to (real mode) segment 0x40 * even though they are called in protected mode. */ -static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092, +static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093, (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1); static const char driver_version[] = "1.16ac"; /* no spaces */ @@ -588,7 +588,10 @@ static long __apm_bios_call(void *_call) BUG_ON(cpu != 0); gdt = get_cpu_gdt_table(cpu); save_desc_40 = gdt[0x40 / 8]; + + pax_open_kernel(); gdt[0x40 / 8] = bad_bios_desc; + pax_close_kernel(); apm_irq_save(flags); APM_DO_SAVE_SEGS; @@ -597,7 +600,11 @@ static long __apm_bios_call(void *_call) &call->esi); APM_DO_RESTORE_SEGS; apm_irq_restore(flags); + + pax_open_kernel(); gdt[0x40 / 8] = save_desc_40; + pax_close_kernel(); + put_cpu(); return call->eax & 0xff; @@ -664,7 +671,10 @@ static long __apm_bios_call_simple(void BUG_ON(cpu != 0); gdt = get_cpu_gdt_table(cpu); save_desc_40 = gdt[0x40 / 8]; + + pax_open_kernel(); gdt[0x40 / 8] = bad_bios_desc; + pax_close_kernel(); apm_irq_save(flags); APM_DO_SAVE_SEGS; @@ -672,7 +682,11 @@ static long __apm_bios_call_simple(void &call->eax); APM_DO_RESTORE_SEGS; apm_irq_restore(flags); + + pax_open_kernel(); gdt[0x40 / 8] = save_desc_40; + pax_close_kernel(); + put_cpu(); return error; } @@ -975,7 +989,7 @@ recalc: static void apm_power_off(void) { - unsigned char po_bios_call[] = { + const unsigned char po_bios_call[] = { 0xb8, 0x00, 0x10, /* movw $0x1000,ax */ 0x8e, 0xd0, /* movw ax,ss */ 0xbc, 0x00, 0xf0, /* movw $0xf000,sp */ @@ -2357,12 +2371,15 @@ static int __init apm_init(void) * code to that CPU. */ gdt = get_cpu_gdt_table(0); + + pax_open_kernel(); set_desc_base(&gdt[APM_CS >> 3], (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4)); set_desc_base(&gdt[APM_CS_16 >> 3], (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4)); set_desc_base(&gdt[APM_DS >> 3], (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4)); + pax_close_kernel(); proc_create("apm", 0, NULL, &apm_file_ops); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/asm-offsets_32.c linux-2.6.32.59-pax/arch/x86/kernel/asm-offsets_32.c --- linux-2.6.32.59/arch/x86/kernel/asm-offsets_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/asm-offsets_32.c 2012-03-13 13:15:34.512098023 +0100 @@ -51,7 +51,6 @@ void foo(void) OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id); BLANK(); - OFFSET(TI_task, thread_info, task); OFFSET(TI_exec_domain, thread_info, exec_domain); OFFSET(TI_flags, thread_info, flags); OFFSET(TI_status, thread_info, status); @@ -60,6 +59,8 @@ void foo(void) OFFSET(TI_restart_block, thread_info, restart_block); OFFSET(TI_sysenter_return, thread_info, sysenter_return); OFFSET(TI_cpu, thread_info, cpu); + OFFSET(TI_lowest_stack, thread_info, lowest_stack); + DEFINE(TI_task_thread_sp0, offsetof(struct task_struct, thread.sp0) - offsetof(struct task_struct, tinfo)); BLANK(); OFFSET(GDS_size, desc_ptr, size); @@ -99,6 +100,7 @@ void foo(void) DEFINE(PAGE_SIZE_asm, PAGE_SIZE); DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT); + DEFINE(THREAD_SIZE_asm, THREAD_SIZE); DEFINE(PTRS_PER_PTE, PTRS_PER_PTE); DEFINE(PTRS_PER_PMD, PTRS_PER_PMD); DEFINE(PTRS_PER_PGD, PTRS_PER_PGD); @@ -115,6 +117,11 @@ void foo(void) OFFSET(PV_CPU_iret, pv_cpu_ops, iret); OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit); OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0); + +#ifdef CONFIG_PAX_KERNEXEC + OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0); +#endif + #endif #ifdef CONFIG_XEN diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/asm-offsets_64.c linux-2.6.32.59-pax/arch/x86/kernel/asm-offsets_64.c --- linux-2.6.32.59/arch/x86/kernel/asm-offsets_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/asm-offsets_64.c 2012-03-13 13:15:34.512098023 +0100 @@ -44,6 +44,8 @@ int main(void) ENTRY(addr_limit); ENTRY(preempt_count); ENTRY(status); + ENTRY(lowest_stack); + DEFINE(TI_task_thread_sp0, offsetof(struct task_struct, thread.sp0) - offsetof(struct task_struct, tinfo)); #ifdef CONFIG_IA32_EMULATION ENTRY(sysenter_return); #endif @@ -63,6 +65,18 @@ int main(void) OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit); OFFSET(PV_CPU_swapgs, pv_cpu_ops, swapgs); OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2); + +#ifdef CONFIG_PAX_KERNEXEC + OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0); + OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0); +#endif + +#ifdef CONFIG_PAX_MEMORY_UDEREF + OFFSET(PV_MMU_read_cr3, pv_mmu_ops, read_cr3); + OFFSET(PV_MMU_write_cr3, pv_mmu_ops, write_cr3); + OFFSET(PV_MMU_set_pgd_batched, pv_mmu_ops, set_pgd_batched); +#endif + #endif @@ -115,6 +129,7 @@ int main(void) ENTRY(cr8); BLANK(); #undef ENTRY + DEFINE(TSS_size, sizeof(struct tss_struct)); DEFINE(TSS_ist, offsetof(struct tss_struct, x86_tss.ist)); BLANK(); DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx)); @@ -130,6 +145,7 @@ int main(void) BLANK(); DEFINE(PAGE_SIZE_asm, PAGE_SIZE); + DEFINE(THREAD_SIZE_asm, THREAD_SIZE); #ifdef CONFIG_XEN BLANK(); OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/amd.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/amd.c --- linux-2.6.32.59/arch/x86/kernel/cpu/amd.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/amd.c 2012-03-13 13:15:34.512098023 +0100 @@ -602,7 +602,7 @@ static unsigned int __cpuinit amd_size_c unsigned int size) { /* AMD errata T13 (order #21922) */ - if ((c->x86 == 6)) { + if (c->x86 == 6) { /* Duron Rev A0 */ if (c->x86_model == 3 && c->x86_mask == 0) size = 64; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/common.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/common.c --- linux-2.6.32.59/arch/x86/kernel/cpu/common.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/common.c 2012-03-13 13:15:34.516098023 +0100 @@ -83,60 +83,6 @@ static const struct cpu_dev __cpuinitcon static const struct cpu_dev *this_cpu __cpuinitdata = &default_cpu; -DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = { -#ifdef CONFIG_X86_64 - /* - * We need valid kernel segments for data and code in long mode too - * IRET will check the segment types kkeil 2000/10/28 - * Also sysret mandates a special GDT layout - * - * TLS descriptors are currently at a different place compared to i386. - * Hopefully nobody expects them at a fixed place (Wine?) - */ - [GDT_ENTRY_KERNEL32_CS] = GDT_ENTRY_INIT(0xc09b, 0, 0xfffff), - [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xa09b, 0, 0xfffff), - [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc093, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER32_CS] = GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff), -#else - [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xc09a, 0, 0xfffff), - [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff), - [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff), - /* - * Segments used for calling PnP BIOS have byte granularity. - * They code segments and data segments have fixed 64k limits, - * the transfer segment sizes are set at run time. - */ - /* 32-bit code */ - [GDT_ENTRY_PNPBIOS_CS32] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), - /* 16-bit code */ - [GDT_ENTRY_PNPBIOS_CS16] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), - /* 16-bit data */ - [GDT_ENTRY_PNPBIOS_DS] = GDT_ENTRY_INIT(0x0092, 0, 0xffff), - /* 16-bit data */ - [GDT_ENTRY_PNPBIOS_TS1] = GDT_ENTRY_INIT(0x0092, 0, 0), - /* 16-bit data */ - [GDT_ENTRY_PNPBIOS_TS2] = GDT_ENTRY_INIT(0x0092, 0, 0), - /* - * The APM segments have byte granularity and their bases - * are set at run time. All have 64k limits. - */ - /* 32-bit code */ - [GDT_ENTRY_APMBIOS_BASE] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), - /* 16-bit code */ - [GDT_ENTRY_APMBIOS_BASE+1] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), - /* data */ - [GDT_ENTRY_APMBIOS_BASE+2] = GDT_ENTRY_INIT(0x4092, 0, 0xffff), - - [GDT_ENTRY_ESPFIX_SS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), - [GDT_ENTRY_PERCPU] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), - GDT_STACK_CANARY_INIT -#endif -} }; -EXPORT_PER_CPU_SYMBOL_GPL(gdt_page); - static int __init x86_xsave_setup(char *s) { setup_clear_cpu_cap(X86_FEATURE_XSAVE); @@ -344,7 +290,7 @@ void switch_to_new_gdt(int cpu) { struct desc_ptr gdt_descr; - gdt_descr.address = (long)get_cpu_gdt_table(cpu); + gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); /* Reload the per-cpu base */ @@ -798,6 +744,10 @@ static void __cpuinit identify_cpu(struc /* Filter out anything that depends on CPUID levels we don't have */ filter_cpuid_features(c, true); +#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)) + setup_clear_cpu_cap(X86_FEATURE_SEP); +#endif + /* If the model name is still unset, do table lookup. */ if (!c->x86_model_id[0]) { const char *p; @@ -980,6 +930,9 @@ static __init int setup_disablecpuid(cha } __setup("clearcpuid=", setup_disablecpuid); +DEFINE_PER_CPU(struct thread_info *, current_tinfo) = &init_task.tinfo; +EXPORT_PER_CPU_SYMBOL(current_tinfo); + #ifdef CONFIG_X86_64 struct desc_ptr idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) idt_table }; @@ -995,7 +948,7 @@ DEFINE_PER_CPU(struct task_struct *, cur EXPORT_PER_CPU_SYMBOL(current_task); DEFINE_PER_CPU(unsigned long, kernel_stack) = - (unsigned long)&init_thread_union - KERNEL_STACK_OFFSET + THREAD_SIZE; + (unsigned long)&init_thread_union - 16 + THREAD_SIZE; EXPORT_PER_CPU_SYMBOL(kernel_stack); DEFINE_PER_CPU(char *, irq_stack_ptr) = @@ -1060,7 +1013,7 @@ struct pt_regs * __cpuinit idle_regs(str { memset(regs, 0, sizeof(struct pt_regs)); regs->fs = __KERNEL_PERCPU; - regs->gs = __KERNEL_STACK_CANARY; + savesegment(gs, regs->gs); return regs; } @@ -1101,7 +1054,7 @@ void __cpuinit cpu_init(void) int i; cpu = stack_smp_processor_id(); - t = &per_cpu(init_tss, cpu); + t = init_tss + cpu; orig_ist = &per_cpu(orig_ist, cpu); #ifdef CONFIG_NUMA @@ -1127,7 +1080,7 @@ void __cpuinit cpu_init(void) switch_to_new_gdt(cpu); loadsegment(fs, 0); - load_idt((const struct desc_ptr *)&idt_descr); + load_idt(&idt_descr); memset(me->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8); syscall_init(); @@ -1136,7 +1089,6 @@ void __cpuinit cpu_init(void) wrmsrl(MSR_KERNEL_GS_BASE, 0); barrier(); - check_efer(); if (cpu != 0) enable_x2apic(); @@ -1199,7 +1151,7 @@ void __cpuinit cpu_init(void) { int cpu = smp_processor_id(); struct task_struct *curr = current; - struct tss_struct *t = &per_cpu(init_tss, cpu); + struct tss_struct *t = init_tss + cpu; struct thread_struct *thread = &curr->thread; if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/intel.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/intel.c --- linux-2.6.32.59/arch/x86/kernel/cpu/intel.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/intel.c 2012-03-13 13:15:34.516098023 +0100 @@ -162,7 +162,7 @@ static void __cpuinit trap_init_f00f_bug * Update the IDT descriptor and reload the IDT so that * it uses the read-only mapped virtual address. */ - idt_descr.address = fix_to_virt(FIX_F00F_IDT); + idt_descr.address = (struct desc_struct *)fix_to_virt(FIX_F00F_IDT); load_idt(&idt_descr); } #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/Makefile linux-2.6.32.59-pax/arch/x86/kernel/cpu/Makefile --- linux-2.6.32.59/arch/x86/kernel/cpu/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/Makefile 2012-03-13 13:15:34.516098023 +0100 @@ -7,10 +7,6 @@ ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_common.o = -pg endif -# Make sure load_percpu_segment has no stackprotector -nostackp := $(call cc-option, -fno-stack-protector) -CFLAGS_common.o := $(nostackp) - obj-y := intel_cacheinfo.o addon_cpuid_features.o obj-y += proc.o capflags.o powerflags.o common.o obj-y += vmware.o hypervisor.o sched.o diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/mce.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/mce.c --- linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/mce.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/mce.c 2012-03-13 13:15:34.516098023 +0100 @@ -43,6 +43,7 @@ #include #include #include +#include #include "mce-internal.h" @@ -187,7 +188,7 @@ static void print_mce(struct mce *m) !(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "", m->cs, m->ip); - if (m->cs == __KERNEL_CS) + if (m->cs == __KERNEL_CS || m->cs == __KERNEXEC_KERNEL_CS) print_symbol("{%s}", m->ip); pr_cont("\n"); } @@ -221,10 +222,10 @@ static void print_mce_tail(void) #define PANIC_TIMEOUT 5 /* 5 seconds */ -static atomic_t mce_paniced; +static atomic_unchecked_t mce_paniced; static int fake_panic; -static atomic_t mce_fake_paniced; +static atomic_unchecked_t mce_fake_paniced; /* Panic in progress. Enable interrupts and wait for final IPI */ static void wait_for_panic(void) @@ -248,7 +249,7 @@ static void mce_panic(char *msg, struct /* * Make sure only one CPU runs in machine check panic */ - if (atomic_inc_return(&mce_paniced) > 1) + if (atomic_inc_return_unchecked(&mce_paniced) > 1) wait_for_panic(); barrier(); @@ -256,7 +257,7 @@ static void mce_panic(char *msg, struct console_verbose(); } else { /* Don't log too much for fake panic */ - if (atomic_inc_return(&mce_fake_paniced) > 1) + if (atomic_inc_return_unchecked(&mce_fake_paniced) > 1) return; } print_mce_head(); @@ -616,7 +617,7 @@ static int mce_timed_out(u64 *t) * might have been modified by someone else. */ rmb(); - if (atomic_read(&mce_paniced)) + if (atomic_read_unchecked(&mce_paniced)) wait_for_panic(); if (!monarch_timeout) goto out; @@ -1394,7 +1395,7 @@ static void unexpected_machine_check(str } /* Call the installed machine check handler for this CPU setup. */ -void (*machine_check_vector)(struct pt_regs *, long error_code) = +void (*machine_check_vector)(struct pt_regs *, long error_code) __read_only = unexpected_machine_check; /* @@ -1416,7 +1417,9 @@ void __cpuinit mcheck_init(struct cpuinf return; } + pax_open_kernel(); machine_check_vector = do_machine_check; + pax_close_kernel(); mce_init(); mce_cpu_features(c); @@ -1429,14 +1432,14 @@ void __cpuinit mcheck_init(struct cpuinf */ static DEFINE_SPINLOCK(mce_state_lock); -static int open_count; /* #times opened */ +static local_t open_count; /* #times opened */ static int open_exclu; /* already open exclusive? */ static int mce_open(struct inode *inode, struct file *file) { spin_lock(&mce_state_lock); - if (open_exclu || (open_count && (file->f_flags & O_EXCL))) { + if (open_exclu || (local_read(&open_count) && (file->f_flags & O_EXCL))) { spin_unlock(&mce_state_lock); return -EBUSY; @@ -1444,7 +1447,7 @@ static int mce_open(struct inode *inode, if (file->f_flags & O_EXCL) open_exclu = 1; - open_count++; + local_inc(&open_count); spin_unlock(&mce_state_lock); @@ -1455,7 +1458,7 @@ static int mce_release(struct inode *ino { spin_lock(&mce_state_lock); - open_count--; + local_dec(&open_count); open_exclu = 0; spin_unlock(&mce_state_lock); @@ -2082,7 +2085,7 @@ struct dentry *mce_get_debugfs_dir(void) static void mce_reset(void) { cpu_missing = 0; - atomic_set(&mce_fake_paniced, 0); + atomic_set_unchecked(&mce_fake_paniced, 0); atomic_set(&mce_executing, 0); atomic_set(&mce_callin, 0); atomic_set(&global_nwo, 0); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/mce-inject.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/mce-inject.c --- linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/mce-inject.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/mce-inject.c 2012-05-20 19:21:25.285167263 +0200 @@ -211,7 +211,9 @@ static ssize_t mce_write(struct file *fi static int inject_init(void) { printk(KERN_INFO "Machine check injector initialized\n"); - mce_chrdev_ops.write = mce_write; + pax_open_kernel(); + *(void **)&mce_chrdev_ops.write = mce_write; + pax_close_kernel(); register_die_notifier(&mce_raise_nb); return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/p5.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/p5.c --- linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/p5.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/p5.c 2012-03-13 13:15:34.520098023 +0100 @@ -12,6 +12,7 @@ #include #include #include +#include /* By default disabled */ int mce_p5_enabled __read_mostly; @@ -50,7 +51,9 @@ void intel_p5_mcheck_init(struct cpuinfo if (!cpu_has(c, X86_FEATURE_MCE)) return; + pax_open_kernel(); machine_check_vector = pentium_machine_check; + pax_close_kernel(); /* Make sure the vector pointer is visible before we enable MCEs: */ wmb(); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/winchip.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/winchip.c --- linux-2.6.32.59/arch/x86/kernel/cpu/mcheck/winchip.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/mcheck/winchip.c 2012-03-13 13:15:34.520098023 +0100 @@ -11,6 +11,7 @@ #include #include #include +#include /* Machine check handler for WinChip C6: */ static void winchip_machine_check(struct pt_regs *regs, long error_code) @@ -24,7 +25,9 @@ void winchip_mcheck_init(struct cpuinfo_ { u32 lo, hi; + pax_open_kernel(); machine_check_vector = winchip_machine_check; + pax_close_kernel(); /* Make sure the vector pointer is visible before we enable MCEs: */ wmb(); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/mtrr/mtrr.h linux-2.6.32.59-pax/arch/x86/kernel/cpu/mtrr/mtrr.h --- linux-2.6.32.59/arch/x86/kernel/cpu/mtrr/mtrr.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/mtrr/mtrr.h 2012-03-13 13:15:34.520098023 +0100 @@ -25,7 +25,7 @@ struct mtrr_ops { int (*validate_add_page)(unsigned long base, unsigned long size, unsigned int type); int (*have_wrcomb)(void); -}; +} __do_const; extern int generic_get_free_region(unsigned long base, unsigned long size, int replace_reg); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/cpu/perf_event.c linux-2.6.32.59-pax/arch/x86/kernel/cpu/perf_event.c --- linux-2.6.32.59/arch/x86/kernel/cpu/perf_event.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/cpu/perf_event.c 2012-03-13 13:15:34.524098022 +0100 @@ -723,10 +723,10 @@ x86_perf_event_update(struct perf_event * count to the generic event atomically: */ again: - prev_raw_count = atomic64_read(&hwc->prev_count); + prev_raw_count = atomic64_read_unchecked(&hwc->prev_count); rdmsrl(hwc->event_base + idx, new_raw_count); - if (atomic64_cmpxchg(&hwc->prev_count, prev_raw_count, + if (atomic64_cmpxchg_unchecked(&hwc->prev_count, prev_raw_count, new_raw_count) != prev_raw_count) goto again; @@ -741,7 +741,7 @@ again: delta = (new_raw_count << shift) - (prev_raw_count << shift); delta >>= shift; - atomic64_add(delta, &event->count); + atomic64_add_unchecked(delta, &event->count); atomic64_sub(delta, &hwc->period_left); return new_raw_count; @@ -1353,7 +1353,7 @@ x86_perf_event_set_period(struct perf_ev * The hw event starts counting from this event offset, * mark it to be able to extra future deltas: */ - atomic64_set(&hwc->prev_count, (u64)-left); + atomic64_set_unchecked(&hwc->prev_count, (u64)-left); err = checking_wrmsrl(hwc->event_base + idx, (u64)(-left) & x86_pmu.event_mask); @@ -2357,7 +2357,7 @@ perf_callchain_user(struct pt_regs *regs break; callchain_store(entry, frame.return_address); - fp = frame.next_frame; + fp = (__force const void __user *)frame.next_frame; } } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/crash.c linux-2.6.32.59-pax/arch/x86/kernel/crash.c --- linux-2.6.32.59/arch/x86/kernel/crash.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/crash.c 2012-03-13 13:15:34.524098022 +0100 @@ -41,7 +41,7 @@ static void kdump_nmi_callback(int cpu, regs = args->regs; #ifdef CONFIG_X86_32 - if (!user_mode_vm(regs)) { + if (!user_mode(regs)) { crash_fixup_ss_esp(&fixed_regs, regs); regs = &fixed_regs; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/doublefault_32.c linux-2.6.32.59-pax/arch/x86/kernel/doublefault_32.c --- linux-2.6.32.59/arch/x86/kernel/doublefault_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/doublefault_32.c 2012-03-13 13:15:34.524098022 +0100 @@ -11,7 +11,7 @@ #define DOUBLEFAULT_STACKSIZE (1024) static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE]; -#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE) +#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE-2) #define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM) @@ -21,7 +21,7 @@ static void doublefault_fn(void) unsigned long gdt, tss; store_gdt(&gdt_desc); - gdt = gdt_desc.address; + gdt = (unsigned long)gdt_desc.address; printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size); @@ -58,10 +58,10 @@ struct tss_struct doublefault_tss __cach /* 0x2 bit is always set */ .flags = X86_EFLAGS_SF | 0x2, .sp = STACK_START, - .es = __USER_DS, + .es = __KERNEL_DS, .cs = __KERNEL_CS, .ss = __KERNEL_DS, - .ds = __USER_DS, + .ds = __KERNEL_DS, .fs = __KERNEL_PERCPU, .__cr3 = __pa_nodebug(swapper_pg_dir), diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/dumpstack_32.c linux-2.6.32.59-pax/arch/x86/kernel/dumpstack_32.c --- linux-2.6.32.59/arch/x86/kernel/dumpstack_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/dumpstack_32.c 2012-03-13 13:15:34.524098022 +0100 @@ -53,16 +53,12 @@ void dump_trace(struct task_struct *task #endif for (;;) { - struct thread_info *context; + void *stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1)); + bp = print_context_stack(task, stack_start, stack, bp, ops, data, NULL, &graph); - context = (struct thread_info *) - ((unsigned long)stack & (~(THREAD_SIZE - 1))); - bp = print_context_stack(context, stack, bp, ops, - data, NULL, &graph); - - stack = (unsigned long *)context->previous_esp; - if (!stack) + if (stack_start == task_stack_page(task)) break; + stack = *(unsigned long **)stack_start; if (ops->stack(data, "IRQ") < 0) break; touch_nmi_watchdog(); @@ -112,11 +108,12 @@ void show_registers(struct pt_regs *regs * When in-kernel, we also print out the stack and code at the * time of the fault.. */ - if (!user_mode_vm(regs)) { + if (!user_mode(regs)) { unsigned int code_prologue = code_bytes * 43 / 64; unsigned int code_len = code_bytes; unsigned char c; u8 *ip; + unsigned long cs_base = get_desc_base(&get_cpu_gdt_table(smp_processor_id())[(0xffff & regs->cs) >> 3]); printk(KERN_EMERG "Stack:\n"); show_stack_log_lvl(NULL, regs, ®s->sp, @@ -124,10 +121,10 @@ void show_registers(struct pt_regs *regs printk(KERN_EMERG "Code: "); - ip = (u8 *)regs->ip - code_prologue; + ip = (u8 *)regs->ip - code_prologue + cs_base; if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) { /* try starting at IP */ - ip = (u8 *)regs->ip; + ip = (u8 *)regs->ip + cs_base; code_len = code_len - code_prologue + 1; } for (i = 0; i < code_len; i++, ip++) { @@ -136,7 +133,7 @@ void show_registers(struct pt_regs *regs printk(" Bad EIP value."); break; } - if (ip == (u8 *)regs->ip) + if (ip == (u8 *)regs->ip + cs_base) printk("<%02x> ", c); else printk("%02x ", c); @@ -145,10 +142,23 @@ void show_registers(struct pt_regs *regs printk("\n"); } +#ifdef CONFIG_PAX_MEMORY_STACKLEAK +void pax_check_alloca(unsigned long size) +{ + unsigned long sp = (unsigned long)&sp, stack_left; + + /* all kernel stacks are of the same size */ + stack_left = sp & (THREAD_SIZE - 1); + BUG_ON(stack_left < 256 || size >= stack_left - 256); +} +EXPORT_SYMBOL(pax_check_alloca); +#endif + int is_valid_bugaddr(unsigned long ip) { unsigned short ud2; + ip = ktla_ktva(ip); if (ip < PAGE_OFFSET) return 0; if (probe_kernel_address((unsigned short *)ip, ud2)) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/dumpstack_64.c linux-2.6.32.59-pax/arch/x86/kernel/dumpstack_64.c --- linux-2.6.32.59/arch/x86/kernel/dumpstack_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/dumpstack_64.c 2012-05-25 08:50:43.254768214 +0200 @@ -116,8 +116,8 @@ void dump_trace(struct task_struct *task unsigned long *irq_stack_end = (unsigned long *)per_cpu(irq_stack_ptr, cpu); unsigned used = 0; - struct thread_info *tinfo; int graph = 0; + void *stack_start; if (!task) task = current; @@ -146,10 +146,10 @@ void dump_trace(struct task_struct *task * current stack address. If the stacks consist of nested * exceptions */ - tinfo = task_thread_info(task); for (;;) { char *id; unsigned long *estack_end; + estack_end = in_exception_stack(cpu, (unsigned long)stack, &used, &id); @@ -157,7 +157,7 @@ void dump_trace(struct task_struct *task if (ops->stack(data, id) < 0) break; - bp = print_context_stack(tinfo, stack, bp, ops, + bp = print_context_stack(task, estack_end - EXCEPTION_STKSZ, stack, bp, ops, data, estack_end, &graph); ops->stack(data, ""); /* @@ -165,6 +165,8 @@ void dump_trace(struct task_struct *task * second-to-last pointer (index -2 to end) in the * exception stack: */ + if ((u16)estack_end[-1] != __KERNEL_DS) + goto out; stack = (unsigned long *) estack_end[-2]; continue; } @@ -176,7 +178,7 @@ void dump_trace(struct task_struct *task if (stack >= irq_stack && stack < irq_stack_end) { if (ops->stack(data, "IRQ") < 0) break; - bp = print_context_stack(tinfo, stack, bp, + bp = print_context_stack(task, irq_stack, stack, bp, ops, data, irq_stack_end, &graph); /* * We link to the next stack (which would be @@ -195,7 +197,9 @@ void dump_trace(struct task_struct *task /* * This handles the process stack: */ - bp = print_context_stack(tinfo, stack, bp, ops, data, NULL, &graph); + stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1)); + bp = print_context_stack(task, stack_start, stack, bp, ops, data, NULL, &graph); +out: put_cpu(); } EXPORT_SYMBOL(dump_trace); @@ -304,3 +308,50 @@ int is_valid_bugaddr(unsigned long ip) return ud2 == 0x0b0f; } + +#ifdef CONFIG_PAX_MEMORY_STACKLEAK +void pax_check_alloca(unsigned long size) +{ + unsigned long sp = (unsigned long)&sp, stack_start, stack_end; + unsigned cpu, used; + char *id; + + /* check the process stack first */ + stack_start = (unsigned long)task_stack_page(current); + stack_end = stack_start + THREAD_SIZE; + if (likely(stack_start <= sp && sp < stack_end)) { + unsigned long stack_left = sp & (THREAD_SIZE - 1); + BUG_ON(stack_left < 256 || size >= stack_left - 256); + return; + } + + cpu = get_cpu(); + + /* check the irq stacks */ + stack_end = (unsigned long)per_cpu(irq_stack_ptr, cpu); + stack_start = stack_end - IRQ_STACK_SIZE; + if (stack_start <= sp && sp < stack_end) { + unsigned long stack_left = sp & (IRQ_STACK_SIZE - 1); + put_cpu(); + BUG_ON(stack_left < 256 || size >= stack_left - 256); + return; + } + + /* check the exception stacks */ + used = 0; + stack_end = (unsigned long)in_exception_stack(cpu, sp, &used, &id); + stack_start = stack_end - EXCEPTION_STKSZ; + if (stack_end && stack_start <= sp && sp < stack_end) { + unsigned long stack_left = sp & (EXCEPTION_STKSZ - 1); + put_cpu(); + BUG_ON(stack_left < 256 || size >= stack_left - 256); + return; + } + + put_cpu(); + + /* unknown stack */ + BUG(); +} +EXPORT_SYMBOL(pax_check_alloca); +#endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/dumpstack.c linux-2.6.32.59-pax/arch/x86/kernel/dumpstack.c --- linux-2.6.32.59/arch/x86/kernel/dumpstack.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/dumpstack.c 2012-03-13 13:15:34.528098022 +0100 @@ -36,9 +36,8 @@ void printk_address(unsigned long addres static void print_ftrace_graph_addr(unsigned long addr, void *data, const struct stacktrace_ops *ops, - struct thread_info *tinfo, int *graph) + struct task_struct *task, int *graph) { - struct task_struct *task = tinfo->task; unsigned long ret_addr; int index = task->curr_ret_stack; @@ -59,7 +58,7 @@ print_ftrace_graph_addr(unsigned long ad static inline void print_ftrace_graph_addr(unsigned long addr, void *data, const struct stacktrace_ops *ops, - struct thread_info *tinfo, int *graph) + struct task_struct *task, int *graph) { } #endif @@ -70,10 +69,8 @@ print_ftrace_graph_addr(unsigned long ad * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack */ -static inline int valid_stack_ptr(struct thread_info *tinfo, - void *p, unsigned int size, void *end) +static inline int valid_stack_ptr(void *t, void *p, unsigned int size, void *end) { - void *t = tinfo; if (end) { if (p < end && p >= (end-THREAD_SIZE)) return 1; @@ -84,14 +81,14 @@ static inline int valid_stack_ptr(struct } unsigned long -print_context_stack(struct thread_info *tinfo, +print_context_stack(struct task_struct *task, void *stack_start, unsigned long *stack, unsigned long bp, const struct stacktrace_ops *ops, void *data, unsigned long *end, int *graph) { struct stack_frame *frame = (struct stack_frame *)bp; - while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) { + while (valid_stack_ptr(stack_start, stack, sizeof(*stack), end)) { unsigned long addr; addr = *stack; @@ -103,7 +100,7 @@ print_context_stack(struct thread_info * } else { ops->address(data, addr, 0); } - print_ftrace_graph_addr(addr, data, ops, tinfo, graph); + print_ftrace_graph_addr(addr, data, ops, task, graph); } stack++; } @@ -180,7 +177,7 @@ void dump_stack(void) #endif printk("Pid: %d, comm: %.20s %s %s %.*s\n", - current->pid, current->comm, print_tainted(), + task_pid_nr(current), current->comm, print_tainted(), init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version); @@ -241,7 +238,7 @@ void __kprobes oops_end(unsigned long fl panic("Fatal exception in interrupt"); if (panic_on_oops) panic("Fatal exception"); - do_exit(signr); + do_group_exit(signr); } int __kprobes __die(const char *str, struct pt_regs *regs, long err) @@ -295,7 +292,7 @@ void die(const char *str, struct pt_regs unsigned long flags = oops_begin(); int sig = SIGSEGV; - if (!user_mode_vm(regs)) + if (!user_mode(regs)) report_bug(regs->ip, regs); if (__die(str, regs, err)) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/dumpstack.h linux-2.6.32.59-pax/arch/x86/kernel/dumpstack.h --- linux-2.6.32.59/arch/x86/kernel/dumpstack.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/dumpstack.h 2012-03-13 13:15:34.528098022 +0100 @@ -15,7 +15,7 @@ #endif extern unsigned long -print_context_stack(struct thread_info *tinfo, +print_context_stack(struct task_struct *task, void *stack_start, unsigned long *stack, unsigned long bp, const struct stacktrace_ops *ops, void *data, unsigned long *end, int *graph); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/e820.c linux-2.6.32.59-pax/arch/x86/kernel/e820.c --- linux-2.6.32.59/arch/x86/kernel/e820.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/e820.c 2012-03-13 13:15:34.528098022 +0100 @@ -733,7 +733,7 @@ struct early_res { }; static struct early_res early_res[MAX_EARLY_RES] __initdata = { { 0, PAGE_SIZE, "BIOS data page" }, /* BIOS data page */ - {} + { 0, 0, {0}, 0 } }; static int __init find_overlapped_early(u64 start, u64 end) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/early_printk.c linux-2.6.32.59-pax/arch/x86/kernel/early_printk.c --- linux-2.6.32.59/arch/x86/kernel/early_printk.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/early_printk.c 2012-03-13 13:15:34.528098022 +0100 @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/efi_32.c linux-2.6.32.59-pax/arch/x86/kernel/efi_32.c --- linux-2.6.32.59/arch/x86/kernel/efi_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/efi_32.c 2012-03-13 13:15:34.532098022 +0100 @@ -38,70 +38,56 @@ */ static unsigned long efi_rt_eflags; -static pgd_t efi_bak_pg_dir_pointer[2]; +static pgd_t __initdata efi_bak_pg_dir_pointer[KERNEL_PGD_PTRS]; -void efi_call_phys_prelog(void) +void __init efi_call_phys_prelog(void) { - unsigned long cr4; - unsigned long temp; struct desc_ptr gdt_descr; - local_irq_save(efi_rt_eflags); +#ifdef CONFIG_PAX_KERNEXEC + struct desc_struct d; +#endif - /* - * If I don't have PAE, I should just duplicate two entries in page - * directory. If I have PAE, I just need to duplicate one entry in - * page directory. - */ - cr4 = read_cr4_safe(); + local_irq_save(efi_rt_eflags); - if (cr4 & X86_CR4_PAE) { - efi_bak_pg_dir_pointer[0].pgd = - swapper_pg_dir[pgd_index(0)].pgd; - swapper_pg_dir[0].pgd = - swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd; - } else { - efi_bak_pg_dir_pointer[0].pgd = - swapper_pg_dir[pgd_index(0)].pgd; - efi_bak_pg_dir_pointer[1].pgd = - swapper_pg_dir[pgd_index(0x400000)].pgd; - swapper_pg_dir[pgd_index(0)].pgd = - swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd; - temp = PAGE_OFFSET + 0x400000; - swapper_pg_dir[pgd_index(0x400000)].pgd = - swapper_pg_dir[pgd_index(temp)].pgd; - } + clone_pgd_range(efi_bak_pg_dir_pointer, swapper_pg_dir, KERNEL_PGD_PTRS); + clone_pgd_range(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY, + min_t(unsigned long, KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY)); /* * After the lock is released, the original page table is restored. */ __flush_tlb_all(); +#ifdef CONFIG_PAX_KERNEXEC + pack_descriptor(&d, 0, 0xFFFFF, 0x9B, 0xC); + write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S); + pack_descriptor(&d, 0, 0xFFFFF, 0x93, 0xC); + write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S); +#endif + gdt_descr.address = __pa(get_cpu_gdt_table(0)); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); } -void efi_call_phys_epilog(void) +void __init efi_call_phys_epilog(void) { - unsigned long cr4; struct desc_ptr gdt_descr; +#ifdef CONFIG_PAX_KERNEXEC + struct desc_struct d; + + memset(&d, 0, sizeof d); + write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S); + write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S); +#endif + gdt_descr.address = (unsigned long)get_cpu_gdt_table(0); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); - cr4 = read_cr4_safe(); - - if (cr4 & X86_CR4_PAE) { - swapper_pg_dir[pgd_index(0)].pgd = - efi_bak_pg_dir_pointer[0].pgd; - } else { - swapper_pg_dir[pgd_index(0)].pgd = - efi_bak_pg_dir_pointer[0].pgd; - swapper_pg_dir[pgd_index(0x400000)].pgd = - efi_bak_pg_dir_pointer[1].pgd; - } + clone_pgd_range(swapper_pg_dir, efi_bak_pg_dir_pointer, KERNEL_PGD_PTRS); /* * After the lock is released, the original page table is restored. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/efi_stub_32.S linux-2.6.32.59-pax/arch/x86/kernel/efi_stub_32.S --- linux-2.6.32.59/arch/x86/kernel/efi_stub_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/efi_stub_32.S 2012-08-06 13:25:13.803004527 +0200 @@ -6,7 +6,9 @@ */ #include +#include #include +#include /* * efi_call_phys(void *, ...) is a function with variable parameters. @@ -20,7 +22,7 @@ * service functions will comply with gcc calling convention, too. */ -.text +__INIT ENTRY(efi_call_phys) /* * 0. The function can only be called in Linux kernel. So CS has been @@ -36,10 +38,24 @@ ENTRY(efi_call_phys) * The mapping of lower virtual memory has been created in prelog and * epilog. */ - movl $1f, %edx - subl $__PAGE_OFFSET, %edx - jmp *%edx +#ifdef CONFIG_PAX_KERNEXEC + movl $(__KERNEXEC_EFI_DS), %edx + mov %edx, %ds + mov %edx, %es + mov %edx, %ss + addl $2f,(1f) + ljmp *(1f) + +__INITDATA +1: .long __LOAD_PHYSICAL_ADDR, __KERNEXEC_EFI_CS +.previous + +2: + subl $2b,(1b) +#else + jmp 1f-__PAGE_OFFSET 1: +#endif /* * 2. Now on the top of stack is the return @@ -47,14 +63,8 @@ ENTRY(efi_call_phys) * parameter 2, ..., param n. To make things easy, we save the return * address of efi_call_phys in a global variable. */ - popl %edx - movl %edx, saved_return_addr - /* get the function pointer into ECX*/ - popl %ecx - movl %ecx, efi_rt_function_ptr - movl $2f, %edx - subl $__PAGE_OFFSET, %edx - pushl %edx + popl (saved_return_addr) + popl (efi_rt_function_ptr) /* * 3. Clear PG bit in %CR0. @@ -73,9 +83,8 @@ ENTRY(efi_call_phys) /* * 5. Call the physical function. */ - jmp *%ecx + call *(efi_rt_function_ptr-__PAGE_OFFSET) -2: /* * 6. After EFI runtime service returns, control will return to * following instruction. We'd better readjust stack pointer first. @@ -88,35 +97,36 @@ ENTRY(efi_call_phys) movl %cr0, %edx orl $0x80000000, %edx movl %edx, %cr0 - jmp 1f -1: + /* * 8. Now restore the virtual mode from flat mode by * adding EIP with PAGE_OFFSET. */ - movl $1f, %edx - jmp *%edx +#ifdef CONFIG_PAX_KERNEXEC + movl $(__KERNEL_DS), %edx + mov %edx, %ds + mov %edx, %es + mov %edx, %ss + ljmp $(__KERNEL_CS),$1f +#else + jmp 1f+__PAGE_OFFSET +#endif 1: /* * 9. Balance the stack. And because EAX contain the return value, * we'd better not clobber it. */ - leal efi_rt_function_ptr, %edx - movl (%edx), %ecx - pushl %ecx + pushl (efi_rt_function_ptr) /* - * 10. Push the saved return address onto the stack and return. + * 10. Return to the saved return address. */ - leal saved_return_addr, %edx - movl (%edx), %ecx - pushl %ecx - ret + jmpl *(saved_return_addr) ENDPROC(efi_call_phys) .previous -.data +__INITDATA saved_return_addr: .long 0 efi_rt_function_ptr: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/efi_stub_64.S linux-2.6.32.59-pax/arch/x86/kernel/efi_stub_64.S --- linux-2.6.32.59/arch/x86/kernel/efi_stub_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/efi_stub_64.S 2012-03-13 13:15:34.532098022 +0100 @@ -7,6 +7,7 @@ */ #include +#include #define SAVE_XMM \ mov %rsp, %rax; \ @@ -40,6 +41,7 @@ ENTRY(efi_call0) call *%rdi addq $32, %rsp RESTORE_XMM + pax_force_retaddr 0, 1 ret ENDPROC(efi_call0) @@ -50,6 +52,7 @@ ENTRY(efi_call1) call *%rdi addq $32, %rsp RESTORE_XMM + pax_force_retaddr 0, 1 ret ENDPROC(efi_call1) @@ -60,6 +63,7 @@ ENTRY(efi_call2) call *%rdi addq $32, %rsp RESTORE_XMM + pax_force_retaddr 0, 1 ret ENDPROC(efi_call2) @@ -71,6 +75,7 @@ ENTRY(efi_call3) call *%rdi addq $32, %rsp RESTORE_XMM + pax_force_retaddr 0, 1 ret ENDPROC(efi_call3) @@ -83,6 +88,7 @@ ENTRY(efi_call4) call *%rdi addq $32, %rsp RESTORE_XMM + pax_force_retaddr 0, 1 ret ENDPROC(efi_call4) @@ -96,6 +102,7 @@ ENTRY(efi_call5) call *%rdi addq $48, %rsp RESTORE_XMM + pax_force_retaddr 0, 1 ret ENDPROC(efi_call5) @@ -112,5 +119,6 @@ ENTRY(efi_call6) call *%rdi addq $48, %rsp RESTORE_XMM + pax_force_retaddr 0, 1 ret ENDPROC(efi_call6) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/entry_32.S linux-2.6.32.59-pax/arch/x86/kernel/entry_32.S --- linux-2.6.32.59/arch/x86/kernel/entry_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/entry_32.S 2012-08-25 11:13:51.849925753 +0200 @@ -185,13 +185,153 @@ /*CFI_REL_OFFSET gs, PT_GS*/ .endm .macro SET_KERNEL_GS reg + +#ifdef CONFIG_CC_STACKPROTECTOR movl $(__KERNEL_STACK_CANARY), \reg +#elif defined(CONFIG_PAX_MEMORY_UDEREF) + movl $(__USER_DS), \reg +#else + xorl \reg, \reg +#endif + movl \reg, %gs .endm #endif /* CONFIG_X86_32_LAZY_GS */ -.macro SAVE_ALL +.macro pax_enter_kernel +#ifdef CONFIG_PAX_KERNEXEC + call pax_enter_kernel +#endif +.endm + +.macro pax_exit_kernel +#ifdef CONFIG_PAX_KERNEXEC + call pax_exit_kernel +#endif +.endm + +#ifdef CONFIG_PAX_KERNEXEC +ENTRY(pax_enter_kernel) +#ifdef CONFIG_PARAVIRT + pushl %eax + pushl %ecx + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0) + mov %eax, %esi +#else + mov %cr0, %esi +#endif + bts $16, %esi + jnc 1f + mov %cs, %esi + cmp $__KERNEL_CS, %esi + jz 3f + ljmp $__KERNEL_CS, $3f +1: ljmp $__KERNEXEC_KERNEL_CS, $2f +2: +#ifdef CONFIG_PARAVIRT + mov %esi, %eax + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0) +#else + mov %esi, %cr0 +#endif +3: +#ifdef CONFIG_PARAVIRT + popl %ecx + popl %eax +#endif + ret +ENDPROC(pax_enter_kernel) + +ENTRY(pax_exit_kernel) +#ifdef CONFIG_PARAVIRT + pushl %eax + pushl %ecx +#endif + mov %cs, %esi + cmp $__KERNEXEC_KERNEL_CS, %esi + jnz 2f +#ifdef CONFIG_PARAVIRT + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); + mov %eax, %esi +#else + mov %cr0, %esi +#endif + btr $16, %esi + ljmp $__KERNEL_CS, $1f +1: +#ifdef CONFIG_PARAVIRT + mov %esi, %eax + call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0); +#else + mov %esi, %cr0 +#endif +2: +#ifdef CONFIG_PARAVIRT + popl %ecx + popl %eax +#endif + ret +ENDPROC(pax_exit_kernel) +#endif + +.macro pax_erase_kstack +#ifdef CONFIG_PAX_MEMORY_STACKLEAK + call pax_erase_kstack +#endif +.endm + +#ifdef CONFIG_PAX_MEMORY_STACKLEAK +/* + * ebp: thread_info + */ +ENTRY(pax_erase_kstack) + pushl %edi + pushl %ecx + pushl %eax + + mov TI_lowest_stack(%ebp), %edi + mov $0xB4DD00D5, %eax + std + +1: mov %edi, %ecx + and $THREAD_SIZE_asm - 1, %ecx + shr $2, %ecx + repne scasl + jecxz 2f + + cmp $2*16, %ecx + jc 2f + + mov $2*16, %ecx + repe scasl + jecxz 2f + jne 1b + +2: cld + mov %esp, %ecx + sub %edi, %ecx + + cmp $THREAD_SIZE_asm, %ecx + jb 3f + ud2 +3: + + shr $2, %ecx + rep stosl + + mov TI_task_thread_sp0(%ebp), %edi + sub $128, %edi + mov %edi, TI_lowest_stack(%ebp) + + popl %eax + popl %ecx + popl %edi + ret +ENDPROC(pax_erase_kstack) +#endif + +.macro __SAVE_ALL _DS cld PUSH_GS pushl %fs @@ -224,7 +364,7 @@ pushl %ebx CFI_ADJUST_CFA_OFFSET 4 CFI_REL_OFFSET ebx, 0 - movl $(__USER_DS), %edx + movl $\_DS, %edx movl %edx, %ds movl %edx, %es movl $(__KERNEL_PERCPU), %edx @@ -232,6 +372,15 @@ SET_KERNEL_GS %edx .endm +.macro SAVE_ALL +#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF) + __SAVE_ALL __KERNEL_DS + pax_enter_kernel +#else + __SAVE_ALL __USER_DS +#endif +.endm + .macro RESTORE_INT_REGS popl %ebx CFI_ADJUST_CFA_OFFSET -4 @@ -331,7 +480,7 @@ ENTRY(ret_from_fork) CFI_ADJUST_CFA_OFFSET -4 jmp syscall_exit CFI_ENDPROC -END(ret_from_fork) +ENDPROC(ret_from_fork) /* * Return to user mode is not as complex as all this looks, @@ -352,7 +501,15 @@ check_userspace: movb PT_CS(%esp), %al andl $(X86_EFLAGS_VM | SEGMENT_RPL_MASK), %eax cmpl $USER_RPL, %eax + +#ifdef CONFIG_PAX_KERNEXEC + jae resume_userspace + + pax_exit_kernel + jmp resume_kernel +#else jb resume_kernel # not returning to v8086 or userspace +#endif ENTRY(resume_userspace) LOCKDEP_SYS_EXIT @@ -364,8 +521,8 @@ ENTRY(resume_userspace) andl $_TIF_WORK_MASK, %ecx # is there any work to be done on # int/exception return? jne work_pending - jmp restore_all -END(ret_from_exception) + jmp restore_all_pax +ENDPROC(ret_from_exception) #ifdef CONFIG_PREEMPT ENTRY(resume_kernel) @@ -380,7 +537,7 @@ need_resched: jz restore_all call preempt_schedule_irq jmp need_resched -END(resume_kernel) +ENDPROC(resume_kernel) #endif CFI_ENDPROC @@ -414,25 +571,36 @@ sysenter_past_esp: /*CFI_REL_OFFSET cs, 0*/ /* * Push current_thread_info()->sysenter_return to the stack. - * A tiny bit of offset fixup is necessary - 4*4 means the 4 words - * pushed above; +8 corresponds to copy_thread's esp0 setting. */ - pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp) + pushl $0 CFI_ADJUST_CFA_OFFSET 4 CFI_REL_OFFSET eip, 0 pushl %eax CFI_ADJUST_CFA_OFFSET 4 SAVE_ALL + GET_THREAD_INFO(%ebp) + movl TI_sysenter_return(%ebp),%ebp + movl %ebp,PT_EIP(%esp) ENABLE_INTERRUPTS(CLBR_NONE) /* * Load the potential sixth argument from user stack. * Careful about security. */ + movl PT_OLDESP(%esp),%ebp + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov PT_OLDSS(%esp),%ds +1: movl %ds:(%ebp),%ebp + push %ss + pop %ds +#else cmpl $__PAGE_OFFSET-3,%ebp jae syscall_fault 1: movl (%ebp),%ebp +#endif + movl %ebp,PT_EBP(%esp) .section __ex_table,"a" .align 4 @@ -441,6 +609,10 @@ sysenter_past_esp: GET_THREAD_INFO(%ebp) +#ifdef CONFIG_PAX_RANDKSTACK + pax_erase_kstack +#endif + testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp) jnz sysenter_audit sysenter_do_call: @@ -455,12 +627,24 @@ sysenter_do_call: testl $_TIF_ALLWORK_MASK, %ecx jne sysexit_audit sysenter_exit: + +#ifdef CONFIG_PAX_RANDKSTACK + pushl_cfi %eax + movl %esp, %eax + call pax_randomize_kstack + popl_cfi %eax +#endif + + pax_erase_kstack + /* if something modifies registers it must also disable sysexit */ movl PT_EIP(%esp), %edx movl PT_OLDESP(%esp), %ecx xorl %ebp,%ebp TRACE_IRQS_ON 1: mov PT_FS(%esp), %fs +2: mov PT_DS(%esp), %ds +3: mov PT_ES(%esp), %es PTGS_TO_GS ENABLE_INTERRUPTS_SYSEXIT @@ -477,6 +661,9 @@ sysenter_audit: movl %eax,%edx /* 2nd arg: syscall number */ movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */ call audit_syscall_entry + + pax_erase_kstack + pushl %ebx CFI_ADJUST_CFA_OFFSET 4 movl PT_EAX(%esp),%eax /* reload syscall number */ @@ -504,11 +691,17 @@ sysexit_audit: CFI_ENDPROC .pushsection .fixup,"ax" -2: movl $0,PT_FS(%esp) +4: movl $0,PT_FS(%esp) + jmp 1b +5: movl $0,PT_DS(%esp) + jmp 1b +6: movl $0,PT_ES(%esp) jmp 1b .section __ex_table,"a" .align 4 - .long 1b,2b + .long 1b,4b + .long 2b,5b + .long 3b,6b .popsection PTGS_TO_GS_EX ENDPROC(ia32_sysenter_target) @@ -520,6 +713,11 @@ ENTRY(system_call) CFI_ADJUST_CFA_OFFSET 4 SAVE_ALL GET_THREAD_INFO(%ebp) + +#ifdef CONFIG_PAX_RANDKSTACK + pax_erase_kstack +#endif + # system call tracing in operation / emulation testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp) jnz syscall_trace_entry @@ -538,6 +736,15 @@ syscall_exit: testl $_TIF_ALLWORK_MASK, %ecx # current->work jne syscall_exit_work +restore_all_pax: + +#ifdef CONFIG_PAX_RANDKSTACK + movl %esp, %eax + call pax_randomize_kstack +#endif + + pax_erase_kstack + restore_all: TRACE_IRQS_IRET restore_all_notrace: @@ -602,10 +809,29 @@ ldt_ss: mov PT_OLDESP(%esp), %eax /* load userspace esp */ mov %dx, %ax /* eax: new kernel esp */ sub %eax, %edx /* offset (low word is 0) */ - PER_CPU(gdt_page, %ebx) +#ifdef CONFIG_SMP + movl PER_CPU_VAR(cpu_number), %ebx + shll $PAGE_SHIFT_asm, %ebx + addl $cpu_gdt_table, %ebx +#else + movl $cpu_gdt_table, %ebx +#endif shr $16, %edx + +#ifdef CONFIG_PAX_KERNEXEC + mov %cr0, %esi + btr $16, %esi + mov %esi, %cr0 +#endif + mov %dl, GDT_ENTRY_ESPFIX_SS * 8 + 4(%ebx) /* bits 16..23 */ mov %dh, GDT_ENTRY_ESPFIX_SS * 8 + 7(%ebx) /* bits 24..31 */ + +#ifdef CONFIG_PAX_KERNEXEC + bts $16, %esi + mov %esi, %cr0 +#endif + pushl $__ESPFIX_SS CFI_ADJUST_CFA_OFFSET 4 push %eax /* new kernel esp */ @@ -636,36 +862,30 @@ work_resched: movl TI_flags(%ebp), %ecx andl $_TIF_WORK_MASK, %ecx # is there any work to be done other # than syscall tracing? - jz restore_all + jz restore_all_pax testb $_TIF_NEED_RESCHED, %cl jnz work_resched work_notifysig: # deal with pending signals and # notify-resume requests + movl %esp, %eax #ifdef CONFIG_VM86 testl $X86_EFLAGS_VM, PT_EFLAGS(%esp) - movl %esp, %eax - jne work_notifysig_v86 # returning to kernel-space or + jz 1f # returning to kernel-space or # vm86-space - xorl %edx, %edx - call do_notify_resume - jmp resume_userspace_sig - ALIGN -work_notifysig_v86: pushl %ecx # save ti_flags for do_notify_resume CFI_ADJUST_CFA_OFFSET 4 call save_v86_state # %eax contains pt_regs pointer popl %ecx CFI_ADJUST_CFA_OFFSET -4 movl %eax, %esp -#else - movl %esp, %eax +1: #endif xorl %edx, %edx call do_notify_resume jmp resume_userspace_sig -END(work_pending) +ENDPROC(work_pending) # perform syscall exit tracing ALIGN @@ -673,11 +893,14 @@ syscall_trace_entry: movl $-ENOSYS,PT_EAX(%esp) movl %esp, %eax call syscall_trace_enter + + pax_erase_kstack + /* What it returned is what we'll actually use. */ cmpl $(nr_syscalls), %eax jnae syscall_call jmp syscall_exit -END(syscall_trace_entry) +ENDPROC(syscall_trace_entry) # perform syscall exit tracing ALIGN @@ -690,20 +913,24 @@ syscall_exit_work: movl %esp, %eax call syscall_trace_leave jmp resume_userspace -END(syscall_exit_work) +ENDPROC(syscall_exit_work) CFI_ENDPROC RING0_INT_FRAME # can't unwind into user space anyway syscall_fault: +#ifdef CONFIG_PAX_MEMORY_UDEREF + push %ss + pop %ds +#endif GET_THREAD_INFO(%ebp) movl $-EFAULT,PT_EAX(%esp) jmp resume_userspace -END(syscall_fault) +ENDPROC(syscall_fault) syscall_badsys: movl $-ENOSYS,PT_EAX(%esp) jmp resume_userspace -END(syscall_badsys) +ENDPROC(syscall_badsys) CFI_ENDPROC /* @@ -726,6 +953,33 @@ PTREGSCALL(rt_sigreturn) PTREGSCALL(vm86) PTREGSCALL(vm86old) + ALIGN; +ENTRY(kernel_execve) + push %ebp + sub $PT_OLDSS+4,%esp + push %edi + push %ecx + push %eax + lea 3*4(%esp),%edi + mov $PT_OLDSS/4+1,%ecx + xorl %eax,%eax + rep stosl + pop %eax + pop %ecx + pop %edi + movl $X86_EFLAGS_IF,PT_EFLAGS(%esp) + mov %eax,PT_EBX(%esp) + mov %edx,PT_ECX(%esp) + mov %ecx,PT_EDX(%esp) + mov %esp,%eax + call sys_execve + GET_THREAD_INFO(%ebp) + test %eax,%eax + jz syscall_exit + add $PT_OLDSS+4,%esp + pop %ebp + ret + .macro FIXUP_ESPFIX_STACK /* * Switch back for ESPFIX stack to the normal zerobased stack @@ -735,7 +989,13 @@ PTREGSCALL(vm86old) * normal stack and adjusts ESP with the matching offset. */ /* fixup the stack */ - PER_CPU(gdt_page, %ebx) +#ifdef CONFIG_SMP + movl PER_CPU_VAR(cpu_number), %ebx + shll $PAGE_SHIFT_asm, %ebx + addl $cpu_gdt_table, %ebx +#else + movl $cpu_gdt_table, %ebx +#endif mov GDT_ENTRY_ESPFIX_SS * 8 + 4(%ebx), %al /* bits 16..23 */ mov GDT_ENTRY_ESPFIX_SS * 8 + 7(%ebx), %ah /* bits 24..31 */ shl $16, %eax @@ -793,7 +1053,7 @@ vector=vector+1 .endr 2: jmp common_interrupt .endr -END(irq_entries_start) +ENDPROC(irq_entries_start) .previous END(interrupt) @@ -840,7 +1100,7 @@ ENTRY(coprocessor_error) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(coprocessor_error) +ENDPROC(coprocessor_error) ENTRY(simd_coprocessor_error) RING0_INT_FRAME @@ -850,7 +1110,7 @@ ENTRY(simd_coprocessor_error) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(simd_coprocessor_error) +ENDPROC(simd_coprocessor_error) ENTRY(device_not_available) RING0_INT_FRAME @@ -860,7 +1120,7 @@ ENTRY(device_not_available) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(device_not_available) +ENDPROC(device_not_available) #ifdef CONFIG_PARAVIRT ENTRY(native_iret) @@ -869,12 +1129,12 @@ ENTRY(native_iret) .align 4 .long native_iret, iret_exc .previous -END(native_iret) +ENDPROC(native_iret) ENTRY(native_irq_enable_sysexit) sti sysexit -END(native_irq_enable_sysexit) +ENDPROC(native_irq_enable_sysexit) #endif ENTRY(overflow) @@ -885,7 +1145,7 @@ ENTRY(overflow) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(overflow) +ENDPROC(overflow) ENTRY(bounds) RING0_INT_FRAME @@ -895,7 +1155,7 @@ ENTRY(bounds) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(bounds) +ENDPROC(bounds) ENTRY(invalid_op) RING0_INT_FRAME @@ -905,7 +1165,7 @@ ENTRY(invalid_op) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(invalid_op) +ENDPROC(invalid_op) ENTRY(coprocessor_segment_overrun) RING0_INT_FRAME @@ -915,7 +1175,7 @@ ENTRY(coprocessor_segment_overrun) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(coprocessor_segment_overrun) +ENDPROC(coprocessor_segment_overrun) ENTRY(invalid_TSS) RING0_EC_FRAME @@ -923,7 +1183,7 @@ ENTRY(invalid_TSS) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(invalid_TSS) +ENDPROC(invalid_TSS) ENTRY(segment_not_present) RING0_EC_FRAME @@ -931,7 +1191,7 @@ ENTRY(segment_not_present) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(segment_not_present) +ENDPROC(segment_not_present) ENTRY(stack_segment) RING0_EC_FRAME @@ -939,7 +1199,7 @@ ENTRY(stack_segment) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(stack_segment) +ENDPROC(stack_segment) ENTRY(alignment_check) RING0_EC_FRAME @@ -947,7 +1207,7 @@ ENTRY(alignment_check) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(alignment_check) +ENDPROC(alignment_check) ENTRY(divide_error) RING0_INT_FRAME @@ -957,7 +1217,7 @@ ENTRY(divide_error) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(divide_error) +ENDPROC(divide_error) #ifdef CONFIG_X86_MCE ENTRY(machine_check) @@ -968,7 +1228,7 @@ ENTRY(machine_check) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(machine_check) +ENDPROC(machine_check) #endif ENTRY(spurious_interrupt_bug) @@ -979,7 +1239,7 @@ ENTRY(spurious_interrupt_bug) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(spurious_interrupt_bug) +ENDPROC(spurious_interrupt_bug) ENTRY(kernel_thread_helper) pushl $0 # fake return address for unwinder @@ -1095,7 +1355,7 @@ ENDPROC(xen_failsafe_callback) ENTRY(mcount) ret -END(mcount) +ENDPROC(mcount) ENTRY(ftrace_caller) cmpl $0, function_trace_stop @@ -1124,7 +1384,7 @@ ftrace_graph_call: .globl ftrace_stub ftrace_stub: ret -END(ftrace_caller) +ENDPROC(ftrace_caller) #else /* ! CONFIG_DYNAMIC_FTRACE */ @@ -1160,7 +1420,7 @@ trace: popl %ecx popl %eax jmp ftrace_stub -END(mcount) +ENDPROC(mcount) #endif /* CONFIG_DYNAMIC_FTRACE */ #endif /* CONFIG_FUNCTION_TRACER */ @@ -1181,7 +1441,7 @@ ENTRY(ftrace_graph_caller) popl %ecx popl %eax ret -END(ftrace_graph_caller) +ENDPROC(ftrace_graph_caller) .globl return_to_handler return_to_handler: @@ -1198,7 +1458,6 @@ return_to_handler: ret #endif -.section .rodata,"a" #include "syscall_table_32.S" syscall_table_size=(.-sys_call_table) @@ -1255,15 +1514,18 @@ error_code: movl $-1, PT_ORIG_EAX(%esp) # no syscall to restart REG_TO_PTGS %ecx SET_KERNEL_GS %ecx - movl $(__USER_DS), %ecx + movl $(__KERNEL_DS), %ecx movl %ecx, %ds movl %ecx, %es + + pax_enter_kernel + TRACE_IRQS_OFF movl %esp,%eax # pt_regs pointer call *%edi jmp ret_from_exception CFI_ENDPROC -END(page_fault) +ENDPROC(page_fault) /* * Debug traps and NMI can happen at the one SYSENTER instruction @@ -1309,7 +1571,7 @@ debug_stack_correct: call do_debug jmp ret_from_exception CFI_ENDPROC -END(debug) +ENDPROC(debug) /* * NMI is doubly nasty. It can happen _while_ we're handling @@ -1351,6 +1613,9 @@ nmi_stack_correct: xorl %edx,%edx # zero error code movl %esp,%eax # pt_regs pointer call do_nmi + + pax_exit_kernel + jmp restore_all_notrace CFI_ENDPROC @@ -1391,12 +1656,15 @@ nmi_espfix_stack: FIXUP_ESPFIX_STACK # %eax == %esp xorl %edx,%edx # zero error code call do_nmi + + pax_exit_kernel + RESTORE_REGS lss 12+4(%esp), %esp # back to espfix stack CFI_ADJUST_CFA_OFFSET -24 jmp irq_return CFI_ENDPROC -END(nmi) +ENDPROC(nmi) ENTRY(int3) RING0_INT_FRAME @@ -1409,7 +1677,7 @@ ENTRY(int3) call do_int3 jmp ret_from_exception CFI_ENDPROC -END(int3) +ENDPROC(int3) ENTRY(general_protection) RING0_EC_FRAME @@ -1417,7 +1685,7 @@ ENTRY(general_protection) CFI_ADJUST_CFA_OFFSET 4 jmp error_code CFI_ENDPROC -END(general_protection) +ENDPROC(general_protection) /* * End of kprobes section diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/entry_64.S linux-2.6.32.59-pax/arch/x86/kernel/entry_64.S --- linux-2.6.32.59/arch/x86/kernel/entry_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/entry_64.S 2012-08-25 11:12:17.281930015 +0200 @@ -53,6 +53,8 @@ #include #include #include +#include +#include /* Avoid __ASSEMBLER__'ifying just for this. */ #include @@ -64,8 +66,9 @@ #ifdef CONFIG_FUNCTION_TRACER #ifdef CONFIG_DYNAMIC_FTRACE ENTRY(mcount) + pax_force_retaddr retq -END(mcount) +ENDPROC(mcount) ENTRY(ftrace_caller) cmpl $0, function_trace_stop @@ -88,8 +91,9 @@ GLOBAL(ftrace_graph_call) #endif GLOBAL(ftrace_stub) + pax_force_retaddr retq -END(ftrace_caller) +ENDPROC(ftrace_caller) #else /* ! CONFIG_DYNAMIC_FTRACE */ ENTRY(mcount) @@ -108,6 +112,7 @@ ENTRY(mcount) #endif GLOBAL(ftrace_stub) + pax_force_retaddr retq trace: @@ -117,12 +122,13 @@ trace: movq 8(%rbp), %rsi subq $MCOUNT_INSN_SIZE, %rdi + pax_force_fptr ftrace_trace_function call *ftrace_trace_function MCOUNT_RESTORE_FRAME jmp ftrace_stub -END(mcount) +ENDPROC(mcount) #endif /* CONFIG_DYNAMIC_FTRACE */ #endif /* CONFIG_FUNCTION_TRACER */ @@ -142,8 +148,9 @@ ENTRY(ftrace_graph_caller) MCOUNT_RESTORE_FRAME + pax_force_retaddr retq -END(ftrace_graph_caller) +ENDPROC(ftrace_graph_caller) GLOBAL(return_to_handler) subq $24, %rsp @@ -159,6 +166,7 @@ GLOBAL(return_to_handler) movq 8(%rsp), %rdx movq (%rsp), %rax addq $16, %rsp + pax_force_retaddr retq #endif @@ -174,6 +182,280 @@ ENTRY(native_usergs_sysret64) ENDPROC(native_usergs_sysret64) #endif /* CONFIG_PARAVIRT */ + .macro ljmpq sel, off +#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2) || defined (CONFIG_MATOM) + .byte 0x48; ljmp *1234f(%rip) + .pushsection .rodata + .align 16 + 1234: .quad \off; .word \sel + .popsection +#else + pushq $\sel + pushq $\off + lretq +#endif + .endm + + .macro pax_enter_kernel + pax_set_fptr_mask +#ifdef CONFIG_PAX_KERNEXEC + call pax_enter_kernel +#endif + .endm + + .macro pax_exit_kernel +#ifdef CONFIG_PAX_KERNEXEC + call pax_exit_kernel +#endif + .endm + +#ifdef CONFIG_PAX_KERNEXEC +ENTRY(pax_enter_kernel) + pushq %rdi + +#ifdef CONFIG_PARAVIRT + PV_SAVE_REGS(CLBR_RDI) +#endif + + GET_CR0_INTO_RDI + bts $16,%rdi + jnc 3f + mov %cs,%edi + cmp $__KERNEL_CS,%edi + jnz 2f +1: + +#ifdef CONFIG_PARAVIRT + PV_RESTORE_REGS(CLBR_RDI) +#endif + + popq %rdi + pax_force_retaddr + retq + +2: ljmpq __KERNEL_CS,1f +3: ljmpq __KERNEXEC_KERNEL_CS,4f +4: SET_RDI_INTO_CR0 + jmp 1b +ENDPROC(pax_enter_kernel) + +ENTRY(pax_exit_kernel) + pushq %rdi + +#ifdef CONFIG_PARAVIRT + PV_SAVE_REGS(CLBR_RDI) +#endif + + mov %cs,%rdi + cmp $__KERNEXEC_KERNEL_CS,%edi + jz 2f +1: + +#ifdef CONFIG_PARAVIRT + PV_RESTORE_REGS(CLBR_RDI); +#endif + + popq %rdi + pax_force_retaddr + retq + +2: GET_CR0_INTO_RDI + btr $16,%rdi + ljmpq __KERNEL_CS,3f +3: SET_RDI_INTO_CR0 + jmp 1b +#ifdef CONFIG_PARAVIRT + PV_RESTORE_REGS(CLBR_RDI); +#endif + + popq %rdi + pax_force_retaddr + retq +ENDPROC(pax_exit_kernel) +#endif + + .macro pax_enter_kernel_user + pax_set_fptr_mask +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_enter_kernel_user +#endif + .endm + + .macro pax_exit_kernel_user +#ifdef CONFIG_PAX_MEMORY_UDEREF + call pax_exit_kernel_user +#endif +#ifdef CONFIG_PAX_RANDKSTACK + pushq %rax + call pax_randomize_kstack + popq %rax +#endif + .endm + +#ifdef CONFIG_PAX_MEMORY_UDEREF +ENTRY(pax_enter_kernel_user) + pushq %rdi + pushq %rbx + +#ifdef CONFIG_PARAVIRT + PV_SAVE_REGS(CLBR_RDI) +#endif + + GET_CR3_INTO_RDI + mov %rdi,%rbx + add $__START_KERNEL_map,%rbx + sub phys_base(%rip),%rbx + +#ifdef CONFIG_PARAVIRT + pushq %rdi + cmpl $0, pv_info+PARAVIRT_enabled + jz 1f + i = 0 + .rept USER_PGD_PTRS + mov i*8(%rbx),%rsi + mov $0,%sil + lea i*8(%rbx),%rdi + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched) + i = i + 1 + .endr + jmp 2f +1: +#endif + + i = 0 + .rept USER_PGD_PTRS + movb $0,i*8(%rbx) + i = i + 1 + .endr + +#ifdef CONFIG_PARAVIRT +2: popq %rdi +#endif + SET_RDI_INTO_CR3 + +#ifdef CONFIG_PAX_KERNEXEC + GET_CR0_INTO_RDI + bts $16,%rdi + SET_RDI_INTO_CR0 +#endif + +#ifdef CONFIG_PARAVIRT + PV_RESTORE_REGS(CLBR_RDI) +#endif + + popq %rbx + popq %rdi + pax_force_retaddr + retq +ENDPROC(pax_enter_kernel_user) + +ENTRY(pax_exit_kernel_user) + push %rdi + +#ifdef CONFIG_PARAVIRT + pushq %rbx + PV_SAVE_REGS(CLBR_RDI) +#endif + +#ifdef CONFIG_PAX_KERNEXEC + GET_CR0_INTO_RDI + btr $16,%rdi + SET_RDI_INTO_CR0 +#endif + + GET_CR3_INTO_RDI + add $__START_KERNEL_map,%rdi + sub phys_base(%rip),%rdi + +#ifdef CONFIG_PARAVIRT + cmpl $0, pv_info+PARAVIRT_enabled + jz 1f + mov %rdi,%rbx + i = 0 + .rept USER_PGD_PTRS + mov i*8(%rbx),%rsi + mov $0x67,%sil + lea i*8(%rbx),%rdi + call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched) + i = i + 1 + .endr + jmp 2f +1: +#endif + + i = 0 + .rept USER_PGD_PTRS + movb $0x67,i*8(%rdi) + i = i + 1 + .endr + +#ifdef CONFIG_PARAVIRT +2: PV_RESTORE_REGS(CLBR_RDI) + popq %rbx +#endif + + popq %rdi + pax_force_retaddr + retq +ENDPROC(pax_exit_kernel_user) +#endif + +.macro pax_erase_kstack +#ifdef CONFIG_PAX_MEMORY_STACKLEAK + call pax_erase_kstack +#endif +.endm + +#ifdef CONFIG_PAX_MEMORY_STACKLEAK +ENTRY(pax_erase_kstack) + pushq %rdi + pushq %rcx + pushq %rax + pushq %r11 + + GET_THREAD_INFO(%r11) + mov TI_lowest_stack(%r11), %rdi + mov $0xB4DD00D5BADBABE5, %rax + std + +1: mov %edi, %ecx + and $THREAD_SIZE_asm - 1, %ecx + shr $3, %ecx + repne scasq + jecxz 2f + + cmp $2*8, %ecx + jc 2f + + mov $2*8, %ecx + repe scasq + jecxz 2f + jne 1b + +2: cld + mov %esp, %ecx + sub %edi, %ecx + + cmp $THREAD_SIZE_asm, %rcx + jb 3f + ud2 +3: + + shr $3, %ecx + rep stosq + + mov TI_task_thread_sp0(%r11), %rdi + sub $256, %rdi + mov %rdi, TI_lowest_stack(%r11) + + popq %r11 + popq %rax + popq %rcx + popq %rdi + pax_force_retaddr + ret +ENDPROC(pax_erase_kstack) +#endif .macro TRACE_IRQS_IRETQ offset=ARGOFFSET #ifdef CONFIG_TRACE_IRQFLAGS @@ -233,8 +515,8 @@ ENDPROC(native_usergs_sysret64) .endm .macro UNFAKE_STACK_FRAME - addq $8*6, %rsp - CFI_ADJUST_CFA_OFFSET -(6*8) + addq $8*6 + ARG_SKIP, %rsp + CFI_ADJUST_CFA_OFFSET -(6*8 + ARG_SKIP) .endm /* @@ -317,7 +599,7 @@ ENTRY(save_args) leaq -ARGOFFSET+16(%rsp),%rdi /* arg1 for handler */ movq_cfi rbp, 8 /* push %rbp */ leaq 8(%rsp), %rbp /* mov %rsp, %ebp */ - testl $3, CS(%rdi) + testb $3, CS(%rdi) je 1f SWAPGS /* @@ -337,9 +619,10 @@ ENTRY(save_args) * We entered an interrupt context - irqs are off: */ 2: TRACE_IRQS_OFF + pax_force_retaddr_bts ret CFI_ENDPROC -END(save_args) +ENDPROC(save_args) ENTRY(save_rest) PARTIAL_FRAME 1 REST_SKIP+8 @@ -352,9 +635,10 @@ ENTRY(save_rest) movq_cfi r15, R15+16 movq %r11, 8(%rsp) /* return address */ FIXUP_TOP_OF_STACK %r11, 16 + pax_force_retaddr ret CFI_ENDPROC -END(save_rest) +ENDPROC(save_rest) /* save complete stack frame */ .pushsection .kprobes.text, "ax" @@ -383,9 +667,10 @@ ENTRY(save_paranoid) js 1f /* negative -> in kernel */ SWAPGS xorl %ebx,%ebx -1: ret +1: pax_force_retaddr_bts + ret CFI_ENDPROC -END(save_paranoid) +ENDPROC(save_paranoid) .popsection /* @@ -409,7 +694,7 @@ ENTRY(ret_from_fork) RESTORE_REST - testl $3, CS-ARGOFFSET(%rsp) # from kernel_thread? + testb $3, CS-ARGOFFSET(%rsp) # from kernel_thread? je int_ret_from_sys_call testl $_TIF_IA32, TI_flags(%rcx) # 32-bit compat task needs IRET @@ -419,7 +704,7 @@ ENTRY(ret_from_fork) jmp ret_from_sys_call # go to the SYSRET fastpath CFI_ENDPROC -END(ret_from_fork) +ENDPROC(ret_from_fork) /* * System call entry. Upto 6 arguments in registers are supported. @@ -455,7 +740,7 @@ END(ret_from_fork) ENTRY(system_call) CFI_STARTPROC simple CFI_SIGNAL_FRAME - CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET + CFI_DEF_CFA rsp,0 CFI_REGISTER rip,rcx /*CFI_REGISTER rflags,r11*/ SWAPGS_UNSAFE_STACK @@ -468,12 +753,18 @@ ENTRY(system_call_after_swapgs) movq %rsp,PER_CPU_VAR(old_rsp) movq PER_CPU_VAR(kernel_stack),%rsp + SAVE_ARGS 8*6,1 + pax_enter_kernel_user + +#ifdef CONFIG_PAX_RANDKSTACK + pax_erase_kstack +#endif + /* * No need to follow this irqs off/on section - it's straight * and short: */ ENABLE_INTERRUPTS(CLBR_NONE) - SAVE_ARGS 8,1 movq %rax,ORIG_RAX-ARGOFFSET(%rsp) movq %rcx,RIP-ARGOFFSET(%rsp) CFI_REL_OFFSET rip,RIP-ARGOFFSET @@ -483,7 +774,7 @@ ENTRY(system_call_after_swapgs) system_call_fastpath: cmpq $__NR_syscall_max,%rax ja badsys - movq %r10,%rcx + movq R10-ARGOFFSET(%rsp),%rcx call *sys_call_table(,%rax,8) # XXX: rip relative movq %rax,RAX-ARGOFFSET(%rsp) /* @@ -502,6 +793,8 @@ sysret_check: andl %edi,%edx jnz sysret_careful CFI_REMEMBER_STATE + pax_exit_kernel_user + pax_erase_kstack /* * sysretq will re-enable interrupts: */ @@ -555,14 +848,18 @@ badsys: * jump back to the normal fast path. */ auditsys: - movq %r10,%r9 /* 6th arg: 4th syscall arg */ + movq R10-ARGOFFSET(%rsp),%r9 /* 6th arg: 4th syscall arg */ movq %rdx,%r8 /* 5th arg: 3rd syscall arg */ movq %rsi,%rcx /* 4th arg: 2nd syscall arg */ movq %rdi,%rdx /* 3rd arg: 1st syscall arg */ movq %rax,%rsi /* 2nd arg: syscall number */ movl $AUDIT_ARCH_X86_64,%edi /* 1st arg: audit arch */ call audit_syscall_entry + + pax_erase_kstack + LOAD_ARGS 0 /* reload call-clobbered registers */ + pax_set_fptr_mask jmp system_call_fastpath /* @@ -592,16 +889,20 @@ tracesys: FIXUP_TOP_OF_STACK %rdi movq %rsp,%rdi call syscall_trace_enter + + pax_erase_kstack + /* * Reload arg registers from stack in case ptrace changed them. * We don't reload %rax because syscall_trace_enter() returned * the value it wants us to use in the table lookup. */ LOAD_ARGS ARGOFFSET, 1 + pax_set_fptr_mask RESTORE_REST cmpq $__NR_syscall_max,%rax ja int_ret_from_sys_call /* RAX(%rsp) set to -ENOSYS above */ - movq %r10,%rcx /* fixup for C */ + movq R10-ARGOFFSET(%rsp),%rcx /* fixup for C */ call *sys_call_table(,%rax,8) movq %rax,RAX-ARGOFFSET(%rsp) /* Use IRET because user could have changed frame */ @@ -613,7 +914,7 @@ tracesys: GLOBAL(int_ret_from_sys_call) DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF - testl $3,CS-ARGOFFSET(%rsp) + testb $3,CS-ARGOFFSET(%rsp) je retint_restore_args movl $_TIF_ALLWORK_MASK,%edi /* edi: mask to check */ @@ -624,7 +925,9 @@ GLOBAL(int_with_check) andl %edi,%edx jnz int_careful andl $~TS_COMPAT,TI_status(%rcx) - jmp retint_swapgs + pax_exit_kernel_user + pax_erase_kstack + jmp retint_swapgs_pax /* Either reschedule or signal or syscall exit tracking needed. */ /* First do a reschedule test. */ @@ -674,7 +977,7 @@ int_restore_rest: TRACE_IRQS_OFF jmp int_with_check CFI_ENDPROC -END(system_call) +ENDPROC(system_call) /* * Certain special system calls that need to save a complete full stack frame. @@ -690,7 +993,7 @@ ENTRY(\label) call \func jmp ptregscall_common CFI_ENDPROC -END(\label) +ENDPROC(\label) .endm PTREGSCALL stub_clone, sys_clone, %r8 @@ -708,9 +1011,10 @@ ENTRY(ptregscall_common) movq_cfi_restore R12+8, r12 movq_cfi_restore RBP+8, rbp movq_cfi_restore RBX+8, rbx + pax_force_retaddr ret $REST_SKIP /* pop extended registers */ CFI_ENDPROC -END(ptregscall_common) +ENDPROC(ptregscall_common) ENTRY(stub_execve) CFI_STARTPROC @@ -726,7 +1030,7 @@ ENTRY(stub_execve) RESTORE_REST jmp int_ret_from_sys_call CFI_ENDPROC -END(stub_execve) +ENDPROC(stub_execve) /* * sigreturn is special because it needs to restore all registers on return. @@ -744,7 +1048,7 @@ ENTRY(stub_rt_sigreturn) RESTORE_REST jmp int_ret_from_sys_call CFI_ENDPROC -END(stub_rt_sigreturn) +ENDPROC(stub_rt_sigreturn) /* * Build the entry stubs and pointer table with some assembler magic. @@ -780,7 +1084,7 @@ vector=vector+1 2: jmp common_interrupt .endr CFI_ENDPROC -END(irq_entries_start) +ENDPROC(irq_entries_start) .previous END(interrupt) @@ -800,6 +1104,16 @@ END(interrupt) CFI_ADJUST_CFA_OFFSET 10*8 call save_args PARTIAL_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rdi) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif call \func .endm @@ -822,7 +1136,7 @@ ret_from_intr: CFI_ADJUST_CFA_OFFSET -8 exit_intr: GET_THREAD_INFO(%rcx) - testl $3,CS-ARGOFFSET(%rsp) + testb $3,CS-ARGOFFSET(%rsp) je retint_kernel /* Interrupt came from user space */ @@ -844,12 +1158,16 @@ retint_swapgs: /* return to user-space * The iretq could re-enable interrupts: */ DISABLE_INTERRUPTS(CLBR_ANY) + pax_exit_kernel_user +retint_swapgs_pax: TRACE_IRQS_IRETQ SWAPGS jmp restore_args retint_restore_args: /* return to kernel space */ DISABLE_INTERRUPTS(CLBR_ANY) + pax_exit_kernel + pax_force_retaddr RIP-ARGOFFSET /* * The iretq could re-enable interrupts: */ @@ -940,7 +1258,7 @@ ENTRY(retint_kernel) #endif CFI_ENDPROC -END(common_interrupt) +ENDPROC(common_interrupt) /* * APIC interrupts. @@ -953,7 +1271,7 @@ ENTRY(\sym) interrupt \do_sym jmp ret_from_intr CFI_ENDPROC -END(\sym) +ENDPROC(\sym) .endm #ifdef CONFIG_SMP @@ -1032,12 +1350,22 @@ ENTRY(\sym) CFI_ADJUST_CFA_OFFSET 15*8 call error_entry DEFAULT_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ call \do_sym jmp error_exit /* %ebx: no swapgs flag */ CFI_ENDPROC -END(\sym) +ENDPROC(\sym) .endm .macro paranoidzeroentry sym do_sym @@ -1049,12 +1377,22 @@ ENTRY(\sym) subq $15*8, %rsp call save_paranoid TRACE_IRQS_OFF +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ call \do_sym jmp paranoid_exit /* %ebx: no swapgs flag */ CFI_ENDPROC -END(\sym) +ENDPROC(\sym) .endm .macro paranoidzeroentry_ist sym do_sym ist @@ -1066,15 +1404,30 @@ ENTRY(\sym) subq $15*8, %rsp call save_paranoid TRACE_IRQS_OFF +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ xorl %esi,%esi /* no error code */ - PER_CPU(init_tss, %rbp) +#ifdef CONFIG_SMP + imul $TSS_size, PER_CPU_VAR(cpu_number), %ebp + lea init_tss(%rbp), %rbp +#else + lea init_tss(%rip), %rbp +#endif subq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%rbp) call \do_sym addq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%rbp) jmp paranoid_exit /* %ebx: no swapgs flag */ CFI_ENDPROC -END(\sym) +ENDPROC(\sym) .endm .macro errorentry sym do_sym @@ -1085,13 +1438,23 @@ ENTRY(\sym) CFI_ADJUST_CFA_OFFSET 15*8 call error_entry DEFAULT_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ movq ORIG_RAX(%rsp),%rsi /* get error code */ movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ call \do_sym jmp error_exit /* %ebx: no swapgs flag */ CFI_ENDPROC -END(\sym) +ENDPROC(\sym) .endm /* error code is on the stack already */ @@ -1104,13 +1467,23 @@ ENTRY(\sym) call save_paranoid DEFAULT_FRAME 0 TRACE_IRQS_OFF +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif movq %rsp,%rdi /* pt_regs pointer */ movq ORIG_RAX(%rsp),%rsi /* get error code */ movq $-1,ORIG_RAX(%rsp) /* no syscall to restart */ call \do_sym jmp paranoid_exit /* %ebx: no swapgs flag */ CFI_ENDPROC -END(\sym) +ENDPROC(\sym) .endm zeroentry divide_error do_divide_error @@ -1141,9 +1514,10 @@ gs_change: SWAPGS popf CFI_ADJUST_CFA_OFFSET -8 + pax_force_retaddr ret CFI_ENDPROC -END(native_load_gs_index) +ENDPROC(native_load_gs_index) .section __ex_table,"a" .align 8 @@ -1193,11 +1567,12 @@ ENTRY(kernel_thread) * of hacks for example to fork off the per-CPU idle tasks. * [Hopefully no generic code relies on the reschedule -AK] */ - RESTORE_ALL + RESTORE_REST UNFAKE_STACK_FRAME + pax_force_retaddr ret CFI_ENDPROC -END(kernel_thread) +ENDPROC(kernel_thread) ENTRY(child_rip) pushq $0 # fake return address @@ -1208,13 +1583,14 @@ ENTRY(child_rip) */ movq %rdi, %rax movq %rsi, %rdi + pax_force_fptr %rax call *%rax # exit mov %eax, %edi call do_exit ud2 # padding for call trace CFI_ENDPROC -END(child_rip) +ENDPROC(child_rip) /* * execve(). This function needs to use IRET, not SYSRET, to set up all state properly. @@ -1241,11 +1617,11 @@ ENTRY(kernel_execve) RESTORE_REST testq %rax,%rax je int_ret_from_sys_call - RESTORE_ARGS UNFAKE_STACK_FRAME + pax_force_retaddr ret CFI_ENDPROC -END(kernel_execve) +ENDPROC(kernel_execve) /* Call softirq on interrupt stack. Interrupts are off. */ ENTRY(call_softirq) @@ -1263,9 +1639,10 @@ ENTRY(call_softirq) CFI_DEF_CFA_REGISTER rsp CFI_ADJUST_CFA_OFFSET -8 decl PER_CPU_VAR(irq_count) + pax_force_retaddr ret CFI_ENDPROC -END(call_softirq) +ENDPROC(call_softirq) #ifdef CONFIG_XEN zeroentry xen_hypervisor_callback xen_do_hypervisor_callback @@ -1303,7 +1680,7 @@ ENTRY(xen_do_hypervisor_callback) # do decl PER_CPU_VAR(irq_count) jmp error_exit CFI_ENDPROC -END(xen_do_hypervisor_callback) +ENDPROC(xen_do_hypervisor_callback) /* * Hypervisor uses this for application faults while it executes. @@ -1362,7 +1739,7 @@ ENTRY(xen_failsafe_callback) SAVE_ALL jmp error_exit CFI_ENDPROC -END(xen_failsafe_callback) +ENDPROC(xen_failsafe_callback) #endif /* CONFIG_XEN */ @@ -1405,16 +1782,31 @@ ENTRY(paranoid_exit) TRACE_IRQS_OFF testl %ebx,%ebx /* swapgs needed? */ jnz paranoid_restore - testl $3,CS(%rsp) + testb $3,CS(%rsp) jnz paranoid_userspace +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel + TRACE_IRQS_IRETQ 0 + SWAPGS_UNSAFE_STACK + RESTORE_ALL 8 + pax_force_retaddr_bts + jmp irq_return +#endif paranoid_swapgs: +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel_user +#else + pax_exit_kernel +#endif TRACE_IRQS_IRETQ 0 SWAPGS_UNSAFE_STACK RESTORE_ALL 8 jmp irq_return paranoid_restore: + pax_exit_kernel TRACE_IRQS_IRETQ 0 RESTORE_ALL 8 + pax_force_retaddr_bts jmp irq_return paranoid_userspace: GET_THREAD_INFO(%rcx) @@ -1443,7 +1835,7 @@ paranoid_schedule: TRACE_IRQS_OFF jmp paranoid_userspace CFI_ENDPROC -END(paranoid_exit) +ENDPROC(paranoid_exit) /* * Exception entry point. This expects an error code/orig_rax on the stack. @@ -1470,12 +1862,13 @@ ENTRY(error_entry) movq_cfi r14, R14+8 movq_cfi r15, R15+8 xorl %ebx,%ebx - testl $3,CS+8(%rsp) + testb $3,CS+8(%rsp) je error_kernelspace error_swapgs: SWAPGS error_sti: TRACE_IRQS_OFF + pax_force_retaddr_bts ret CFI_ENDPROC @@ -1497,7 +1890,7 @@ error_kernelspace: cmpq $gs_change,RIP+8(%rsp) je error_swapgs jmp error_sti -END(error_entry) +ENDPROC(error_entry) /* ebx: no swapgs flag (1: don't need swapgs, 0: need it) */ @@ -1517,7 +1910,7 @@ ENTRY(error_exit) jnz retint_careful jmp retint_swapgs CFI_ENDPROC -END(error_exit) +ENDPROC(error_exit) /* runs on exception stack */ @@ -1529,6 +1922,16 @@ ENTRY(nmi) CFI_ADJUST_CFA_OFFSET 15*8 call save_paranoid DEFAULT_FRAME 0 +#ifdef CONFIG_PAX_MEMORY_UDEREF + testb $3, CS(%rsp) + jnz 1f + pax_enter_kernel + jmp 2f +1: pax_enter_kernel_user +2: +#else + pax_enter_kernel +#endif /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */ movq %rsp,%rdi movq $-1,%rsi @@ -1539,12 +1942,28 @@ ENTRY(nmi) DISABLE_INTERRUPTS(CLBR_NONE) testl %ebx,%ebx /* swapgs needed? */ jnz nmi_restore - testl $3,CS(%rsp) + testb $3,CS(%rsp) jnz nmi_userspace +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel + SWAPGS_UNSAFE_STACK + RESTORE_ALL 8 + pax_force_retaddr_bts + jmp irq_return +#endif nmi_swapgs: +#ifdef CONFIG_PAX_MEMORY_UDEREF + pax_exit_kernel_user +#else + pax_exit_kernel +#endif SWAPGS_UNSAFE_STACK + RESTORE_ALL 8 + jmp irq_return nmi_restore: + pax_exit_kernel RESTORE_ALL 8 + pax_force_retaddr_bts jmp irq_return nmi_userspace: GET_THREAD_INFO(%rcx) @@ -1573,14 +1992,14 @@ nmi_schedule: jmp paranoid_exit CFI_ENDPROC #endif -END(nmi) +ENDPROC(nmi) ENTRY(ignore_sysret) CFI_STARTPROC mov $-ENOSYS,%eax sysret CFI_ENDPROC -END(ignore_sysret) +ENDPROC(ignore_sysret) /* * End of kprobes section diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/ftrace.c linux-2.6.32.59-pax/arch/x86/kernel/ftrace.c --- linux-2.6.32.59/arch/x86/kernel/ftrace.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/ftrace.c 2012-03-13 13:15:34.536098022 +0100 @@ -103,7 +103,7 @@ static void *mod_code_ip; /* holds the static void *mod_code_newcode; /* holds the text to write to the IP */ static unsigned nmi_wait_count; -static atomic_t nmi_update_count = ATOMIC_INIT(0); +static atomic_unchecked_t nmi_update_count = ATOMIC_INIT(0); int ftrace_arch_read_dyn_info(char *buf, int size) { @@ -111,7 +111,7 @@ int ftrace_arch_read_dyn_info(char *buf, r = snprintf(buf, size, "%u %u", nmi_wait_count, - atomic_read(&nmi_update_count)); + atomic_read_unchecked(&nmi_update_count)); return r; } @@ -149,8 +149,10 @@ void ftrace_nmi_enter(void) { if (atomic_inc_return(&nmi_running) & MOD_CODE_WRITE_FLAG) { smp_rmb(); + pax_open_kernel(); ftrace_mod_code(); - atomic_inc(&nmi_update_count); + pax_close_kernel(); + atomic_inc_unchecked(&nmi_update_count); } /* Must have previous changes seen before executions */ smp_mb(); @@ -215,7 +217,7 @@ do_ftrace_mod_code(unsigned long ip, voi -static unsigned char ftrace_nop[MCOUNT_INSN_SIZE]; +static unsigned char ftrace_nop[MCOUNT_INSN_SIZE] __read_only; static unsigned char *ftrace_nop_replace(void) { @@ -228,6 +230,8 @@ ftrace_modify_code(unsigned long ip, uns { unsigned char replaced[MCOUNT_INSN_SIZE]; + ip = ktla_ktva(ip); + /* * Note: Due to modules and __init, code can * disappear and change, we need to protect against faulting @@ -284,7 +288,7 @@ int ftrace_update_ftrace_func(ftrace_fun unsigned char old[MCOUNT_INSN_SIZE], *new; int ret; - memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE); + memcpy(old, (void *)ktla_ktva((unsigned long)ftrace_call), MCOUNT_INSN_SIZE); new = ftrace_call_replace(ip, (unsigned long)func); ret = ftrace_modify_code(ip, old, new); @@ -337,15 +341,15 @@ int __init ftrace_dyn_arch_init(void *da switch (faulted) { case 0: pr_info("ftrace: converting mcount calls to 0f 1f 44 00 00\n"); - memcpy(ftrace_nop, ftrace_test_p6nop, MCOUNT_INSN_SIZE); + memcpy(ftrace_nop, ktla_ktva(ftrace_test_p6nop), MCOUNT_INSN_SIZE); break; case 1: pr_info("ftrace: converting mcount calls to 66 66 66 66 90\n"); - memcpy(ftrace_nop, ftrace_test_nop5, MCOUNT_INSN_SIZE); + memcpy(ftrace_nop, ktla_ktva(ftrace_test_nop5), MCOUNT_INSN_SIZE); break; case 2: pr_info("ftrace: converting mcount calls to jmp . + 5\n"); - memcpy(ftrace_nop, ftrace_test_jmp, MCOUNT_INSN_SIZE); + memcpy(ftrace_nop, ktla_ktva(ftrace_test_jmp), MCOUNT_INSN_SIZE); break; } @@ -366,6 +370,8 @@ static int ftrace_mod_jmp(unsigned long { unsigned char code[MCOUNT_INSN_SIZE]; + ip = ktla_ktva(ip); + if (probe_kernel_read(code, (void *)ip, MCOUNT_INSN_SIZE)) return -EFAULT; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/head32.c linux-2.6.32.59-pax/arch/x86/kernel/head32.c --- linux-2.6.32.59/arch/x86/kernel/head32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/head32.c 2012-03-13 13:15:34.536098022 +0100 @@ -16,6 +16,7 @@ #include #include #include +#include static void __init i386_default_early_setup(void) { @@ -31,7 +32,7 @@ void __init i386_start_kernel(void) { reserve_trampoline_memory(); - reserve_early(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS"); + reserve_early(LOAD_PHYSICAL_ADDR, __pa_symbol(&__bss_stop), "TEXT DATA BSS"); #ifdef CONFIG_BLK_DEV_INITRD /* Reserve INITRD */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/head_32.S linux-2.6.32.59-pax/arch/x86/kernel/head_32.S --- linux-2.6.32.59/arch/x86/kernel/head_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/head_32.S 2012-03-13 13:15:34.540098022 +0100 @@ -19,10 +19,17 @@ #include #include #include +#include /* Physical address */ #define pa(X) ((X) - __PAGE_OFFSET) +#ifdef CONFIG_PAX_KERNEXEC +#define ta(X) (X) +#else +#define ta(X) ((X) - __PAGE_OFFSET) +#endif + /* * References to members of the new_cpu_data structure. */ @@ -52,11 +59,7 @@ * and small than max_low_pfn, otherwise will waste some page table entries */ -#if PTRS_PER_PMD > 1 -#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD) -#else -#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD) -#endif +#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PTE) /* Enough space to fit pagetables for the low memory linear map */ MAPPING_BEYOND_END = \ @@ -73,6 +76,12 @@ INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_P RESERVE_BRK(pagetables, INIT_MAP_SIZE) /* + * Real beginning of normal "text" segment + */ +ENTRY(stext) +ENTRY(_stext) + +/* * 32-bit kernel entrypoint; only used by the boot CPU. On entry, * %esi points to the real-mode code as a 32-bit pointer. * CS and DS must be 4 GB flat segments, but we don't depend on @@ -80,6 +89,13 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE) * can. */ __HEAD + +#ifdef CONFIG_PAX_KERNEXEC + jmp startup_32 +/* PaX: fill first page in .text with int3 to catch NULL derefs in kernel mode */ +.fill PAGE_SIZE-5,1,0xcc +#endif + ENTRY(startup_32) /* test KEEP_SEGMENTS flag to see if the bootloader is asking us to not reload segments */ @@ -97,6 +113,57 @@ ENTRY(startup_32) movl %eax,%gs 2: +#ifdef CONFIG_SMP + movl $pa(cpu_gdt_table),%edi + movl $__per_cpu_load,%eax + movw %ax,__KERNEL_PERCPU + 2(%edi) + rorl $16,%eax + movb %al,__KERNEL_PERCPU + 4(%edi) + movb %ah,__KERNEL_PERCPU + 7(%edi) + movl $__per_cpu_end - 1,%eax + subl $__per_cpu_start,%eax + movw %ax,__KERNEL_PERCPU + 0(%edi) +#endif + +#ifdef CONFIG_PAX_MEMORY_UDEREF + movl $NR_CPUS,%ecx + movl $pa(cpu_gdt_table),%edi +1: + movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c09700),GDT_ENTRY_KERNEL_DS * 8 + 4(%edi) + movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0fb00),GDT_ENTRY_DEFAULT_USER_CS * 8 + 4(%edi) + movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0f300),GDT_ENTRY_DEFAULT_USER_DS * 8 + 4(%edi) + addl $PAGE_SIZE_asm,%edi + loop 1b +#endif + +#ifdef CONFIG_PAX_KERNEXEC + movl $pa(boot_gdt),%edi + movl $__LOAD_PHYSICAL_ADDR,%eax + movw %ax,__BOOT_CS + 2(%edi) + rorl $16,%eax + movb %al,__BOOT_CS + 4(%edi) + movb %ah,__BOOT_CS + 7(%edi) + rorl $16,%eax + + ljmp $(__BOOT_CS),$1f +1: + + movl $NR_CPUS,%ecx + movl $pa(cpu_gdt_table),%edi + addl $__PAGE_OFFSET,%eax +1: + movw %ax,__KERNEL_CS + 2(%edi) + movw %ax,__KERNEXEC_KERNEL_CS + 2(%edi) + rorl $16,%eax + movb %al,__KERNEL_CS + 4(%edi) + movb %al,__KERNEXEC_KERNEL_CS + 4(%edi) + movb %ah,__KERNEL_CS + 7(%edi) + movb %ah,__KERNEXEC_KERNEL_CS + 7(%edi) + rorl $16,%eax + addl $PAGE_SIZE_asm,%edi + loop 1b +#endif + /* * Clear BSS first so that there are no surprises... */ @@ -140,9 +207,7 @@ ENTRY(startup_32) cmpl $num_subarch_entries, %eax jae bad_subarch - movl pa(subarch_entries)(,%eax,4), %eax - subl $__PAGE_OFFSET, %eax - jmp *%eax + jmp *pa(subarch_entries)(,%eax,4) bad_subarch: WEAK(lguest_entry) @@ -154,10 +219,10 @@ WEAK(xen_entry) __INITDATA subarch_entries: - .long default_entry /* normal x86/PC */ - .long lguest_entry /* lguest hypervisor */ - .long xen_entry /* Xen hypervisor */ - .long default_entry /* Moorestown MID */ + .long ta(default_entry) /* normal x86/PC */ + .long ta(lguest_entry) /* lguest hypervisor */ + .long ta(xen_entry) /* Xen hypervisor */ + .long ta(default_entry) /* Moorestown MID */ num_subarch_entries = (. - subarch_entries) / 4 .previous #endif /* CONFIG_PARAVIRT */ @@ -218,8 +283,11 @@ default_entry: movl %eax, pa(max_pfn_mapped) /* Do early initialization of the fixmap area */ - movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,%eax - movl %eax,pa(swapper_pg_pmd+0x1000*KPMDS-8) +#ifdef CONFIG_COMPAT_VDSO + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(swapper_pg_pmd+0x1000*KPMDS-8) +#else + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,pa(swapper_pg_pmd+0x1000*KPMDS-8) +#endif #else /* Not PAE */ page_pde_offset = (__PAGE_OFFSET >> 20); @@ -249,8 +317,11 @@ page_pde_offset = (__PAGE_OFFSET >> 20); movl %eax, pa(max_pfn_mapped) /* Do early initialization of the fixmap area */ - movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,%eax - movl %eax,pa(swapper_pg_dir+0xffc) +#ifdef CONFIG_COMPAT_VDSO + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(swapper_pg_dir+0xffc) +#else + movl $pa(swapper_pg_fixmap)+PDE_IDENT_ATTR,pa(swapper_pg_dir+0xffc) +#endif #endif jmp 3f /* @@ -297,6 +368,7 @@ ENTRY(startup_32_smp) orl %edx,%eax movl %eax,%cr4 +#ifdef CONFIG_X86_PAE btl $5, %eax # check if PAE is enabled jnc 6f @@ -312,13 +384,17 @@ ENTRY(startup_32_smp) jnc 6f /* Setup EFER (Extended Feature Enable Register) */ - movl $0xc0000080, %ecx + movl $MSR_EFER, %ecx rdmsr btsl $11, %eax /* Make changes effective */ wrmsr + btsl $_PAGE_BIT_NX-32,pa(__supported_pte_mask+4) + movl $1,pa(nx_enabled) +#endif + 6: /* @@ -344,9 +420,7 @@ ENTRY(startup_32_smp) #ifdef CONFIG_SMP cmpb $0, ready - jz 1f /* Initial CPU cleans BSS */ - jmp checkCPUtype -1: + jnz checkCPUtype /* Initial CPU cleans BSS */ #endif /* CONFIG_SMP */ /* @@ -424,7 +498,7 @@ is386: movl $2,%ecx # set MP 1: movl $(__KERNEL_DS),%eax # reload all the segment registers movl %eax,%ss # after changing gdt. - movl $(__USER_DS),%eax # DS/ES contains default USER segment +# movl $(__KERNEL_DS),%eax # DS/ES contains default KERNEL segment movl %eax,%ds movl %eax,%es @@ -438,15 +512,22 @@ is386: movl $2,%ecx # set MP */ cmpb $0,ready jne 1f - movl $per_cpu__gdt_page,%eax + movl $cpu_gdt_table,%eax movl $per_cpu__stack_canary,%ecx +#ifdef CONFIG_SMP + addl $__per_cpu_load,%ecx +#endif movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax) shrl $16, %ecx movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax) movb %ch, 8 * GDT_ENTRY_STACK_CANARY + 7(%eax) 1: -#endif movl $(__KERNEL_STACK_CANARY),%eax +#elif defined(CONFIG_PAX_MEMORY_UDEREF) + movl $(__USER_DS),%eax +#else + xorl %eax,%eax +#endif movl %eax,%gs xorl %eax,%eax # Clear LDT @@ -457,10 +538,6 @@ is386: movl $2,%ecx # set MP #ifdef CONFIG_SMP movb ready, %cl movb $1, ready - cmpb $0,%cl # the first CPU calls start_kernel - je 1f - movl (stack_start), %esp -1: #endif /* CONFIG_SMP */ jmp *(initial_code) @@ -546,22 +623,22 @@ early_page_fault: jmp early_fault early_fault: - cld #ifdef CONFIG_PRINTK + cmpl $1,%ss:early_recursion_flag + je hlt_loop + incl %ss:early_recursion_flag + cld pusha movl $(__KERNEL_DS),%eax movl %eax,%ds movl %eax,%es - cmpl $2,early_recursion_flag - je hlt_loop - incl early_recursion_flag movl %cr2,%eax pushl %eax pushl %edx /* trapno */ pushl $fault_msg call printk +; call dump_stack #endif - call dump_stack hlt_loop: hlt jmp hlt_loop @@ -569,8 +646,11 @@ hlt_loop: /* This is the default interrupt "handler" :-) */ ALIGN ignore_int: - cld #ifdef CONFIG_PRINTK + cmpl $2,%ss:early_recursion_flag + je hlt_loop + incl %ss:early_recursion_flag + cld pushl %eax pushl %ecx pushl %edx @@ -579,9 +659,6 @@ ignore_int: movl $(__KERNEL_DS),%eax movl %eax,%ds movl %eax,%es - cmpl $2,early_recursion_flag - je hlt_loop - incl early_recursion_flag pushl 16(%esp) pushl 24(%esp) pushl 32(%esp) @@ -610,31 +687,47 @@ ENTRY(initial_page_table) /* * BSS section */ -__PAGE_ALIGNED_BSS - .align PAGE_SIZE_asm #ifdef CONFIG_X86_PAE +.section .swapper_pg_pmd,"a",@progbits swapper_pg_pmd: .fill 1024*KPMDS,4,0 #else +.section .swapper_pg_dir,"a",@progbits ENTRY(swapper_pg_dir) .fill 1024,4,0 #endif +.section .swapper_pg_fixmap,"a",@progbits swapper_pg_fixmap: .fill 1024,4,0 #ifdef CONFIG_X86_TRAMPOLINE +.section .trampoline_pg_dir,"a",@progbits ENTRY(trampoline_pg_dir) +#ifdef CONFIG_X86_PAE + .fill 4,8,0 +#else .fill 1024,4,0 #endif +#endif + +.section .empty_zero_page,"a",@progbits ENTRY(empty_zero_page) .fill 4096,1,0 /* + * The IDT has to be page-aligned to simplify the Pentium + * F0 0F bug workaround.. We have a special link segment + * for this. + */ +.section .idt,"a",@progbits +ENTRY(idt_table) + .fill 256,8,0 + +/* * This starts the data section. */ #ifdef CONFIG_X86_PAE -__PAGE_ALIGNED_DATA - /* Page-aligned for the benefit of paravirt? */ - .align PAGE_SIZE_asm +.section .swapper_pg_dir,"a",@progbits + ENTRY(swapper_pg_dir) .long pa(swapper_pg_pmd+PGD_IDENT_ATTR),0 /* low identity map */ # if KPMDS == 3 @@ -653,15 +746,24 @@ ENTRY(swapper_pg_dir) # error "Kernel PMDs should be 1, 2 or 3" # endif .align PAGE_SIZE_asm /* needs to be page-sized too */ + +#ifdef CONFIG_PAX_PER_CPU_PGD +ENTRY(cpu_pgd) + .rept NR_CPUS + .fill 4,8,0 + .endr +#endif + #endif .data ENTRY(stack_start) - .long init_thread_union+THREAD_SIZE + .long init_thread_union+THREAD_SIZE-8 .long __BOOT_DS ready: .byte 0 +.section .rodata,"a",@progbits early_recursion_flag: .long 0 @@ -697,7 +799,7 @@ fault_msg: .word 0 # 32 bit align gdt_desc.address boot_gdt_descr: .word __BOOT_DS+7 - .long boot_gdt - __PAGE_OFFSET + .long pa(boot_gdt) .word 0 # 32-bit align idt_desc.address idt_descr: @@ -708,7 +810,7 @@ idt_descr: .word 0 # 32 bit align gdt_desc.address ENTRY(early_gdt_descr) .word GDT_ENTRIES*8-1 - .long per_cpu__gdt_page /* Overwritten for secondary CPUs */ + .long cpu_gdt_table /* Overwritten for secondary CPUs */ /* * The boot_gdt must mirror the equivalent in setup.S and is @@ -717,5 +819,65 @@ ENTRY(early_gdt_descr) .align L1_CACHE_BYTES ENTRY(boot_gdt) .fill GDT_ENTRY_BOOT_CS,8,0 - .quad 0x00cf9a000000ffff /* kernel 4GB code at 0x00000000 */ - .quad 0x00cf92000000ffff /* kernel 4GB data at 0x00000000 */ + .quad 0x00cf9b000000ffff /* kernel 4GB code at 0x00000000 */ + .quad 0x00cf93000000ffff /* kernel 4GB data at 0x00000000 */ + + .align PAGE_SIZE_asm +ENTRY(cpu_gdt_table) + .rept NR_CPUS + .quad 0x0000000000000000 /* NULL descriptor */ + .quad 0x0000000000000000 /* 0x0b reserved */ + .quad 0x0000000000000000 /* 0x13 reserved */ + .quad 0x0000000000000000 /* 0x1b reserved */ + +#ifdef CONFIG_PAX_KERNEXEC + .quad 0x00cf9b000000ffff /* 0x20 alternate kernel 4GB code at 0x00000000 */ +#else + .quad 0x0000000000000000 /* 0x20 unused */ +#endif + + .quad 0x0000000000000000 /* 0x28 unused */ + .quad 0x0000000000000000 /* 0x33 TLS entry 1 */ + .quad 0x0000000000000000 /* 0x3b TLS entry 2 */ + .quad 0x0000000000000000 /* 0x43 TLS entry 3 */ + .quad 0x0000000000000000 /* 0x4b reserved */ + .quad 0x0000000000000000 /* 0x53 reserved */ + .quad 0x0000000000000000 /* 0x5b reserved */ + + .quad 0x00cf9b000000ffff /* 0x60 kernel 4GB code at 0x00000000 */ + .quad 0x00cf93000000ffff /* 0x68 kernel 4GB data at 0x00000000 */ + .quad 0x00cffb000000ffff /* 0x73 user 4GB code at 0x00000000 */ + .quad 0x00cff3000000ffff /* 0x7b user 4GB data at 0x00000000 */ + + .quad 0x0000000000000000 /* 0x80 TSS descriptor */ + .quad 0x0000000000000000 /* 0x88 LDT descriptor */ + + /* + * Segments used for calling PnP BIOS have byte granularity. + * The code segments and data segments have fixed 64k limits, + * the transfer segment sizes are set at run time. + */ + .quad 0x00409b000000ffff /* 0x90 32-bit code */ + .quad 0x00009b000000ffff /* 0x98 16-bit code */ + .quad 0x000093000000ffff /* 0xa0 16-bit data */ + .quad 0x0000930000000000 /* 0xa8 16-bit data */ + .quad 0x0000930000000000 /* 0xb0 16-bit data */ + + /* + * The APM segments have byte granularity and their bases + * are set at run time. All have 64k limits. + */ + .quad 0x00409b000000ffff /* 0xb8 APM CS code */ + .quad 0x00009b000000ffff /* 0xc0 APM CS 16 code (16 bit) */ + .quad 0x004093000000ffff /* 0xc8 APM DS data */ + + .quad 0x00c0930000000000 /* 0xd0 - ESPFIX SS */ + .quad 0x0040930000000000 /* 0xd8 - PERCPU */ + .quad 0x0040910000000017 /* 0xe0 - STACK_CANARY */ + .quad 0x0000000000000000 /* 0xe8 - PCIBIOS_CS */ + .quad 0x0000000000000000 /* 0xf0 - PCIBIOS_DS */ + .quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */ + + /* Be sure this is zeroed to avoid false validations in Xen */ + .fill PAGE_SIZE_asm - GDT_SIZE,1,0 + .endr diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/head_64.S linux-2.6.32.59-pax/arch/x86/kernel/head_64.S --- linux-2.6.32.59/arch/x86/kernel/head_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/head_64.S 2012-03-13 13:15:34.540098022 +0100 @@ -19,6 +19,8 @@ #include #include #include +#include +#include #ifdef CONFIG_PARAVIRT #include @@ -38,6 +40,12 @@ L4_PAGE_OFFSET = pgd_index(__PAGE_OFFSET L3_PAGE_OFFSET = pud_index(__PAGE_OFFSET) L4_START_KERNEL = pgd_index(__START_KERNEL_map) L3_START_KERNEL = pud_index(__START_KERNEL_map) +L4_VMALLOC_START = pgd_index(VMALLOC_START) +L3_VMALLOC_START = pud_index(VMALLOC_START) +L4_VMALLOC_END = pgd_index(VMALLOC_END) +L3_VMALLOC_END = pud_index(VMALLOC_END) +L4_VMEMMAP_START = pgd_index(VMEMMAP_START) +L3_VMEMMAP_START = pud_index(VMEMMAP_START) .text __HEAD @@ -85,35 +93,23 @@ startup_64: */ addq %rbp, init_level4_pgt + 0(%rip) addq %rbp, init_level4_pgt + (L4_PAGE_OFFSET*8)(%rip) + addq %rbp, init_level4_pgt + (L4_VMALLOC_START*8)(%rip) + addq %rbp, init_level4_pgt + (L4_VMALLOC_END*8)(%rip) + addq %rbp, init_level4_pgt + (L4_VMEMMAP_START*8)(%rip) addq %rbp, init_level4_pgt + (L4_START_KERNEL*8)(%rip) addq %rbp, level3_ident_pgt + 0(%rip) +#ifndef CONFIG_XEN + addq %rbp, level3_ident_pgt + 8(%rip) +#endif - addq %rbp, level3_kernel_pgt + (510*8)(%rip) - addq %rbp, level3_kernel_pgt + (511*8)(%rip) + addq %rbp, level3_vmemmap_pgt + (L3_VMEMMAP_START*8)(%rip) - addq %rbp, level2_fixmap_pgt + (506*8)(%rip) + addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8)(%rip) + addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8+8)(%rip) - /* Add an Identity mapping if I am above 1G */ - leaq _text(%rip), %rdi - andq $PMD_PAGE_MASK, %rdi - - movq %rdi, %rax - shrq $PUD_SHIFT, %rax - andq $(PTRS_PER_PUD - 1), %rax - jz ident_complete - - leaq (level2_spare_pgt - __START_KERNEL_map + _KERNPG_TABLE)(%rbp), %rdx - leaq level3_ident_pgt(%rip), %rbx - movq %rdx, 0(%rbx, %rax, 8) - - movq %rdi, %rax - shrq $PMD_SHIFT, %rax - andq $(PTRS_PER_PMD - 1), %rax - leaq __PAGE_KERNEL_IDENT_LARGE_EXEC(%rdi), %rdx - leaq level2_spare_pgt(%rip), %rbx - movq %rdx, 0(%rbx, %rax, 8) -ident_complete: + addq %rbp, level2_fixmap_pgt + (506*8)(%rip) + addq %rbp, level2_fixmap_pgt + (507*8)(%rip) /* * Fixup the kernel text+data virtual addresses. Note that @@ -161,8 +157,8 @@ ENTRY(secondary_startup_64) * after the boot processor executes this code. */ - /* Enable PAE mode and PGE */ - movl $(X86_CR4_PAE | X86_CR4_PGE), %eax + /* Enable PAE mode and PSE/PGE */ + movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax movq %rax, %cr4 /* Setup early boot stage 4 level pagetables. */ @@ -184,9 +180,16 @@ ENTRY(secondary_startup_64) movl $MSR_EFER, %ecx rdmsr btsl $_EFER_SCE, %eax /* Enable System Call */ - btl $20,%edi /* No Execute supported? */ + btl $(X86_FEATURE_NX & 31),%edi /* No Execute supported? */ jnc 1f btsl $_EFER_NX, %eax + leaq init_level4_pgt(%rip), %rdi +#ifndef CONFIG_EFI + btsq $_PAGE_BIT_NX, 8*L4_PAGE_OFFSET(%rdi) +#endif + btsq $_PAGE_BIT_NX, 8*L4_VMALLOC_START(%rdi) + btsq $_PAGE_BIT_NX, 8*L4_VMALLOC_END(%rdi) + btsq $_PAGE_BIT_NX, 8*L4_VMEMMAP_START(%rdi) 1: wrmsr /* Make changes effective */ /* Setup cr0 */ @@ -249,6 +252,7 @@ ENTRY(secondary_startup_64) * jump. In addition we need to ensure %cs is set so we make this * a far return. */ + pax_set_fptr_mask movq initial_code(%rip),%rax pushq $0 # fake return address to stop unwinder pushq $__KERNEL_CS # set correct cs @@ -262,16 +266,16 @@ ENTRY(secondary_startup_64) .quad x86_64_start_kernel ENTRY(initial_gs) .quad INIT_PER_CPU_VAR(irq_stack_union) - __FINITDATA ENTRY(stack_start) .quad init_thread_union+THREAD_SIZE-8 .word 0 + __FINITDATA bad_address: jmp bad_address - .section ".init.text","ax" + __INIT #ifdef CONFIG_EARLY_PRINTK .globl early_idt_handlers early_idt_handlers: @@ -316,18 +320,23 @@ ENTRY(early_idt_handler) #endif /* EARLY_PRINTK */ 1: hlt jmp 1b + .previous #ifdef CONFIG_EARLY_PRINTK + __INITDATA early_recursion_flag: .long 0 + .previous + .section .rodata,"a",@progbits early_idt_msg: .asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n" early_idt_ripmsg: .asciz "RIP %s\n" -#endif /* CONFIG_EARLY_PRINTK */ .previous +#endif /* CONFIG_EARLY_PRINTK */ + .section .rodata,"a",@progbits #define NEXT_PAGE(name) \ .balign PAGE_SIZE; \ ENTRY(name) @@ -350,13 +359,41 @@ NEXT_PAGE(init_level4_pgt) .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE .org init_level4_pgt + L4_PAGE_OFFSET*8, 0 .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE + .org init_level4_pgt + L4_VMALLOC_START*8, 0 + .quad level3_vmalloc_start_pgt - __START_KERNEL_map + _KERNPG_TABLE + .org init_level4_pgt + L4_VMALLOC_END*8, 0 + .quad level3_vmalloc_end_pgt - __START_KERNEL_map + _KERNPG_TABLE + .org init_level4_pgt + L4_VMEMMAP_START*8, 0 + .quad level3_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE .org init_level4_pgt + L4_START_KERNEL*8, 0 /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */ .quad level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE +#ifdef CONFIG_PAX_PER_CPU_PGD +NEXT_PAGE(cpu_pgd) + .rept NR_CPUS + .fill 512,8,0 + .endr +#endif + NEXT_PAGE(level3_ident_pgt) .quad level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE +#ifdef CONFIG_XEN .fill 511,8,0 +#else + .quad level2_ident_pgt + PAGE_SIZE - __START_KERNEL_map + _KERNPG_TABLE + .fill 510,8,0 +#endif + +NEXT_PAGE(level3_vmalloc_start_pgt) + .fill 512,8,0 + +NEXT_PAGE(level3_vmalloc_end_pgt) + .fill 512,8,0 + +NEXT_PAGE(level3_vmemmap_pgt) + .fill L3_VMEMMAP_START,8,0 + .quad level2_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE NEXT_PAGE(level3_kernel_pgt) .fill L3_START_KERNEL,8,0 @@ -364,20 +401,23 @@ NEXT_PAGE(level3_kernel_pgt) .quad level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE .quad level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE +NEXT_PAGE(level2_vmemmap_pgt) + .fill 512,8,0 + NEXT_PAGE(level2_fixmap_pgt) - .fill 506,8,0 - .quad level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE - /* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */ - .fill 5,8,0 + .fill 507,8,0 + .quad level1_vsyscall_pgt - __START_KERNEL_map + _PAGE_TABLE + /* 6MB reserved for vsyscalls + a 2MB hole = 3 + 1 entries */ + .fill 4,8,0 -NEXT_PAGE(level1_fixmap_pgt) +NEXT_PAGE(level1_vsyscall_pgt) .fill 512,8,0 -NEXT_PAGE(level2_ident_pgt) - /* Since I easily can, map the first 1G. + /* Since I easily can, map the first 2G. * Don't set NX because code runs from these pages. */ - PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD) +NEXT_PAGE(level2_ident_pgt) + PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, 2*PTRS_PER_PMD) NEXT_PAGE(level2_kernel_pgt) /* @@ -390,33 +430,55 @@ NEXT_PAGE(level2_kernel_pgt) * If you want to increase this then increase MODULES_VADDR * too.) */ - PMDS(0, __PAGE_KERNEL_LARGE_EXEC, - KERNEL_IMAGE_SIZE/PMD_SIZE) - -NEXT_PAGE(level2_spare_pgt) - .fill 512, 8, 0 + PMDS(0, __PAGE_KERNEL_LARGE_EXEC, KERNEL_IMAGE_SIZE/PMD_SIZE) #undef PMDS #undef NEXT_PAGE - .data + .align PAGE_SIZE +ENTRY(cpu_gdt_table) + .rept NR_CPUS + .quad 0x0000000000000000 /* NULL descriptor */ + .quad 0x00cf9b000000ffff /* __KERNEL32_CS */ + .quad 0x00af9b000000ffff /* __KERNEL_CS */ + .quad 0x00cf93000000ffff /* __KERNEL_DS */ + .quad 0x00cffb000000ffff /* __USER32_CS */ + .quad 0x00cff3000000ffff /* __USER_DS, __USER32_DS */ + .quad 0x00affb000000ffff /* __USER_CS */ + +#ifdef CONFIG_PAX_KERNEXEC + .quad 0x00af9b000000ffff /* __KERNEXEC_KERNEL_CS */ +#else + .quad 0x0 /* unused */ +#endif + + .quad 0,0 /* TSS */ + .quad 0,0 /* LDT */ + .quad 0,0,0 /* three TLS descriptors */ + .quad 0x0000f40000000000 /* node/CPU stored in limit */ + /* asm/segment.h:GDT_ENTRIES must match this */ + + /* zero the remaining page */ + .fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0 + .endr + .align 16 .globl early_gdt_descr early_gdt_descr: .word GDT_ENTRIES*8-1 early_gdt_descr_base: - .quad INIT_PER_CPU_VAR(gdt_page) + .quad cpu_gdt_table ENTRY(phys_base) /* This must match the first entry in level2_kernel_pgt */ .quad 0x0000000000000000 #include "../../x86/xen/xen-head.S" - - .section .bss, "aw", @nobits + + .section .rodata,"a",@progbits .align L1_CACHE_BYTES ENTRY(idt_table) - .skip IDT_ENTRIES * 16 + .fill 512,8,0 __PAGE_ALIGNED_BSS .align PAGE_SIZE diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/i386_ksyms_32.c linux-2.6.32.59-pax/arch/x86/kernel/i386_ksyms_32.c --- linux-2.6.32.59/arch/x86/kernel/i386_ksyms_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/i386_ksyms_32.c 2012-03-13 13:15:34.540098022 +0100 @@ -20,8 +20,12 @@ extern void cmpxchg8b_emu(void); EXPORT_SYMBOL(cmpxchg8b_emu); #endif +EXPORT_SYMBOL_GPL(cpu_gdt_table); + /* Networking helper routines. */ EXPORT_SYMBOL(csum_partial_copy_generic); +EXPORT_SYMBOL(csum_partial_copy_generic_to_user); +EXPORT_SYMBOL(csum_partial_copy_generic_from_user); EXPORT_SYMBOL(__get_user_1); EXPORT_SYMBOL(__get_user_2); @@ -36,3 +40,7 @@ EXPORT_SYMBOL(strstr); EXPORT_SYMBOL(csum_partial); EXPORT_SYMBOL(empty_zero_page); + +#ifdef CONFIG_PAX_KERNEXEC +EXPORT_SYMBOL(__LOAD_PHYSICAL_ADDR); +#endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/i8259.c linux-2.6.32.59-pax/arch/x86/kernel/i8259.c --- linux-2.6.32.59/arch/x86/kernel/i8259.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/i8259.c 2012-03-13 13:15:34.540098022 +0100 @@ -208,7 +208,7 @@ spurious_8259A_irq: "spurious 8259A interrupt: IRQ%d.\n", irq); spurious_irq_mask |= irqmask; } - atomic_inc(&irq_err_count); + atomic_inc_unchecked(&irq_err_count); /* * Theoretically we do not have to handle this IRQ, * but in Linux this does not cause problems and is diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/init_task.c linux-2.6.32.59-pax/arch/x86/kernel/init_task.c --- linux-2.6.32.59/arch/x86/kernel/init_task.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/init_task.c 2012-03-13 13:15:34.540098022 +0100 @@ -20,8 +20,7 @@ static struct sighand_struct init_sighan * way process stacks are handled. This is done by having a special * "init_task" linker map entry.. */ -union thread_union init_thread_union __init_task_data = - { INIT_THREAD_INFO(init_task) }; +union thread_union init_thread_union __init_task_data; /* * Initial task structure. @@ -38,5 +37,5 @@ EXPORT_SYMBOL(init_task); * section. Since TSS's are completely CPU-local, we want them * on exact cacheline boundaries, to eliminate cacheline ping-pong. */ -DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; - +struct tss_struct init_tss[NR_CPUS] ____cacheline_internodealigned_in_smp = { [0 ... NR_CPUS-1] = INIT_TSS }; +EXPORT_SYMBOL(init_tss); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/ioport.c linux-2.6.32.59-pax/arch/x86/kernel/ioport.c --- linux-2.6.32.59/arch/x86/kernel/ioport.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/ioport.c 2012-03-13 13:15:34.544098021 +0100 @@ -67,7 +67,7 @@ asmlinkage long sys_ioperm(unsigned long * because the ->io_bitmap_max value must match the bitmap * contents: */ - tss = &per_cpu(init_tss, get_cpu()); + tss = init_tss + get_cpu(); set_bitmap(t->io_bitmap_ptr, from, num, !turn_on); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/irq_32.c linux-2.6.32.59-pax/arch/x86/kernel/irq_32.c --- linux-2.6.32.59/arch/x86/kernel/irq_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/irq_32.c 2012-03-13 13:15:34.544098021 +0100 @@ -35,7 +35,7 @@ static int check_stack_overflow(void) __asm__ __volatile__("andl %%esp,%0" : "=r" (sp) : "0" (THREAD_SIZE - 1)); - return sp < (sizeof(struct thread_info) + STACK_WARN); + return sp < STACK_WARN; } static void print_stack_overflow(void) @@ -54,9 +54,9 @@ static inline void print_stack_overflow( * per-CPU IRQ handling contexts (thread information and stack) */ union irq_ctx { - struct thread_info tinfo; - u32 stack[THREAD_SIZE/sizeof(u32)]; -} __attribute__((aligned(PAGE_SIZE))); + unsigned long previous_esp; + u32 stack[THREAD_SIZE/sizeof(u32)]; +} __attribute__((aligned(THREAD_SIZE))); static DEFINE_PER_CPU(union irq_ctx *, hardirq_ctx); static DEFINE_PER_CPU(union irq_ctx *, softirq_ctx); @@ -78,10 +78,9 @@ static void call_on_stack(void *func, vo static inline int execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq) { - union irq_ctx *curctx, *irqctx; + union irq_ctx *irqctx; u32 *isp, arg1, arg2; - curctx = (union irq_ctx *) current_thread_info(); irqctx = __get_cpu_var(hardirq_ctx); /* @@ -90,21 +89,16 @@ execute_on_irq_stack(int overflow, struc * handler) we can't do that and just have to keep using the * current stack (which is the irq stack already after all) */ - if (unlikely(curctx == irqctx)) + if (unlikely((void *)current_stack_pointer - (void *)irqctx < THREAD_SIZE)) return 0; /* build the stack frame on the IRQ stack */ - isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); - irqctx->tinfo.task = curctx->tinfo.task; - irqctx->tinfo.previous_esp = current_stack_pointer; + isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); + irqctx->previous_esp = current_stack_pointer; - /* - * Copy the softirq bits in preempt_count so that the - * softirq checks work in the hardirq context. - */ - irqctx->tinfo.preempt_count = - (irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) | - (curctx->tinfo.preempt_count & SOFTIRQ_MASK); +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(MAKE_MM_SEG(0)); +#endif if (unlikely(overflow)) call_on_stack(print_stack_overflow, isp); @@ -116,6 +110,11 @@ execute_on_irq_stack(int overflow, struc : "0" (irq), "1" (desc), "2" (isp), "D" (desc->handle_irq) : "memory", "cc", "ecx"); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(current_thread_info()->addr_limit); +#endif + return 1; } @@ -124,28 +123,11 @@ execute_on_irq_stack(int overflow, struc */ void __cpuinit irq_ctx_init(int cpu) { - union irq_ctx *irqctx; - if (per_cpu(hardirq_ctx, cpu)) return; - irqctx = &per_cpu(hardirq_stack, cpu); - irqctx->tinfo.task = NULL; - irqctx->tinfo.exec_domain = NULL; - irqctx->tinfo.cpu = cpu; - irqctx->tinfo.preempt_count = HARDIRQ_OFFSET; - irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); - - per_cpu(hardirq_ctx, cpu) = irqctx; - - irqctx = &per_cpu(softirq_stack, cpu); - irqctx->tinfo.task = NULL; - irqctx->tinfo.exec_domain = NULL; - irqctx->tinfo.cpu = cpu; - irqctx->tinfo.preempt_count = 0; - irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); - - per_cpu(softirq_ctx, cpu) = irqctx; + per_cpu(hardirq_ctx, cpu) = &per_cpu(hardirq_stack, cpu); + per_cpu(softirq_ctx, cpu) = &per_cpu(softirq_stack, cpu); printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n", cpu, per_cpu(hardirq_ctx, cpu), per_cpu(softirq_ctx, cpu)); @@ -159,7 +141,6 @@ void irq_ctx_exit(int cpu) asmlinkage void do_softirq(void) { unsigned long flags; - struct thread_info *curctx; union irq_ctx *irqctx; u32 *isp; @@ -169,15 +150,22 @@ asmlinkage void do_softirq(void) local_irq_save(flags); if (local_softirq_pending()) { - curctx = current_thread_info(); irqctx = __get_cpu_var(softirq_ctx); - irqctx->tinfo.task = curctx->task; - irqctx->tinfo.previous_esp = current_stack_pointer; + irqctx->previous_esp = current_stack_pointer; /* build the stack frame on the softirq stack */ - isp = (u32 *) ((char *)irqctx + sizeof(*irqctx)); + isp = (u32 *) ((char *)irqctx + sizeof(*irqctx) - 8); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(MAKE_MM_SEG(0)); +#endif call_on_stack(__do_softirq, isp); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(current_thread_info()->addr_limit); +#endif + /* * Shouldnt happen, we returned above if in_interrupt(): */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/irq.c linux-2.6.32.59-pax/arch/x86/kernel/irq.c --- linux-2.6.32.59/arch/x86/kernel/irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/irq.c 2012-03-13 13:15:34.544098021 +0100 @@ -15,7 +15,7 @@ #include #include -atomic_t irq_err_count; +atomic_unchecked_t irq_err_count; /* Function pointer for generic interrupt vector handling */ void (*generic_interrupt_extension)(void) = NULL; @@ -114,9 +114,9 @@ static int show_other_interrupts(struct seq_printf(p, "%10u ", per_cpu(mce_poll_count, j)); seq_printf(p, " Machine check polls\n"); #endif - seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count)); + seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count)); #if defined(CONFIG_X86_IO_APIC) - seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count)); + seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read_unchecked(&irq_mis_count)); #endif return 0; } @@ -209,10 +209,10 @@ u64 arch_irq_stat_cpu(unsigned int cpu) u64 arch_irq_stat(void) { - u64 sum = atomic_read(&irq_err_count); + u64 sum = atomic_read_unchecked(&irq_err_count); #ifdef CONFIG_X86_IO_APIC - sum += atomic_read(&irq_mis_count); + sum += atomic_read_unchecked(&irq_mis_count); #endif return sum; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/kdebugfs.c linux-2.6.32.59-pax/arch/x86/kernel/kdebugfs.c --- linux-2.6.32.59/arch/x86/kernel/kdebugfs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/kdebugfs.c 2012-08-12 13:33:23.117243412 +0200 @@ -26,7 +26,7 @@ struct setup_data_node { u32 len; }; -static ssize_t setup_data_read(struct file *file, char __user *user_buf, +static ssize_t __size_overflow(3) setup_data_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct setup_data_node *node = file->private_data; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/kgdb.c linux-2.6.32.59-pax/arch/x86/kernel/kgdb.c --- linux-2.6.32.59/arch/x86/kernel/kgdb.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/kgdb.c 2012-03-13 13:15:34.544098021 +0100 @@ -390,13 +390,13 @@ int kgdb_arch_handle_exception(int e_vec /* clear the trace bit */ linux_regs->flags &= ~X86_EFLAGS_TF; - atomic_set(&kgdb_cpu_doing_single_step, -1); + atomic_set_unchecked(&kgdb_cpu_doing_single_step, -1); /* set the trace bit if we're stepping */ if (remcomInBuffer[0] == 's') { linux_regs->flags |= X86_EFLAGS_TF; kgdb_single_step = 1; - atomic_set(&kgdb_cpu_doing_single_step, + atomic_set_unchecked(&kgdb_cpu_doing_single_step, raw_smp_processor_id()); } @@ -476,7 +476,7 @@ static int __kgdb_notify(struct die_args break; case DIE_DEBUG: - if (atomic_read(&kgdb_cpu_doing_single_step) == + if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) == raw_smp_processor_id()) { if (user_mode(regs)) return single_step_cont(regs, args); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/kprobes.c linux-2.6.32.59-pax/arch/x86/kernel/kprobes.c --- linux-2.6.32.59/arch/x86/kernel/kprobes.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/kprobes.c 2012-03-13 13:15:34.544098021 +0100 @@ -168,9 +168,13 @@ static void __kprobes set_jmp_op(void *f char op; s32 raddr; } __attribute__((packed)) * jop; - jop = (struct __arch_jmp_op *)from; + + jop = (struct __arch_jmp_op *)(ktla_ktva(from)); + + pax_open_kernel(); jop->raddr = (s32)((long)(to) - ((long)(from) + 5)); jop->op = RELATIVEJUMP_INSTRUCTION; + pax_close_kernel(); } /* @@ -195,7 +199,7 @@ static int __kprobes can_boost(kprobe_op kprobe_opcode_t opcode; kprobe_opcode_t *orig_opcodes = opcodes; - if (search_exception_tables((unsigned long)opcodes)) + if (search_exception_tables(ktva_ktla((unsigned long)opcodes))) return 0; /* Page fault may occur on this address. */ retry: @@ -339,7 +343,9 @@ static void __kprobes fix_riprel(struct disp = (u8 *) p->addr + *((s32 *) insn) - (u8 *) p->ainsn.insn; BUG_ON((s64) (s32) disp != disp); /* Sanity check. */ + pax_open_kernel(); *(s32 *)insn = (s32) disp; + pax_close_kernel(); } } #endif @@ -347,16 +353,18 @@ static void __kprobes fix_riprel(struct static void __kprobes arch_copy_kprobe(struct kprobe *p) { - memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); + pax_open_kernel(); + memcpy(p->ainsn.insn, ktla_ktva(p->addr), MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); + pax_close_kernel(); fix_riprel(p); - if (can_boost(p->addr)) + if (can_boost(ktla_ktva(p->addr))) p->ainsn.boostable = 0; else p->ainsn.boostable = -1; - p->opcode = *p->addr; + p->opcode = *(ktla_ktva(p->addr)); } int __kprobes arch_prepare_kprobe(struct kprobe *p) @@ -434,7 +442,7 @@ static void __kprobes prepare_singlestep if (p->opcode == BREAKPOINT_INSTRUCTION) regs->ip = (unsigned long)p->addr; else - regs->ip = (unsigned long)p->ainsn.insn; + regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); } void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri, @@ -455,7 +463,7 @@ static void __kprobes setup_singlestep(s if (p->ainsn.boostable == 1 && !p->post_handler) { /* Boost up -- we can execute copied instructions directly */ reset_current_kprobe(); - regs->ip = (unsigned long)p->ainsn.insn; + regs->ip = ktva_ktla((unsigned long)p->ainsn.insn); preempt_enable_no_resched(); return; } @@ -525,7 +533,7 @@ static int __kprobes kprobe_handler(stru struct kprobe_ctlblk *kcb; addr = (kprobe_opcode_t *)(regs->ip - sizeof(kprobe_opcode_t)); - if (*addr != BREAKPOINT_INSTRUCTION) { + if (*(kprobe_opcode_t *)ktla_ktva((unsigned long)addr) != BREAKPOINT_INSTRUCTION) { /* * The breakpoint instruction was removed right * after we hit it. Another cpu has removed @@ -637,6 +645,9 @@ static void __used __kprobes kretprobe_t /* Skip orig_ax, ip, cs */ " addq $24, %rsp\n" " popfq\n" +#ifdef KERNEXEC_PLUGIN + " btsq $63,(%rsp)\n" +#endif #else " pushf\n" /* @@ -777,7 +788,7 @@ static void __kprobes resume_execution(s struct pt_regs *regs, struct kprobe_ctlblk *kcb) { unsigned long *tos = stack_addr(regs); - unsigned long copy_ip = (unsigned long)p->ainsn.insn; + unsigned long copy_ip = ktva_ktla((unsigned long)p->ainsn.insn); unsigned long orig_ip = (unsigned long)p->addr; kprobe_opcode_t *insn = p->ainsn.insn; @@ -960,7 +971,7 @@ int __kprobes kprobe_exceptions_notify(s struct die_args *args = data; int ret = NOTIFY_DONE; - if (args->regs && user_mode_vm(args->regs)) + if (args->regs && user_mode(args->regs)) return ret; switch (val) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/kvm.c linux-2.6.32.59-pax/arch/x86/kernel/kvm.c --- linux-2.6.32.59/arch/x86/kernel/kvm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/kvm.c 2012-03-13 13:15:34.548098021 +0100 @@ -216,6 +216,7 @@ static void __init paravirt_ops_setup(vo pv_mmu_ops.set_pud = kvm_set_pud; #if PAGETABLE_LEVELS == 4 pv_mmu_ops.set_pgd = kvm_set_pgd; + pv_mmu_ops.set_pgd_batched = kvm_set_pgd; #endif #endif pv_mmu_ops.flush_tlb_user = kvm_flush_tlb; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/ldt.c linux-2.6.32.59-pax/arch/x86/kernel/ldt.c --- linux-2.6.32.59/arch/x86/kernel/ldt.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/ldt.c 2012-05-20 19:21:25.289167262 +0200 @@ -66,13 +66,13 @@ static int alloc_ldt(mm_context_t *pc, i if (reload) { #ifdef CONFIG_SMP preempt_disable(); - load_LDT(pc); + load_LDT_nolock(pc); if (!cpumask_equal(mm_cpumask(current->mm), cpumask_of(smp_processor_id()))) smp_call_function(flush_ldt, current->mm, 1); preempt_enable(); #else - load_LDT(pc); + load_LDT_nolock(pc); #endif } if (oldsize) { @@ -94,7 +94,7 @@ static inline int copy_ldt(mm_context_t return err; for (i = 0; i < old->size; i++) - write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE); + write_ldt_entry(new->ldt, i, old->ldt + i); return 0; } @@ -115,6 +115,24 @@ int init_new_context(struct task_struct retval = copy_ldt(&mm->context, &old_mm->context); mutex_unlock(&old_mm->context.lock); } + + if (tsk == current) { + mm->context.vdso = 0; + +#ifdef CONFIG_X86_32 +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + mm->context.user_cs_base = 0UL; + mm->context.user_cs_limit = ~0UL; + +#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP) + cpus_clear(mm->context.cpu_user_cs_mask); +#endif + +#endif +#endif + + } + return retval; } @@ -229,6 +247,13 @@ static int write_ldt(void __user *ptr, u } } +#ifdef CONFIG_PAX_SEGMEXEC + if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (ldt_info.contents & MODIFY_LDT_CONTENTS_CODE)) { + error = -EINVAL; + goto out_unlock; + } +#endif + fill_ldt(&ldt, &ldt_info); if (oldmode) ldt.avl = 0; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/machine_kexec_32.c linux-2.6.32.59-pax/arch/x86/kernel/machine_kexec_32.c --- linux-2.6.32.59/arch/x86/kernel/machine_kexec_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/machine_kexec_32.c 2012-03-13 13:15:34.548098021 +0100 @@ -26,7 +26,7 @@ #include #include -static void set_idt(void *newidt, __u16 limit) +static void set_idt(struct desc_struct *newidt, __u16 limit) { struct desc_ptr curidt; @@ -38,7 +38,7 @@ static void set_idt(void *newidt, __u16 } -static void set_gdt(void *newgdt, __u16 limit) +static void set_gdt(struct desc_struct *newgdt, __u16 limit) { struct desc_ptr curgdt; @@ -217,7 +217,7 @@ void machine_kexec(struct kimage *image) } control_page = page_address(image->control_code_page); - memcpy(control_page, relocate_kernel, KEXEC_CONTROL_CODE_MAX_SIZE); + memcpy(control_page, (void *)ktla_ktva((unsigned long)relocate_kernel), KEXEC_CONTROL_CODE_MAX_SIZE); relocate_kernel_ptr = control_page; page_list[PA_CONTROL_PAGE] = __pa(control_page); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/microcode_intel.c linux-2.6.32.59-pax/arch/x86/kernel/microcode_intel.c --- linux-2.6.32.59/arch/x86/kernel/microcode_intel.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/microcode_intel.c 2012-05-20 19:28:06.233188976 +0200 @@ -443,13 +443,13 @@ static enum ucode_state request_microcod static int get_ucode_user(void *to, const void *from, size_t n) { - return copy_from_user(to, from, n); + return copy_from_user(to, (const void __force_user *)from, n); } static enum ucode_state request_microcode_user(int cpu, const void __user *buf, size_t size) { - return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user); + return generic_load_microcode(cpu, (__force_kernel void *)buf, size, &get_ucode_user); } static void microcode_fini_cpu(int cpu) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/module.c linux-2.6.32.59-pax/arch/x86/kernel/module.c --- linux-2.6.32.59/arch/x86/kernel/module.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/module.c 2012-03-13 13:15:34.552098021 +0100 @@ -34,7 +34,7 @@ #define DEBUGP(fmt...) #endif -void *module_alloc(unsigned long size) +static void *__module_alloc(unsigned long size, pgprot_t prot) { struct vm_struct *area; @@ -48,8 +48,18 @@ void *module_alloc(unsigned long size) if (!area) return NULL; - return __vmalloc_area(area, GFP_KERNEL | __GFP_HIGHMEM, - PAGE_KERNEL_EXEC); + return __vmalloc_area(area, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, prot); +} + +void *module_alloc(unsigned long size) +{ + +#ifdef CONFIG_PAX_KERNEXEC + return __module_alloc(size, PAGE_KERNEL); +#else + return __module_alloc(size, PAGE_KERNEL_EXEC); +#endif + } /* Free memory returned from module_alloc */ @@ -58,6 +68,40 @@ void module_free(struct module *mod, voi vfree(module_region); } +#ifdef CONFIG_PAX_KERNEXEC +#ifdef CONFIG_X86_32 +void *module_alloc_exec(unsigned long size) +{ + struct vm_struct *area; + + if (size == 0) + return NULL; + + area = __get_vm_area(size, VM_ALLOC, (unsigned long)&MODULES_EXEC_VADDR, (unsigned long)&MODULES_EXEC_END); + return area ? area->addr : NULL; +} +EXPORT_SYMBOL(module_alloc_exec); + +void module_free_exec(struct module *mod, void *module_region) +{ + vunmap(module_region); +} +EXPORT_SYMBOL(module_free_exec); +#else +void module_free_exec(struct module *mod, void *module_region) +{ + module_free(mod, module_region); +} +EXPORT_SYMBOL(module_free_exec); + +void *module_alloc_exec(unsigned long size) +{ + return __module_alloc(size, PAGE_KERNEL_RX); +} +EXPORT_SYMBOL(module_alloc_exec); +#endif +#endif + /* We don't need anything special. */ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, @@ -77,14 +121,16 @@ int apply_relocate(Elf32_Shdr *sechdrs, unsigned int i; Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; Elf32_Sym *sym; - uint32_t *location; + uint32_t *plocation, location; DEBUGP("Applying relocate section %u to %u\n", relsec, sechdrs[relsec].sh_info); for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { /* This is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset; + plocation = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + rel[i].r_offset; + location = (uint32_t)plocation; + if (sechdrs[sechdrs[relsec].sh_info].sh_flags & SHF_EXECINSTR) + plocation = ktla_ktva((void *)plocation); /* This is the symbol it is referring to. Note that all undefined symbols have been resolved. */ sym = (Elf32_Sym *)sechdrs[symindex].sh_addr @@ -93,11 +139,15 @@ int apply_relocate(Elf32_Shdr *sechdrs, switch (ELF32_R_TYPE(rel[i].r_info)) { case R_386_32: /* We add the value into the location given */ - *location += sym->st_value; + pax_open_kernel(); + *plocation += sym->st_value; + pax_close_kernel(); break; case R_386_PC32: /* Add the value, subtract its postition */ - *location += sym->st_value - (uint32_t)location; + pax_open_kernel(); + *plocation += sym->st_value - location; + pax_close_kernel(); break; default: printk(KERN_ERR "module %s: Unknown relocation: %u\n", @@ -153,21 +203,30 @@ int apply_relocate_add(Elf64_Shdr *sechd case R_X86_64_NONE: break; case R_X86_64_64: + pax_open_kernel(); *(u64 *)loc = val; + pax_close_kernel(); break; case R_X86_64_32: + pax_open_kernel(); *(u32 *)loc = val; + pax_close_kernel(); if (val != *(u32 *)loc) goto overflow; break; case R_X86_64_32S: + pax_open_kernel(); *(s32 *)loc = val; + pax_close_kernel(); if ((s64)val != *(s32 *)loc) goto overflow; break; case R_X86_64_PC32: val -= (u64)loc; + pax_open_kernel(); *(u32 *)loc = val; + pax_close_kernel(); + #if 0 if ((s64)val != *(s32 *)loc) goto overflow; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/paravirt.c linux-2.6.32.59-pax/arch/x86/kernel/paravirt.c --- linux-2.6.32.59/arch/x86/kernel/paravirt.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/paravirt.c 2012-03-13 13:15:34.552098021 +0100 @@ -53,6 +53,9 @@ u64 _paravirt_ident_64(u64 x) { return x; } +#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) +PV_CALLEE_SAVE_REGS_THUNK(_paravirt_ident_64); +#endif void __init default_banner(void) { @@ -145,15 +148,19 @@ unsigned paravirt_patch_default(u8 type, if (opfunc == NULL) /* If there's no function, patch it with a ud2a (BUG) */ ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a)); - else if (opfunc == _paravirt_nop) + else if (opfunc == (void *)_paravirt_nop) /* If the operation is a nop, then nop the callsite */ ret = paravirt_patch_nop(); /* identity functions just return their single argument */ - else if (opfunc == _paravirt_ident_32) + else if (opfunc == (void *)_paravirt_ident_32) ret = paravirt_patch_ident_32(insnbuf, len); - else if (opfunc == _paravirt_ident_64) + else if (opfunc == (void *)_paravirt_ident_64) + ret = paravirt_patch_ident_64(insnbuf, len); +#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) + else if (opfunc == (void *)__raw_callee_save__paravirt_ident_64) ret = paravirt_patch_ident_64(insnbuf, len); +#endif else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) || type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) || @@ -178,7 +185,7 @@ unsigned paravirt_patch_insns(void *insn if (insn_len > len || start == NULL) insn_len = len; else - memcpy(insnbuf, start, insn_len); + memcpy(insnbuf, ktla_ktva(start), insn_len); return insn_len; } @@ -294,22 +301,22 @@ void arch_flush_lazy_mmu_mode(void) preempt_enable(); } -struct pv_info pv_info = { +struct pv_info pv_info __read_only = { .name = "bare hardware", .paravirt_enabled = 0, .kernel_rpl = 0, .shared_kernel_pmd = 1, /* Only used when CONFIG_X86_PAE is set */ }; -struct pv_init_ops pv_init_ops = { +struct pv_init_ops pv_init_ops __read_only = { .patch = native_patch, }; -struct pv_time_ops pv_time_ops = { +struct pv_time_ops pv_time_ops __read_only = { .sched_clock = native_sched_clock, }; -struct pv_irq_ops pv_irq_ops = { +struct pv_irq_ops pv_irq_ops __read_only = { .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl), .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable), @@ -321,7 +328,7 @@ struct pv_irq_ops pv_irq_ops = { #endif }; -struct pv_cpu_ops pv_cpu_ops = { +struct pv_cpu_ops pv_cpu_ops __read_only = { .cpuid = native_cpuid, .get_debugreg = native_get_debugreg, .set_debugreg = native_set_debugreg, @@ -382,21 +389,26 @@ struct pv_cpu_ops pv_cpu_ops = { .end_context_switch = paravirt_nop, }; -struct pv_apic_ops pv_apic_ops = { +struct pv_apic_ops pv_apic_ops __read_only = { #ifdef CONFIG_X86_LOCAL_APIC .startup_ipi_hook = paravirt_nop, #endif }; -#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE) +#ifdef CONFIG_X86_32 +#ifdef CONFIG_X86_PAE +/* 64-bit pagetable entries */ +#define PTE_IDENT PV_CALLEE_SAVE(_paravirt_ident_64) +#else /* 32-bit pagetable entries */ #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32) +#endif #else /* 64-bit pagetable entries */ #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64) #endif -struct pv_mmu_ops pv_mmu_ops = { +struct pv_mmu_ops pv_mmu_ops __read_only = { .read_cr2 = native_read_cr2, .write_cr2 = native_write_cr2, @@ -448,6 +460,7 @@ struct pv_mmu_ops pv_mmu_ops = { .make_pud = PTE_IDENT, .set_pgd = native_set_pgd, + .set_pgd_batched = native_set_pgd_batched, #endif #endif /* PAGETABLE_LEVELS >= 3 */ @@ -467,6 +480,12 @@ struct pv_mmu_ops pv_mmu_ops = { }, .set_fixmap = native_set_fixmap, + +#ifdef CONFIG_PAX_KERNEXEC + .pax_open_kernel = native_pax_open_kernel, + .pax_close_kernel = native_pax_close_kernel, +#endif + }; EXPORT_SYMBOL_GPL(pv_time_ops); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/paravirt-spinlocks.c linux-2.6.32.59-pax/arch/x86/kernel/paravirt-spinlocks.c --- linux-2.6.32.59/arch/x86/kernel/paravirt-spinlocks.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/paravirt-spinlocks.c 2012-03-13 13:15:34.552098021 +0100 @@ -13,7 +13,7 @@ default_spin_lock_flags(raw_spinlock_t * __raw_spin_lock(lock); } -struct pv_lock_ops pv_lock_ops = { +struct pv_lock_ops pv_lock_ops __read_only = { #ifdef CONFIG_SMP .spin_is_locked = __ticket_spin_is_locked, .spin_is_contended = __ticket_spin_is_contended, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/process_32.c linux-2.6.32.59-pax/arch/x86/kernel/process_32.c --- linux-2.6.32.59/arch/x86/kernel/process_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/process_32.c 2012-03-13 13:15:34.552098021 +0100 @@ -67,6 +67,7 @@ asmlinkage void ret_from_fork(void) __as unsigned long thread_saved_pc(struct task_struct *tsk) { return ((unsigned long *)tsk->thread.sp)[3]; +//XXX return tsk->thread.eip; } #ifndef CONFIG_SMP @@ -129,15 +130,14 @@ void __show_regs(struct pt_regs *regs, i unsigned short ss, gs; const char *board; - if (user_mode_vm(regs)) { + if (user_mode(regs)) { sp = regs->sp; ss = regs->ss & 0xffff; - gs = get_user_gs(regs); } else { sp = (unsigned long) (®s->sp); savesegment(ss, ss); - savesegment(gs, gs); } + gs = get_user_gs(regs); printk("\n"); @@ -210,10 +210,10 @@ int kernel_thread(int (*fn)(void *), voi regs.bx = (unsigned long) fn; regs.dx = (unsigned long) arg; - regs.ds = __USER_DS; - regs.es = __USER_DS; + regs.ds = __KERNEL_DS; + regs.es = __KERNEL_DS; regs.fs = __KERNEL_PERCPU; - regs.gs = __KERNEL_STACK_CANARY; + savesegment(gs, regs.gs); regs.orig_ax = -1; regs.ip = (unsigned long) kernel_thread_helper; regs.cs = __KERNEL_CS | get_kernel_rpl(); @@ -247,13 +247,14 @@ int copy_thread(unsigned long clone_flag struct task_struct *tsk; int err; - childregs = task_pt_regs(p); + childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 8; *childregs = *regs; childregs->ax = 0; childregs->sp = sp; p->thread.sp = (unsigned long) childregs; p->thread.sp0 = (unsigned long) (childregs+1); + p->tinfo.lowest_stack = (unsigned long)task_stack_page(p); p->thread.ip = (unsigned long) ret_from_fork; @@ -345,7 +346,7 @@ __switch_to(struct task_struct *prev_p, struct thread_struct *prev = &prev_p->thread, *next = &next_p->thread; int cpu = smp_processor_id(); - struct tss_struct *tss = &per_cpu(init_tss, cpu); + struct tss_struct *tss = init_tss + cpu; bool preload_fpu; /* never put a printk in __switch_to... printk() calls wake_up*() indirectly */ @@ -380,6 +381,10 @@ __switch_to(struct task_struct *prev_p, */ lazy_save_gs(prev->gs); +#ifdef CONFIG_PAX_MEMORY_UDEREF + __set_fs(task_thread_info(next_p)->addr_limit); +#endif + /* * Load the per-thread Thread-Local Storage descriptor. */ @@ -415,6 +420,9 @@ __switch_to(struct task_struct *prev_p, */ arch_end_context_switch(next_p); + percpu_write(current_task, next_p); + percpu_write(current_tinfo, &next_p->tinfo); + if (preload_fpu) __math_state_restore(); @@ -424,8 +432,6 @@ __switch_to(struct task_struct *prev_p, if (prev->gs | next->gs) lazy_load_gs(next->gs); - percpu_write(current_task, next_p); - return prev_p; } @@ -495,4 +501,3 @@ unsigned long get_wchan(struct task_stru } while (count++ < 16); return 0; } - diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/process_64.c linux-2.6.32.59-pax/arch/x86/kernel/process_64.c --- linux-2.6.32.59/arch/x86/kernel/process_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/process_64.c 2012-03-13 13:15:34.556098021 +0100 @@ -91,7 +91,7 @@ static void __exit_idle(void) void exit_idle(void) { /* idle loop has pid 0 */ - if (current->pid) + if (task_pid_nr(current)) return; __exit_idle(); } @@ -170,7 +170,7 @@ void __show_regs(struct pt_regs *regs, i if (!board) board = ""; printk(KERN_INFO "Pid: %d, comm: %.20s %s %s %.*s %s\n", - current->pid, current->comm, print_tainted(), + task_pid_nr(current), current->comm, print_tainted(), init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version, board); @@ -280,8 +280,7 @@ int copy_thread(unsigned long clone_flag struct pt_regs *childregs; struct task_struct *me = current; - childregs = ((struct pt_regs *) - (THREAD_SIZE + task_stack_page(p))) - 1; + childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 16; *childregs = *regs; childregs->ax = 0; @@ -292,6 +291,7 @@ int copy_thread(unsigned long clone_flag p->thread.sp = (unsigned long) childregs; p->thread.sp0 = (unsigned long) (childregs+1); p->thread.usersp = me->thread.usersp; + p->tinfo.lowest_stack = (unsigned long)task_stack_page(p); set_tsk_thread_flag(p, TIF_FORK); @@ -379,7 +379,7 @@ __switch_to(struct task_struct *prev_p, struct thread_struct *prev = &prev_p->thread; struct thread_struct *next = &next_p->thread; int cpu = smp_processor_id(); - struct tss_struct *tss = &per_cpu(init_tss, cpu); + struct tss_struct *tss = init_tss + cpu; unsigned fsindex, gsindex; bool preload_fpu; @@ -475,10 +475,9 @@ __switch_to(struct task_struct *prev_p, prev->usersp = percpu_read(old_rsp); percpu_write(old_rsp, next->usersp); percpu_write(current_task, next_p); + percpu_write(current_tinfo, &next_p->tinfo); - percpu_write(kernel_stack, - (unsigned long)task_stack_page(next_p) + - THREAD_SIZE - KERNEL_STACK_OFFSET); + percpu_write(kernel_stack, next->sp0); /* * Now maybe reload the debug registers and handle I/O bitmaps @@ -559,12 +558,11 @@ unsigned long get_wchan(struct task_stru if (!p || p == current || p->state == TASK_RUNNING) return 0; stack = (unsigned long)task_stack_page(p); - if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE) + if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE-16-sizeof(u64)) return 0; fp = *(u64 *)(p->thread.sp); do { - if (fp < (unsigned long)stack || - fp >= (unsigned long)stack+THREAD_SIZE) + if (fp < stack || fp > stack+THREAD_SIZE-16-sizeof(u64)) return 0; ip = *(u64 *)(fp+8); if (!in_sched_functions(ip)) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/process.c linux-2.6.32.59-pax/arch/x86/kernel/process.c --- linux-2.6.32.59/arch/x86/kernel/process.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/process.c 2012-03-13 13:15:34.556098021 +0100 @@ -51,16 +51,33 @@ void free_thread_xstate(struct task_stru void free_thread_info(struct thread_info *ti) { - free_thread_xstate(ti->task); free_pages((unsigned long)ti, get_order(THREAD_SIZE)); } +static struct kmem_cache *task_struct_cachep; + void arch_task_cache_init(void) { - task_xstate_cachep = - kmem_cache_create("task_xstate", xstate_size, + /* create a slab on which task_structs can be allocated */ + task_struct_cachep = + kmem_cache_create("task_struct", sizeof(struct task_struct), + ARCH_MIN_TASKALIGN, SLAB_PANIC | SLAB_NOTRACK, NULL); + + task_xstate_cachep = + kmem_cache_create("task_xstate", xstate_size, __alignof__(union thread_xstate), - SLAB_PANIC | SLAB_NOTRACK, NULL); + SLAB_PANIC | SLAB_NOTRACK | SLAB_USERCOPY, NULL); +} + +struct task_struct *alloc_task_struct(void) +{ + return kmem_cache_alloc(task_struct_cachep, GFP_KERNEL); +} + +void free_task_struct(struct task_struct *task) +{ + free_thread_xstate(task); + kmem_cache_free(task_struct_cachep, task); } /* @@ -73,7 +90,7 @@ void exit_thread(void) unsigned long *bp = t->io_bitmap_ptr; if (bp) { - struct tss_struct *tss = &per_cpu(init_tss, get_cpu()); + struct tss_struct *tss = init_tss + get_cpu(); t->io_bitmap_ptr = NULL; clear_thread_flag(TIF_IO_BITMAP); @@ -93,6 +110,9 @@ void flush_thread(void) clear_tsk_thread_flag(tsk, TIF_DEBUG); +#if defined(CONFIG_X86_32) && !defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_PAX_MEMORY_UDEREF) + loadsegment(gs, 0); +#endif tsk->thread.debugreg0 = 0; tsk->thread.debugreg1 = 0; tsk->thread.debugreg2 = 0; @@ -307,7 +327,7 @@ void default_idle(void) EXPORT_SYMBOL(default_idle); #endif -void stop_this_cpu(void *dummy) +__noreturn void stop_this_cpu(void *dummy) { local_irq_disable(); /* @@ -568,16 +588,37 @@ static int __init idle_setup(char *str) } early_param("idle", idle_setup); -unsigned long arch_align_stack(unsigned long sp) +#ifdef CONFIG_PAX_RANDKSTACK +void pax_randomize_kstack(struct pt_regs *regs) { - if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) - sp -= get_random_int() % 8192; - return sp & ~0xf; -} + struct thread_struct *thread = ¤t->thread; + unsigned long time; -unsigned long arch_randomize_brk(struct mm_struct *mm) -{ - unsigned long range_end = mm->brk + 0x02000000; - return randomize_range(mm->brk, range_end, 0) ? : mm->brk; -} + if (!randomize_va_space) + return; + + if (v8086_mode(regs)) + return; + rdtscl(time); + + /* P4 seems to return a 0 LSB, ignore it */ +#ifdef CONFIG_MPENTIUM4 + time &= 0x3EUL; + time <<= 2; +#elif defined(CONFIG_X86_64) + time &= 0xFUL; + time <<= 4; +#else + time &= 0x1FUL; + time <<= 3; +#endif + + thread->sp0 ^= time; + load_sp0(init_tss + smp_processor_id(), thread); + +#ifdef CONFIG_X86_64 + percpu_write(kernel_stack, thread->sp0); +#endif +} +#endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/ptrace.c linux-2.6.32.59-pax/arch/x86/kernel/ptrace.c --- linux-2.6.32.59/arch/x86/kernel/ptrace.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/ptrace.c 2012-05-20 19:21:25.301167284 +0200 @@ -925,7 +925,7 @@ static const struct user_regset_view use long arch_ptrace(struct task_struct *child, long request, long addr, long data) { int ret; - unsigned long __user *datap = (unsigned long __user *)data; + unsigned long __user *datap = (__force unsigned long __user *)data; switch (request) { /* read the word at location addr in the USER area. */ @@ -1012,14 +1012,14 @@ long arch_ptrace(struct task_struct *chi if (addr < 0) return -EIO; ret = do_get_thread_area(child, addr, - (struct user_desc __user *) data); + (__force struct user_desc __user *) data); break; case PTRACE_SET_THREAD_AREA: if (addr < 0) return -EIO; ret = do_set_thread_area(child, addr, - (struct user_desc __user *) data, 0); + (__force struct user_desc __user *) data, 0); break; #endif @@ -1038,12 +1038,12 @@ long arch_ptrace(struct task_struct *chi #ifdef CONFIG_X86_PTRACE_BTS case PTRACE_BTS_CONFIG: ret = ptrace_bts_config - (child, data, (struct ptrace_bts_config __user *)addr); + (child, data, (__force struct ptrace_bts_config __user *)addr); break; case PTRACE_BTS_STATUS: ret = ptrace_bts_status - (child, data, (struct ptrace_bts_config __user *)addr); + (child, data, (__force struct ptrace_bts_config __user *)addr); break; case PTRACE_BTS_SIZE: @@ -1052,7 +1052,7 @@ long arch_ptrace(struct task_struct *chi case PTRACE_BTS_GET: ret = ptrace_bts_read_record - (child, data, (struct bts_struct __user *) addr); + (child, data, (__force struct bts_struct __user *) addr); break; case PTRACE_BTS_CLEAR: @@ -1061,7 +1061,7 @@ long arch_ptrace(struct task_struct *chi case PTRACE_BTS_DRAIN: ret = ptrace_bts_drain - (child, data, (struct bts_struct __user *) addr); + (child, data, (__force struct bts_struct __user *) addr); break; #endif /* CONFIG_X86_PTRACE_BTS */ @@ -1450,7 +1450,7 @@ void send_sigtrap(struct task_struct *ts info.si_code = si_code; /* User-mode ip? */ - info.si_addr = user_mode_vm(regs) ? (void __user *) regs->ip : NULL; + info.si_addr = user_mode(regs) ? (__force void __user *) regs->ip : NULL; /* Send us the fake SIGTRAP */ force_sig_info(SIGTRAP, &info, tsk); @@ -1469,7 +1469,7 @@ void send_sigtrap(struct task_struct *ts * We must return the syscall number to actually look up in the table. * This can be -1L to skip running any syscall at all. */ -asmregparm long syscall_trace_enter(struct pt_regs *regs) +long syscall_trace_enter(struct pt_regs *regs) { long ret = 0; @@ -1514,7 +1514,7 @@ asmregparm long syscall_trace_enter(stru return ret ?: regs->orig_ax; } -asmregparm void syscall_trace_leave(struct pt_regs *regs) +void syscall_trace_leave(struct pt_regs *regs) { if (unlikely(current->audit_context)) audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/reboot.c linux-2.6.32.59-pax/arch/x86/kernel/reboot.c --- linux-2.6.32.59/arch/x86/kernel/reboot.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/reboot.c 2012-09-11 21:10:51.024025608 +0200 @@ -33,7 +33,7 @@ void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); static const struct desc_ptr no_idt = {}; -static int reboot_mode; +static unsigned short reboot_mode; enum reboot_type reboot_type = BOOT_KBD; int reboot_force; @@ -292,12 +292,12 @@ core_initcall(reboot_init); controller to pulse the CPU reset line, which is more thorough, but doesn't work with at least one type of 486 motherboard. It is easy to stop this code working; hence the copious comments. */ -static const unsigned long long -real_mode_gdt_entries [3] = +static struct desc_struct +real_mode_gdt_entries [3] __read_only = { - 0x0000000000000000ULL, /* Null descriptor */ - 0x00009b000000ffffULL, /* 16-bit real-mode 64k code at 0x00000000 */ - 0x000093000100ffffULL /* 16-bit real-mode 64k data at 0x00000100 */ + GDT_ENTRY_INIT(0, 0, 0), /* Null descriptor */ + GDT_ENTRY_INIT(0x9b, 0, 0xffff), /* 16-bit real-mode 64k code at 0x00000000 */ + GDT_ENTRY_INIT(0x93, 0x100, 0xffff) /* 16-bit real-mode 64k data at 0x00000100 */ }; static const struct desc_ptr @@ -346,7 +346,7 @@ static const unsigned char jump_to_bios * specified by the code and length parameters. * We assume that length will aways be less that 100! */ -void machine_real_restart(const unsigned char *code, int length) +__noreturn void machine_real_restart(const unsigned char *code, unsigned int length) { local_irq_disable(); @@ -366,8 +366,8 @@ void machine_real_restart(const unsigned /* Remap the kernel at virtual address zero, as well as offset zero from the kernel segment. This assumes the kernel segment starts at virtual address PAGE_OFFSET. */ - memcpy(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY, - sizeof(swapper_pg_dir [0]) * KERNEL_PGD_PTRS); + clone_pgd_range(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY, + min_t(unsigned long, KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY)); /* * Use `swapper_pg_dir' as our page directory. @@ -379,16 +379,15 @@ void machine_real_restart(const unsigned boot)". This seems like a fairly standard thing that gets set by REBOOT.COM programs, and the previous reset routine did this too. */ - *((unsigned short *)0x472) = reboot_mode; + *(unsigned short *)(__va(0x472)) = reboot_mode; /* For the switch to real mode, copy some code to low memory. It has to be in the first 64k because it is running in 16-bit mode, and it has to have the same physical and virtual address, because it turns off paging. Copy it near the end of the first page, out of the way of BIOS variables. */ - memcpy((void *)(0x1000 - sizeof(real_mode_switch) - 100), - real_mode_switch, sizeof (real_mode_switch)); - memcpy((void *)(0x1000 - 100), code, length); + memcpy(__va(0x1000 - sizeof (real_mode_switch) - 100), real_mode_switch, sizeof (real_mode_switch)); + memcpy(__va(0x1000 - 100), code, length); /* Set up the IDT for real mode. */ load_idt(&real_mode_idt); @@ -416,6 +415,7 @@ void machine_real_restart(const unsigned __asm__ __volatile__ ("ljmp $0x0008,%0" : : "i" ((void *)(0x1000 - sizeof (real_mode_switch) - 100))); + do { } while (1); } #ifdef CONFIG_APM_MODULE EXPORT_SYMBOL(machine_real_restart); @@ -544,7 +544,7 @@ void __attribute__((weak)) mach_reboot_f { } -static void native_machine_emergency_restart(void) +static void __noreturn native_machine_emergency_restart(void) { int i; @@ -659,13 +659,13 @@ void native_machine_shutdown(void) #endif } -static void __machine_emergency_restart(int emergency) +static __noreturn void __machine_emergency_restart(int emergency) { reboot_emergency = emergency; machine_ops.emergency_restart(); } -static void native_machine_restart(char *__unused) +static void __noreturn native_machine_restart(char *__unused) { printk("machine restart\n"); @@ -674,7 +674,7 @@ static void native_machine_restart(char __machine_emergency_restart(0); } -static void native_machine_halt(void) +static void __noreturn native_machine_halt(void) { /* stop other cpus and apics */ machine_shutdown(); @@ -685,7 +685,7 @@ static void native_machine_halt(void) stop_this_cpu(NULL); } -static void native_machine_power_off(void) +static void __noreturn native_machine_power_off(void) { if (pm_power_off) { if (!reboot_force) @@ -694,6 +694,7 @@ static void native_machine_power_off(voi } /* a fallback in case there is no PM info available */ tboot_shutdown(TB_SHUTDOWN_HALT); + do { } while (1); } struct machine_ops machine_ops = { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/relocate_kernel_64.S linux-2.6.32.59-pax/arch/x86/kernel/relocate_kernel_64.S --- linux-2.6.32.59/arch/x86/kernel/relocate_kernel_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/relocate_kernel_64.S 2012-03-13 13:15:34.560098021 +0100 @@ -11,6 +11,7 @@ #include #include #include +#include /* * Must be relocatable PIC code callable as a C function @@ -167,6 +168,7 @@ identity_mapped: xorq %r14, %r14 xorq %r15, %r15 + pax_force_retaddr 0, 1 ret 1: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/setup.c linux-2.6.32.59-pax/arch/x86/kernel/setup.c --- linux-2.6.32.59/arch/x86/kernel/setup.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/setup.c 2012-03-13 13:15:34.564098020 +0100 @@ -783,14 +783,14 @@ void __init setup_arch(char **cmdline_p) if (!boot_params.hdr.root_flags) root_mountflags &= ~MS_RDONLY; - init_mm.start_code = (unsigned long) _text; - init_mm.end_code = (unsigned long) _etext; + init_mm.start_code = ktla_ktva((unsigned long) _text); + init_mm.end_code = ktla_ktva((unsigned long) _etext); init_mm.end_data = (unsigned long) _edata; init_mm.brk = _brk_end; - code_resource.start = virt_to_phys(_text); - code_resource.end = virt_to_phys(_etext)-1; - data_resource.start = virt_to_phys(_etext); + code_resource.start = virt_to_phys(ktla_ktva(_text)); + code_resource.end = virt_to_phys(ktla_ktva(_etext))-1; + data_resource.start = virt_to_phys(_sdata); data_resource.end = virt_to_phys(_edata)-1; bss_resource.start = virt_to_phys(&__bss_start); bss_resource.end = virt_to_phys(&__bss_stop)-1; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/setup_percpu.c linux-2.6.32.59-pax/arch/x86/kernel/setup_percpu.c --- linux-2.6.32.59/arch/x86/kernel/setup_percpu.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/setup_percpu.c 2012-05-20 19:21:25.301167284 +0200 @@ -25,19 +25,17 @@ # define DBG(x...) #endif -DEFINE_PER_CPU(int, cpu_number); +#ifdef CONFIG_SMP +DEFINE_PER_CPU(unsigned int, cpu_number); EXPORT_PER_CPU_SYMBOL(cpu_number); +#endif -#ifdef CONFIG_X86_64 #define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load) -#else -#define BOOT_PERCPU_OFFSET 0 -#endif DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET; EXPORT_PER_CPU_SYMBOL(this_cpu_off); -unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = { +unsigned long __per_cpu_offset[NR_CPUS] __read_only = { [0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET, }; EXPORT_SYMBOL(__per_cpu_offset); @@ -159,10 +157,10 @@ static inline void setup_percpu_segment( { #ifdef CONFIG_X86_32 struct desc_struct gdt; + unsigned long base = per_cpu_offset(cpu); - pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF, - 0x2 | DESCTYPE_S, 0x8); - gdt.s = 1; + pack_descriptor(&gdt, base, (VMALLOC_END - base - 1) >> PAGE_SHIFT, + 0x83 | DESCTYPE_S, 0xC); write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S); #endif @@ -212,6 +210,11 @@ void __init setup_per_cpu_areas(void) /* alrighty, percpu areas up and running */ delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start; for_each_possible_cpu(cpu) { +#ifdef CONFIG_CC_STACKPROTECTOR +#ifdef CONFIG_X86_32 + unsigned long canary = per_cpu(stack_canary.canary, cpu); +#endif +#endif per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu]; per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu); per_cpu(cpu_number, cpu) = cpu; @@ -239,6 +242,12 @@ void __init setup_per_cpu_areas(void) early_per_cpu_map(x86_cpu_to_node_map, cpu); #endif #endif +#ifdef CONFIG_CC_STACKPROTECTOR +#ifdef CONFIG_X86_32 + if (!cpu) + per_cpu(stack_canary.canary, cpu) = canary; +#endif +#endif /* * Up to this point, the boot CPU has been using .data.init * area. Reload any changed state for the boot CPU. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/signal.c linux-2.6.32.59-pax/arch/x86/kernel/signal.c --- linux-2.6.32.59/arch/x86/kernel/signal.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/signal.c 2012-03-13 13:15:34.564098020 +0100 @@ -197,7 +197,7 @@ static unsigned long align_sigframe(unsi * Align the stack pointer according to the i386 ABI, * i.e. so that on function entry ((sp + 4) & 15) == 0. */ - sp = ((sp + 4) & -16ul) - 4; + sp = ((sp - 12) & -16ul) - 4; #else /* !CONFIG_X86_32 */ sp = round_down(sp, 16) - 8; #endif @@ -248,11 +248,11 @@ get_sigframe(struct k_sigaction *ka, str * Return an always-bogus address instead so we will die with SIGSEGV. */ if (onsigstack && !likely(on_sig_stack(sp))) - return (void __user *)-1L; + return (__force void __user *)-1L; /* save i387 state */ if (used_math() && save_i387_xstate(*fpstate) < 0) - return (void __user *)-1L; + return (__force void __user *)-1L; return (void __user *)sp; } @@ -307,9 +307,9 @@ __setup_frame(int sig, struct k_sigactio } if (current->mm->context.vdso) - restorer = VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); + restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, sigreturn); else - restorer = &frame->retcode; + restorer = (void __user *)&frame->retcode; if (ka->sa.sa_flags & SA_RESTORER) restorer = ka->sa.sa_restorer; @@ -323,7 +323,7 @@ __setup_frame(int sig, struct k_sigactio * reasons and because gdb uses it as a signature to notice * signal handler stack frames. */ - err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode); + err |= __put_user(*((u64 *)&retcode), (u64 __user *)frame->retcode); if (err) return -EFAULT; @@ -377,7 +377,10 @@ static int __setup_rt_frame(int sig, str err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); /* Set up to return from userspace. */ - restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); + if (current->mm->context.vdso) + restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); + else + restorer = (void __user *)&frame->retcode; if (ka->sa.sa_flags & SA_RESTORER) restorer = ka->sa.sa_restorer; put_user_ex(restorer, &frame->pretcode); @@ -389,7 +392,7 @@ static int __setup_rt_frame(int sig, str * reasons and because gdb uses it as a signature to notice * signal handler stack frames. */ - put_user_ex(*((u64 *)&rt_retcode), (u64 *)frame->retcode); + put_user_ex(*((u64 *)&rt_retcode), (u64 __user *)frame->retcode); } put_user_catch(err); if (err) @@ -789,7 +792,7 @@ static void do_signal(struct pt_regs *re * X86_32: vm86 regs switched out by assembly code before reaching * here, so testing against kernel CS suffices. */ - if (!user_mode(regs)) + if (!user_mode_novm(regs)) return; if (current_thread_info()->status & TS_RESTORE_SIGMASK) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/smpboot.c linux-2.6.32.59-pax/arch/x86/kernel/smpboot.c --- linux-2.6.32.59/arch/x86/kernel/smpboot.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/smpboot.c 2012-03-13 13:15:34.564098020 +0100 @@ -94,14 +94,14 @@ static DEFINE_PER_CPU(struct task_struct */ static DEFINE_MUTEX(x86_cpu_hotplug_driver_mutex); -void cpu_hotplug_driver_lock() +void cpu_hotplug_driver_lock(void) { - mutex_lock(&x86_cpu_hotplug_driver_mutex); + mutex_lock(&x86_cpu_hotplug_driver_mutex); } -void cpu_hotplug_driver_unlock() +void cpu_hotplug_driver_unlock(void) { - mutex_unlock(&x86_cpu_hotplug_driver_mutex); + mutex_unlock(&x86_cpu_hotplug_driver_mutex); } ssize_t arch_cpu_probe(const char *buf, size_t count) { return -1; } @@ -743,6 +743,7 @@ static int __cpuinit do_boot_cpu(int api set_idle_for_cpu(cpu, c_idle.idle); do_rest: per_cpu(current_task, cpu) = c_idle.idle; + per_cpu(current_tinfo, cpu) = &c_idle.idle->tinfo; #ifdef CONFIG_X86_32 /* Stack for startup_32 can be just as for start_secondary onwards */ irq_ctx_init(cpu); @@ -750,11 +751,13 @@ do_rest: #else clear_tsk_thread_flag(c_idle.idle, TIF_FORK); initial_gs = per_cpu_offset(cpu); - per_cpu(kernel_stack, cpu) = - (unsigned long)task_stack_page(c_idle.idle) - - KERNEL_STACK_OFFSET + THREAD_SIZE; + per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(c_idle.idle) - 16 + THREAD_SIZE; #endif + + pax_open_kernel(); early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu); + pax_close_kernel(); + initial_code = (unsigned long)start_secondary; stack_start.sp = (void *) c_idle.idle->thread.sp; @@ -891,6 +894,12 @@ int __cpuinit native_cpu_up(unsigned int per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; +#ifdef CONFIG_PAX_PER_CPU_PGD + clone_pgd_range(get_cpu_pgd(cpu) + KERNEL_PGD_BOUNDARY, + swapper_pg_dir + KERNEL_PGD_BOUNDARY, + KERNEL_PGD_PTRS); +#endif + err = do_boot_cpu(apicid, cpu); if (err) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/step.c linux-2.6.32.59-pax/arch/x86/kernel/step.c --- linux-2.6.32.59/arch/x86/kernel/step.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/step.c 2012-03-13 13:15:34.568098020 +0100 @@ -27,10 +27,10 @@ unsigned long convert_ip_to_linear(struc struct desc_struct *desc; unsigned long base; - seg &= ~7UL; + seg >>= 3; mutex_lock(&child->mm->context.lock); - if (unlikely((seg >> 3) >= child->mm->context.size)) + if (unlikely(seg >= child->mm->context.size)) addr = -1L; /* bogus selector, access would fault */ else { desc = child->mm->context.ldt + seg; @@ -42,7 +42,8 @@ unsigned long convert_ip_to_linear(struc addr += base; } mutex_unlock(&child->mm->context.lock); - } + } else if (seg == __KERNEL_CS || seg == __KERNEXEC_KERNEL_CS) + addr = ktla_ktva(addr); return addr; } @@ -53,6 +54,9 @@ static int is_setting_trap_flag(struct t unsigned char opcode[15]; unsigned long addr = convert_ip_to_linear(child, regs); + if (addr == -EINVAL) + return 0; + copied = access_process_vm(child, addr, opcode, sizeof(opcode), 0); for (i = 0; i < copied; i++) { switch (opcode[i]) { @@ -74,7 +78,7 @@ static int is_setting_trap_flag(struct t #ifdef CONFIG_X86_64 case 0x40 ... 0x4f: - if (regs->cs != __USER_CS) + if ((regs->cs & 0xffff) != __USER_CS) /* 32-bit mode: register increment */ return 0; /* 64-bit mode: REX prefix */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/syscall_table_32.S linux-2.6.32.59-pax/arch/x86/kernel/syscall_table_32.S --- linux-2.6.32.59/arch/x86/kernel/syscall_table_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/syscall_table_32.S 2012-03-13 13:15:34.568098020 +0100 @@ -1,3 +1,4 @@ +.section .rodata,"a",@progbits ENTRY(sys_call_table) .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ .long sys_exit diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/sys_i386_32.c linux-2.6.32.59-pax/arch/x86/kernel/sys_i386_32.c --- linux-2.6.32.59/arch/x86/kernel/sys_i386_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/sys_i386_32.c 2012-03-13 13:15:34.568098020 +0100 @@ -24,6 +24,21 @@ #include +int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) +{ + unsigned long pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (current->mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + if (len > pax_task_size || addr > pax_task_size - len) + return -EINVAL; + + return 0; +} + /* * Perform the select(nd, in, out, ex, tv) and mmap() system * calls. Linux/i386 didn't use to be able to handle more than @@ -58,6 +73,212 @@ out: return err; } +unsigned long +arch_get_unmapped_area(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, unsigned long flags) +{ + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; + unsigned long start_addr, pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; + + if (len > pax_task_size) + return -ENOMEM; + + if (flags & MAP_FIXED) + return addr; + +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + + if (addr) { + addr = PAGE_ALIGN(addr); + if (pax_task_size - len >= addr) { + vma = find_vma(mm, addr); + if (check_heap_stack_gap(vma, addr, len)) + return addr; + } + } + if (len > mm->cached_hole_size) { + start_addr = addr = mm->free_area_cache; + } else { + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + } + +#ifdef CONFIG_PAX_PAGEEXEC + if (!nx_enabled && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE) && start_addr >= mm->mmap_base) { + start_addr = 0x00110000UL; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + start_addr += mm->delta_mmap & 0x03FFF000UL; +#endif + + if (mm->start_brk <= start_addr && start_addr < mm->mmap_base) + start_addr = addr = mm->mmap_base; + else + addr = start_addr; + } +#endif + +full_search: + for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { + /* At this point: (!vma || addr < vma->vm_end). */ + if (pax_task_size - len < addr) { + /* + * Start a new search - just in case we missed + * some holes. + */ + if (start_addr != mm->mmap_base) { + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + return -ENOMEM; + } + if (check_heap_stack_gap(vma, addr, len)) + break; + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; + addr = vma->vm_end; + if (mm->start_brk <= addr && addr < mm->mmap_base) { + start_addr = addr = mm->mmap_base; + mm->cached_hole_size = 0; + goto full_search; + } + } + + /* + * Remember the place where we stopped the search: + */ + mm->free_area_cache = addr + len; + return addr; +} + +unsigned long +arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, + const unsigned long len, const unsigned long pgoff, + const unsigned long flags) +{ + struct vm_area_struct *vma; + struct mm_struct *mm = current->mm; + unsigned long base = mm->mmap_base, addr = addr0, pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; + + /* requested length too big for entire address space */ + if (len > pax_task_size) + return -ENOMEM; + + if (flags & MAP_FIXED) + return addr; + +#ifdef CONFIG_PAX_PAGEEXEC + if (!nx_enabled && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE)) + goto bottomup; +#endif + +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + + /* requesting a specific address */ + if (addr) { + addr = PAGE_ALIGN(addr); + if (pax_task_size - len >= addr) { + vma = find_vma(mm, addr); + if (check_heap_stack_gap(vma, addr, len)) + return addr; + } + } + + /* check if free_area_cache is useful for us */ + if (len <= mm->cached_hole_size) { + mm->cached_hole_size = 0; + mm->free_area_cache = mm->mmap_base; + } + + /* either no address requested or can't fit in requested address hole */ + addr = mm->free_area_cache; + + /* make sure it can fit in the remaining address space */ + if (addr > len) { + vma = find_vma(mm, addr-len); + if (check_heap_stack_gap(vma, addr - len, len)) + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr-len); + } + + if (mm->mmap_base < len) + goto bottomup; + + addr = mm->mmap_base-len; + + do { + /* + * Lookup failure means no vma is above this address, + * else if new region fits below vma->vm_start, + * return with success: + */ + vma = find_vma(mm, addr); + if (check_heap_stack_gap(vma, addr, len)) + /* remember the address as a hint for next time */ + return (mm->free_area_cache = addr); + + /* remember the largest hole we saw so far */ + if (addr + mm->cached_hole_size < vma->vm_start) + mm->cached_hole_size = vma->vm_start - addr; + + /* try just below the current vma->vm_start */ + addr = skip_heap_stack_gap(vma, len); + } while (!IS_ERR_VALUE(addr)); + +bottomup: + /* + * A failed mmap() very likely causes application failure, + * so fall back to the bottom-up function here. This scenario + * can happen with large stack limits and large mmap() + * allocations. + */ + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; + else +#endif + + mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + + mm->free_area_cache = mm->mmap_base; + mm->cached_hole_size = ~0UL; + addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); + /* + * Restore the topdown base: + */ + mm->mmap_base = base; + mm->free_area_cache = base; + mm->cached_hole_size = ~0UL; + + return addr; +} struct sel_arg_struct { unsigned long n; @@ -93,7 +314,7 @@ asmlinkage int sys_ipc(uint call, int fi return sys_semtimedop(first, (struct sembuf __user *)ptr, second, NULL); case SEMTIMEDOP: return sys_semtimedop(first, (struct sembuf __user *)ptr, second, - (const struct timespec __user *)fifth); + (__force const struct timespec __user *)fifth); case SEMGET: return sys_semget(first, second, third); @@ -140,7 +361,7 @@ asmlinkage int sys_ipc(uint call, int fi ret = do_shmat(first, (char __user *) ptr, second, &raddr); if (ret) return ret; - return put_user(raddr, (ulong __user *) third); + return put_user(raddr, (__force ulong __user *) third); } case 1: /* iBCS2 emulator entry point */ if (!segment_eq(get_fs(), get_ds())) @@ -207,17 +428,3 @@ asmlinkage int sys_olduname(struct oldol return error; } - - -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) -{ - long __res; - asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx" - : "=a" (__res) - : "0" (__NR_execve), "ri" (filename), "c" (argv), "d" (envp) : "memory"); - return __res; -} diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/sys_x86_64.c linux-2.6.32.59-pax/arch/x86/kernel/sys_x86_64.c --- linux-2.6.32.59/arch/x86/kernel/sys_x86_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/sys_x86_64.c 2012-03-13 13:15:34.568098020 +0100 @@ -32,8 +32,8 @@ out: return error; } -static void find_start_end(unsigned long flags, unsigned long *begin, - unsigned long *end) +static void find_start_end(struct mm_struct *mm, unsigned long flags, + unsigned long *begin, unsigned long *end) { if (!test_thread_flag(TIF_IA32) && (flags & MAP_32BIT)) { unsigned long new_begin; @@ -52,7 +52,7 @@ static void find_start_end(unsigned long *begin = new_begin; } } else { - *begin = TASK_UNMAPPED_BASE; + *begin = mm->mmap_base; *end = TASK_SIZE; } } @@ -69,16 +69,19 @@ arch_get_unmapped_area(struct file *filp if (flags & MAP_FIXED) return addr; - find_start_end(flags, &begin, &end); + find_start_end(mm, flags, &begin, &end); if (len > end) return -ENOMEM; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + if (addr) { addr = PAGE_ALIGN(addr); vma = find_vma(mm, addr); - if (end - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (end - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (((flags & MAP_32BIT) || test_thread_flag(TIF_IA32)) @@ -106,7 +109,7 @@ full_search: } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { + if (check_heap_stack_gap(vma, addr, len)) { /* * Remember the place where we stopped the search: */ @@ -128,7 +131,7 @@ arch_get_unmapped_area_topdown(struct fi { struct vm_area_struct *vma; struct mm_struct *mm = current->mm; - unsigned long addr = addr0; + unsigned long base = mm->mmap_base, addr = addr0; /* requested length too big for entire address space */ if (len > TASK_SIZE) @@ -141,13 +144,18 @@ arch_get_unmapped_area_topdown(struct fi if (!test_thread_flag(TIF_IA32) && (flags & MAP_32BIT)) goto bottomup; +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + /* requesting a specific address */ if (addr) { addr = PAGE_ALIGN(addr); - vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) - return addr; + if (TASK_SIZE - len >= addr) { + vma = find_vma(mm, addr); + if (check_heap_stack_gap(vma, addr, len)) + return addr; + } } /* check if free_area_cache is useful for us */ @@ -162,7 +170,7 @@ arch_get_unmapped_area_topdown(struct fi /* make sure it can fit in the remaining address space */ if (addr > len) { vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) + if (check_heap_stack_gap(vma, addr - len, len)) /* remember the address as a hint for next time */ return mm->free_area_cache = addr-len; } @@ -179,7 +187,7 @@ arch_get_unmapped_area_topdown(struct fi * return with success: */ vma = find_vma(mm, addr); - if (!vma || addr+len <= vma->vm_start) + if (check_heap_stack_gap(vma, addr, len)) /* remember the address as a hint for next time */ return mm->free_area_cache = addr; @@ -188,8 +196,8 @@ arch_get_unmapped_area_topdown(struct fi mm->cached_hole_size = vma->vm_start - addr; /* try just below the current vma->vm_start */ - addr = vma->vm_start-len; - } while (len < vma->vm_start); + addr = skip_heap_stack_gap(vma, len); + } while (!IS_ERR_VALUE(addr)); bottomup: /* @@ -198,13 +206,21 @@ bottomup: * can happen with large stack limits and large mmap() * allocations. */ + mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + + mm->free_area_cache = mm->mmap_base; mm->cached_hole_size = ~0UL; - mm->free_area_cache = TASK_UNMAPPED_BASE; addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); /* * Restore the topdown base: */ - mm->free_area_cache = mm->mmap_base; + mm->mmap_base = base; + mm->free_area_cache = base; mm->cached_hole_size = ~0UL; return addr; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/tboot.c linux-2.6.32.59-pax/arch/x86/kernel/tboot.c --- linux-2.6.32.59/arch/x86/kernel/tboot.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/tboot.c 2012-03-13 13:15:34.572098020 +0100 @@ -216,7 +216,7 @@ static int tboot_setup_sleep(void) void tboot_shutdown(u32 shutdown_type) { - void (*shutdown)(void); + void (* __noreturn shutdown)(void); if (!tboot_enabled()) return; @@ -238,7 +238,7 @@ void tboot_shutdown(u32 shutdown_type) switch_to_tboot_pt(); - shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry; + shutdown = (void *)tboot->shutdown_entry; shutdown(); /* should not reach here */ @@ -295,7 +295,7 @@ void tboot_sleep(u8 sleep_state, u32 pm1 tboot_shutdown(acpi_shutdown_map[sleep_state]); } -static atomic_t ap_wfs_count; +static atomic_unchecked_t ap_wfs_count; static int tboot_wait_for_aps(int num_aps) { @@ -319,9 +319,9 @@ static int __cpuinit tboot_cpu_callback( { switch (action) { case CPU_DYING: - atomic_inc(&ap_wfs_count); + atomic_inc_unchecked(&ap_wfs_count); if (num_online_cpus() == 1) - if (tboot_wait_for_aps(atomic_read(&ap_wfs_count))) + if (tboot_wait_for_aps(atomic_read_unchecked(&ap_wfs_count))) return NOTIFY_BAD; break; } @@ -340,7 +340,7 @@ static __init int tboot_late_init(void) tboot_create_trampoline(); - atomic_set(&ap_wfs_count, 0); + atomic_set_unchecked(&ap_wfs_count, 0); register_hotcpu_notifier(&tboot_cpu_notifier); return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/time.c linux-2.6.32.59-pax/arch/x86/kernel/time.c --- linux-2.6.32.59/arch/x86/kernel/time.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/time.c 2012-03-13 13:15:34.572098020 +0100 @@ -26,17 +26,13 @@ int timer_ack; #endif -#ifdef CONFIG_X86_64 -volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES; -#endif - unsigned long profile_pc(struct pt_regs *regs) { unsigned long pc = instruction_pointer(regs); - if (!user_mode_vm(regs) && in_lock_functions(pc)) { + if (!user_mode(regs) && in_lock_functions(pc)) { #ifdef CONFIG_FRAME_POINTER - return *(unsigned long *)(regs->bp + sizeof(long)); + return ktla_ktva(*(unsigned long *)(regs->bp + sizeof(long))); #else unsigned long *sp = (unsigned long *)kernel_stack_pointer(regs); @@ -45,11 +41,17 @@ unsigned long profile_pc(struct pt_regs * or above a saved flags. Eflags has bits 22-31 zero, * kernel addresses don't. */ + +#ifdef CONFIG_PAX_KERNEXEC + return ktla_ktva(sp[0]); +#else if (sp[0] >> 22) return sp[0]; if (sp[1] >> 22) return sp[1]; #endif + +#endif } return pc; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/tls.c linux-2.6.32.59-pax/arch/x86/kernel/tls.c --- linux-2.6.32.59/arch/x86/kernel/tls.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/tls.c 2012-09-20 00:38:15.738660686 +0200 @@ -85,6 +85,11 @@ int do_set_thread_area(struct task_struc if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) return -EINVAL; +#ifdef CONFIG_PAX_SEGMEXEC + if ((p->mm->pax_flags & MF_PAX_SEGMEXEC) && (info.contents & MODIFY_LDT_CONTENTS_CODE)) + return -EINVAL; +#endif + set_tls_desc(p, idx, &info, 1); return 0; @@ -163,7 +168,7 @@ int regset_tls_get(struct task_struct *t { const struct desc_struct *tls; - if (pos > GDT_ENTRY_TLS_ENTRIES * sizeof(struct user_desc) || + if (pos >= GDT_ENTRY_TLS_ENTRIES * sizeof(struct user_desc) || (pos % sizeof(struct user_desc)) != 0 || (count % sizeof(struct user_desc)) != 0) return -EINVAL; @@ -198,14 +203,14 @@ int regset_tls_set(struct task_struct *t struct user_desc infobuf[GDT_ENTRY_TLS_ENTRIES]; const struct user_desc *info; - if (pos > GDT_ENTRY_TLS_ENTRIES * sizeof(struct user_desc) || + if (pos >= GDT_ENTRY_TLS_ENTRIES * sizeof(struct user_desc) || (pos % sizeof(struct user_desc)) != 0 || (count % sizeof(struct user_desc)) != 0) return -EINVAL; if (kbuf) info = kbuf; - else if (__copy_from_user(infobuf, ubuf, count)) + else if (count > sizeof infobuf || __copy_from_user(infobuf, ubuf, count)) return -EFAULT; else info = infobuf; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/trampoline_32.S linux-2.6.32.59-pax/arch/x86/kernel/trampoline_32.S --- linux-2.6.32.59/arch/x86/kernel/trampoline_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/trampoline_32.S 2012-03-13 13:15:34.572098020 +0100 @@ -32,6 +32,12 @@ #include #include +#ifdef CONFIG_PAX_KERNEXEC +#define ta(X) (X) +#else +#define ta(X) ((X) - __PAGE_OFFSET) +#endif + /* We can free up trampoline after bootup if cpu hotplug is not supported. */ __CPUINITRODATA .code16 @@ -60,7 +66,7 @@ r_base = . inc %ax # protected mode (PE) bit lmsw %ax # into protected mode # flush prefetch and jump to startup_32_smp in arch/i386/kernel/head.S - ljmpl $__BOOT_CS, $(startup_32_smp-__PAGE_OFFSET) + ljmpl $__BOOT_CS, $ta(startup_32_smp) # These need to be in the same 64K segment as the above; # hence we don't use the boot_gdt_descr defined in head.S diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/trampoline_64.S linux-2.6.32.59-pax/arch/x86/kernel/trampoline_64.S --- linux-2.6.32.59/arch/x86/kernel/trampoline_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/trampoline_64.S 2012-03-13 13:15:34.572098020 +0100 @@ -91,7 +91,7 @@ startup_32: movl $__KERNEL_DS, %eax # Initialize the %ds segment register movl %eax, %ds - movl $X86_CR4_PAE, %eax + movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %eax movl %eax, %cr4 # Enable PAE mode # Setup trampoline 4 level pagetables @@ -138,7 +138,7 @@ tidt: # so the kernel can live anywhere .balign 4 tgdt: - .short tgdt_end - tgdt # gdt limit + .short tgdt_end - tgdt - 1 # gdt limit .long tgdt - r_base .short 0 .quad 0x00cf9b000000ffff # __KERNEL32_CS diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/traps.c linux-2.6.32.59-pax/arch/x86/kernel/traps.c --- linux-2.6.32.59/arch/x86/kernel/traps.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/traps.c 2012-03-13 13:15:34.576098020 +0100 @@ -69,12 +69,6 @@ asmlinkage int system_call(void); /* Do we ignore FPU interrupts ? */ char ignore_fpu_irq; - -/* - * The IDT has to be page-aligned to simplify the Pentium - * F0 0F bug workaround. - */ -gate_desc idt_table[NR_VECTORS] __page_aligned_data = { { { { 0, 0 } } }, }; #endif DECLARE_BITMAP(used_vectors, NR_VECTORS); @@ -112,19 +106,19 @@ static inline void preempt_conditional_c static inline void die_if_kernel(const char *str, struct pt_regs *regs, long err) { - if (!user_mode_vm(regs)) + if (!user_mode(regs)) die(str, regs, err); } #endif static void __kprobes -do_trap(int trapnr, int signr, char *str, struct pt_regs *regs, +do_trap(int trapnr, int signr, const char *str, struct pt_regs *regs, long error_code, siginfo_t *info) { struct task_struct *tsk = current; #ifdef CONFIG_X86_32 - if (regs->flags & X86_VM_MASK) { + if (v8086_mode(regs)) { /* * traps 0, 1, 3, 4, and 5 should be forwarded to vm86. * On nmi (interrupt 2), do_trap should not be called. @@ -135,7 +129,7 @@ do_trap(int trapnr, int signr, char *str } #endif - if (!user_mode(regs)) + if (!user_mode_novm(regs)) goto kernel_trap; #ifdef CONFIG_X86_32 @@ -158,7 +152,7 @@ trap_signal: printk_ratelimit()) { printk(KERN_INFO "%s[%d] trap %s ip:%lx sp:%lx error:%lx", - tsk->comm, tsk->pid, str, + tsk->comm, task_pid_nr(tsk), str, regs->ip, regs->sp, error_code); print_vma_addr(" in ", regs->ip); printk("\n"); @@ -175,8 +169,20 @@ kernel_trap: if (!fixup_exception(regs)) { tsk->thread.error_code = error_code; tsk->thread.trap_no = trapnr; + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + if (trapnr == 12 && ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS)) + str = "PAX: suspicious stack segment fault"; +#endif + die(str, regs, error_code); } + +#ifdef CONFIG_PAX_REFCOUNT + if (trapnr == 4) + pax_report_refcount_overflow(regs); +#endif + return; #ifdef CONFIG_X86_32 @@ -265,14 +271,30 @@ do_general_protection(struct pt_regs *re conditional_sti(regs); #ifdef CONFIG_X86_32 - if (regs->flags & X86_VM_MASK) + if (v8086_mode(regs)) goto gp_in_vm86; #endif tsk = current; - if (!user_mode(regs)) + if (!user_mode_novm(regs)) goto gp_in_kernel; +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) + if (!nx_enabled && tsk->mm && (tsk->mm->pax_flags & MF_PAX_PAGEEXEC)) { + struct mm_struct *mm = tsk->mm; + unsigned long limit; + + down_write(&mm->mmap_sem); + limit = mm->context.user_cs_limit; + if (limit < TASK_SIZE) { + track_exec_limit(mm, limit, TASK_SIZE, VM_EXEC); + up_write(&mm->mmap_sem); + return; + } + up_write(&mm->mmap_sem); + } +#endif + tsk->thread.error_code = error_code; tsk->thread.trap_no = 13; @@ -305,6 +327,13 @@ gp_in_kernel: if (notify_die(DIE_GPF, "general protection fault", regs, error_code, 13, SIGSEGV) == NOTIFY_STOP) return; + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + if ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS) + die("PAX: suspicious general protection fault", regs, error_code); + else +#endif + die("general protection fault", regs, error_code); } @@ -435,6 +464,17 @@ static notrace __kprobes void default_do dotraplinkage notrace __kprobes void do_nmi(struct pt_regs *regs, long error_code) { + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + if (!user_mode(regs)) { + unsigned long cs = regs->cs & 0xFFFF; + unsigned long ip = ktva_ktla(regs->ip); + + if ((cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS) && ip <= (unsigned long)_etext) + regs->ip = ip; + } +#endif + nmi_enter(); inc_irq_stat(__nmi_count); @@ -558,7 +598,7 @@ dotraplinkage void __kprobes do_debug(st } #ifdef CONFIG_X86_32 - if (regs->flags & X86_VM_MASK) + if (v8086_mode(regs)) goto debug_vm86; #endif @@ -570,7 +610,7 @@ dotraplinkage void __kprobes do_debug(st * kernel space (but re-enable TF when returning to user mode). */ if (condition & DR_STEP) { - if (!user_mode(regs)) + if (!user_mode_novm(regs)) goto clear_TF_reenable; } @@ -757,7 +797,7 @@ do_simd_coprocessor_error(struct pt_regs * Handle strange cache flush from user space exception * in all other cases. This is undocumented behaviour. */ - if (regs->flags & X86_VM_MASK) { + if (v8086_mode(regs)) { handle_vm86_fault((struct kernel_vm86_regs *)regs, error_code); return; } @@ -798,7 +838,7 @@ asmlinkage void __attribute__((weak)) sm void __math_state_restore(void) { struct thread_info *thread = current_thread_info(); - struct task_struct *tsk = thread->task; + struct task_struct *tsk = current; /* * Paranoid restore. send a SIGSEGV if we fail to restore the state. @@ -825,8 +865,7 @@ void __math_state_restore(void) */ asmlinkage void math_state_restore(void) { - struct thread_info *thread = current_thread_info(); - struct task_struct *tsk = thread->task; + struct task_struct *tsk = current; if (!tsk_used_math(tsk)) { local_irq_enable(); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/vm86_32.c linux-2.6.32.59-pax/arch/x86/kernel/vm86_32.c --- linux-2.6.32.59/arch/x86/kernel/vm86_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/vm86_32.c 2012-05-20 19:21:25.325167265 +0200 @@ -148,7 +148,7 @@ struct pt_regs *save_v86_state(struct ke do_exit(SIGSEGV); } - tss = &per_cpu(init_tss, get_cpu()); + tss = init_tss + get_cpu(); current->thread.sp0 = current->thread.saved_sp0; current->thread.sysenter_cs = __KERNEL_CS; load_sp0(tss, ¤t->thread); @@ -324,7 +324,7 @@ static void do_sys_vm86(struct kernel_vm tsk->thread.saved_fs = info->regs32->fs; tsk->thread.saved_gs = get_user_gs(info->regs32); - tss = &per_cpu(init_tss, get_cpu()); + tss = init_tss + get_cpu(); tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0; if (cpu_has_sep) tsk->thread.sysenter_cs = 0; @@ -529,7 +529,7 @@ static void do_int(struct kernel_vm86_re goto cannot_handle; if (i == 0x21 && is_revectored(AH(regs), &KVM86->int21_revectored)) goto cannot_handle; - intr_ptr = (unsigned long __user *) (i << 2); + intr_ptr = (__force unsigned long __user *) (i << 2); if (get_user(segoffs, intr_ptr)) goto cannot_handle; if ((segoffs >> 16) == BIOSSEG) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/vmi_32.c linux-2.6.32.59-pax/arch/x86/kernel/vmi_32.c --- linux-2.6.32.59/arch/x86/kernel/vmi_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/vmi_32.c 2012-03-13 13:15:34.576098020 +0100 @@ -44,12 +44,17 @@ typedef u32 __attribute__((regparm(1))) typedef u64 __attribute__((regparm(2))) (VROMLONGFUNC)(int); #define call_vrom_func(rom,func) \ - (((VROMFUNC *)(rom->func))()) + (((VROMFUNC *)(ktva_ktla(rom.func)))()) #define call_vrom_long_func(rom,func,arg) \ - (((VROMLONGFUNC *)(rom->func)) (arg)) +({\ + u64 __reloc = ((VROMLONGFUNC *)(ktva_ktla(rom.func))) (arg);\ + struct vmi_relocation_info *const __rel = (struct vmi_relocation_info *)&__reloc;\ + __rel->eip = (unsigned char *)ktva_ktla((unsigned long)__rel->eip);\ + __reloc;\ +}) -static struct vrom_header *vmi_rom; +static struct vrom_header vmi_rom __attribute((__section__(".vmi.rom"), __aligned__(PAGE_SIZE))); static int disable_pge; static int disable_pse; static int disable_sep; @@ -76,10 +81,10 @@ static struct { void (*set_initial_ap_state)(int, int); void (*halt)(void); void (*set_lazy_mode)(int mode); -} vmi_ops; +} __no_const vmi_ops __read_only; /* Cached VMI operations */ -struct vmi_timer_ops vmi_timer_ops; +struct vmi_timer_ops vmi_timer_ops __read_only; /* * VMI patching routines. @@ -94,7 +99,7 @@ struct vmi_timer_ops vmi_timer_ops; static inline void patch_offset(void *insnbuf, unsigned long ip, unsigned long dest) { - *(unsigned long *)(insnbuf+1) = dest-ip-5; + *(unsigned long *)(insnbuf+1) = dest-ip-5; } static unsigned patch_internal(int call, unsigned len, void *insnbuf, @@ -102,6 +107,7 @@ static unsigned patch_internal(int call, { u64 reloc; struct vmi_relocation_info *const rel = (struct vmi_relocation_info *)&reloc; + reloc = call_vrom_long_func(vmi_rom, get_reloc, call); switch(rel->type) { case VMI_RELOCATION_CALL_REL: @@ -404,13 +410,13 @@ static void vmi_set_pud(pud_t *pudp, pud static void vmi_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - const pte_t pte = { .pte = 0 }; + const pte_t pte = __pte(0ULL); vmi_ops.set_pte(pte, ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0)); } static void vmi_pmd_clear(pmd_t *pmd) { - const pte_t pte = { .pte = 0 }; + const pte_t pte = __pte(0ULL); vmi_ops.set_pte(pte, (pte_t *)pmd, VMI_PAGE_PD); } #endif @@ -438,10 +444,10 @@ vmi_startup_ipi_hook(int phys_apicid, un ap.ss = __KERNEL_DS; ap.esp = (unsigned long) start_esp; - ap.ds = __USER_DS; - ap.es = __USER_DS; + ap.ds = __KERNEL_DS; + ap.es = __KERNEL_DS; ap.fs = __KERNEL_PERCPU; - ap.gs = __KERNEL_STACK_CANARY; + savesegment(gs, ap.gs); ap.eflags = 0; @@ -486,6 +492,18 @@ static void vmi_leave_lazy_mmu(void) paravirt_leave_lazy_mmu(); } +#ifdef CONFIG_PAX_KERNEXEC +static unsigned long vmi_pax_open_kernel(void) +{ + return 0; +} + +static unsigned long vmi_pax_close_kernel(void) +{ + return 0; +} +#endif + static inline int __init check_vmi_rom(struct vrom_header *rom) { struct pci_header *pci; @@ -498,6 +516,10 @@ static inline int __init check_vmi_rom(s return 0; if (rom->vrom_signature != VMI_SIGNATURE) return 0; + if (rom->rom_length * 512 > sizeof(*rom)) { + printk(KERN_WARNING "PAX: VMI: ROM size too big: %x\n", rom->rom_length * 512); + return 0; + } if (rom->api_version_maj != VMI_API_REV_MAJOR || rom->api_version_min+1 < VMI_API_REV_MINOR+1) { printk(KERN_WARNING "VMI: Found mismatched rom version %d.%d\n", @@ -562,7 +584,7 @@ static inline int __init probe_vmi_rom(v struct vrom_header *romstart; romstart = (struct vrom_header *)isa_bus_to_virt(base); if (check_vmi_rom(romstart)) { - vmi_rom = romstart; + vmi_rom = *romstart; return 1; } } @@ -836,6 +858,11 @@ static inline int __init activate_vmi(vo para_fill(pv_irq_ops.safe_halt, Halt); +#ifdef CONFIG_PAX_KERNEXEC + pv_mmu_ops.pax_open_kernel = vmi_pax_open_kernel; + pv_mmu_ops.pax_close_kernel = vmi_pax_close_kernel; +#endif + /* * Alternative instruction rewriting doesn't happen soon enough * to convert VMI_IRET to a call instead of a jump; so we have @@ -853,16 +880,16 @@ static inline int __init activate_vmi(vo void __init vmi_init(void) { - if (!vmi_rom) + if (!vmi_rom.rom_signature) probe_vmi_rom(); else - check_vmi_rom(vmi_rom); + check_vmi_rom(&vmi_rom); /* In case probing for or validating the ROM failed, basil */ - if (!vmi_rom) + if (!vmi_rom.rom_signature) return; - reserve_top_address(-vmi_rom->virtual_top); + reserve_top_address(-vmi_rom.virtual_top); #ifdef CONFIG_X86_IO_APIC /* This is virtual hardware; timer routing is wired correctly */ @@ -874,7 +901,7 @@ void __init vmi_activate(void) { unsigned long flags; - if (!vmi_rom) + if (!vmi_rom.rom_signature) return; local_irq_save(flags); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/vmlinux.lds.S linux-2.6.32.59-pax/arch/x86/kernel/vmlinux.lds.S --- linux-2.6.32.59/arch/x86/kernel/vmlinux.lds.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/vmlinux.lds.S 2012-07-31 00:31:25.424075303 +0200 @@ -26,6 +26,13 @@ #include #include #include +#include + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) +#define __KERNEL_TEXT_OFFSET (LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR) +#else +#define __KERNEL_TEXT_OFFSET 0 +#endif #undef i386 /* in case the preprocessor is a 32bit one */ @@ -34,40 +41,53 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONF #ifdef CONFIG_X86_32 OUTPUT_ARCH(i386) ENTRY(phys_startup_32) -jiffies = jiffies_64; #else OUTPUT_ARCH(i386:x86-64) ENTRY(phys_startup_64) -jiffies_64 = jiffies; #endif PHDRS { text PT_LOAD FLAGS(5); /* R_E */ - data PT_LOAD FLAGS(7); /* RWE */ +#ifdef CONFIG_X86_32 + module PT_LOAD FLAGS(5); /* R_E */ +#endif +#ifdef CONFIG_XEN + rodata PT_LOAD FLAGS(5); /* R_E */ +#else + rodata PT_LOAD FLAGS(4); /* R__ */ +#endif + data PT_LOAD FLAGS(6); /* RW_ */ #ifdef CONFIG_X86_64 user PT_LOAD FLAGS(5); /* R_E */ +#endif + init.begin PT_LOAD FLAGS(6); /* RW_ */ #ifdef CONFIG_SMP percpu PT_LOAD FLAGS(6); /* RW_ */ #endif + text.init PT_LOAD FLAGS(5); /* R_E */ + text.exit PT_LOAD FLAGS(5); /* R_E */ init PT_LOAD FLAGS(7); /* RWE */ -#endif note PT_NOTE FLAGS(0); /* ___ */ } SECTIONS { #ifdef CONFIG_X86_32 - . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR; - phys_startup_32 = startup_32 - LOAD_OFFSET; + . = LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR; #else - . = __START_KERNEL; - phys_startup_64 = startup_64 - LOAD_OFFSET; + . = __START_KERNEL; #endif /* Text and read-only data */ - .text : AT(ADDR(.text) - LOAD_OFFSET) { - _text = .; + .text (. - __KERNEL_TEXT_OFFSET): AT(ADDR(.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { /* bootstrapping code */ +#ifdef CONFIG_X86_32 + phys_startup_32 = startup_32 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; +#else + phys_startup_64 = startup_64 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; +#endif + __LOAD_PHYSICAL_ADDR = . - LOAD_OFFSET + __KERNEL_TEXT_OFFSET; + _text = .; HEAD_TEXT #ifdef CONFIG_X86_32 . = ALIGN(PAGE_SIZE); @@ -82,28 +102,72 @@ SECTIONS IRQENTRY_TEXT *(.fixup) *(.gnu.warning) - /* End of text section */ - _etext = .; } :text = 0x9090 - NOTES :text :note + . += __KERNEL_TEXT_OFFSET; + +#ifdef CONFIG_X86_32 + . = ALIGN(PAGE_SIZE); + .vmi.rom : AT(ADDR(.vmi.rom) - LOAD_OFFSET) { + *(.vmi.rom) + } :module + + . = ALIGN(PAGE_SIZE); + .module.text : AT(ADDR(.module.text) - LOAD_OFFSET) { + +#if defined(CONFIG_PAX_KERNEXEC) && defined(CONFIG_MODULES) + MODULES_EXEC_VADDR = .; + BYTE(0) + . += (CONFIG_PAX_KERNEXEC_MODULE_TEXT * 1024 * 1024); + . = ALIGN(HPAGE_SIZE) - 1; + MODULES_EXEC_END = .; +#endif + + } :module +#endif - EXCEPTION_TABLE(16) :text = 0x9090 + .text.end : AT(ADDR(.text.end) - LOAD_OFFSET) { + /* End of text section */ + BYTE(0) + _etext = . - __KERNEL_TEXT_OFFSET; + } + +#ifdef CONFIG_X86_32 + . = ALIGN(PAGE_SIZE); + .rodata.page_aligned : AT(ADDR(.rodata.page_aligned) - LOAD_OFFSET) { + *(.idt) + . = ALIGN(PAGE_SIZE); + *(.empty_zero_page) + *(.swapper_pg_fixmap) + *(.swapper_pg_pmd) + *(.swapper_pg_dir) + *(.trampoline_pg_dir) + } :rodata +#endif + + . = ALIGN(PAGE_SIZE); + NOTES :rodata :note + + EXCEPTION_TABLE(16) :rodata RO_DATA(PAGE_SIZE) /* Data */ .data : AT(ADDR(.data) - LOAD_OFFSET) { + +#ifdef CONFIG_PAX_KERNEXEC + . = ALIGN(HPAGE_SIZE); +#else + . = ALIGN(PAGE_SIZE); +#endif + /* Start of data section */ _sdata = .; /* init_task */ INIT_TASK_DATA(THREAD_SIZE) -#ifdef CONFIG_X86_32 - /* 32 bit has nosave before _edata */ NOSAVE_DATA -#endif PAGE_ALIGNED_DATA(PAGE_SIZE) @@ -112,6 +176,8 @@ SECTIONS DATA_DATA CONSTRUCTORS + jiffies = jiffies_64; + /* rarely changed data like cpu maps */ READ_MOSTLY_DATA(CONFIG_X86_INTERNODE_CACHE_BYTES) @@ -166,12 +232,6 @@ SECTIONS } vgetcpu_mode = VVIRT(.vgetcpu_mode); - . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); - .jiffies : AT(VLOAD(.jiffies)) { - *(.jiffies) - } - jiffies = VVIRT(.jiffies); - .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { *(.vsyscall_3) } @@ -187,12 +247,19 @@ SECTIONS #endif /* CONFIG_X86_64 */ /* Init code and data - will be freed after init */ - . = ALIGN(PAGE_SIZE); .init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) { + BYTE(0) + +#ifdef CONFIG_PAX_KERNEXEC + . = ALIGN(HPAGE_SIZE); +#else + . = ALIGN(PAGE_SIZE); +#endif + __init_begin = .; /* paired with __init_end */ - } + } :init.begin -#if defined(CONFIG_X86_64) && defined(CONFIG_SMP) +#ifdef CONFIG_SMP /* * percpu offsets are zero-based on SMP. PERCPU_VADDR() changes the * output PHDR, so the next output section - .init.text - should @@ -201,12 +268,27 @@ SECTIONS PERCPU_VADDR(0, :percpu) #endif - INIT_TEXT_SECTION(PAGE_SIZE) -#ifdef CONFIG_X86_64 - :init -#endif + . = ALIGN(PAGE_SIZE); + init_begin = .; + .init.text (. - __KERNEL_TEXT_OFFSET): AT(init_begin - LOAD_OFFSET) { + VMLINUX_SYMBOL(_sinittext) = .; + INIT_TEXT + VMLINUX_SYMBOL(_einittext) = .; + . = ALIGN(PAGE_SIZE); + } :text.init - INIT_DATA_SECTION(16) + /* + * .exit.text is discard at runtime, not link time, to deal with + * references from .altinstructions and .eh_frame + */ + .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) { + EXIT_TEXT + . = ALIGN(16); + } :text.exit + . = init_begin + SIZEOF(.init.text) + SIZEOF(.exit.text); + + . = ALIGN(PAGE_SIZE); + INIT_DATA_SECTION(16) :init .x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) { __x86_cpu_dev_start = .; @@ -232,19 +314,11 @@ SECTIONS *(.altinstr_replacement) } - /* - * .exit.text is discard at runtime, not link time, to deal with - * references from .altinstructions and .eh_frame - */ - .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { - EXIT_TEXT - } - .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { EXIT_DATA } -#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP) +#ifndef CONFIG_SMP PERCPU(PAGE_SIZE) #endif @@ -267,12 +341,6 @@ SECTIONS . = ALIGN(PAGE_SIZE); } -#ifdef CONFIG_X86_64 - .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { - NOSAVE_DATA - } -#endif - /* BSS */ . = ALIGN(PAGE_SIZE); .bss : AT(ADDR(.bss) - LOAD_OFFSET) { @@ -288,6 +356,7 @@ SECTIONS __brk_base = .; . += 64 * 1024; /* 64k alignment slop space */ *(.brk_reservation) /* areas brk users have reserved */ + . = ALIGN(HPAGE_SIZE); __brk_limit = .; } @@ -316,13 +385,12 @@ SECTIONS * for the boot processor. */ #define INIT_PER_CPU(x) init_per_cpu__##x = per_cpu__##x + __per_cpu_load -INIT_PER_CPU(gdt_page); INIT_PER_CPU(irq_stack_union); /* * Build-time check on the image size: */ -. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE), +. = ASSERT((_end - _text - __KERNEL_TEXT_OFFSET <= KERNEL_IMAGE_SIZE), "kernel image bigger than KERNEL_IMAGE_SIZE"); #ifdef CONFIG_SMP diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/vsyscall_64.c linux-2.6.32.59-pax/arch/x86/kernel/vsyscall_64.c --- linux-2.6.32.59/arch/x86/kernel/vsyscall_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/vsyscall_64.c 2012-03-13 13:15:34.580098020 +0100 @@ -80,6 +80,7 @@ void update_vsyscall(struct timespec *wa write_seqlock_irqsave(&vsyscall_gtod_data.lock, flags); /* copy vsyscall data */ + strlcpy(vsyscall_gtod_data.clock.name, clock->name, sizeof vsyscall_gtod_data.clock.name); vsyscall_gtod_data.clock.vread = clock->vread; vsyscall_gtod_data.clock.cycle_last = clock->cycle_last; vsyscall_gtod_data.clock.mask = clock->mask; @@ -203,7 +204,7 @@ vgetcpu(unsigned *cpu, unsigned *node, s We do this here because otherwise user space would do it on its own in a likely inferior way (no access to jiffies). If you don't like it pass NULL. */ - if (tcache && tcache->blob[0] == (j = __jiffies)) { + if (tcache && tcache->blob[0] == (j = jiffies)) { p = tcache->blob[1]; } else if (__vgetcpu_mode == VGETCPU_RDTSCP) { /* Load per CPU data from RDTSCP */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/x8664_ksyms_64.c linux-2.6.32.59-pax/arch/x86/kernel/x8664_ksyms_64.c --- linux-2.6.32.59/arch/x86/kernel/x8664_ksyms_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/x8664_ksyms_64.c 2012-03-13 13:15:34.580098020 +0100 @@ -30,8 +30,6 @@ EXPORT_SYMBOL(__put_user_8); EXPORT_SYMBOL(copy_user_generic); EXPORT_SYMBOL(__copy_user_nocache); -EXPORT_SYMBOL(copy_from_user); -EXPORT_SYMBOL(copy_to_user); EXPORT_SYMBOL(__copy_from_user_inatomic); EXPORT_SYMBOL(copy_page); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kernel/xsave.c linux-2.6.32.59-pax/arch/x86/kernel/xsave.c --- linux-2.6.32.59/arch/x86/kernel/xsave.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kernel/xsave.c 2012-03-13 13:15:34.580098020 +0100 @@ -54,7 +54,7 @@ int check_for_xstate(struct i387_fxsave_ fx_sw_user->xstate_size > fx_sw_user->extended_size) return -1; - err = __get_user(magic2, (__u32 *) (((void *)fpstate) + + err = __get_user(magic2, (__u32 __user *) (((void __user *)fpstate) + fx_sw_user->extended_size - FP_XSTATE_MAGIC2_SIZE)); /* @@ -196,7 +196,7 @@ fx_only: * the other extended state. */ xrstor_state(init_xstate_buf, pcntxt_mask & ~XSTATE_FPSSE); - return fxrstor_checking((__force struct i387_fxsave_struct *)buf); + return fxrstor_checking((struct i387_fxsave_struct __force_kernel *)buf); } /* @@ -228,7 +228,7 @@ int restore_i387_xstate(void __user *buf if (task_thread_info(tsk)->status & TS_XSAVE) err = restore_user_xstate(buf); else - err = fxrstor_checking((__force struct i387_fxsave_struct *) + err = fxrstor_checking((struct i387_fxsave_struct __user *) buf); if (unlikely(err)) { /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kvm/emulate.c linux-2.6.32.59-pax/arch/x86/kvm/emulate.c --- linux-2.6.32.59/arch/x86/kvm/emulate.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kvm/emulate.c 2012-03-13 13:15:34.580098020 +0100 @@ -81,8 +81,8 @@ #define Src2CL (1<<29) #define Src2ImmByte (2<<29) #define Src2One (3<<29) -#define Src2Imm16 (4<<29) -#define Src2Mask (7<<29) +#define Src2Imm16 (4U<<29) +#define Src2Mask (7U<<29) enum { Group1_80, Group1_81, Group1_82, Group1_83, @@ -411,6 +411,7 @@ static u32 group2_table[] = { #define ____emulate_2op(_op, _src, _dst, _eflags, _x, _y, _suffix) \ do { \ + unsigned long _tmp; \ __asm__ __volatile__ ( \ _PRE_EFLAGS("0", "4", "2") \ _op _suffix " %"_x"3,%1; " \ @@ -424,8 +425,6 @@ static u32 group2_table[] = { /* Raw emulation: instruction has two explicit operands. */ #define __emulate_2op_nobyte(_op,_src,_dst,_eflags,_wx,_wy,_lx,_ly,_qx,_qy) \ do { \ - unsigned long _tmp; \ - \ switch ((_dst).bytes) { \ case 2: \ ____emulate_2op(_op,_src,_dst,_eflags,_wx,_wy,"w"); \ @@ -441,7 +440,6 @@ static u32 group2_table[] = { #define __emulate_2op(_op,_src,_dst,_eflags,_bx,_by,_wx,_wy,_lx,_ly,_qx,_qy) \ do { \ - unsigned long _tmp; \ switch ((_dst).bytes) { \ case 1: \ ____emulate_2op(_op,_src,_dst,_eflags,_bx,_by,"b"); \ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kvm/lapic.c linux-2.6.32.59-pax/arch/x86/kvm/lapic.c --- linux-2.6.32.59/arch/x86/kvm/lapic.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kvm/lapic.c 2012-03-13 13:15:34.584098019 +0100 @@ -52,7 +52,7 @@ #define APIC_BUS_CYCLE_NS 1 /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */ -#define apic_debug(fmt, arg...) +#define apic_debug(fmt, arg...) do {} while (0) #define APIC_LVT_NUM 6 /* 14 is the version for Xeon and Pentium 8.4.8*/ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kvm/paging_tmpl.h linux-2.6.32.59-pax/arch/x86/kvm/paging_tmpl.h --- linux-2.6.32.59/arch/x86/kvm/paging_tmpl.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kvm/paging_tmpl.h 2012-03-13 13:15:34.584098019 +0100 @@ -461,6 +461,7 @@ static int FNAME(page_fault)(struct kvm_ kvm_mmu_free_some_pages(vcpu); sptep = FNAME(fetch)(vcpu, addr, &walker, user_fault, write_fault, level, &write_pt, pfn); + (void)sptep; pgprintk("%s: shadow pte %p %llx ptwrite %d\n", __func__, sptep, *sptep, write_pt); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kvm/svm.c linux-2.6.32.59-pax/arch/x86/kvm/svm.c --- linux-2.6.32.59/arch/x86/kvm/svm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kvm/svm.c 2012-04-16 12:38:10.890343014 +0200 @@ -2486,7 +2486,11 @@ static void reload_tss(struct kvm_vcpu * int cpu = raw_smp_processor_id(); struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu); + + pax_open_kernel(); svm_data->tss_desc->type = 9; /* available 32/64-bit TSS */ + pax_close_kernel(); + load_TR_desc(); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kvm/vmx.c linux-2.6.32.59-pax/arch/x86/kvm/vmx.c --- linux-2.6.32.59/arch/x86/kvm/vmx.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kvm/vmx.c 2012-09-17 23:35:31.133743609 +0200 @@ -570,7 +570,11 @@ static void reload_tss(void) kvm_get_gdt(&gdt); descs = (void *)gdt.base; + + pax_open_kernel(); descs[GDT_ENTRY_TSS].type = 9; /* available TSS */ + pax_close_kernel(); + load_TR_desc(); } @@ -746,6 +750,10 @@ static void vmx_vcpu_load(struct kvm_vcp kvm_get_gdt(&dt); vmcs_writel(HOST_GDTR_BASE, dt.base); /* 22.2.4 */ +#ifdef CONFIG_PAX_PER_CPU_PGD + vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */ +#endif + rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp); vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */ @@ -1410,8 +1418,11 @@ static __init int hardware_setup(void) if (!cpu_has_vmx_flexpriority()) flexpriority_enabled = 0; - if (!cpu_has_vmx_tpr_shadow()) - kvm_x86_ops->update_cr8_intercept = NULL; + if (!cpu_has_vmx_tpr_shadow()) { + pax_open_kernel(); + *(void **)&kvm_x86_ops->update_cr8_intercept = NULL; + pax_close_kernel(); + } if (enable_ept && !cpu_has_vmx_ept_2m_page()) kvm_disable_largepages(); @@ -2338,7 +2349,10 @@ static int vmx_vcpu_setup(struct vcpu_vm vmcs_writel(HOST_CR0, read_cr0()); /* 22.2.3 */ vmcs_writel(HOST_CR4, read_cr4()); /* 22.2.3, 22.2.5 */ + +#ifndef CONFIG_PAX_PER_CPU_PGD vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */ +#endif vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS); /* 22.2.4 */ vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS); /* 22.2.4 */ @@ -2362,7 +2376,7 @@ static int vmx_vcpu_setup(struct vcpu_vm vmcs_writel(HOST_IDTR_BASE, dt.base); /* 22.2.4 */ asm("mov $.Lkvm_vmx_return, %0" : "=r"(kvm_vmx_return)); - vmcs_writel(HOST_RIP, kvm_vmx_return); /* 22.2.5 */ + vmcs_writel(HOST_RIP, ktla_ktva(kvm_vmx_return)); /* 22.2.5 */ vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0); vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0); vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0); @@ -3718,6 +3732,12 @@ static void vmx_vcpu_run(struct kvm_vcpu "jmp .Lkvm_vmx_return \n\t" ".Llaunched: " __ex(ASM_VMX_VMRESUME) "\n\t" ".Lkvm_vmx_return: " + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + "ljmp %[cs],$.Lkvm_vmx_return2\n\t" + ".Lkvm_vmx_return2: " +#endif + /* Save guest registers, load host registers, keep flags */ "xchg %0, (%%"R"sp) \n\t" "mov %%"R"ax, %c[rax](%0) \n\t" @@ -3764,8 +3784,13 @@ static void vmx_vcpu_run(struct kvm_vcpu [r15]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R15])), #endif [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)) + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + ,[cs]"i"(__KERNEL_CS) +#endif + : "cc", "memory" - , R"bx", R"di", R"si" + , R"ax", R"bx", R"di", R"si" #ifdef CONFIG_X86_64 , "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" #endif @@ -3782,7 +3807,16 @@ static void vmx_vcpu_run(struct kvm_vcpu if (vmx->rmode.irq.pending) fixup_rmode_irq(vmx); - asm("mov %0, %%ds; mov %0, %%es" : : "r"(__USER_DS)); + asm("mov %0, %%ds; mov %0, %%es; mov %0, %%ss" : : "r"(__KERNEL_DS)); + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + loadsegment(fs, __KERNEL_PERCPU); +#endif + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) + __set_fs(current_thread_info()->addr_limit); +#endif + vmx->launched = 1; vmx_complete_interrupts(vmx); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/kvm/x86.c linux-2.6.32.59-pax/arch/x86/kvm/x86.c --- linux-2.6.32.59/arch/x86/kvm/x86.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/kvm/x86.c 2012-05-20 19:25:45.769181374 +0200 @@ -1430,15 +1430,20 @@ static int kvm_vcpu_ioctl_set_cpuid2(str struct kvm_cpuid2 *cpuid, struct kvm_cpuid_entry2 __user *entries) { - int r; + int r, i; r = -E2BIG; if (cpuid->nent > KVM_MAX_CPUID_ENTRIES) goto out; r = -EFAULT; - if (copy_from_user(&vcpu->arch.cpuid_entries, entries, - cpuid->nent * sizeof(struct kvm_cpuid_entry2))) + if (!access_ok(VERIFY_READ, entries, cpuid->nent * sizeof(struct kvm_cpuid_entry2))) goto out; + for (i = 0; i < cpuid->nent; ++i) { + struct kvm_cpuid_entry2 cpuid_entry; + if (__copy_from_user(&cpuid_entry, entries + i, sizeof(cpuid_entry))) + goto out; + vcpu->arch.cpuid_entries[i] = cpuid_entry; + } vcpu->arch.cpuid_nent = cpuid->nent; kvm_apic_set_version(vcpu); return 0; @@ -1451,16 +1456,20 @@ static int kvm_vcpu_ioctl_get_cpuid2(str struct kvm_cpuid2 *cpuid, struct kvm_cpuid_entry2 __user *entries) { - int r; + int r, i; vcpu_load(vcpu); r = -E2BIG; if (cpuid->nent < vcpu->arch.cpuid_nent) goto out; r = -EFAULT; - if (copy_to_user(entries, &vcpu->arch.cpuid_entries, - vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2))) + if (!access_ok(VERIFY_WRITE, entries, vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2))) goto out; + for (i = 0; i < vcpu->arch.cpuid_nent; ++i) { + struct kvm_cpuid_entry2 cpuid_entry = vcpu->arch.cpuid_entries[i]; + if (__copy_to_user(entries + i, &cpuid_entry, sizeof(cpuid_entry))) + goto out; + } return 0; out: @@ -1678,7 +1687,7 @@ static int kvm_vcpu_ioctl_set_lapic(stru static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { - if (irq->irq < 0 || irq->irq >= 256) + if (irq->irq >= 256) return -EINVAL; if (irqchip_in_kernel(vcpu->kvm)) return -ENXIO; @@ -3260,7 +3269,7 @@ static struct notifier_block kvmclock_cp .notifier_call = kvmclock_cpufreq_notifier }; -int kvm_arch_init(void *opaque) +int kvm_arch_init(const void *opaque) { int r, cpu; struct kvm_x86_ops *ops = (struct kvm_x86_ops *)opaque; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lguest/boot.c linux-2.6.32.59-pax/arch/x86/lguest/boot.c --- linux-2.6.32.59/arch/x86/lguest/boot.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lguest/boot.c 2012-09-26 14:56:36.736344198 +0200 @@ -1088,12 +1088,12 @@ static u32 lguest_apic_safe_wait_icr_idl static void set_lguest_basic_apic_ops(void) { - apic->read = lguest_apic_read; - apic->write = lguest_apic_write; - apic->icr_read = lguest_apic_icr_read; - apic->icr_write = lguest_apic_icr_write; - apic->wait_icr_idle = lguest_apic_wait_icr_idle; - apic->safe_wait_icr_idle = lguest_apic_safe_wait_icr_idle; + *(void **)&apic->read = lguest_apic_read; + *(void **)&apic->write = lguest_apic_write; + *(void **)&apic->icr_read = lguest_apic_icr_read; + *(void **)&apic->icr_write = lguest_apic_icr_write; + *(void **)&apic->wait_icr_idle = lguest_apic_wait_icr_idle; + *(void **)&apic->safe_wait_icr_idle = lguest_apic_safe_wait_icr_idle; }; #endif @@ -1172,9 +1172,10 @@ static __init int early_put_chars(u32 vt * Rebooting also tells the Host we're finished, but the RESTART flag tells the * Launcher to reboot us. */ -static void lguest_restart(char *reason) +static __noreturn void lguest_restart(char *reason) { kvm_hypercall2(LHCALL_SHUTDOWN, __pa(reason), LGUEST_SHUTDOWN_RESTART); + BUG(); } /*G:050 diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/atomic64_32.c linux-2.6.32.59-pax/arch/x86/lib/atomic64_32.c --- linux-2.6.32.59/arch/x86/lib/atomic64_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/atomic64_32.c 2012-03-13 13:15:34.596098019 +0100 @@ -25,6 +25,12 @@ u64 atomic64_cmpxchg(atomic64_t *ptr, u6 } EXPORT_SYMBOL(atomic64_cmpxchg); +u64 atomic64_cmpxchg_unchecked(atomic64_unchecked_t *ptr, u64 old_val, u64 new_val) +{ + return cmpxchg8b(&ptr->counter, old_val, new_val); +} +EXPORT_SYMBOL(atomic64_cmpxchg_unchecked); + /** * atomic64_xchg - xchg atomic64 variable * @ptr: pointer to type atomic64_t @@ -56,6 +62,36 @@ u64 atomic64_xchg(atomic64_t *ptr, u64 n EXPORT_SYMBOL(atomic64_xchg); /** + * atomic64_xchg_unchecked - xchg atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * @new_val: value to assign + * + * Atomically xchgs the value of @ptr to @new_val and returns + * the old value. + */ +u64 atomic64_xchg_unchecked(atomic64_unchecked_t *ptr, u64 new_val) +{ + /* + * Try first with a (possibly incorrect) assumption about + * what we have there. We'll do two loops most likely, + * but we'll get an ownership MESI transaction straight away + * instead of a read transaction followed by a + * flush-for-ownership transaction: + */ + u64 old_val, real_val = 0; + + do { + old_val = real_val; + + real_val = atomic64_cmpxchg_unchecked(ptr, old_val, new_val); + + } while (real_val != old_val); + + return old_val; +} +EXPORT_SYMBOL(atomic64_xchg_unchecked); + +/** * atomic64_set - set atomic64 variable * @ptr: pointer to type atomic64_t * @new_val: value to assign @@ -69,7 +105,19 @@ void atomic64_set(atomic64_t *ptr, u64 n EXPORT_SYMBOL(atomic64_set); /** -EXPORT_SYMBOL(atomic64_read); + * atomic64_unchecked_set - set atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * @new_val: value to assign + * + * Atomically sets the value of @ptr to @new_val. + */ +void atomic64_set_unchecked(atomic64_unchecked_t *ptr, u64 new_val) +{ + atomic64_xchg_unchecked(ptr, new_val); +} +EXPORT_SYMBOL(atomic64_set_unchecked); + +/** * atomic64_add_return - add and return * @delta: integer value to add * @ptr: pointer to type atomic64_t @@ -99,24 +147,72 @@ noinline u64 atomic64_add_return(u64 del } EXPORT_SYMBOL(atomic64_add_return); +/** + * atomic64_add_return_unchecked - add and return + * @delta: integer value to add + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically adds @delta to @ptr and returns @delta + *@ptr + */ +noinline u64 atomic64_add_return_unchecked(u64 delta, atomic64_unchecked_t *ptr) +{ + /* + * Try first with a (possibly incorrect) assumption about + * what we have there. We'll do two loops most likely, + * but we'll get an ownership MESI transaction straight away + * instead of a read transaction followed by a + * flush-for-ownership transaction: + */ + u64 old_val, new_val, real_val = 0; + + do { + old_val = real_val; + new_val = old_val + delta; + + real_val = atomic64_cmpxchg_unchecked(ptr, old_val, new_val); + + } while (real_val != old_val); + + return new_val; +} +EXPORT_SYMBOL(atomic64_add_return_unchecked); + u64 atomic64_sub_return(u64 delta, atomic64_t *ptr) { return atomic64_add_return(-delta, ptr); } EXPORT_SYMBOL(atomic64_sub_return); +u64 atomic64_sub_return_unchecked(u64 delta, atomic64_unchecked_t *ptr) +{ + return atomic64_add_return_unchecked(-delta, ptr); +} +EXPORT_SYMBOL(atomic64_sub_return_unchecked); + u64 atomic64_inc_return(atomic64_t *ptr) { return atomic64_add_return(1, ptr); } EXPORT_SYMBOL(atomic64_inc_return); +u64 atomic64_inc_return_unchecked(atomic64_unchecked_t *ptr) +{ + return atomic64_add_return_unchecked(1, ptr); +} +EXPORT_SYMBOL(atomic64_inc_return_unchecked); + u64 atomic64_dec_return(atomic64_t *ptr) { return atomic64_sub_return(1, ptr); } EXPORT_SYMBOL(atomic64_dec_return); +u64 atomic64_dec_return_unchecked(atomic64_unchecked_t *ptr) +{ + return atomic64_sub_return_unchecked(1, ptr); +} +EXPORT_SYMBOL(atomic64_dec_return_unchecked); + /** * atomic64_add - add integer to atomic64 variable * @delta: integer value to add @@ -131,6 +227,19 @@ void atomic64_add(u64 delta, atomic64_t EXPORT_SYMBOL(atomic64_add); /** + * atomic64_add_unchecked - add integer to atomic64 variable + * @delta: integer value to add + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically adds @delta to @ptr. + */ +void atomic64_add_unchecked(u64 delta, atomic64_unchecked_t *ptr) +{ + atomic64_add_return_unchecked(delta, ptr); +} +EXPORT_SYMBOL(atomic64_add_unchecked); + +/** * atomic64_sub - subtract the atomic64 variable * @delta: integer value to subtract * @ptr: pointer to type atomic64_t @@ -144,6 +253,19 @@ void atomic64_sub(u64 delta, atomic64_t EXPORT_SYMBOL(atomic64_sub); /** + * atomic64_sub_unchecked - subtract the atomic64 variable + * @delta: integer value to subtract + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically subtracts @delta from @ptr. + */ +void atomic64_sub_unchecked(u64 delta, atomic64_unchecked_t *ptr) +{ + atomic64_add_unchecked(-delta, ptr); +} +EXPORT_SYMBOL(atomic64_sub_unchecked); + +/** * atomic64_sub_and_test - subtract value from variable and test result * @delta: integer value to subtract * @ptr: pointer to type atomic64_t @@ -173,6 +295,18 @@ void atomic64_inc(atomic64_t *ptr) EXPORT_SYMBOL(atomic64_inc); /** + * atomic64_inc_unchecked - increment atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically increments @ptr by 1. + */ +void atomic64_inc_unchecked(atomic64_unchecked_t *ptr) +{ + atomic64_add_unchecked(1, ptr); +} +EXPORT_SYMBOL(atomic64_inc_unchecked); + +/** * atomic64_dec - decrement atomic64 variable * @ptr: pointer to type atomic64_t * @@ -185,6 +319,18 @@ void atomic64_dec(atomic64_t *ptr) EXPORT_SYMBOL(atomic64_dec); /** + * atomic64_dec_unchecked - decrement atomic64 variable + * @ptr: pointer to type atomic64_unchecked_t + * + * Atomically decrements @ptr by 1. + */ +void atomic64_dec_unchecked(atomic64_unchecked_t *ptr) +{ + atomic64_sub_unchecked(1, ptr); +} +EXPORT_SYMBOL(atomic64_dec_unchecked); + +/** * atomic64_dec_and_test - decrement and test * @ptr: pointer to type atomic64_t * diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/checksum_32.S linux-2.6.32.59-pax/arch/x86/lib/checksum_32.S --- linux-2.6.32.59/arch/x86/lib/checksum_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/checksum_32.S 2012-03-13 13:15:34.596098019 +0100 @@ -28,7 +28,8 @@ #include #include #include - +#include + /* * computes a partial checksum, e.g. for TCP/UDP fragments */ @@ -304,9 +305,28 @@ unsigned int csum_partial_copy_generic ( #define ARGBASE 16 #define FP 12 - -ENTRY(csum_partial_copy_generic) + +ENTRY(csum_partial_copy_generic_to_user) CFI_STARTPROC + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 + jmp csum_partial_copy_generic +#endif + +ENTRY(csum_partial_copy_generic_from_user) + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 +#endif + +ENTRY(csum_partial_copy_generic) subl $4,%esp CFI_ADJUST_CFA_OFFSET 4 pushl %edi @@ -331,7 +351,7 @@ ENTRY(csum_partial_copy_generic) jmp 4f SRC(1: movw (%esi), %bx ) addl $2, %esi -DST( movw %bx, (%edi) ) +DST( movw %bx, %es:(%edi) ) addl $2, %edi addw %bx, %ax adcl $0, %eax @@ -343,30 +363,30 @@ DST( movw %bx, (%edi) ) SRC(1: movl (%esi), %ebx ) SRC( movl 4(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, (%edi) ) +DST( movl %ebx, %es:(%edi) ) adcl %edx, %eax -DST( movl %edx, 4(%edi) ) +DST( movl %edx, %es:4(%edi) ) SRC( movl 8(%esi), %ebx ) SRC( movl 12(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, 8(%edi) ) +DST( movl %ebx, %es:8(%edi) ) adcl %edx, %eax -DST( movl %edx, 12(%edi) ) +DST( movl %edx, %es:12(%edi) ) SRC( movl 16(%esi), %ebx ) SRC( movl 20(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, 16(%edi) ) +DST( movl %ebx, %es:16(%edi) ) adcl %edx, %eax -DST( movl %edx, 20(%edi) ) +DST( movl %edx, %es:20(%edi) ) SRC( movl 24(%esi), %ebx ) SRC( movl 28(%esi), %edx ) adcl %ebx, %eax -DST( movl %ebx, 24(%edi) ) +DST( movl %ebx, %es:24(%edi) ) adcl %edx, %eax -DST( movl %edx, 28(%edi) ) +DST( movl %edx, %es:28(%edi) ) lea 32(%esi), %esi lea 32(%edi), %edi @@ -380,7 +400,7 @@ DST( movl %edx, 28(%edi) ) shrl $2, %edx # This clears CF SRC(3: movl (%esi), %ebx ) adcl %ebx, %eax -DST( movl %ebx, (%edi) ) +DST( movl %ebx, %es:(%edi) ) lea 4(%esi), %esi lea 4(%edi), %edi dec %edx @@ -392,12 +412,12 @@ DST( movl %ebx, (%edi) ) jb 5f SRC( movw (%esi), %cx ) leal 2(%esi), %esi -DST( movw %cx, (%edi) ) +DST( movw %cx, %es:(%edi) ) leal 2(%edi), %edi je 6f shll $16,%ecx SRC(5: movb (%esi), %cl ) -DST( movb %cl, (%edi) ) +DST( movb %cl, %es:(%edi) ) 6: addl %ecx, %eax adcl $0, %eax 7: @@ -408,7 +428,7 @@ DST( movb %cl, (%edi) ) 6001: movl ARGBASE+20(%esp), %ebx # src_err_ptr - movl $-EFAULT, (%ebx) + movl $-EFAULT, %ss:(%ebx) # zero the complete destination - computing the rest # is too much work @@ -421,11 +441,19 @@ DST( movb %cl, (%edi) ) 6002: movl ARGBASE+24(%esp), %ebx # dst_err_ptr - movl $-EFAULT,(%ebx) + movl $-EFAULT,%ss:(%ebx) jmp 5000b .previous + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 popl %ebx CFI_ADJUST_CFA_OFFSET -4 CFI_RESTORE ebx @@ -439,26 +467,47 @@ DST( movb %cl, (%edi) ) CFI_ADJUST_CFA_OFFSET -4 ret CFI_ENDPROC -ENDPROC(csum_partial_copy_generic) +ENDPROC(csum_partial_copy_generic_to_user) #else /* Version for PentiumII/PPro */ #define ROUND1(x) \ + nop; nop; nop; \ SRC(movl x(%esi), %ebx ) ; \ addl %ebx, %eax ; \ - DST(movl %ebx, x(%edi) ) ; + DST(movl %ebx, %es:x(%edi)) ; #define ROUND(x) \ + nop; nop; nop; \ SRC(movl x(%esi), %ebx ) ; \ adcl %ebx, %eax ; \ - DST(movl %ebx, x(%edi) ) ; + DST(movl %ebx, %es:x(%edi)) ; #define ARGBASE 12 - -ENTRY(csum_partial_copy_generic) + +ENTRY(csum_partial_copy_generic_to_user) CFI_STARTPROC + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 + jmp csum_partial_copy_generic +#endif + +ENTRY(csum_partial_copy_generic_from_user) + +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %gs + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 +#endif + +ENTRY(csum_partial_copy_generic) pushl %ebx CFI_ADJUST_CFA_OFFSET 4 CFI_REL_OFFSET ebx, 0 @@ -482,7 +531,7 @@ ENTRY(csum_partial_copy_generic) subl %ebx, %edi lea -1(%esi),%edx andl $-32,%edx - lea 3f(%ebx,%ebx), %ebx + lea 3f(%ebx,%ebx,2), %ebx testl %esi, %esi jmp *%ebx 1: addl $64,%esi @@ -503,19 +552,19 @@ ENTRY(csum_partial_copy_generic) jb 5f SRC( movw (%esi), %dx ) leal 2(%esi), %esi -DST( movw %dx, (%edi) ) +DST( movw %dx, %es:(%edi) ) leal 2(%edi), %edi je 6f shll $16,%edx 5: SRC( movb (%esi), %dl ) -DST( movb %dl, (%edi) ) +DST( movb %dl, %es:(%edi) ) 6: addl %edx, %eax adcl $0, %eax 7: .section .fixup, "ax" 6001: movl ARGBASE+20(%esp), %ebx # src_err_ptr - movl $-EFAULT, (%ebx) + movl $-EFAULT, %ss:(%ebx) # zero the complete destination (computing the rest is too much work) movl ARGBASE+8(%esp),%edi # dst movl ARGBASE+12(%esp),%ecx # len @@ -523,10 +572,21 @@ DST( movb %dl, (%edi) ) rep; stosb jmp 7b 6002: movl ARGBASE+24(%esp), %ebx # dst_err_ptr - movl $-EFAULT, (%ebx) + movl $-EFAULT, %ss:(%ebx) jmp 7b .previous +#ifdef CONFIG_PAX_MEMORY_UDEREF + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %ds + CFI_ADJUST_CFA_OFFSET -4 + pushl %ss + CFI_ADJUST_CFA_OFFSET 4 + popl %es + CFI_ADJUST_CFA_OFFSET -4 +#endif + popl %esi CFI_ADJUST_CFA_OFFSET -4 CFI_RESTORE esi @@ -538,7 +598,7 @@ DST( movb %dl, (%edi) ) CFI_RESTORE ebx ret CFI_ENDPROC -ENDPROC(csum_partial_copy_generic) +ENDPROC(csum_partial_copy_generic_to_user) #undef ROUND #undef ROUND1 diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/clear_page_64.S linux-2.6.32.59-pax/arch/x86/lib/clear_page_64.S --- linux-2.6.32.59/arch/x86/lib/clear_page_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/clear_page_64.S 2012-03-13 13:15:34.596098019 +0100 @@ -1,5 +1,6 @@ #include #include +#include /* * Zero a page. @@ -10,6 +11,7 @@ ENTRY(clear_page_c) movl $4096/8,%ecx xorl %eax,%eax rep stosq + pax_force_retaddr ret CFI_ENDPROC ENDPROC(clear_page_c) @@ -33,6 +35,7 @@ ENTRY(clear_page) leaq 64(%rdi),%rdi jnz .Lloop nop + pax_force_retaddr ret CFI_ENDPROC .Lclear_page_end: @@ -43,7 +46,7 @@ ENDPROC(clear_page) #include - .section .altinstr_replacement,"ax" + .section .altinstr_replacement,"a" 1: .byte 0xeb /* jmp */ .byte (clear_page_c - clear_page) - (2f - 1b) /* offset */ 2: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/copy_page_64.S linux-2.6.32.59-pax/arch/x86/lib/copy_page_64.S --- linux-2.6.32.59/arch/x86/lib/copy_page_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/copy_page_64.S 2012-03-13 13:15:34.596098019 +0100 @@ -2,12 +2,14 @@ #include #include +#include ALIGN copy_page_c: CFI_STARTPROC movl $4096/8,%ecx rep movsq + pax_force_retaddr ret CFI_ENDPROC ENDPROC(copy_page_c) @@ -38,7 +40,7 @@ ENTRY(copy_page) movq 16 (%rsi), %rdx movq 24 (%rsi), %r8 movq 32 (%rsi), %r9 - movq 40 (%rsi), %r10 + movq 40 (%rsi), %r13 movq 48 (%rsi), %r11 movq 56 (%rsi), %r12 @@ -49,7 +51,7 @@ ENTRY(copy_page) movq %rdx, 16 (%rdi) movq %r8, 24 (%rdi) movq %r9, 32 (%rdi) - movq %r10, 40 (%rdi) + movq %r13, 40 (%rdi) movq %r11, 48 (%rdi) movq %r12, 56 (%rdi) @@ -68,7 +70,7 @@ ENTRY(copy_page) movq 16 (%rsi), %rdx movq 24 (%rsi), %r8 movq 32 (%rsi), %r9 - movq 40 (%rsi), %r10 + movq 40 (%rsi), %r13 movq 48 (%rsi), %r11 movq 56 (%rsi), %r12 @@ -77,7 +79,7 @@ ENTRY(copy_page) movq %rdx, 16 (%rdi) movq %r8, 24 (%rdi) movq %r9, 32 (%rdi) - movq %r10, 40 (%rdi) + movq %r13, 40 (%rdi) movq %r11, 48 (%rdi) movq %r12, 56 (%rdi) @@ -94,6 +96,7 @@ ENTRY(copy_page) CFI_RESTORE r13 addq $3*8,%rsp CFI_ADJUST_CFA_OFFSET -3*8 + pax_force_retaddr ret .Lcopy_page_end: CFI_ENDPROC @@ -104,7 +107,7 @@ ENDPROC(copy_page) #include - .section .altinstr_replacement,"ax" + .section .altinstr_replacement,"a" 1: .byte 0xeb /* jmp */ .byte (copy_page_c - copy_page) - (2f - 1b) /* offset */ 2: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/copy_user_64.S linux-2.6.32.59-pax/arch/x86/lib/copy_user_64.S --- linux-2.6.32.59/arch/x86/lib/copy_user_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/copy_user_64.S 2012-03-13 13:15:34.596098019 +0100 @@ -8,6 +8,7 @@ #include #include +#include #define FIX_ALIGNMENT 1 @@ -15,13 +16,14 @@ #include #include #include +#include .macro ALTERNATIVE_JUMP feature,orig,alt 0: .byte 0xe9 /* 32bit jump */ .long \orig-1f /* by default jump to orig */ 1: - .section .altinstr_replacement,"ax" + .section .altinstr_replacement,"a" 2: .byte 0xe9 /* near jump with 32bit immediate */ .long \alt-1b /* offset */ /* or alternatively to alt */ .previous @@ -64,55 +66,26 @@ #endif .endm -/* Standard copy_to_user with segment limit checking */ -ENTRY(copy_to_user) - CFI_STARTPROC - GET_THREAD_INFO(%rax) - movq %rdi,%rcx - addq %rdx,%rcx - jc bad_to_user - cmpq TI_addr_limit(%rax),%rcx - ja bad_to_user - ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string - CFI_ENDPROC -ENDPROC(copy_to_user) - -/* Standard copy_from_user with segment limit checking */ -ENTRY(copy_from_user) - CFI_STARTPROC - GET_THREAD_INFO(%rax) - movq %rsi,%rcx - addq %rdx,%rcx - jc bad_from_user - cmpq TI_addr_limit(%rax),%rcx - ja bad_from_user - ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string - CFI_ENDPROC -ENDPROC(copy_from_user) - ENTRY(copy_user_generic) CFI_STARTPROC ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string CFI_ENDPROC ENDPROC(copy_user_generic) -ENTRY(__copy_from_user_inatomic) - CFI_STARTPROC - ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string - CFI_ENDPROC -ENDPROC(__copy_from_user_inatomic) - .section .fixup,"ax" /* must zero dest */ ENTRY(bad_from_user) bad_from_user: CFI_STARTPROC + testl %edx,%edx + js bad_to_user movl %edx,%ecx xorl %eax,%eax rep stosb bad_to_user: movl %edx,%eax + pax_force_retaddr ret CFI_ENDPROC ENDPROC(bad_from_user) @@ -142,19 +115,19 @@ ENTRY(copy_user_generic_unrolled) jz 17f 1: movq (%rsi),%r8 2: movq 1*8(%rsi),%r9 -3: movq 2*8(%rsi),%r10 +3: movq 2*8(%rsi),%rax 4: movq 3*8(%rsi),%r11 5: movq %r8,(%rdi) 6: movq %r9,1*8(%rdi) -7: movq %r10,2*8(%rdi) +7: movq %rax,2*8(%rdi) 8: movq %r11,3*8(%rdi) 9: movq 4*8(%rsi),%r8 10: movq 5*8(%rsi),%r9 -11: movq 6*8(%rsi),%r10 +11: movq 6*8(%rsi),%rax 12: movq 7*8(%rsi),%r11 13: movq %r8,4*8(%rdi) 14: movq %r9,5*8(%rdi) -15: movq %r10,6*8(%rdi) +15: movq %rax,6*8(%rdi) 16: movq %r11,7*8(%rdi) leaq 64(%rsi),%rsi leaq 64(%rdi),%rdi @@ -180,6 +153,7 @@ ENTRY(copy_user_generic_unrolled) decl %ecx jnz 21b 23: xor %eax,%eax + pax_force_retaddr ret .section .fixup,"ax" @@ -252,6 +226,7 @@ ENTRY(copy_user_generic_string) 3: rep movsb 4: xorl %eax,%eax + pax_force_retaddr ret .section .fixup,"ax" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/copy_user_nocache_64.S linux-2.6.32.59-pax/arch/x86/lib/copy_user_nocache_64.S --- linux-2.6.32.59/arch/x86/lib/copy_user_nocache_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/copy_user_nocache_64.S 2012-03-13 13:15:34.596098019 +0100 @@ -8,12 +8,14 @@ #include #include +#include #define FIX_ALIGNMENT 1 #include #include #include +#include .macro ALIGN_DESTINATION #ifdef FIX_ALIGNMENT @@ -50,6 +52,15 @@ */ ENTRY(__copy_user_nocache) CFI_STARTPROC + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%rcx + cmp %rcx,%rsi + jae 1f + add %rcx,%rsi +1: +#endif + cmpl $8,%edx jb 20f /* less then 8 bytes, go to byte copy loop */ ALIGN_DESTINATION @@ -59,19 +70,19 @@ ENTRY(__copy_user_nocache) jz 17f 1: movq (%rsi),%r8 2: movq 1*8(%rsi),%r9 -3: movq 2*8(%rsi),%r10 +3: movq 2*8(%rsi),%rax 4: movq 3*8(%rsi),%r11 5: movnti %r8,(%rdi) 6: movnti %r9,1*8(%rdi) -7: movnti %r10,2*8(%rdi) +7: movnti %rax,2*8(%rdi) 8: movnti %r11,3*8(%rdi) 9: movq 4*8(%rsi),%r8 10: movq 5*8(%rsi),%r9 -11: movq 6*8(%rsi),%r10 +11: movq 6*8(%rsi),%rax 12: movq 7*8(%rsi),%r11 13: movnti %r8,4*8(%rdi) 14: movnti %r9,5*8(%rdi) -15: movnti %r10,6*8(%rdi) +15: movnti %rax,6*8(%rdi) 16: movnti %r11,7*8(%rdi) leaq 64(%rsi),%rsi leaq 64(%rdi),%rdi @@ -98,6 +109,7 @@ ENTRY(__copy_user_nocache) jnz 21b 23: xorl %eax,%eax sfence + pax_force_retaddr ret .section .fixup,"ax" diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/csum-copy_64.S linux-2.6.32.59-pax/arch/x86/lib/csum-copy_64.S --- linux-2.6.32.59/arch/x86/lib/csum-copy_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/csum-copy_64.S 2012-03-13 13:15:34.600098018 +0100 @@ -8,6 +8,7 @@ #include #include #include +#include /* * Checksum copy with exception handling. @@ -228,6 +229,7 @@ ENTRY(csum_partial_copy_generic) CFI_RESTORE rbp addq $7*8,%rsp CFI_ADJUST_CFA_OFFSET -7*8 + pax_force_retaddr 0, 1 ret CFI_RESTORE_STATE diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/csum-wrappers_64.c linux-2.6.32.59-pax/arch/x86/lib/csum-wrappers_64.c --- linux-2.6.32.59/arch/x86/lib/csum-wrappers_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/csum-wrappers_64.c 2012-03-13 13:15:34.600098018 +0100 @@ -52,7 +52,13 @@ csum_partial_copy_from_user(const void _ len -= 2; } } - isum = csum_partial_copy_generic((__force const void *)src, + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; +#endif + + isum = csum_partial_copy_generic((const void __force_kernel *)src, dst, len, isum, errp, NULL); if (unlikely(*errp)) goto out_err; @@ -105,7 +111,13 @@ csum_partial_copy_to_user(const void *sr } *errp = 0; - return csum_partial_copy_generic(src, (void __force *)dst, + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)dst < PAX_USER_SHADOW_BASE) + dst += PAX_USER_SHADOW_BASE; +#endif + + return csum_partial_copy_generic(src, (void __force_kernel *)dst, len, isum, NULL, errp); } EXPORT_SYMBOL(csum_partial_copy_to_user); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/getuser.S linux-2.6.32.59-pax/arch/x86/lib/getuser.S --- linux-2.6.32.59/arch/x86/lib/getuser.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/getuser.S 2012-03-13 13:15:34.600098018 +0100 @@ -33,15 +33,38 @@ #include #include #include +#include +#include +#include + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __copyuser_seg gs; +#else +#define __copyuser_seg +#endif .text ENTRY(__get_user_1) CFI_STARTPROC + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user -1: movzb (%_ASM_AX),%edx + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + +#endif + +1: __copyuser_seg movzb (%_ASM_AX),%edx xor %eax,%eax + pax_force_retaddr ret CFI_ENDPROC ENDPROC(__get_user_1) @@ -49,12 +72,26 @@ ENDPROC(__get_user_1) ENTRY(__get_user_2) CFI_STARTPROC add $1,%_ASM_AX + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) jc bad_get_user GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user -2: movzwl -1(%_ASM_AX),%edx + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + +#endif + +2: __copyuser_seg movzwl -1(%_ASM_AX),%edx xor %eax,%eax + pax_force_retaddr ret CFI_ENDPROC ENDPROC(__get_user_2) @@ -62,12 +99,26 @@ ENDPROC(__get_user_2) ENTRY(__get_user_4) CFI_STARTPROC add $3,%_ASM_AX + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) jc bad_get_user GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user -3: mov -3(%_ASM_AX),%edx + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + +#endif + +3: __copyuser_seg mov -3(%_ASM_AX),%edx xor %eax,%eax + pax_force_retaddr ret CFI_ENDPROC ENDPROC(__get_user_4) @@ -80,8 +131,18 @@ ENTRY(__get_user_8) GET_THREAD_INFO(%_ASM_DX) cmp TI_addr_limit(%_ASM_DX),%_ASM_AX jae bad_get_user + +#ifdef CONFIG_PAX_MEMORY_UDEREF + mov $PAX_USER_SHADOW_BASE,%_ASM_DX + cmp %_ASM_DX,%_ASM_AX + jae 1234f + add %_ASM_DX,%_ASM_AX +1234: +#endif + 4: movq -7(%_ASM_AX),%_ASM_DX xor %eax,%eax + pax_force_retaddr ret CFI_ENDPROC ENDPROC(__get_user_8) @@ -91,6 +152,7 @@ bad_get_user: CFI_STARTPROC xor %edx,%edx mov $(-EFAULT),%_ASM_AX + pax_force_retaddr ret CFI_ENDPROC END(bad_get_user) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/iomap_copy_64.S linux-2.6.32.59-pax/arch/x86/lib/iomap_copy_64.S --- linux-2.6.32.59/arch/x86/lib/iomap_copy_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/iomap_copy_64.S 2012-03-13 13:15:34.600098018 +0100 @@ -17,6 +17,7 @@ #include #include +#include /* * override generic version in lib/iomap_copy.c @@ -25,6 +26,7 @@ ENTRY(__iowrite32_copy) CFI_STARTPROC movl %edx,%ecx rep movsd + pax_force_retaddr ret CFI_ENDPROC ENDPROC(__iowrite32_copy) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/memcpy_64.S linux-2.6.32.59-pax/arch/x86/lib/memcpy_64.S --- linux-2.6.32.59/arch/x86/lib/memcpy_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/memcpy_64.S 2012-03-13 13:15:34.600098018 +0100 @@ -4,6 +4,7 @@ #include #include +#include /* * memcpy - Copy a memory block. @@ -34,6 +35,7 @@ memcpy_c: rep movsq movl %edx, %ecx rep movsb + pax_force_retaddr ret CFI_ENDPROC ENDPROC(memcpy_c) @@ -118,6 +120,7 @@ ENTRY(memcpy) jnz .Lloop_1 .Lend: + pax_force_retaddr 0, 1 ret CFI_ENDPROC ENDPROC(memcpy) @@ -128,7 +131,7 @@ ENDPROC(__memcpy) * It is also a lot simpler. Use this when possible: */ - .section .altinstr_replacement, "ax" + .section .altinstr_replacement, "a" 1: .byte 0xeb /* jmp */ .byte (memcpy_c - memcpy) - (2f - 1b) /* offset */ 2: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/memset_64.S linux-2.6.32.59-pax/arch/x86/lib/memset_64.S --- linux-2.6.32.59/arch/x86/lib/memset_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/memset_64.S 2012-03-13 13:15:34.604098018 +0100 @@ -2,6 +2,7 @@ #include #include +#include /* * ISO C memset - set a memory block to a byte value. @@ -28,6 +29,7 @@ memset_c: movl %r8d,%ecx rep stosb movq %r9,%rax + pax_force_retaddr ret CFI_ENDPROC ENDPROC(memset_c) @@ -35,13 +37,13 @@ ENDPROC(memset_c) ENTRY(memset) ENTRY(__memset) CFI_STARTPROC - movq %rdi,%r10 movq %rdx,%r11 /* expand byte value */ movzbl %sil,%ecx movabs $0x0101010101010101,%rax mul %rcx /* with rax, clobbers rdx */ + movq %rdi,%rdx /* align dst */ movl %edi,%r9d @@ -95,7 +97,8 @@ ENTRY(__memset) jnz .Lloop_1 .Lende: - movq %r10,%rax + movq %rdx,%rax + pax_force_retaddr ret CFI_RESTORE_STATE @@ -118,7 +121,7 @@ ENDPROC(__memset) #include - .section .altinstr_replacement,"ax" + .section .altinstr_replacement,"a" 1: .byte 0xeb /* jmp */ .byte (memset_c - memset) - (2f - 1b) /* offset */ 2: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/mmx_32.c linux-2.6.32.59-pax/arch/x86/lib/mmx_32.c --- linux-2.6.32.59/arch/x86/lib/mmx_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/mmx_32.c 2012-03-13 13:15:34.604098018 +0100 @@ -29,6 +29,7 @@ void *_mmx_memcpy(void *to, const void * { void *p; int i; + unsigned long cr0; if (unlikely(in_interrupt())) return __memcpy(to, from, len); @@ -39,44 +40,72 @@ void *_mmx_memcpy(void *to, const void * kernel_fpu_begin(); __asm__ __volatile__ ( - "1: prefetch (%0)\n" /* This set is 28 bytes */ - " prefetch 64(%0)\n" - " prefetch 128(%0)\n" - " prefetch 192(%0)\n" - " prefetch 256(%0)\n" + "1: prefetch (%1)\n" /* This set is 28 bytes */ + " prefetch 64(%1)\n" + " prefetch 128(%1)\n" + " prefetch 192(%1)\n" + " prefetch 256(%1)\n" "2: \n" ".section .fixup, \"ax\"\n" - "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + "3: \n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" _ASM_EXTABLE(1b, 3b) - : : "r" (from)); + : "=&r" (cr0) : "r" (from) : "ax"); for ( ; i > 5; i--) { __asm__ __volatile__ ( - "1: prefetch 320(%0)\n" - "2: movq (%0), %%mm0\n" - " movq 8(%0), %%mm1\n" - " movq 16(%0), %%mm2\n" - " movq 24(%0), %%mm3\n" - " movq %%mm0, (%1)\n" - " movq %%mm1, 8(%1)\n" - " movq %%mm2, 16(%1)\n" - " movq %%mm3, 24(%1)\n" - " movq 32(%0), %%mm0\n" - " movq 40(%0), %%mm1\n" - " movq 48(%0), %%mm2\n" - " movq 56(%0), %%mm3\n" - " movq %%mm0, 32(%1)\n" - " movq %%mm1, 40(%1)\n" - " movq %%mm2, 48(%1)\n" - " movq %%mm3, 56(%1)\n" + "1: prefetch 320(%1)\n" + "2: movq (%1), %%mm0\n" + " movq 8(%1), %%mm1\n" + " movq 16(%1), %%mm2\n" + " movq 24(%1), %%mm3\n" + " movq %%mm0, (%2)\n" + " movq %%mm1, 8(%2)\n" + " movq %%mm2, 16(%2)\n" + " movq %%mm3, 24(%2)\n" + " movq 32(%1), %%mm0\n" + " movq 40(%1), %%mm1\n" + " movq 48(%1), %%mm2\n" + " movq 56(%1), %%mm3\n" + " movq %%mm0, 32(%2)\n" + " movq %%mm1, 40(%2)\n" + " movq %%mm2, 48(%2)\n" + " movq %%mm3, 56(%2)\n" ".section .fixup, \"ax\"\n" - "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + "3:\n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" _ASM_EXTABLE(1b, 3b) - : : "r" (from), "r" (to) : "memory"); + : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); from += 64; to += 64; @@ -158,6 +187,7 @@ static void fast_clear_page(void *page) static void fast_copy_page(void *to, void *from) { int i; + unsigned long cr0; kernel_fpu_begin(); @@ -166,42 +196,70 @@ static void fast_copy_page(void *to, voi * but that is for later. -AV */ __asm__ __volatile__( - "1: prefetch (%0)\n" - " prefetch 64(%0)\n" - " prefetch 128(%0)\n" - " prefetch 192(%0)\n" - " prefetch 256(%0)\n" + "1: prefetch (%1)\n" + " prefetch 64(%1)\n" + " prefetch 128(%1)\n" + " prefetch 192(%1)\n" + " prefetch 256(%1)\n" "2: \n" ".section .fixup, \"ax\"\n" - "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + "3: \n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" - _ASM_EXTABLE(1b, 3b) : : "r" (from)); + _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); for (i = 0; i < (4096-320)/64; i++) { __asm__ __volatile__ ( - "1: prefetch 320(%0)\n" - "2: movq (%0), %%mm0\n" - " movntq %%mm0, (%1)\n" - " movq 8(%0), %%mm1\n" - " movntq %%mm1, 8(%1)\n" - " movq 16(%0), %%mm2\n" - " movntq %%mm2, 16(%1)\n" - " movq 24(%0), %%mm3\n" - " movntq %%mm3, 24(%1)\n" - " movq 32(%0), %%mm4\n" - " movntq %%mm4, 32(%1)\n" - " movq 40(%0), %%mm5\n" - " movntq %%mm5, 40(%1)\n" - " movq 48(%0), %%mm6\n" - " movntq %%mm6, 48(%1)\n" - " movq 56(%0), %%mm7\n" - " movntq %%mm7, 56(%1)\n" + "1: prefetch 320(%1)\n" + "2: movq (%1), %%mm0\n" + " movntq %%mm0, (%2)\n" + " movq 8(%1), %%mm1\n" + " movntq %%mm1, 8(%2)\n" + " movq 16(%1), %%mm2\n" + " movntq %%mm2, 16(%2)\n" + " movq 24(%1), %%mm3\n" + " movntq %%mm3, 24(%2)\n" + " movq 32(%1), %%mm4\n" + " movntq %%mm4, 32(%2)\n" + " movq 40(%1), %%mm5\n" + " movntq %%mm5, 40(%2)\n" + " movq 48(%1), %%mm6\n" + " movntq %%mm6, 48(%2)\n" + " movq 56(%1), %%mm7\n" + " movntq %%mm7, 56(%2)\n" ".section .fixup, \"ax\"\n" - "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + "3:\n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" - _ASM_EXTABLE(1b, 3b) : : "r" (from), "r" (to) : "memory"); + _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); from += 64; to += 64; @@ -280,47 +338,76 @@ static void fast_clear_page(void *page) static void fast_copy_page(void *to, void *from) { int i; + unsigned long cr0; kernel_fpu_begin(); __asm__ __volatile__ ( - "1: prefetch (%0)\n" - " prefetch 64(%0)\n" - " prefetch 128(%0)\n" - " prefetch 192(%0)\n" - " prefetch 256(%0)\n" + "1: prefetch (%1)\n" + " prefetch 64(%1)\n" + " prefetch 128(%1)\n" + " prefetch 192(%1)\n" + " prefetch 256(%1)\n" "2: \n" ".section .fixup, \"ax\"\n" - "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + "3: \n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" - _ASM_EXTABLE(1b, 3b) : : "r" (from)); + _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax"); for (i = 0; i < 4096/64; i++) { __asm__ __volatile__ ( - "1: prefetch 320(%0)\n" - "2: movq (%0), %%mm0\n" - " movq 8(%0), %%mm1\n" - " movq 16(%0), %%mm2\n" - " movq 24(%0), %%mm3\n" - " movq %%mm0, (%1)\n" - " movq %%mm1, 8(%1)\n" - " movq %%mm2, 16(%1)\n" - " movq %%mm3, 24(%1)\n" - " movq 32(%0), %%mm0\n" - " movq 40(%0), %%mm1\n" - " movq 48(%0), %%mm2\n" - " movq 56(%0), %%mm3\n" - " movq %%mm0, 32(%1)\n" - " movq %%mm1, 40(%1)\n" - " movq %%mm2, 48(%1)\n" - " movq %%mm3, 56(%1)\n" + "1: prefetch 320(%1)\n" + "2: movq (%1), %%mm0\n" + " movq 8(%1), %%mm1\n" + " movq 16(%1), %%mm2\n" + " movq 24(%1), %%mm3\n" + " movq %%mm0, (%2)\n" + " movq %%mm1, 8(%2)\n" + " movq %%mm2, 16(%2)\n" + " movq %%mm3, 24(%2)\n" + " movq 32(%1), %%mm0\n" + " movq 40(%1), %%mm1\n" + " movq 48(%1), %%mm2\n" + " movq 56(%1), %%mm3\n" + " movq %%mm0, 32(%2)\n" + " movq %%mm1, 40(%2)\n" + " movq %%mm2, 48(%2)\n" + " movq %%mm3, 56(%2)\n" ".section .fixup, \"ax\"\n" - "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + "3:\n" + +#ifdef CONFIG_PAX_KERNEXEC + " movl %%cr0, %0\n" + " movl %0, %%eax\n" + " andl $0xFFFEFFFF, %%eax\n" + " movl %%eax, %%cr0\n" +#endif + + " movw $0x05EB, 1b\n" /* jmp on 5 bytes */ + +#ifdef CONFIG_PAX_KERNEXEC + " movl %0, %%cr0\n" +#endif + " jmp 2b\n" ".previous\n" _ASM_EXTABLE(1b, 3b) - : : "r" (from), "r" (to) : "memory"); + : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax"); from += 64; to += 64; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/msr-reg.S linux-2.6.32.59-pax/arch/x86/lib/msr-reg.S --- linux-2.6.32.59/arch/x86/lib/msr-reg.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/msr-reg.S 2012-03-13 13:15:34.604098018 +0100 @@ -3,6 +3,7 @@ #include #include #include +#include #ifdef CONFIG_X86_64 /* @@ -16,7 +17,7 @@ ENTRY(native_\op\()_safe_regs) CFI_STARTPROC pushq_cfi %rbx pushq_cfi %rbp - movq %rdi, %r10 /* Save pointer */ + movq %rdi, %r9 /* Save pointer */ xorl %r11d, %r11d /* Return value */ movl (%rdi), %eax movl 4(%rdi), %ecx @@ -27,16 +28,17 @@ ENTRY(native_\op\()_safe_regs) movl 28(%rdi), %edi CFI_REMEMBER_STATE 1: \op -2: movl %eax, (%r10) +2: movl %eax, (%r9) movl %r11d, %eax /* Return value */ - movl %ecx, 4(%r10) - movl %edx, 8(%r10) - movl %ebx, 12(%r10) - movl %ebp, 20(%r10) - movl %esi, 24(%r10) - movl %edi, 28(%r10) + movl %ecx, 4(%r9) + movl %edx, 8(%r9) + movl %ebx, 12(%r9) + movl %ebp, 20(%r9) + movl %esi, 24(%r9) + movl %edi, 28(%r9) popq_cfi %rbp popq_cfi %rbx + pax_force_retaddr ret 3: CFI_RESTORE_STATE diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/putuser.S linux-2.6.32.59-pax/arch/x86/lib/putuser.S --- linux-2.6.32.59/arch/x86/lib/putuser.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/putuser.S 2012-03-13 13:15:34.604098018 +0100 @@ -15,7 +15,9 @@ #include #include #include - +#include +#include +#include /* * __put_user_X @@ -29,52 +31,119 @@ * as they get called from within inline assembly. */ -#define ENTER CFI_STARTPROC ; \ - GET_THREAD_INFO(%_ASM_BX) -#define EXIT ret ; \ +#define ENTER CFI_STARTPROC +#define EXIT pax_force_retaddr; ret ; \ CFI_ENDPROC +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define _DEST %_ASM_CX,%_ASM_BX +#else +#define _DEST %_ASM_CX +#endif + +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF) +#define __copyuser_seg gs; +#else +#define __copyuser_seg +#endif + .text ENTRY(__put_user_1) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) cmp TI_addr_limit(%_ASM_BX),%_ASM_CX jae bad_put_user -1: movb %al,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +1: __copyuser_seg movb %al,(_DEST) xor %eax,%eax EXIT ENDPROC(__put_user_1) ENTRY(__put_user_2) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) mov TI_addr_limit(%_ASM_BX),%_ASM_BX sub $1,%_ASM_BX cmp %_ASM_BX,%_ASM_CX jae bad_put_user -2: movw %ax,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +2: __copyuser_seg movw %ax,(_DEST) xor %eax,%eax EXIT ENDPROC(__put_user_2) ENTRY(__put_user_4) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) mov TI_addr_limit(%_ASM_BX),%_ASM_BX sub $3,%_ASM_BX cmp %_ASM_BX,%_ASM_CX jae bad_put_user -3: movl %eax,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +3: __copyuser_seg movl %eax,(_DEST) xor %eax,%eax EXIT ENDPROC(__put_user_4) ENTRY(__put_user_8) ENTER + +#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF) + GET_THREAD_INFO(%_ASM_BX) mov TI_addr_limit(%_ASM_BX),%_ASM_BX sub $7,%_ASM_BX cmp %_ASM_BX,%_ASM_CX jae bad_put_user -4: mov %_ASM_AX,(%_ASM_CX) + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + mov $PAX_USER_SHADOW_BASE,%_ASM_BX + cmp %_ASM_BX,%_ASM_CX + jb 1234f + xor %ebx,%ebx +1234: +#endif + +#endif + +4: __copyuser_seg mov %_ASM_AX,(_DEST) #ifdef CONFIG_X86_32 -5: movl %edx,4(%_ASM_CX) +5: __copyuser_seg movl %edx,4(_DEST) #endif xor %eax,%eax EXIT diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/rwlock_64.S linux-2.6.32.59-pax/arch/x86/lib/rwlock_64.S --- linux-2.6.32.59/arch/x86/lib/rwlock_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/rwlock_64.S 2012-03-13 13:15:34.604098018 +0100 @@ -2,6 +2,7 @@ #include #include +#include #include #include @@ -10,13 +11,34 @@ ENTRY(__write_lock_failed) CFI_STARTPROC LOCK_PREFIX addl $RW_LOCK_BIAS,(%rdi) + +#ifdef CONFIG_PAX_REFCOUNT + jno 1234f + LOCK_PREFIX + subl $RW_LOCK_BIAS,(%rdi) + int $4 +1234: + _ASM_EXTABLE(1234b, 1234b) +#endif + 1: rep nop cmpl $RW_LOCK_BIAS,(%rdi) jne 1b LOCK_PREFIX subl $RW_LOCK_BIAS,(%rdi) + +#ifdef CONFIG_PAX_REFCOUNT + jno 1234f + LOCK_PREFIX + addl $RW_LOCK_BIAS,(%rdi) + int $4 +1234: + _ASM_EXTABLE(1234b, 1234b) +#endif + jnz __write_lock_failed + pax_force_retaddr ret CFI_ENDPROC END(__write_lock_failed) @@ -26,13 +48,34 @@ ENTRY(__read_lock_failed) CFI_STARTPROC LOCK_PREFIX incl (%rdi) + +#ifdef CONFIG_PAX_REFCOUNT + jno 1234f + LOCK_PREFIX + decl (%rdi) + int $4 +1234: + _ASM_EXTABLE(1234b, 1234b) +#endif + 1: rep nop cmpl $1,(%rdi) js 1b LOCK_PREFIX decl (%rdi) + +#ifdef CONFIG_PAX_REFCOUNT + jno 1234f + LOCK_PREFIX + incl (%rdi) + int $4 +1234: + _ASM_EXTABLE(1234b, 1234b) +#endif + js __read_lock_failed + pax_force_retaddr ret CFI_ENDPROC END(__read_lock_failed) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/rwsem_64.S linux-2.6.32.59-pax/arch/x86/lib/rwsem_64.S --- linux-2.6.32.59/arch/x86/lib/rwsem_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/rwsem_64.S 2012-03-13 13:15:34.608098018 +0100 @@ -48,6 +48,7 @@ ENTRY(call_rwsem_down_read_failed) call rwsem_down_read_failed popq %rdx restore_common_regs + pax_force_retaddr ret ENDPROC(call_rwsem_down_read_failed) @@ -56,6 +57,7 @@ ENTRY(call_rwsem_down_write_failed) movq %rax,%rdi call rwsem_down_write_failed restore_common_regs + pax_force_retaddr ret ENDPROC(call_rwsem_down_write_failed) @@ -66,7 +68,8 @@ ENTRY(call_rwsem_wake) movq %rax,%rdi call rwsem_wake restore_common_regs -1: ret +1: pax_force_retaddr + ret ENDPROC(call_rwsem_wake) /* Fix up special calling conventions */ @@ -77,5 +80,6 @@ ENTRY(call_rwsem_downgrade_wake) call rwsem_downgrade_wake popq %rdx restore_common_regs + pax_force_retaddr ret ENDPROC(call_rwsem_downgrade_wake) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/thunk_64.S linux-2.6.32.59-pax/arch/x86/lib/thunk_64.S --- linux-2.6.32.59/arch/x86/lib/thunk_64.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/thunk_64.S 2012-03-13 13:15:34.608098018 +0100 @@ -10,7 +10,8 @@ #include #include #include - + #include + /* rdi: arg1 ... normal C conventions. rax is saved/restored. */ .macro thunk name,func .globl \name @@ -70,6 +71,7 @@ SAVE_ARGS restore: RESTORE_ARGS + pax_force_retaddr ret CFI_ENDPROC @@ -77,5 +79,6 @@ restore: SAVE_ARGS restore_norax: RESTORE_ARGS 1 + pax_force_retaddr ret CFI_ENDPROC diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/usercopy_32.c linux-2.6.32.59-pax/arch/x86/lib/usercopy_32.c --- linux-2.6.32.59/arch/x86/lib/usercopy_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/usercopy_32.c 2012-08-12 13:34:04.529244144 +0200 @@ -43,7 +43,7 @@ do { \ __asm__ __volatile__( \ " testl %1,%1\n" \ " jz 2f\n" \ - "0: lodsb\n" \ + "0: "__copyuser_seg"lodsb\n" \ " stosb\n" \ " testb %%al,%%al\n" \ " jz 1f\n" \ @@ -128,10 +128,12 @@ do { \ int __d0; \ might_fault(); \ __asm__ __volatile__( \ + __COPYUSER_SET_ES \ "0: rep; stosl\n" \ " movl %2,%0\n" \ "1: rep; stosb\n" \ "2:\n" \ + __COPYUSER_RESTORE_ES \ ".section .fixup,\"ax\"\n" \ "3: lea 0(%2,%0,4),%0\n" \ " jmp 2b\n" \ @@ -200,6 +202,7 @@ long strnlen_user(const char __user *s, might_fault(); __asm__ __volatile__( + __COPYUSER_SET_ES " testl %0, %0\n" " jz 3f\n" " andl %0,%%ecx\n" @@ -208,6 +211,7 @@ long strnlen_user(const char __user *s, " subl %%ecx,%0\n" " addl %0,%%eax\n" "1:\n" + __COPYUSER_RESTORE_ES ".section .fixup,\"ax\"\n" "2: xorl %%eax,%%eax\n" " jmp 1b\n" @@ -227,7 +231,7 @@ EXPORT_SYMBOL(strnlen_user); #ifdef CONFIG_X86_INTEL_USERCOPY static unsigned long -__copy_user_intel(void __user *to, const void *from, unsigned long size) +__generic_copy_to_user_intel(void __user *to, const void *from, unsigned long size) { int d0, d1; __asm__ __volatile__( @@ -239,36 +243,36 @@ __copy_user_intel(void __user *to, const " .align 2,0x90\n" "3: movl 0(%4), %%eax\n" "4: movl 4(%4), %%edx\n" - "5: movl %%eax, 0(%3)\n" - "6: movl %%edx, 4(%3)\n" + "5: "__copyuser_seg" movl %%eax, 0(%3)\n" + "6: "__copyuser_seg" movl %%edx, 4(%3)\n" "7: movl 8(%4), %%eax\n" "8: movl 12(%4),%%edx\n" - "9: movl %%eax, 8(%3)\n" - "10: movl %%edx, 12(%3)\n" + "9: "__copyuser_seg" movl %%eax, 8(%3)\n" + "10: "__copyuser_seg" movl %%edx, 12(%3)\n" "11: movl 16(%4), %%eax\n" "12: movl 20(%4), %%edx\n" - "13: movl %%eax, 16(%3)\n" - "14: movl %%edx, 20(%3)\n" + "13: "__copyuser_seg" movl %%eax, 16(%3)\n" + "14: "__copyuser_seg" movl %%edx, 20(%3)\n" "15: movl 24(%4), %%eax\n" "16: movl 28(%4), %%edx\n" - "17: movl %%eax, 24(%3)\n" - "18: movl %%edx, 28(%3)\n" + "17: "__copyuser_seg" movl %%eax, 24(%3)\n" + "18: "__copyuser_seg" movl %%edx, 28(%3)\n" "19: movl 32(%4), %%eax\n" "20: movl 36(%4), %%edx\n" - "21: movl %%eax, 32(%3)\n" - "22: movl %%edx, 36(%3)\n" + "21: "__copyuser_seg" movl %%eax, 32(%3)\n" + "22: "__copyuser_seg" movl %%edx, 36(%3)\n" "23: movl 40(%4), %%eax\n" "24: movl 44(%4), %%edx\n" - "25: movl %%eax, 40(%3)\n" - "26: movl %%edx, 44(%3)\n" + "25: "__copyuser_seg" movl %%eax, 40(%3)\n" + "26: "__copyuser_seg" movl %%edx, 44(%3)\n" "27: movl 48(%4), %%eax\n" "28: movl 52(%4), %%edx\n" - "29: movl %%eax, 48(%3)\n" - "30: movl %%edx, 52(%3)\n" + "29: "__copyuser_seg" movl %%eax, 48(%3)\n" + "30: "__copyuser_seg" movl %%edx, 52(%3)\n" "31: movl 56(%4), %%eax\n" "32: movl 60(%4), %%edx\n" - "33: movl %%eax, 56(%3)\n" - "34: movl %%edx, 60(%3)\n" + "33: "__copyuser_seg" movl %%eax, 56(%3)\n" + "34: "__copyuser_seg" movl %%edx, 60(%3)\n" " addl $-64, %0\n" " addl $64, %4\n" " addl $64, %3\n" @@ -278,10 +282,12 @@ __copy_user_intel(void __user *to, const " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" + __COPYUSER_SET_ES "99: rep; movsl\n" "36: movl %%eax, %0\n" "37: rep; movsb\n" "100:\n" + __COPYUSER_RESTORE_ES ".section .fixup,\"ax\"\n" "101: lea 0(%%eax,%0,4),%0\n" " jmp 100b\n" @@ -334,46 +340,153 @@ __copy_user_intel(void __user *to, const } static unsigned long +__generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size) +{ + int d0, d1; + __asm__ __volatile__( + " .align 2,0x90\n" + "1: "__copyuser_seg" movl 32(%4), %%eax\n" + " cmpl $67, %0\n" + " jbe 3f\n" + "2: "__copyuser_seg" movl 64(%4), %%eax\n" + " .align 2,0x90\n" + "3: "__copyuser_seg" movl 0(%4), %%eax\n" + "4: "__copyuser_seg" movl 4(%4), %%edx\n" + "5: movl %%eax, 0(%3)\n" + "6: movl %%edx, 4(%3)\n" + "7: "__copyuser_seg" movl 8(%4), %%eax\n" + "8: "__copyuser_seg" movl 12(%4),%%edx\n" + "9: movl %%eax, 8(%3)\n" + "10: movl %%edx, 12(%3)\n" + "11: "__copyuser_seg" movl 16(%4), %%eax\n" + "12: "__copyuser_seg" movl 20(%4), %%edx\n" + "13: movl %%eax, 16(%3)\n" + "14: movl %%edx, 20(%3)\n" + "15: "__copyuser_seg" movl 24(%4), %%eax\n" + "16: "__copyuser_seg" movl 28(%4), %%edx\n" + "17: movl %%eax, 24(%3)\n" + "18: movl %%edx, 28(%3)\n" + "19: "__copyuser_seg" movl 32(%4), %%eax\n" + "20: "__copyuser_seg" movl 36(%4), %%edx\n" + "21: movl %%eax, 32(%3)\n" + "22: movl %%edx, 36(%3)\n" + "23: "__copyuser_seg" movl 40(%4), %%eax\n" + "24: "__copyuser_seg" movl 44(%4), %%edx\n" + "25: movl %%eax, 40(%3)\n" + "26: movl %%edx, 44(%3)\n" + "27: "__copyuser_seg" movl 48(%4), %%eax\n" + "28: "__copyuser_seg" movl 52(%4), %%edx\n" + "29: movl %%eax, 48(%3)\n" + "30: movl %%edx, 52(%3)\n" + "31: "__copyuser_seg" movl 56(%4), %%eax\n" + "32: "__copyuser_seg" movl 60(%4), %%edx\n" + "33: movl %%eax, 56(%3)\n" + "34: movl %%edx, 60(%3)\n" + " addl $-64, %0\n" + " addl $64, %4\n" + " addl $64, %3\n" + " cmpl $63, %0\n" + " ja 1b\n" + "35: movl %0, %%eax\n" + " shrl $2, %0\n" + " andl $3, %%eax\n" + " cld\n" + "99: rep; "__copyuser_seg" movsl\n" + "36: movl %%eax, %0\n" + "37: rep; "__copyuser_seg" movsb\n" + "100:\n" + ".section .fixup,\"ax\"\n" + "101: lea 0(%%eax,%0,4),%0\n" + " jmp 100b\n" + ".previous\n" + ".section __ex_table,\"a\"\n" + " .align 4\n" + " .long 1b,100b\n" + " .long 2b,100b\n" + " .long 3b,100b\n" + " .long 4b,100b\n" + " .long 5b,100b\n" + " .long 6b,100b\n" + " .long 7b,100b\n" + " .long 8b,100b\n" + " .long 9b,100b\n" + " .long 10b,100b\n" + " .long 11b,100b\n" + " .long 12b,100b\n" + " .long 13b,100b\n" + " .long 14b,100b\n" + " .long 15b,100b\n" + " .long 16b,100b\n" + " .long 17b,100b\n" + " .long 18b,100b\n" + " .long 19b,100b\n" + " .long 20b,100b\n" + " .long 21b,100b\n" + " .long 22b,100b\n" + " .long 23b,100b\n" + " .long 24b,100b\n" + " .long 25b,100b\n" + " .long 26b,100b\n" + " .long 27b,100b\n" + " .long 28b,100b\n" + " .long 29b,100b\n" + " .long 30b,100b\n" + " .long 31b,100b\n" + " .long 32b,100b\n" + " .long 33b,100b\n" + " .long 34b,100b\n" + " .long 35b,100b\n" + " .long 36b,100b\n" + " .long 37b,100b\n" + " .long 99b,101b\n" + ".previous" + : "=&c"(size), "=&D" (d0), "=&S" (d1) + : "1"(to), "2"(from), "0"(size) + : "eax", "edx", "memory"); + return size; +} + +static unsigned long __size_overflow(3) __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size) { int d0, d1; __asm__ __volatile__( " .align 2,0x90\n" - "0: movl 32(%4), %%eax\n" + "0: "__copyuser_seg" movl 32(%4), %%eax\n" " cmpl $67, %0\n" " jbe 2f\n" - "1: movl 64(%4), %%eax\n" + "1: "__copyuser_seg" movl 64(%4), %%eax\n" " .align 2,0x90\n" - "2: movl 0(%4), %%eax\n" - "21: movl 4(%4), %%edx\n" + "2: "__copyuser_seg" movl 0(%4), %%eax\n" + "21: "__copyuser_seg" movl 4(%4), %%edx\n" " movl %%eax, 0(%3)\n" " movl %%edx, 4(%3)\n" - "3: movl 8(%4), %%eax\n" - "31: movl 12(%4),%%edx\n" + "3: "__copyuser_seg" movl 8(%4), %%eax\n" + "31: "__copyuser_seg" movl 12(%4),%%edx\n" " movl %%eax, 8(%3)\n" " movl %%edx, 12(%3)\n" - "4: movl 16(%4), %%eax\n" - "41: movl 20(%4), %%edx\n" + "4: "__copyuser_seg" movl 16(%4), %%eax\n" + "41: "__copyuser_seg" movl 20(%4), %%edx\n" " movl %%eax, 16(%3)\n" " movl %%edx, 20(%3)\n" - "10: movl 24(%4), %%eax\n" - "51: movl 28(%4), %%edx\n" + "10: "__copyuser_seg" movl 24(%4), %%eax\n" + "51: "__copyuser_seg" movl 28(%4), %%edx\n" " movl %%eax, 24(%3)\n" " movl %%edx, 28(%3)\n" - "11: movl 32(%4), %%eax\n" - "61: movl 36(%4), %%edx\n" + "11: "__copyuser_seg" movl 32(%4), %%eax\n" + "61: "__copyuser_seg" movl 36(%4), %%edx\n" " movl %%eax, 32(%3)\n" " movl %%edx, 36(%3)\n" - "12: movl 40(%4), %%eax\n" - "71: movl 44(%4), %%edx\n" + "12: "__copyuser_seg" movl 40(%4), %%eax\n" + "71: "__copyuser_seg" movl 44(%4), %%edx\n" " movl %%eax, 40(%3)\n" " movl %%edx, 44(%3)\n" - "13: movl 48(%4), %%eax\n" - "81: movl 52(%4), %%edx\n" + "13: "__copyuser_seg" movl 48(%4), %%eax\n" + "81: "__copyuser_seg" movl 52(%4), %%edx\n" " movl %%eax, 48(%3)\n" " movl %%edx, 52(%3)\n" - "14: movl 56(%4), %%eax\n" - "91: movl 60(%4), %%edx\n" + "14: "__copyuser_seg" movl 56(%4), %%eax\n" + "91: "__copyuser_seg" movl 60(%4), %%edx\n" " movl %%eax, 56(%3)\n" " movl %%edx, 60(%3)\n" " addl $-64, %0\n" @@ -385,9 +498,9 @@ __copy_user_zeroing_intel(void *to, cons " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" - "6: rep; movsl\n" + "6: rep; "__copyuser_seg" movsl\n" " movl %%eax,%0\n" - "7: rep; movsb\n" + "7: rep; "__copyuser_seg" movsb\n" "8:\n" ".section .fixup,\"ax\"\n" "9: lea 0(%%eax,%0,4),%0\n" @@ -433,48 +546,48 @@ __copy_user_zeroing_intel(void *to, cons * hyoshiok@miraclelinux.com */ -static unsigned long __copy_user_zeroing_intel_nocache(void *to, +static unsigned long __size_overflow(3) __copy_user_zeroing_intel_nocache(void *to, const void __user *from, unsigned long size) { int d0, d1; __asm__ __volatile__( " .align 2,0x90\n" - "0: movl 32(%4), %%eax\n" + "0: "__copyuser_seg" movl 32(%4), %%eax\n" " cmpl $67, %0\n" " jbe 2f\n" - "1: movl 64(%4), %%eax\n" + "1: "__copyuser_seg" movl 64(%4), %%eax\n" " .align 2,0x90\n" - "2: movl 0(%4), %%eax\n" - "21: movl 4(%4), %%edx\n" + "2: "__copyuser_seg" movl 0(%4), %%eax\n" + "21: "__copyuser_seg" movl 4(%4), %%edx\n" " movnti %%eax, 0(%3)\n" " movnti %%edx, 4(%3)\n" - "3: movl 8(%4), %%eax\n" - "31: movl 12(%4),%%edx\n" + "3: "__copyuser_seg" movl 8(%4), %%eax\n" + "31: "__copyuser_seg" movl 12(%4),%%edx\n" " movnti %%eax, 8(%3)\n" " movnti %%edx, 12(%3)\n" - "4: movl 16(%4), %%eax\n" - "41: movl 20(%4), %%edx\n" + "4: "__copyuser_seg" movl 16(%4), %%eax\n" + "41: "__copyuser_seg" movl 20(%4), %%edx\n" " movnti %%eax, 16(%3)\n" " movnti %%edx, 20(%3)\n" - "10: movl 24(%4), %%eax\n" - "51: movl 28(%4), %%edx\n" + "10: "__copyuser_seg" movl 24(%4), %%eax\n" + "51: "__copyuser_seg" movl 28(%4), %%edx\n" " movnti %%eax, 24(%3)\n" " movnti %%edx, 28(%3)\n" - "11: movl 32(%4), %%eax\n" - "61: movl 36(%4), %%edx\n" + "11: "__copyuser_seg" movl 32(%4), %%eax\n" + "61: "__copyuser_seg" movl 36(%4), %%edx\n" " movnti %%eax, 32(%3)\n" " movnti %%edx, 36(%3)\n" - "12: movl 40(%4), %%eax\n" - "71: movl 44(%4), %%edx\n" + "12: "__copyuser_seg" movl 40(%4), %%eax\n" + "71: "__copyuser_seg" movl 44(%4), %%edx\n" " movnti %%eax, 40(%3)\n" " movnti %%edx, 44(%3)\n" - "13: movl 48(%4), %%eax\n" - "81: movl 52(%4), %%edx\n" + "13: "__copyuser_seg" movl 48(%4), %%eax\n" + "81: "__copyuser_seg" movl 52(%4), %%edx\n" " movnti %%eax, 48(%3)\n" " movnti %%edx, 52(%3)\n" - "14: movl 56(%4), %%eax\n" - "91: movl 60(%4), %%edx\n" + "14: "__copyuser_seg" movl 56(%4), %%eax\n" + "91: "__copyuser_seg" movl 60(%4), %%edx\n" " movnti %%eax, 56(%3)\n" " movnti %%edx, 60(%3)\n" " addl $-64, %0\n" @@ -487,9 +600,9 @@ static unsigned long __copy_user_zeroing " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" - "6: rep; movsl\n" + "6: rep; "__copyuser_seg" movsl\n" " movl %%eax,%0\n" - "7: rep; movsb\n" + "7: rep; "__copyuser_seg" movsb\n" "8:\n" ".section .fixup,\"ax\"\n" "9: lea 0(%%eax,%0,4),%0\n" @@ -530,48 +643,48 @@ static unsigned long __copy_user_zeroing return size; } -static unsigned long __copy_user_intel_nocache(void *to, +static unsigned long __size_overflow(3) __copy_user_intel_nocache(void *to, const void __user *from, unsigned long size) { int d0, d1; __asm__ __volatile__( " .align 2,0x90\n" - "0: movl 32(%4), %%eax\n" + "0: "__copyuser_seg" movl 32(%4), %%eax\n" " cmpl $67, %0\n" " jbe 2f\n" - "1: movl 64(%4), %%eax\n" + "1: "__copyuser_seg" movl 64(%4), %%eax\n" " .align 2,0x90\n" - "2: movl 0(%4), %%eax\n" - "21: movl 4(%4), %%edx\n" + "2: "__copyuser_seg" movl 0(%4), %%eax\n" + "21: "__copyuser_seg" movl 4(%4), %%edx\n" " movnti %%eax, 0(%3)\n" " movnti %%edx, 4(%3)\n" - "3: movl 8(%4), %%eax\n" - "31: movl 12(%4),%%edx\n" + "3: "__copyuser_seg" movl 8(%4), %%eax\n" + "31: "__copyuser_seg" movl 12(%4),%%edx\n" " movnti %%eax, 8(%3)\n" " movnti %%edx, 12(%3)\n" - "4: movl 16(%4), %%eax\n" - "41: movl 20(%4), %%edx\n" + "4: "__copyuser_seg" movl 16(%4), %%eax\n" + "41: "__copyuser_seg" movl 20(%4), %%edx\n" " movnti %%eax, 16(%3)\n" " movnti %%edx, 20(%3)\n" - "10: movl 24(%4), %%eax\n" - "51: movl 28(%4), %%edx\n" + "10: "__copyuser_seg" movl 24(%4), %%eax\n" + "51: "__copyuser_seg" movl 28(%4), %%edx\n" " movnti %%eax, 24(%3)\n" " movnti %%edx, 28(%3)\n" - "11: movl 32(%4), %%eax\n" - "61: movl 36(%4), %%edx\n" + "11: "__copyuser_seg" movl 32(%4), %%eax\n" + "61: "__copyuser_seg" movl 36(%4), %%edx\n" " movnti %%eax, 32(%3)\n" " movnti %%edx, 36(%3)\n" - "12: movl 40(%4), %%eax\n" - "71: movl 44(%4), %%edx\n" + "12: "__copyuser_seg" movl 40(%4), %%eax\n" + "71: "__copyuser_seg" movl 44(%4), %%edx\n" " movnti %%eax, 40(%3)\n" " movnti %%edx, 44(%3)\n" - "13: movl 48(%4), %%eax\n" - "81: movl 52(%4), %%edx\n" + "13: "__copyuser_seg" movl 48(%4), %%eax\n" + "81: "__copyuser_seg" movl 52(%4), %%edx\n" " movnti %%eax, 48(%3)\n" " movnti %%edx, 52(%3)\n" - "14: movl 56(%4), %%eax\n" - "91: movl 60(%4), %%edx\n" + "14: "__copyuser_seg" movl 56(%4), %%eax\n" + "91: "__copyuser_seg" movl 60(%4), %%edx\n" " movnti %%eax, 56(%3)\n" " movnti %%edx, 60(%3)\n" " addl $-64, %0\n" @@ -584,9 +697,9 @@ static unsigned long __copy_user_intel_n " shrl $2, %0\n" " andl $3, %%eax\n" " cld\n" - "6: rep; movsl\n" + "6: rep; "__copyuser_seg" movsl\n" " movl %%eax,%0\n" - "7: rep; movsb\n" + "7: rep; "__copyuser_seg" movsb\n" "8:\n" ".section .fixup,\"ax\"\n" "9: lea 0(%%eax,%0,4),%0\n" @@ -629,32 +742,36 @@ static unsigned long __copy_user_intel_n */ unsigned long __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size); -unsigned long __copy_user_intel(void __user *to, const void *from, +unsigned long __generic_copy_to_user_intel(void __user *to, const void *from, + unsigned long size); +unsigned long __generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size); unsigned long __copy_user_zeroing_intel_nocache(void *to, const void __user *from, unsigned long size); #endif /* CONFIG_X86_INTEL_USERCOPY */ /* Generic arbitrary sized copy. */ -#define __copy_user(to, from, size) \ +#define __copy_user(to, from, size, prefix, set, restore) \ do { \ int __d0, __d1, __d2; \ __asm__ __volatile__( \ + set \ " cmp $7,%0\n" \ " jbe 1f\n" \ " movl %1,%0\n" \ " negl %0\n" \ " andl $7,%0\n" \ " subl %0,%3\n" \ - "4: rep; movsb\n" \ + "4: rep; "prefix"movsb\n" \ " movl %3,%0\n" \ " shrl $2,%0\n" \ " andl $3,%3\n" \ " .align 2,0x90\n" \ - "0: rep; movsl\n" \ + "0: rep; "prefix"movsl\n" \ " movl %3,%0\n" \ - "1: rep; movsb\n" \ + "1: rep; "prefix"movsb\n" \ "2:\n" \ + restore \ ".section .fixup,\"ax\"\n" \ "5: addl %3,%0\n" \ " jmp 2b\n" \ @@ -682,14 +799,14 @@ do { \ " negl %0\n" \ " andl $7,%0\n" \ " subl %0,%3\n" \ - "4: rep; movsb\n" \ + "4: rep; "__copyuser_seg"movsb\n" \ " movl %3,%0\n" \ " shrl $2,%0\n" \ " andl $3,%3\n" \ " .align 2,0x90\n" \ - "0: rep; movsl\n" \ + "0: rep; "__copyuser_seg"movsl\n" \ " movl %3,%0\n" \ - "1: rep; movsb\n" \ + "1: rep; "__copyuser_seg"movsb\n" \ "2:\n" \ ".section .fixup,\"ax\"\n" \ "5: addl %3,%0\n" \ @@ -775,9 +892,9 @@ survive: } #endif if (movsl_is_ok(to, from, n)) - __copy_user(to, from, n); + __copy_user(to, from, n, "", __COPYUSER_SET_ES, __COPYUSER_RESTORE_ES); else - n = __copy_user_intel(to, from, n); + n = __generic_copy_to_user_intel(to, from, n); return n; } EXPORT_SYMBOL(__copy_to_user_ll); @@ -797,10 +914,9 @@ unsigned long __copy_from_user_ll_nozero unsigned long n) { if (movsl_is_ok(to, from, n)) - __copy_user(to, from, n); + __copy_user(to, from, n, __copyuser_seg, "", ""); else - n = __copy_user_intel((void __user *)to, - (const void *)from, n); + n = __generic_copy_from_user_intel(to, from, n); return n; } EXPORT_SYMBOL(__copy_from_user_ll_nozero); @@ -827,59 +943,50 @@ unsigned long __copy_from_user_ll_nocach if (n > 64 && cpu_has_xmm2) n = __copy_user_intel_nocache(to, from, n); else - __copy_user(to, from, n); + __copy_user(to, from, n, __copyuser_seg, "", ""); #else - __copy_user(to, from, n); + __copy_user(to, from, n, __copyuser_seg, "", ""); #endif return n; } EXPORT_SYMBOL(__copy_from_user_ll_nocache_nozero); -/** - * copy_to_user: - Copy a block of data into user space. - * @to: Destination address, in user space. - * @from: Source address, in kernel space. - * @n: Number of bytes to copy. - * - * Context: User context only. This function may sleep. - * - * Copy data from kernel space to user space. - * - * Returns number of bytes that could not be copied. - * On success, this will be zero. - */ -unsigned long -copy_to_user(void __user *to, const void *from, unsigned long n) +void copy_from_user_overflow(void) { - if (access_ok(VERIFY_WRITE, to, n)) - n = __copy_to_user(to, from, n); - return n; + WARN(1, "Buffer overflow detected!\n"); } -EXPORT_SYMBOL(copy_to_user); +EXPORT_SYMBOL(copy_from_user_overflow); -/** - * copy_from_user: - Copy a block of data from user space. - * @to: Destination address, in kernel space. - * @from: Source address, in user space. - * @n: Number of bytes to copy. - * - * Context: User context only. This function may sleep. - * - * Copy data from user space to kernel space. - * - * Returns number of bytes that could not be copied. - * On success, this will be zero. - * - * If some data could not be copied, this function will pad the copied - * data to the requested size using zero bytes. - */ -unsigned long -copy_from_user(void *to, const void __user *from, unsigned long n) +void copy_to_user_overflow(void) { - if (access_ok(VERIFY_READ, from, n)) - n = __copy_from_user(to, from, n); - else - memset(to, 0, n); - return n; + WARN(1, "Buffer overflow detected!\n"); } -EXPORT_SYMBOL(copy_from_user); +EXPORT_SYMBOL(copy_to_user_overflow); + +#ifdef CONFIG_PAX_MEMORY_UDEREF +void __set_fs(mm_segment_t x) +{ + switch (x.seg) { + case 0: + loadsegment(gs, 0); + break; + case TASK_SIZE_MAX: + loadsegment(gs, __USER_DS); + break; + case -1UL: + loadsegment(gs, __KERNEL_DS); + break; + default: + BUG(); + } + return; +} +EXPORT_SYMBOL(__set_fs); + +void set_fs(mm_segment_t x) +{ + current_thread_info()->addr_limit = x; + __set_fs(x); +} +EXPORT_SYMBOL(set_fs); +#endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/lib/usercopy_64.c linux-2.6.32.59-pax/arch/x86/lib/usercopy_64.c --- linux-2.6.32.59/arch/x86/lib/usercopy_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/lib/usercopy_64.c 2012-06-18 00:50:01.162395950 +0200 @@ -42,6 +42,12 @@ long __strncpy_from_user(char *dst, const char __user *src, long count) { long res; + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)src < PAX_USER_SHADOW_BASE) + src += PAX_USER_SHADOW_BASE; +#endif + __do_strncpy_from_user(dst, src, count, res); return res; } @@ -65,6 +71,12 @@ unsigned long __clear_user(void __user * { long __d0; might_fault(); + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)addr < PAX_USER_SHADOW_BASE) + addr += PAX_USER_SHADOW_BASE; +#endif + /* no memory constraint because it doesn't change any memory gcc knows about */ asm volatile( @@ -149,12 +161,20 @@ long strlen_user(const char __user *s) } EXPORT_SYMBOL(strlen_user); -unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len) +unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long len) { - if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { - return copy_user_generic((__force void *)to, (__force void *)from, len); - } - return len; + if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { + +#ifdef CONFIG_PAX_MEMORY_UDEREF + if ((unsigned long)to < PAX_USER_SHADOW_BASE) + to += PAX_USER_SHADOW_BASE; + if ((unsigned long)from < PAX_USER_SHADOW_BASE) + from += PAX_USER_SHADOW_BASE; +#endif + + return copy_user_generic((void __force_kernel *)to, (void __force_kernel *)from, len); + } + return len; } EXPORT_SYMBOL(copy_in_user); @@ -164,7 +184,7 @@ EXPORT_SYMBOL(copy_in_user); * it is not necessary to optimize tail handling. */ unsigned long -copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest) +copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) { char c; unsigned zero_len; @@ -181,3 +201,15 @@ copy_user_handle_tail(char *to, char *fr break; return len; } + +void copy_from_user_overflow(void) +{ + WARN(1, "Buffer overflow detected!\n"); +} +EXPORT_SYMBOL(copy_from_user_overflow); + +void copy_to_user_overflow(void) +{ + WARN(1, "Buffer overflow detected!\n"); +} +EXPORT_SYMBOL(copy_to_user_overflow); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/Makefile linux-2.6.32.59-pax/arch/x86/Makefile --- linux-2.6.32.59/arch/x86/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/Makefile 2012-03-13 13:15:34.612098018 +0100 @@ -46,6 +46,7 @@ else UTS_MACHINE := x86_64 CHECKFLAGS += -D__x86_64__ -m64 + biarch := $(call cc-option,-m64) KBUILD_AFLAGS += -m64 KBUILD_CFLAGS += -m64 @@ -189,3 +190,12 @@ define archhelp echo ' FDARGS="..." arguments for the booted kernel' echo ' FDINITRD=file initrd for the booted kernel' endef + +define OLD_LD + +*** ${VERSION}.${PATCHLEVEL} PaX kernels no longer build correctly with old versions of binutils. +*** Please upgrade your binutils to 2.18 or newer +endef + +archprepare: + $(if $(LDFLAGS_BUILD_ID),,$(error $(OLD_LD))) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/extable.c linux-2.6.32.59-pax/arch/x86/mm/extable.c --- linux-2.6.32.59/arch/x86/mm/extable.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/extable.c 2012-03-13 13:15:34.612098018 +0100 @@ -1,14 +1,71 @@ #include #include +#include #include +#include +/* + * The exception table needs to be sorted so that the binary + * search that we use to find entries in it works properly. + * This is used both for the kernel exception table and for + * the exception tables of modules that get loaded. + */ +static int cmp_ex(const void *a, const void *b) +{ + const struct exception_table_entry *x = a, *y = b; + + /* avoid overflow */ + if (x->insn > y->insn) + return 1; + if (x->insn < y->insn) + return -1; + return 0; +} + +static void swap_ex(void *a, void *b, int size) +{ + struct exception_table_entry t, *x = a, *y = b; + + t = *x; + + pax_open_kernel(); + *x = *y; + *y = t; + pax_close_kernel(); +} + +void sort_extable(struct exception_table_entry *start, + struct exception_table_entry *finish) +{ + sort(start, finish - start, sizeof(struct exception_table_entry), + cmp_ex, swap_ex); +} + +#ifdef CONFIG_MODULES +/* + * If the exception table is sorted, any referring to the module init + * will be at the beginning or the end. + */ +void trim_init_extable(struct module *m) +{ + /*trim the beginning*/ + while (m->num_exentries && within_module_init(m->extable[0].insn, m)) { + m->extable++; + m->num_exentries--; + } + /*trim the end*/ + while (m->num_exentries && + within_module_init(m->extable[m->num_exentries-1].insn, m)) + m->num_exentries--; +} +#endif /* CONFIG_MODULES */ int fixup_exception(struct pt_regs *regs) { const struct exception_table_entry *fixup; #ifdef CONFIG_PNPBIOS - if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) { + if (unlikely(!v8086_mode(regs) && SEGMENT_IS_PNP_CODE(regs->cs))) { extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp; extern u32 pnp_bios_is_utter_crap; pnp_bios_is_utter_crap = 1; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/fault.c linux-2.6.32.59-pax/arch/x86/mm/fault.c --- linux-2.6.32.59/arch/x86/mm/fault.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/fault.c 2012-03-13 13:15:34.612098018 +0100 @@ -11,10 +11,19 @@ #include /* __kprobes, ... */ #include /* kmmio_handler, ... */ #include /* perf_sw_event */ +#include +#include #include /* dotraplinkage, ... */ #include /* pgd_*(), ... */ #include /* kmemcheck_*(), ... */ +#include +#include + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +#include +#include "../kernel/dumpstack.h" +#endif /* * Page fault error code bits: @@ -51,7 +60,7 @@ static inline int notify_page_fault(stru int ret = 0; /* kprobe_running() needs smp_processor_id() */ - if (kprobes_built_in() && !user_mode_vm(regs)) { + if (kprobes_built_in() && !user_mode(regs)) { preempt_disable(); if (kprobe_running() && kprobe_fault_handler(regs, 14)) ret = 1; @@ -112,7 +121,10 @@ check_prefetch_opcode(struct pt_regs *re return !instr_lo || (instr_lo>>1) == 1; case 0x00: /* Prefetch instruction is 0x0F0D or 0x0F18 */ - if (probe_kernel_address(instr, opcode)) + if (user_mode(regs)) { + if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1)) + return 0; + } else if (probe_kernel_address(instr, opcode)) return 0; *prefetch = (instr_lo == 0xF) && @@ -146,7 +158,10 @@ is_prefetch(struct pt_regs *regs, unsign while (instr < max_instr) { unsigned char opcode; - if (probe_kernel_address(instr, opcode)) + if (user_mode(regs)) { + if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1)) + break; + } else if (probe_kernel_address(instr, opcode)) break; instr++; @@ -172,6 +187,34 @@ force_sig_info_fault(int si_signo, int s force_sig_info(si_signo, &info, tsk); } +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) +static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address); +#endif + +#ifdef CONFIG_PAX_EMUTRAMP +static int pax_handle_fetch_fault(struct pt_regs *regs); +#endif + +#ifdef CONFIG_PAX_PAGEEXEC +static inline pmd_t * pax_get_pmd(struct mm_struct *mm, unsigned long address) +{ + pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; + + pgd = pgd_offset(mm, address); + if (!pgd_present(*pgd)) + return NULL; + pud = pud_offset(pgd, address); + if (!pud_present(*pud)) + return NULL; + pmd = pmd_offset(pud, address); + if (!pmd_present(*pmd)) + return NULL; + return pmd; +} +#endif + DEFINE_SPINLOCK(pgd_lock); LIST_HEAD(pgd_list); @@ -224,11 +267,24 @@ void vmalloc_sync_all(void) address += PMD_SIZE) { unsigned long flags; + +#ifdef CONFIG_PAX_PER_CPU_PGD + unsigned long cpu; +#else struct page *page; +#endif spin_lock_irqsave(&pgd_lock, flags); + +#ifdef CONFIG_PAX_PER_CPU_PGD + for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { + pgd_t *pgd = get_cpu_pgd(cpu); +#else list_for_each_entry(page, &pgd_list, lru) { - if (!vmalloc_sync_one(page_address(page), address)) + pgd_t *pgd = page_address(page); +#endif + + if (!vmalloc_sync_one(pgd, address)) break; } spin_unlock_irqrestore(&pgd_lock, flags); @@ -258,6 +314,11 @@ static noinline int vmalloc_fault(unsign * an interrupt in the middle of a task switch.. */ pgd_paddr = read_cr3(); + +#ifdef CONFIG_PAX_PER_CPU_PGD + BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (pgd_paddr & PHYSICAL_PAGE_MASK)); +#endif + pmd_k = vmalloc_sync_one(__va(pgd_paddr), address); if (!pmd_k) return -1; @@ -332,15 +393,27 @@ void vmalloc_sync_all(void) const pgd_t *pgd_ref = pgd_offset_k(address); unsigned long flags; + +#ifdef CONFIG_PAX_PER_CPU_PGD + unsigned long cpu; +#else struct page *page; +#endif if (pgd_none(*pgd_ref)) continue; spin_lock_irqsave(&pgd_lock, flags); + +#ifdef CONFIG_PAX_PER_CPU_PGD + for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { + pgd_t *pgd = pgd_offset_cpu(cpu, address); +#else list_for_each_entry(page, &pgd_list, lru) { pgd_t *pgd; pgd = (pgd_t *)page_address(page) + pgd_index(address); +#endif + if (pgd_none(*pgd)) set_pgd(pgd, *pgd_ref); else @@ -373,7 +446,14 @@ static noinline int vmalloc_fault(unsign * happen within a race in page table update. In the later * case just flush: */ + +#ifdef CONFIG_PAX_PER_CPU_PGD + BUG_ON(__pa(get_cpu_pgd(smp_processor_id())) != (read_cr3() & PHYSICAL_PAGE_MASK)); + pgd = pgd_offset_cpu(smp_processor_id(), address); +#else pgd = pgd_offset(current->active_mm, address); +#endif + pgd_ref = pgd_offset_k(address); if (pgd_none(*pgd_ref)) return -1; @@ -535,7 +615,7 @@ static int is_errata93(struct pt_regs *r static int is_errata100(struct pt_regs *regs, unsigned long address) { #ifdef CONFIG_X86_64 - if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) && (address >> 32)) + if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) && (address >> 32)) return 1; #endif return 0; @@ -562,7 +642,7 @@ static int is_f00f_bug(struct pt_regs *r } static const char nx_warning[] = KERN_CRIT -"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n"; +"kernel tried to execute NX-protected page - exploit attempt? (uid: %d, task: %s, pid: %d)\n"; static void show_fault_oops(struct pt_regs *regs, unsigned long error_code, @@ -571,15 +651,21 @@ show_fault_oops(struct pt_regs *regs, un if (!oops_may_print()) return; - if (error_code & PF_INSTR) { + if (nx_enabled && (error_code & PF_INSTR)) { unsigned int level; pte_t *pte = lookup_address(address, &level); if (pte && pte_present(*pte) && !pte_exec(*pte)) - printk(nx_warning, current_uid()); + printk(nx_warning, current_uid(), current->comm, task_pid_nr(current)); } +#ifdef CONFIG_PAX_KERNEXEC + if (init_mm.start_code <= address && address < init_mm.end_code) + printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", + current->comm, task_pid_nr(current), current_uid(), current_euid()); +#endif + printk(KERN_ALERT "BUG: unable to handle kernel "); if (address < PAGE_SIZE) printk(KERN_CONT "NULL pointer dereference"); @@ -705,6 +791,23 @@ __bad_area_nosemaphore(struct pt_regs *r { struct task_struct *tsk = current; +#ifdef CONFIG_X86_64 + struct mm_struct *mm = tsk->mm; + + if (mm && (error_code & PF_INSTR) && mm->context.vdso) { + if (regs->ip == (unsigned long)vgettimeofday) { + regs->ip = (unsigned long)VDSO64_SYMBOL(mm->context.vdso, fallback_gettimeofday); + return; + } else if (regs->ip == (unsigned long)vtime) { + regs->ip = (unsigned long)VDSO64_SYMBOL(mm->context.vdso, fallback_time); + return; + } else if (regs->ip == (unsigned long)vgetcpu) { + regs->ip = (unsigned long)VDSO64_SYMBOL(mm->context.vdso, getcpu); + return; + } + } +#endif + /* User mode accesses just cause a SIGSEGV */ if (error_code & PF_USER) { /* @@ -722,6 +825,21 @@ __bad_area_nosemaphore(struct pt_regs *r if (is_errata100(regs, address)) return; +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + if (pax_is_fetch_fault(regs, error_code, address)) { + +#ifdef CONFIG_PAX_EMUTRAMP + switch (pax_handle_fetch_fault(regs)) { + case 2: + return; + } +#endif + + pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp); + do_group_exit(SIGKILL); + } +#endif + if (unlikely(show_unhandled_signals)) show_signal_msg(regs, error_code, address, tsk); @@ -818,7 +936,7 @@ do_sigbus(struct pt_regs *regs, unsigned if (fault & VM_FAULT_HWPOISON) { printk(KERN_ERR "MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n", - tsk->comm, tsk->pid, address); + tsk->comm, task_pid_nr(tsk), address); code = BUS_MCEERR_AR; } #endif @@ -857,6 +975,99 @@ static int spurious_fault_check(unsigned return 1; } +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) +static int pax_handle_pageexec_fault(struct pt_regs *regs, struct mm_struct *mm, unsigned long address, unsigned long error_code) +{ + pte_t *pte; + pmd_t *pmd; + spinlock_t *ptl; + unsigned char pte_mask; + + if (nx_enabled || (error_code & (PF_PROT|PF_USER)) != (PF_PROT|PF_USER) || v8086_mode(regs) || + !(mm->pax_flags & MF_PAX_PAGEEXEC)) + return 0; + + /* PaX: it's our fault, let's handle it if we can */ + + /* PaX: take a look at read faults before acquiring any locks */ + if (unlikely(!(error_code & PF_WRITE) && (regs->ip == address))) { + /* instruction fetch attempt from a protected page in user mode */ + up_read(&mm->mmap_sem); + +#ifdef CONFIG_PAX_EMUTRAMP + switch (pax_handle_fetch_fault(regs)) { + case 2: + return 1; + } +#endif + + pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp); + do_group_exit(SIGKILL); + } + + pmd = pax_get_pmd(mm, address); + if (unlikely(!pmd)) + return 0; + + pte = pte_offset_map_lock(mm, pmd, address, &ptl); + if (unlikely(!(pte_val(*pte) & _PAGE_PRESENT) || pte_user(*pte))) { + pte_unmap_unlock(pte, ptl); + return 0; + } + + if (unlikely((error_code & PF_WRITE) && !pte_write(*pte))) { + /* write attempt to a protected page in user mode */ + pte_unmap_unlock(pte, ptl); + return 0; + } + +#ifdef CONFIG_SMP + if (likely(address > get_limit(regs->cs) && cpu_isset(smp_processor_id(), mm->context.cpu_user_cs_mask))) +#else + if (likely(address > get_limit(regs->cs))) +#endif + { + set_pte(pte, pte_mkread(*pte)); + __flush_tlb_one(address); + pte_unmap_unlock(pte, ptl); + up_read(&mm->mmap_sem); + return 1; + } + + pte_mask = _PAGE_ACCESSED | _PAGE_USER | ((error_code & PF_WRITE) << (_PAGE_BIT_DIRTY-1)); + + /* + * PaX: fill DTLB with user rights and retry + */ + __asm__ __volatile__ ( + "orb %2,(%1)\n" +#if defined(CONFIG_M586) || defined(CONFIG_M586TSC) +/* + * PaX: let this uncommented 'invlpg' remind us on the behaviour of Intel's + * (and AMD's) TLBs. namely, they do not cache PTEs that would raise *any* + * page fault when examined during a TLB load attempt. this is true not only + * for PTEs holding a non-present entry but also present entries that will + * raise a page fault (such as those set up by PaX, or the copy-on-write + * mechanism). in effect it means that we do *not* need to flush the TLBs + * for our target pages since their PTEs are simply not in the TLBs at all. + + * the best thing in omitting it is that we gain around 15-20% speed in the + * fast path of the page fault handler and can get rid of tracing since we + * can no longer flush unintended entries. + */ + "invlpg (%0)\n" +#endif + __copyuser_seg"testb $0,(%0)\n" + "xorb %3,(%1)\n" + : + : "r" (address), "r" (pte), "q" (pte_mask), "i" (_PAGE_USER) + : "memory", "cc"); + pte_unmap_unlock(pte, ptl); + up_read(&mm->mmap_sem); + return 1; +} +#endif + /* * Handle a spurious fault caused by a stale TLB entry. * @@ -923,6 +1134,9 @@ int show_unhandled_signals = 1; static inline int access_error(unsigned long error_code, int write, struct vm_area_struct *vma) { + if (nx_enabled && (error_code & PF_INSTR) && !(vma->vm_flags & VM_EXEC)) + return 1; + if (write) { /* write, present and write, not present: */ if (unlikely(!(vma->vm_flags & VM_WRITE))) @@ -956,17 +1170,31 @@ do_page_fault(struct pt_regs *regs, unsi { struct vm_area_struct *vma; struct task_struct *tsk; - unsigned long address; struct mm_struct *mm; int write; int fault; + /* Get the faulting address: */ + unsigned long address = read_cr2(); + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + if (!user_mode(regs) && address < 2 * PAX_USER_SHADOW_BASE) { + if (!search_exception_tables(regs->ip)) { + bad_area_nosemaphore(regs, error_code, address); + return; + } + if (address < PAX_USER_SHADOW_BASE) { + printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n"); + printk(KERN_ERR "PAX: faulting IP: %pS\n", (void *)regs->ip); + show_trace_log_lvl(NULL, NULL, (void *)regs->sp, regs->bp, KERN_ERR); + } else + address -= PAX_USER_SHADOW_BASE; + } +#endif + tsk = current; mm = tsk->mm; - /* Get the faulting address: */ - address = read_cr2(); - /* * Detect and handle instructions that would cause a page fault for * both a tracked kernel page and a userspace page. @@ -1026,7 +1254,7 @@ do_page_fault(struct pt_regs *regs, unsi * User-mode registers count as a user access even for any * potential system fault or CPU buglet: */ - if (user_mode_vm(regs)) { + if (user_mode(regs)) { local_irq_enable(); error_code |= PF_USER; } else { @@ -1080,6 +1308,11 @@ do_page_fault(struct pt_regs *regs, unsi might_sleep(); } +#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) + if (pax_handle_pageexec_fault(regs, mm, address, error_code)) + return; +#endif + vma = find_vma(mm, address); if (unlikely(!vma)) { bad_area(regs, error_code, address); @@ -1091,18 +1324,24 @@ do_page_fault(struct pt_regs *regs, unsi bad_area(regs, error_code, address); return; } - if (error_code & PF_USER) { - /* - * Accessing the stack below %sp is always a bug. - * The large cushion allows instructions like enter - * and pusha to work. ("enter $65535, $31" pushes - * 32 pointers and then decrements %sp by 65535.) - */ - if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < regs->sp)) { - bad_area(regs, error_code, address); - return; - } + /* + * Accessing the stack below %sp is always a bug. + * The large cushion allows instructions like enter + * and pusha to work. ("enter $65535, $31" pushes + * 32 pointers and then decrements %sp by 65535.) + */ + if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < task_pt_regs(tsk)->sp)) { + bad_area(regs, error_code, address); + return; + } + +#ifdef CONFIG_PAX_SEGMEXEC + if (unlikely((mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end - SEGMEXEC_TASK_SIZE - 1 < address - SEGMEXEC_TASK_SIZE - 1)) { + bad_area(regs, error_code, address); + return; } +#endif + if (unlikely(expand_stack(vma, address))) { bad_area(regs, error_code, address); return; @@ -1146,3 +1385,292 @@ good_area: up_read(&mm->mmap_sem); } + +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) +static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address) +{ + struct mm_struct *mm = current->mm; + unsigned long ip = regs->ip; + + if (v8086_mode(regs)) + ip = ((regs->cs & 0xffff) << 4) + (ip & 0xffff); + +#ifdef CONFIG_PAX_PAGEEXEC + if (mm->pax_flags & MF_PAX_PAGEEXEC) { + if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) + return true; + if (!(error_code & (PF_PROT | PF_WRITE)) && ip == address) + return true; + return false; + } +#endif + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) { + if (!(error_code & (PF_PROT | PF_WRITE)) && (ip + SEGMEXEC_TASK_SIZE == address)) + return true; + return false; + } +#endif + + return false; +} +#endif + +#ifdef CONFIG_PAX_EMUTRAMP +static int pax_handle_fetch_fault_32(struct pt_regs *regs) +{ + int err; + + do { /* PaX: libffi trampoline emulation */ + unsigned char mov, jmp; + unsigned int addr1, addr2; + +#ifdef CONFIG_X86_64 + if ((regs->ip + 9) >> 32) + break; +#endif + + err = get_user(mov, (unsigned char __user *)regs->ip); + err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); + err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5)); + err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); + + if (err) + break; + + if (mov == 0xB8 && jmp == 0xE9) { + regs->ax = addr1; + regs->ip = (unsigned int)(regs->ip + addr2 + 10); + return 2; + } + } while (0); + + do { /* PaX: gcc trampoline emulation #1 */ + unsigned char mov1, mov2; + unsigned short jmp; + unsigned int addr1, addr2; + +#ifdef CONFIG_X86_64 + if ((regs->ip + 11) >> 32) + break; +#endif + + err = get_user(mov1, (unsigned char __user *)regs->ip); + err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); + err |= get_user(mov2, (unsigned char __user *)(regs->ip + 5)); + err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); + err |= get_user(jmp, (unsigned short __user *)(regs->ip + 10)); + + if (err) + break; + + if (mov1 == 0xB9 && mov2 == 0xB8 && jmp == 0xE0FF) { + regs->cx = addr1; + regs->ax = addr2; + regs->ip = addr2; + return 2; + } + } while (0); + + do { /* PaX: gcc trampoline emulation #2 */ + unsigned char mov, jmp; + unsigned int addr1, addr2; + +#ifdef CONFIG_X86_64 + if ((regs->ip + 9) >> 32) + break; +#endif + + err = get_user(mov, (unsigned char __user *)regs->ip); + err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1)); + err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5)); + err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6)); + + if (err) + break; + + if (mov == 0xB9 && jmp == 0xE9) { + regs->cx = addr1; + regs->ip = (unsigned int)(regs->ip + addr2 + 10); + return 2; + } + } while (0); + + return 1; /* PaX in action */ +} + +#ifdef CONFIG_X86_64 +static int pax_handle_fetch_fault_64(struct pt_regs *regs) +{ + int err; + + do { /* PaX: libffi trampoline emulation */ + unsigned short mov1, mov2, jmp1; + unsigned char stcclc, jmp2; + unsigned long addr1, addr2; + + err = get_user(mov1, (unsigned short __user *)regs->ip); + err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2)); + err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10)); + err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12)); + err |= get_user(stcclc, (unsigned char __user *)(regs->ip + 20)); + err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 21)); + err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 23)); + + if (err) + break; + + if (mov1 == 0xBB49 && mov2 == 0xBA49 && (stcclc == 0xF8 || stcclc == 0xF9) && jmp1 == 0xFF49 && jmp2 == 0xE3) { + regs->r11 = addr1; + regs->r10 = addr2; + if (stcclc == 0xF8) + regs->flags &= ~X86_EFLAGS_CF; + else + regs->flags |= X86_EFLAGS_CF; + regs->ip = addr1; + return 2; + } + } while (0); + + do { /* PaX: gcc trampoline emulation #1 */ + unsigned short mov1, mov2, jmp1; + unsigned char jmp2; + unsigned int addr1; + unsigned long addr2; + + err = get_user(mov1, (unsigned short __user *)regs->ip); + err |= get_user(addr1, (unsigned int __user *)(regs->ip + 2)); + err |= get_user(mov2, (unsigned short __user *)(regs->ip + 6)); + err |= get_user(addr2, (unsigned long __user *)(regs->ip + 8)); + err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 16)); + err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 18)); + + if (err) + break; + + if (mov1 == 0xBB41 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { + regs->r11 = addr1; + regs->r10 = addr2; + regs->ip = addr1; + return 2; + } + } while (0); + + do { /* PaX: gcc trampoline emulation #2 */ + unsigned short mov1, mov2, jmp1; + unsigned char jmp2; + unsigned long addr1, addr2; + + err = get_user(mov1, (unsigned short __user *)regs->ip); + err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2)); + err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10)); + err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12)); + err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 20)); + err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 22)); + + if (err) + break; + + if (mov1 == 0xBB49 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) { + regs->r11 = addr1; + regs->r10 = addr2; + regs->ip = addr1; + return 2; + } + } while (0); + + return 1; /* PaX in action */ +} +#endif + +/* + * PaX: decide what to do with offenders (regs->ip = fault address) + * + * returns 1 when task should be killed + * 2 when gcc trampoline was detected + */ +static int pax_handle_fetch_fault(struct pt_regs *regs) +{ + if (v8086_mode(regs)) + return 1; + + if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP)) + return 1; + +#ifdef CONFIG_X86_32 + return pax_handle_fetch_fault_32(regs); +#else + if (regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) + return pax_handle_fetch_fault_32(regs); + else + return pax_handle_fetch_fault_64(regs); +#endif +} +#endif + +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) +void pax_report_insns(struct pt_regs *regs, void *pc, void *sp) +{ + long i; + + printk(KERN_ERR "PAX: bytes at PC: "); + for (i = 0; i < 20; i++) { + unsigned char c; + if (get_user(c, (unsigned char __force_user *)pc+i)) + printk(KERN_CONT "?? "); + else + printk(KERN_CONT "%02x ", c); + } + printk("\n"); + + printk(KERN_ERR "PAX: bytes at SP-%lu: ", (unsigned long)sizeof(long)); + for (i = -1; i < 80 / (long)sizeof(long); i++) { + unsigned long c; + if (get_user(c, (unsigned long __force_user *)sp+i)) { +#ifdef CONFIG_X86_32 + printk(KERN_CONT "???????? "); +#else + if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) + printk(KERN_CONT "???????? ???????? "); + else + printk(KERN_CONT "???????????????? "); +#endif + } else { +#ifdef CONFIG_X86_64 + if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) { + printk(KERN_CONT "%08x ", (unsigned int)c); + printk(KERN_CONT "%08x ", (unsigned int)(c >> 32)); + } else +#endif + printk(KERN_CONT "%0*lx ", 2 * (int)sizeof(long), c); + } + } + printk("\n"); +} +#endif + +/** + * probe_kernel_write(): safely attempt to write to a location + * @dst: address to write to + * @src: pointer to the data that shall be written + * @size: size of the data chunk + * + * Safely write to address @dst from the buffer at @src. If a kernel fault + * happens, handle that and return -EFAULT. + */ +long notrace probe_kernel_write(void *dst, const void *src, size_t size) +{ + long ret; + mm_segment_t old_fs = get_fs(); + + set_fs(KERNEL_DS); + pagefault_disable(); + pax_open_kernel(); + ret = __copy_to_user_inatomic((void __force_user *)dst, src, size); + pax_close_kernel(); + pagefault_enable(); + set_fs(old_fs); + + return ret ? -EFAULT : 0; +} diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/gup.c linux-2.6.32.59-pax/arch/x86/mm/gup.c --- linux-2.6.32.59/arch/x86/mm/gup.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/gup.c 2012-03-13 13:15:34.612098018 +0100 @@ -237,7 +237,7 @@ int __get_user_pages_fast(unsigned long addr = start; len = (unsigned long) nr_pages << PAGE_SHIFT; end = start + len; - if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ, + if (unlikely(!__access_ok(write ? VERIFY_WRITE : VERIFY_READ, (void __user *)start, len))) return 0; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/highmem_32.c linux-2.6.32.59-pax/arch/x86/mm/highmem_32.c --- linux-2.6.32.59/arch/x86/mm/highmem_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/highmem_32.c 2012-03-13 13:15:34.616098018 +0100 @@ -43,7 +43,10 @@ void *kmap_atomic_prot(struct page *page idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); BUG_ON(!pte_none(*(kmap_pte-idx))); + + pax_open_kernel(); set_pte(kmap_pte-idx, mk_pte(page, prot)); + pax_close_kernel(); return (void *)vaddr; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/hugetlbpage.c linux-2.6.32.59-pax/arch/x86/mm/hugetlbpage.c --- linux-2.6.32.59/arch/x86/mm/hugetlbpage.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/hugetlbpage.c 2012-05-08 23:38:04.255923391 +0200 @@ -267,13 +267,20 @@ static unsigned long hugetlb_get_unmappe struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - unsigned long start_addr; + unsigned long start_addr, pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; if (len > mm->cached_hole_size) { - start_addr = mm->free_area_cache; + start_addr = mm->free_area_cache; } else { - start_addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; + start_addr = mm->mmap_base; + mm->cached_hole_size = 0; } full_search: @@ -281,26 +288,27 @@ full_search: for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { /* At this point: (!vma || addr < vma->vm_end). */ - if (TASK_SIZE - len < addr) { + if (pax_task_size - len < addr) { /* * Start a new search - just in case we missed * some holes. */ - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = TASK_UNMAPPED_BASE; + if (start_addr != mm->mmap_base) { + start_addr = mm->mmap_base; mm->cached_hole_size = 0; goto full_search; } return -ENOMEM; } - if (!vma || addr + len <= vma->vm_start) { - mm->free_area_cache = addr + len; - return addr; - } + if (check_heap_stack_gap(vma, addr, len)) + break; if (addr + mm->cached_hole_size < vma->vm_start) mm->cached_hole_size = vma->vm_start - addr; addr = ALIGN(vma->vm_end, huge_page_size(h)); } + + mm->free_area_cache = addr + len; + return addr; } static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, @@ -309,10 +317,9 @@ static unsigned long hugetlb_get_unmappe { struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; - struct vm_area_struct *vma, *prev_vma; - unsigned long base = mm->mmap_base, addr = addr0; + struct vm_area_struct *vma; + unsigned long base = mm->mmap_base, addr; unsigned long largest_hole = mm->cached_hole_size; - int first_time = 1; /* don't allow allocations above current base */ if (mm->free_area_cache > base) @@ -322,64 +329,68 @@ static unsigned long hugetlb_get_unmappe largest_hole = 0; mm->free_area_cache = base; } -try_again: + /* make sure it can fit in the remaining address space */ if (mm->free_area_cache < len) goto fail; /* either no address requested or cant fit in requested address hole */ - addr = (mm->free_area_cache - len) & huge_page_mask(h); + addr = (mm->free_area_cache - len); do { + addr &= huge_page_mask(h); /* * Lookup failure means no vma is above this address, * i.e. return with success: */ - if (!(vma = find_vma_prev(mm, addr, &prev_vma))) + vma = find_vma(mm, addr); + if (!vma) return addr; /* * new region fits between prev_vma->vm_end and * vma->vm_start, use it: */ - if (addr + len <= vma->vm_start && - (!prev_vma || (addr >= prev_vma->vm_end))) { + if (check_heap_stack_gap(vma, addr, len)) { /* remember the address as a hint for next time */ - mm->cached_hole_size = largest_hole; - return (mm->free_area_cache = addr); - } else { - /* pull free_area_cache down to the first hole */ - if (mm->free_area_cache == vma->vm_end) { - mm->free_area_cache = vma->vm_start; - mm->cached_hole_size = largest_hole; - } + mm->cached_hole_size = largest_hole; + return (mm->free_area_cache = addr); + } + /* pull free_area_cache down to the first hole */ + if (mm->free_area_cache == vma->vm_end) { + mm->free_area_cache = vma->vm_start; + mm->cached_hole_size = largest_hole; } /* remember the largest hole we saw so far */ if (addr + largest_hole < vma->vm_start) - largest_hole = vma->vm_start - addr; + largest_hole = vma->vm_start - addr; /* try just below the current vma->vm_start */ - addr = (vma->vm_start - len) & huge_page_mask(h); - } while (len <= vma->vm_start); + addr = skip_heap_stack_gap(vma, len); + } while (!IS_ERR_VALUE(addr)); fail: /* - * if hint left us with no space for the requested - * mapping then try again: - */ - if (first_time) { - mm->free_area_cache = base; - largest_hole = 0; - first_time = 0; - goto try_again; - } - /* * A failed mmap() very likely causes application failure, * so fall back to the bottom-up function here. This scenario * can happen with large stack limits and large mmap() * allocations. */ - mm->free_area_cache = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + mm->mmap_base = SEGMEXEC_TASK_UNMAPPED_BASE; + else +#endif + + mm->mmap_base = TASK_UNMAPPED_BASE; + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + + mm->free_area_cache = mm->mmap_base; mm->cached_hole_size = ~0UL; addr = hugetlb_get_unmapped_area_bottomup(file, addr0, len, pgoff, flags); @@ -387,6 +398,7 @@ fail: /* * Restore the topdown base: */ + mm->mmap_base = base; mm->free_area_cache = base; mm->cached_hole_size = ~0UL; @@ -400,10 +412,19 @@ hugetlb_get_unmapped_area(struct file *f struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; struct vm_area_struct *vma; + unsigned long pax_task_size = TASK_SIZE; if (len & ~huge_page_mask(h)) return -EINVAL; - if (len > TASK_SIZE) + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif + + pax_task_size -= PAGE_SIZE; + + if (len > pax_task_size) return -ENOMEM; if (flags & MAP_FIXED) { @@ -415,8 +436,7 @@ hugetlb_get_unmapped_area(struct file *f if (addr) { addr = ALIGN(addr, huge_page_size(h)); vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + if (pax_task_size - len >= addr && check_heap_stack_gap(vma, addr, len)) return addr; } if (mm->get_unmapped_area == arch_get_unmapped_area) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/init_32.c linux-2.6.32.59-pax/arch/x86/mm/init_32.c --- linux-2.6.32.59/arch/x86/mm/init_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/init_32.c 2012-03-13 13:15:34.616098018 +0100 @@ -72,36 +72,6 @@ static __init void *alloc_low_page(void) } /* - * Creates a middle page table and puts a pointer to it in the - * given global directory entry. This only returns the gd entry - * in non-PAE compilation mode, since the middle layer is folded. - */ -static pmd_t * __init one_md_table_init(pgd_t *pgd) -{ - pud_t *pud; - pmd_t *pmd_table; - -#ifdef CONFIG_X86_PAE - if (!(pgd_val(*pgd) & _PAGE_PRESENT)) { - if (after_bootmem) - pmd_table = (pmd_t *)alloc_bootmem_pages(PAGE_SIZE); - else - pmd_table = (pmd_t *)alloc_low_page(); - paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT); - set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT)); - pud = pud_offset(pgd, 0); - BUG_ON(pmd_table != pmd_offset(pud, 0)); - - return pmd_table; - } -#endif - pud = pud_offset(pgd, 0); - pmd_table = pmd_offset(pud, 0); - - return pmd_table; -} - -/* * Create a page table and place a pointer to it in a middle page * directory entry: */ @@ -121,13 +91,28 @@ static pte_t * __init one_page_table_ini page_table = (pte_t *)alloc_low_page(); paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT); +#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) + set_pmd(pmd, __pmd(__pa(page_table) | _KERNPG_TABLE)); +#else set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); +#endif BUG_ON(page_table != pte_offset_kernel(pmd, 0)); } return pte_offset_kernel(pmd, 0); } +static pmd_t * __init one_md_table_init(pgd_t *pgd) +{ + pud_t *pud; + pmd_t *pmd_table; + + pud = pud_offset(pgd, 0); + pmd_table = pmd_offset(pud, 0); + + return pmd_table; +} + pmd_t * __init populate_extra_pmd(unsigned long vaddr) { int pgd_idx = pgd_index(vaddr); @@ -201,6 +186,7 @@ page_table_range_init(unsigned long star int pgd_idx, pmd_idx; unsigned long vaddr; pgd_t *pgd; + pud_t *pud; pmd_t *pmd; pte_t *pte = NULL; @@ -210,8 +196,13 @@ page_table_range_init(unsigned long star pgd = pgd_base + pgd_idx; for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) { - pmd = one_md_table_init(pgd); - pmd = pmd + pmd_index(vaddr); + pud = pud_offset(pgd, vaddr); + pmd = pmd_offset(pud, vaddr); + +#ifdef CONFIG_X86_PAE + paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT); +#endif + for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end); pmd++, pmd_idx++) { pte = page_table_kmap_check(one_page_table_init(pmd), @@ -223,11 +214,20 @@ page_table_range_init(unsigned long star } } -static inline int is_kernel_text(unsigned long addr) +static inline int is_kernel_text(unsigned long start, unsigned long end) { - if (addr >= PAGE_OFFSET && addr <= (unsigned long)__init_end) - return 1; - return 0; + if ((start > ktla_ktva((unsigned long)_etext) || + end <= ktla_ktva((unsigned long)_stext)) && + (start > ktla_ktva((unsigned long)_einittext) || + end <= ktla_ktva((unsigned long)_sinittext)) && + +#ifdef CONFIG_ACPI_SLEEP + (start > (unsigned long)__va(acpi_wakeup_address) + 0x4000 || end <= (unsigned long)__va(acpi_wakeup_address)) && +#endif + + (start > (unsigned long)__va(0xfffff) || end <= (unsigned long)__va(0xc0000))) + return 0; + return 1; } /* @@ -243,9 +243,10 @@ kernel_physical_mapping_init(unsigned lo int use_pse = page_size_mask == (1<> PAGE_SHIFT); +#endif if (pfn >= end_pfn) continue; @@ -291,14 +297,13 @@ repeat: #endif for (; pmd_idx < PTRS_PER_PMD && pfn < end_pfn; pmd++, pmd_idx++) { - unsigned int addr = pfn * PAGE_SIZE + PAGE_OFFSET; + unsigned long address = pfn * PAGE_SIZE + PAGE_OFFSET; /* * Map with big pages if possible, otherwise * create normal page tables: */ if (use_pse) { - unsigned int addr2; pgprot_t prot = PAGE_KERNEL_LARGE; /* * first pass will use the same initial @@ -308,11 +313,7 @@ repeat: __pgprot(PTE_IDENT_ATTR | _PAGE_PSE); - addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE + - PAGE_OFFSET + PAGE_SIZE-1; - - if (is_kernel_text(addr) || - is_kernel_text(addr2)) + if (is_kernel_text(address, address + PMD_SIZE)) prot = PAGE_KERNEL_LARGE_EXEC; pages_2m++; @@ -329,7 +330,7 @@ repeat: pte_ofs = pte_index((pfn<> 10, - (unsigned long)&_etext, (unsigned long)&_edata, - ((unsigned long)&_edata - (unsigned long)&_etext) >> 10, + (unsigned long)&_sdata, (unsigned long)&_edata, + ((unsigned long)&_edata - (unsigned long)&_sdata) >> 10, - (unsigned long)&_text, (unsigned long)&_etext, + ktla_ktva((unsigned long)&_text), ktla_ktva((unsigned long)&_etext), ((unsigned long)&_etext - (unsigned long)&_text) >> 10); /* @@ -1007,6 +1012,7 @@ void set_kernel_text_rw(void) if (!kernel_set_to_readonly) return; + start = ktla_ktva(start); pr_debug("Set kernel text: %lx - %lx for read write\n", start, start+size); @@ -1021,6 +1027,7 @@ void set_kernel_text_ro(void) if (!kernel_set_to_readonly) return; + start = ktla_ktva(start); pr_debug("Set kernel text: %lx - %lx for read only\n", start, start+size); @@ -1032,6 +1039,7 @@ void mark_rodata_ro(void) unsigned long start = PFN_ALIGN(_text); unsigned long size = PFN_ALIGN(_etext) - start; + start = ktla_ktva(start); set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT); printk(KERN_INFO "Write protecting the kernel text: %luk\n", size >> 10); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/init_64.c linux-2.6.32.59-pax/arch/x86/mm/init_64.c --- linux-2.6.32.59/arch/x86/mm/init_64.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/init_64.c 2012-05-08 23:38:04.267923473 +0200 @@ -123,7 +123,7 @@ static pud_t *fill_pud(pgd_t *pgd, unsig { if (pgd_none(*pgd)) { pud_t *pud = (pud_t *)spp_getpage(); - pgd_populate(&init_mm, pgd, pud); + pgd_populate_kernel(&init_mm, pgd, pud); if (pud != pud_offset(pgd, 0)) printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n", pud, pud_offset(pgd, 0)); @@ -135,7 +135,7 @@ static pmd_t *fill_pmd(pud_t *pud, unsig { if (pud_none(*pud)) { pmd_t *pmd = (pmd_t *) spp_getpage(); - pud_populate(&init_mm, pud, pmd); + pud_populate_kernel(&init_mm, pud, pmd); if (pmd != pmd_offset(pud, 0)) printk(KERN_ERR "PAGETABLE BUG #01! %p <-> %p\n", pmd, pmd_offset(pud, 0)); @@ -164,7 +164,9 @@ void set_pte_vaddr_pud(pud_t *pud_page, pmd = fill_pmd(pud, vaddr); pte = fill_pte(pmd, vaddr); + pax_open_kernel(); set_pte(pte, new_pte); + pax_close_kernel(); /* * It's enough to flush this one mapping. @@ -223,14 +225,12 @@ static void __init __init_extra_mapping( pgd = pgd_offset_k((unsigned long)__va(phys)); if (pgd_none(*pgd)) { pud = (pud_t *) spp_getpage(); - set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE | - _PAGE_USER)); + set_pgd(pgd, __pgd(__pa(pud) | _PAGE_TABLE)); } pud = pud_offset(pgd, (unsigned long)__va(phys)); if (pud_none(*pud)) { pmd = (pmd_t *) spp_getpage(); - set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | - _PAGE_USER)); + set_pud(pud, __pud(__pa(pmd) | _PAGE_TABLE)); } pmd = pmd_offset(pud, phys); BUG_ON(!pmd_none(*pmd)); @@ -507,7 +507,7 @@ phys_pud_init(pud_t *pud_page, unsigned unmap_low_page(pmd); spin_lock(&init_mm.page_table_lock); - pud_populate(&init_mm, pud, __va(pmd_phys)); + pud_populate_kernel(&init_mm, pud, __va(pmd_phys)); spin_unlock(&init_mm.page_table_lock); } __flush_tlb_all(); @@ -560,7 +560,7 @@ kernel_physical_mapping_init(unsigned lo unmap_low_page(pud); spin_lock(&init_mm.page_table_lock); - pgd_populate(&init_mm, pgd, __va(pud_phys)); + pgd_populate_kernel(&init_mm, pgd, __va(pud_phys)); spin_unlock(&init_mm.page_table_lock); } __flush_tlb_all(); @@ -675,6 +675,12 @@ void __init mem_init(void) pci_iommu_alloc(); +#ifdef CONFIG_PAX_PER_CPU_PGD + clone_pgd_range(get_cpu_pgd(0) + KERNEL_PGD_BOUNDARY, + swapper_pg_dir + KERNEL_PGD_BOUNDARY, + KERNEL_PGD_PTRS); +#endif + /* clear_bss() already clear the empty_zero_page */ reservedpages = 0; @@ -861,8 +867,8 @@ int kern_addr_valid(unsigned long addr) static struct vm_area_struct gate_vma = { .vm_start = VSYSCALL_START, .vm_end = VSYSCALL_START + (VSYSCALL_MAPPED_PAGES * PAGE_SIZE), - .vm_page_prot = PAGE_READONLY_EXEC, - .vm_flags = VM_READ | VM_EXEC + .vm_page_prot = PAGE_READONLY, + .vm_flags = VM_READ }; struct vm_area_struct *get_gate_vma(struct task_struct *tsk) @@ -896,7 +902,7 @@ int in_gate_area_no_task(unsigned long a const char *arch_vma_name(struct vm_area_struct *vma) { - if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) + if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) return "[vdso]"; if (vma == &gate_vma) return "[vsyscall]"; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/init.c linux-2.6.32.59-pax/arch/x86/mm/init.c --- linux-2.6.32.59/arch/x86/mm/init.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/init.c 2012-03-13 13:15:34.620098017 +0100 @@ -69,11 +69,7 @@ static void __init find_early_table_spac * cause a hotspot and fill up ZONE_DMA. The page tables * need roughly 0.5KB per GB. */ -#ifdef CONFIG_X86_32 - start = 0x7000; -#else - start = 0x8000; -#endif + start = 0x100000; e820_table_start = find_e820_area(start, max_pfn_mapped<> PAGE_SHIFT)) + return 1; +#endif + if ((ISA_START_ADDRESS >> PAGE_SHIFT) <= pagenr && pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT)) return 1; if (iomem_is_exclusive(pagenr << PAGE_SHIFT)) return 0; @@ -379,6 +381,86 @@ void free_init_pages(char *what, unsigne void free_initmem(void) { + +#ifdef CONFIG_PAX_KERNEXEC +#ifdef CONFIG_X86_32 + /* PaX: limit KERNEL_CS to actual size */ + unsigned long addr, limit; + struct desc_struct d; + int cpu; + + limit = paravirt_enabled() ? ktva_ktla(0xffffffff) : (unsigned long)&_etext; + limit = (limit - 1UL) >> PAGE_SHIFT; + + memset(__LOAD_PHYSICAL_ADDR + PAGE_OFFSET, POISON_FREE_INITMEM, PAGE_SIZE); + for (cpu = 0; cpu < nr_cpu_ids; cpu++) { + pack_descriptor(&d, get_desc_base(&get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_CS]), limit, 0x9B, 0xC); + write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEL_CS, &d, DESCTYPE_S); + } + + /* PaX: make KERNEL_CS read-only */ + addr = PFN_ALIGN(ktla_ktva((unsigned long)&_text)); + if (!paravirt_enabled()) + set_memory_ro(addr, (PFN_ALIGN(_sdata) - addr) >> PAGE_SHIFT); +/* + for (addr = ktla_ktva((unsigned long)&_text); addr < (unsigned long)&_sdata; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); + } +*/ +#ifdef CONFIG_X86_PAE + set_memory_nx(PFN_ALIGN(__init_begin), (PFN_ALIGN(__init_end) - PFN_ALIGN(__init_begin)) >> PAGE_SHIFT); +/* + for (addr = (unsigned long)&__init_begin; addr < (unsigned long)&__init_end; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); + } +*/ +#endif + +#ifdef CONFIG_MODULES + set_memory_4k((unsigned long)MODULES_EXEC_VADDR, (MODULES_EXEC_END - MODULES_EXEC_VADDR) >> PAGE_SHIFT); +#endif + +#else + pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; + unsigned long addr, end; + + /* PaX: make kernel code/rodata read-only, rest non-executable */ + for (addr = __START_KERNEL_map; addr < __START_KERNEL_map + KERNEL_IMAGE_SIZE; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + if (!pmd_present(*pmd)) + continue; + if ((unsigned long)_text <= addr && addr < (unsigned long)_sdata) + set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); + else + set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask))); + } + + addr = (unsigned long)__va(__pa(__START_KERNEL_map)); + end = addr + KERNEL_IMAGE_SIZE; + for (; addr < end; addr += PMD_SIZE) { + pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); + if (!pmd_present(*pmd)) + continue; + if ((unsigned long)__va(__pa(_text)) <= addr && addr < (unsigned long)__va(__pa(_sdata))) + set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW)); + } +#endif + + flush_tlb_all(); +#endif + free_init_pages("unused kernel memory", (unsigned long)(&__init_begin), (unsigned long)(&__init_end)); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/iomap_32.c linux-2.6.32.59-pax/arch/x86/mm/iomap_32.c --- linux-2.6.32.59/arch/x86/mm/iomap_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/iomap_32.c 2012-03-13 13:15:34.620098017 +0100 @@ -65,7 +65,11 @@ void *kmap_atomic_prot_pfn(unsigned long debug_kmap_atomic(type); idx = type + KM_TYPE_NR * smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); + + pax_open_kernel(); set_pte(kmap_pte - idx, pfn_pte(pfn, prot)); + pax_close_kernel(); + arch_flush_lazy_mmu_mode(); return (void *)vaddr; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/ioremap.c linux-2.6.32.59-pax/arch/x86/mm/ioremap.c --- linux-2.6.32.59/arch/x86/mm/ioremap.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/ioremap.c 2012-03-17 00:44:31.634675372 +0100 @@ -41,8 +41,8 @@ int page_is_ram(unsigned long pagenr) * Second special case: Some BIOSen report the PC BIOS * area (640->1Mb) as ram even though it is not. */ - if (pagenr >= (BIOS_BEGIN >> PAGE_SHIFT) && - pagenr < (BIOS_END >> PAGE_SHIFT)) + if (pagenr >= (ISA_START_ADDRESS >> PAGE_SHIFT) && + pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT)) return 0; for (i = 0; i < e820.nr_map; i++) { @@ -137,13 +137,10 @@ static void __iomem *__ioremap_caller(re /* * Don't allow anybody to remap normal RAM that we're using.. */ - for (pfn = phys_addr >> PAGE_SHIFT; - (pfn << PAGE_SHIFT) < (last_addr & PAGE_MASK); - pfn++) { - + for (pfn = phys_addr >> PAGE_SHIFT; ((resource_size_t)pfn << PAGE_SHIFT) < (last_addr & PAGE_MASK); pfn++) { int is_ram = page_is_ram(pfn); - if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) + if (is_ram && pfn_valid(pfn) && (pfn >= 0x100 || !PageReserved(pfn_to_page(pfn)))) return NULL; WARN_ON_ONCE(is_ram); } @@ -378,6 +375,9 @@ void *xlate_dev_mem_ptr(unsigned long ph /* If page is RAM, we can use __va. Otherwise ioremap and unmap. */ if (page_is_ram(start >> PAGE_SHIFT)) +#ifdef CONFIG_HIGHMEM + if ((start >> PAGE_SHIFT) < max_low_pfn) +#endif return __va(phys); addr = (void __force *)ioremap_default(start, PAGE_SIZE); @@ -407,7 +407,7 @@ static int __init early_ioremap_debug_se early_param("early_ioremap_debug", early_ioremap_debug_setup); static __initdata int after_paging_init; -static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss; +static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __read_only __aligned(PAGE_SIZE); static inline pmd_t * __init early_ioremap_pmd(unsigned long addr) { @@ -439,8 +439,7 @@ void __init early_ioremap_init(void) slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i); pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)); - memset(bm_pte, 0, sizeof(bm_pte)); - pmd_populate_kernel(&init_mm, pmd, bm_pte); + pmd_populate_user(&init_mm, pmd, bm_pte); /* * The boot-ioremap range spans multiple pmds, for which diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/kmemcheck/kmemcheck.c linux-2.6.32.59-pax/arch/x86/mm/kmemcheck/kmemcheck.c --- linux-2.6.32.59/arch/x86/mm/kmemcheck/kmemcheck.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/kmemcheck/kmemcheck.c 2012-03-13 13:15:34.620098017 +0100 @@ -622,9 +622,9 @@ bool kmemcheck_fault(struct pt_regs *reg * memory (e.g. tracked pages)? For now, we need this to avoid * invoking kmemcheck for PnP BIOS calls. */ - if (regs->flags & X86_VM_MASK) + if (v8086_mode(regs)) return false; - if (regs->cs != __KERNEL_CS) + if (regs->cs != __KERNEL_CS && regs->cs != __KERNEXEC_KERNEL_CS) return false; pte = kmemcheck_pte_lookup(address); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/mmap.c linux-2.6.32.59-pax/arch/x86/mm/mmap.c --- linux-2.6.32.59/arch/x86/mm/mmap.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/mmap.c 2012-03-13 13:15:34.624098017 +0100 @@ -49,7 +49,7 @@ static unsigned int stack_maxrandom_size * Leave an at least ~128 MB hole with possible stack randomization. */ #define MIN_GAP (128*1024*1024UL + stack_maxrandom_size()) -#define MAX_GAP (TASK_SIZE/6*5) +#define MAX_GAP (pax_task_size/6*5) /* * True on X86_32 or when emulating IA32 on X86_64 @@ -94,27 +94,40 @@ static unsigned long mmap_rnd(void) return rnd << PAGE_SHIFT; } -static unsigned long mmap_base(void) +static unsigned long mmap_base(struct mm_struct *mm) { unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur; + unsigned long pax_task_size = TASK_SIZE; + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + pax_task_size = SEGMEXEC_TASK_SIZE; +#endif if (gap < MIN_GAP) gap = MIN_GAP; else if (gap > MAX_GAP) gap = MAX_GAP; - return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd()); + return PAGE_ALIGN(pax_task_size - gap - mmap_rnd()); } /* * Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64 * does, but not when emulating X86_32 */ -static unsigned long mmap_legacy_base(void) +static unsigned long mmap_legacy_base(struct mm_struct *mm) { - if (mmap_is_ia32()) + if (mmap_is_ia32()) { + +#ifdef CONFIG_PAX_SEGMEXEC + if (mm->pax_flags & MF_PAX_SEGMEXEC) + return SEGMEXEC_TASK_UNMAPPED_BASE; + else +#endif + return TASK_UNMAPPED_BASE; - else + } else return TASK_UNMAPPED_BASE + mmap_rnd(); } @@ -125,11 +138,23 @@ static unsigned long mmap_legacy_base(vo void arch_pick_mmap_layout(struct mm_struct *mm) { if (mmap_is_legacy()) { - mm->mmap_base = mmap_legacy_base(); + mm->mmap_base = mmap_legacy_base(mm); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base += mm->delta_mmap; +#endif + mm->get_unmapped_area = arch_get_unmapped_area; mm->unmap_area = arch_unmap_area; } else { - mm->mmap_base = mmap_base(); + mm->mmap_base = mmap_base(mm); + +#ifdef CONFIG_PAX_RANDMMAP + if (mm->pax_flags & MF_PAX_RANDMMAP) + mm->mmap_base -= mm->delta_mmap + mm->delta_stack; +#endif + mm->get_unmapped_area = arch_get_unmapped_area_topdown; mm->unmap_area = arch_unmap_area_topdown; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/mmio-mod.c linux-2.6.32.59-pax/arch/x86/mm/mmio-mod.c --- linux-2.6.32.59/arch/x86/mm/mmio-mod.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/mmio-mod.c 2012-03-13 13:15:34.624098017 +0100 @@ -193,7 +193,7 @@ static void pre(struct kmmio_probe *p, s break; default: { - unsigned char *ip = (unsigned char *)instptr; + unsigned char *ip = (unsigned char *)ktla_ktva(instptr); my_trace->opcode = MMIO_UNKNOWN_OP; my_trace->width = 0; my_trace->value = (*ip) << 16 | *(ip + 1) << 8 | @@ -233,7 +233,7 @@ static void post(struct kmmio_probe *p, static void ioremap_trace_core(resource_size_t offset, unsigned long size, void __iomem *addr) { - static atomic_t next_id; + static atomic_unchecked_t next_id; struct remap_trace *trace = kmalloc(sizeof(*trace), GFP_KERNEL); /* These are page-unaligned. */ struct mmiotrace_map map = { @@ -257,7 +257,7 @@ static void ioremap_trace_core(resource_ .private = trace }, .phys = offset, - .id = atomic_inc_return(&next_id) + .id = atomic_inc_return_unchecked(&next_id) }; map.map_id = trace->id; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/numa_32.c linux-2.6.32.59-pax/arch/x86/mm/numa_32.c --- linux-2.6.32.59/arch/x86/mm/numa_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/numa_32.c 2012-03-13 13:15:34.624098017 +0100 @@ -98,7 +98,6 @@ unsigned long node_memmap_size_bytes(int } #endif -extern unsigned long find_max_low_pfn(void); extern unsigned long highend_pfn, highstart_pfn; #define LARGE_PAGE_BYTES (PTRS_PER_PTE * PAGE_SIZE) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/pageattr.c linux-2.6.32.59-pax/arch/x86/mm/pageattr.c --- linux-2.6.32.59/arch/x86/mm/pageattr.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/pageattr.c 2012-03-13 13:15:34.848098005 +0100 @@ -261,16 +261,17 @@ static inline pgprot_t static_protection * PCI BIOS based config access (CONFIG_PCI_GOBIOS) support. */ if (within(pfn, BIOS_BEGIN >> PAGE_SHIFT, BIOS_END >> PAGE_SHIFT)) - pgprot_val(forbidden) |= _PAGE_NX; + pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; /* * The kernel text needs to be executable for obvious reasons * Does not cover __inittext since that is gone later on. On * 64bit we do not enforce !NX on the low mapping */ - if (within(address, (unsigned long)_text, (unsigned long)_etext)) - pgprot_val(forbidden) |= _PAGE_NX; + if (within(address, ktla_ktva((unsigned long)_text), ktla_ktva((unsigned long)_etext))) + pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; +#ifdef CONFIG_DEBUG_RODATA /* * The .rodata section needs to be read-only. Using the pfn * catches all aliases. @@ -278,6 +279,14 @@ static inline pgprot_t static_protection if (within(pfn, __pa((unsigned long)__start_rodata) >> PAGE_SHIFT, __pa((unsigned long)__end_rodata) >> PAGE_SHIFT)) pgprot_val(forbidden) |= _PAGE_RW; +#endif + +#ifdef CONFIG_PAX_KERNEXEC + if (within(pfn, __pa((unsigned long)&_text), __pa((unsigned long)&_sdata))) { + pgprot_val(forbidden) |= _PAGE_RW; + pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask; + } +#endif prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden)); @@ -331,23 +340,37 @@ EXPORT_SYMBOL_GPL(lookup_address); static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte) { /* change init_mm */ + pax_open_kernel(); set_pte_atomic(kpte, pte); + #ifdef CONFIG_X86_32 if (!SHARED_KERNEL_PMD) { + +#ifdef CONFIG_PAX_PER_CPU_PGD + unsigned long cpu; +#else struct page *page; +#endif +#ifdef CONFIG_PAX_PER_CPU_PGD + for (cpu = 0; cpu < nr_cpu_ids; ++cpu) { + pgd_t *pgd = get_cpu_pgd(cpu); +#else list_for_each_entry(page, &pgd_list, lru) { - pgd_t *pgd; + pgd_t *pgd = (pgd_t *)page_address(page); +#endif + pud_t *pud; pmd_t *pmd; - pgd = (pgd_t *)page_address(page) + pgd_index(address); + pgd += pgd_index(address); pud = pud_offset(pgd, address); pmd = pmd_offset(pud, address); set_pte_atomic((pte_t *)pmd, pte); } } #endif + pax_close_kernel(); } static int diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/pageattr-test.c linux-2.6.32.59-pax/arch/x86/mm/pageattr-test.c --- linux-2.6.32.59/arch/x86/mm/pageattr-test.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/pageattr-test.c 2012-03-13 13:15:34.848098005 +0100 @@ -36,7 +36,7 @@ enum { static int pte_testbit(pte_t pte) { - return pte_flags(pte) & _PAGE_UNUSED1; + return pte_flags(pte) & _PAGE_CPA_TEST; } struct split_state { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/pat.c linux-2.6.32.59-pax/arch/x86/mm/pat.c --- linux-2.6.32.59/arch/x86/mm/pat.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/pat.c 2012-03-13 13:15:34.848098005 +0100 @@ -258,7 +258,7 @@ chk_conflict(struct memtype *new, struct conflict: printk(KERN_INFO "%s:%d conflicting memory types " - "%Lx-%Lx %s<->%s\n", current->comm, current->pid, new->start, + "%Lx-%Lx %s<->%s\n", current->comm, task_pid_nr(current), new->start, new->end, cattr_name(new->type), cattr_name(entry->type)); return -EBUSY; } @@ -559,7 +559,7 @@ unlock_ret: if (err) { printk(KERN_INFO "%s:%d freeing invalid memtype %Lx-%Lx\n", - current->comm, current->pid, start, end); + current->comm, task_pid_nr(current), start, end); } dprintk("free_memtype request 0x%Lx-0x%Lx\n", start, end); @@ -689,8 +689,8 @@ static inline int range_is_allowed(unsig while (cursor < to) { if (!devmem_is_allowed(pfn)) { printk(KERN_INFO - "Program %s tried to access /dev/mem between %Lx->%Lx.\n", - current->comm, from, to); + "Program %s tried to access /dev/mem between %Lx->%Lx (%Lx).\n", + current->comm, from, to, cursor); return 0; } cursor += PAGE_SIZE; @@ -755,7 +755,7 @@ int kernel_map_sync_memtype(u64 base, un printk(KERN_INFO "%s:%d ioremap_change_attr failed %s " "for %Lx-%Lx\n", - current->comm, current->pid, + current->comm, task_pid_nr(current), cattr_name(flags), base, (unsigned long long)(base + size)); return -EINVAL; @@ -813,7 +813,7 @@ static int reserve_pfn_range(u64 paddr, free_memtype(paddr, paddr + size); printk(KERN_ERR "%s:%d map pfn expected mapping type %s" " for %Lx-%Lx, got %s\n", - current->comm, current->pid, + current->comm, task_pid_nr(current), cattr_name(want_flags), (unsigned long long)paddr, (unsigned long long)(paddr + size), diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/pf_in.c linux-2.6.32.59-pax/arch/x86/mm/pf_in.c --- linux-2.6.32.59/arch/x86/mm/pf_in.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/pf_in.c 2012-03-13 13:15:34.848098005 +0100 @@ -148,7 +148,7 @@ enum reason_type get_ins_type(unsigned l int i; enum reason_type rv = OTHERS; - p = (unsigned char *)ins_addr; + p = (unsigned char *)ktla_ktva(ins_addr); p += skip_prefix(p, &prf); p += get_opcode(p, &opcode); @@ -168,7 +168,7 @@ static unsigned int get_ins_reg_width(un struct prefix_bits prf; int i; - p = (unsigned char *)ins_addr; + p = (unsigned char *)ktla_ktva(ins_addr); p += skip_prefix(p, &prf); p += get_opcode(p, &opcode); @@ -191,7 +191,7 @@ unsigned int get_ins_mem_width(unsigned struct prefix_bits prf; int i; - p = (unsigned char *)ins_addr; + p = (unsigned char *)ktla_ktva(ins_addr); p += skip_prefix(p, &prf); p += get_opcode(p, &opcode); @@ -417,7 +417,7 @@ unsigned long get_ins_reg_val(unsigned l int i; unsigned long rv; - p = (unsigned char *)ins_addr; + p = (unsigned char *)ktla_ktva(ins_addr); p += skip_prefix(p, &prf); p += get_opcode(p, &opcode); for (i = 0; i < ARRAY_SIZE(reg_rop); i++) @@ -472,7 +472,7 @@ unsigned long get_ins_imm_val(unsigned l int i; unsigned long rv; - p = (unsigned char *)ins_addr; + p = (unsigned char *)ktla_ktva(ins_addr); p += skip_prefix(p, &prf); p += get_opcode(p, &opcode); for (i = 0; i < ARRAY_SIZE(imm_wop); i++) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/pgtable_32.c linux-2.6.32.59-pax/arch/x86/mm/pgtable_32.c --- linux-2.6.32.59/arch/x86/mm/pgtable_32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/pgtable_32.c 2012-03-13 13:15:34.852098005 +0100 @@ -49,10 +49,13 @@ void set_pte_vaddr(unsigned long vaddr, return; } pte = pte_offset_kernel(pmd, vaddr); + + pax_open_kernel(); if (pte_val(pteval)) set_pte_at(&init_mm, vaddr, pte, pteval); else pte_clear(&init_mm, vaddr, pte); + pax_close_kernel(); /* * It's enough to flush this one mapping. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/pgtable.c linux-2.6.32.59-pax/arch/x86/mm/pgtable.c --- linux-2.6.32.59/arch/x86/mm/pgtable.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/pgtable.c 2012-05-28 00:40:22.991136113 +0200 @@ -83,9 +83,64 @@ static inline void pgd_list_del(pgd_t *p list_del(&page->lru); } -#define UNSHARED_PTRS_PER_PGD \ - (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) +pgdval_t clone_pgd_mask __read_only = ~_PAGE_PRESENT; +void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) +{ + unsigned int count = USER_PGD_PTRS; + + while (count--) + *dst++ = __pgd((pgd_val(*src++) | (_PAGE_NX & __supported_pte_mask)) & ~_PAGE_USER); +} +#endif + +#ifdef CONFIG_PAX_PER_CPU_PGD +void __clone_user_pgds(pgd_t *dst, const pgd_t *src) +{ + unsigned int count = USER_PGD_PTRS; + + while (count--) { + pgd_t pgd; + +#ifdef CONFIG_X86_64 + pgd = __pgd(pgd_val(*src++) | _PAGE_USER); +#else + pgd = *src++; +#endif + +#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF) + pgd = __pgd(pgd_val(pgd) & clone_pgd_mask); +#endif + + *dst++ = pgd; + } + +} +#endif + +#ifdef CONFIG_X86_64 +#define pxd_t pud_t +#define pyd_t pgd_t +#define paravirt_release_pxd(pfn) paravirt_release_pud(pfn) +#define pxd_free(mm, pud) pud_free((mm), (pud)) +#define pyd_populate(mm, pgd, pud) pgd_populate((mm), (pgd), (pud)) +#define pyd_offset(mm, address) pgd_offset((mm), (address)) +#define PYD_SIZE PGDIR_SIZE +#else +#define pxd_t pmd_t +#define pyd_t pud_t +#define paravirt_release_pxd(pfn) paravirt_release_pmd(pfn) +#define pxd_free(mm, pud) pmd_free((mm), (pud)) +#define pyd_populate(mm, pgd, pud) pud_populate((mm), (pgd), (pud)) +#define pyd_offset(mm, address) pud_offset((mm), (address)) +#define PYD_SIZE PUD_SIZE +#endif + +#ifdef CONFIG_PAX_PER_CPU_PGD +static inline void pgd_ctor(pgd_t *pgd) {} +static inline void pgd_dtor(pgd_t *pgd) {} +#else static void pgd_ctor(pgd_t *pgd) { /* If the pgd points to a shared pagetable level (either the @@ -119,6 +174,7 @@ static void pgd_dtor(pgd_t *pgd) pgd_list_del(pgd); spin_unlock_irqrestore(&pgd_lock, flags); } +#endif /* * List of all pgd's needed for non-PAE so it can invalidate entries @@ -131,7 +187,7 @@ static void pgd_dtor(pgd_t *pgd) * -- wli */ -#ifdef CONFIG_X86_PAE +#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) /* * In PAE mode, we need to do a cr3 reload (=tlb flush) when * updating the top-level pagetable entries to guarantee the @@ -143,7 +199,7 @@ static void pgd_dtor(pgd_t *pgd) * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate * and initialize the kernel pmds here. */ -#define PREALLOCATED_PMDS UNSHARED_PTRS_PER_PGD +#define PREALLOCATED_PXDS (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD) void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd) { @@ -161,36 +217,38 @@ void pud_populate(struct mm_struct *mm, */ flush_tlb_mm(mm); } +#elif defined(CONFIG_X86_64) && defined(CONFIG_PAX_PER_CPU_PGD) +#define PREALLOCATED_PXDS USER_PGD_PTRS #else /* !CONFIG_X86_PAE */ /* No need to prepopulate any pagetable entries in non-PAE modes. */ -#define PREALLOCATED_PMDS 0 +#define PREALLOCATED_PXDS 0 #endif /* CONFIG_X86_PAE */ -static void free_pmds(pmd_t *pmds[]) +static void free_pxds(pxd_t *pxds[]) { int i; - for(i = 0; i < PREALLOCATED_PMDS; i++) - if (pmds[i]) - free_page((unsigned long)pmds[i]); + for(i = 0; i < PREALLOCATED_PXDS; i++) + if (pxds[i]) + free_page((unsigned long)pxds[i]); } -static int preallocate_pmds(pmd_t *pmds[]) +static int preallocate_pxds(pxd_t *pxds[]) { int i; bool failed = false; - for(i = 0; i < PREALLOCATED_PMDS; i++) { - pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP); - if (pmd == NULL) + for(i = 0; i < PREALLOCATED_PXDS; i++) { + pxd_t *pxd = (pxd_t *)__get_free_page(PGALLOC_GFP); + if (pxd == NULL) failed = true; - pmds[i] = pmd; + pxds[i] = pxd; } if (failed) { - free_pmds(pmds); + free_pxds(pxds); return -ENOMEM; } @@ -203,51 +261,56 @@ static int preallocate_pmds(pmd_t *pmds[ * preallocate which never got a corresponding vma will need to be * freed manually. */ -static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp) +static void pgd_mop_up_pxds(struct mm_struct *mm, pgd_t *pgdp) { int i; - for(i = 0; i < PREALLOCATED_PMDS; i++) { + for(i = 0; i < PREALLOCATED_PXDS; i++) { pgd_t pgd = pgdp[i]; if (pgd_val(pgd) != 0) { - pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd); + pxd_t *pxd = (pxd_t *)pgd_page_vaddr(pgd); - pgdp[i] = native_make_pgd(0); + set_pgd(pgdp + i, native_make_pgd(0)); - paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT); - pmd_free(mm, pmd); + paravirt_release_pxd(pgd_val(pgd) >> PAGE_SHIFT); + pxd_free(mm, pxd); } } } -static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[]) +static void pgd_prepopulate_pxd(struct mm_struct *mm, pgd_t *pgd, pxd_t *pxds[]) { - pud_t *pud; + pyd_t *pyd; unsigned long addr; int i; - if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */ + if (PREALLOCATED_PXDS == 0) /* Work around gcc-3.4.x bug */ return; - pud = pud_offset(pgd, 0); - - for (addr = i = 0; i < PREALLOCATED_PMDS; - i++, pud++, addr += PUD_SIZE) { - pmd_t *pmd = pmds[i]; +#ifdef CONFIG_X86_64 + pyd = pyd_offset(mm, 0L); +#else + pyd = pyd_offset(pgd, 0L); +#endif + + for (addr = i = 0; i < PREALLOCATED_PXDS; + i++, pyd++, addr += PYD_SIZE) { + pxd_t *pxd = pxds[i]; if (i >= KERNEL_PGD_BOUNDARY) - memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]), - sizeof(pmd_t) * PTRS_PER_PMD); + memcpy(pxd, (pxd_t *)pgd_page_vaddr(swapper_pg_dir[i]), + sizeof(pxd_t) * PTRS_PER_PMD); - pud_populate(mm, pud, pmd); + pyd_populate(mm, pyd, pxd); } } pgd_t *pgd_alloc(struct mm_struct *mm) { pgd_t *pgd; - pmd_t *pmds[PREALLOCATED_PMDS]; + pxd_t *pxds[PREALLOCATED_PXDS]; + unsigned long flags; pgd = (pgd_t *)__get_free_page(PGALLOC_GFP); @@ -257,11 +320,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) mm->pgd = pgd; - if (preallocate_pmds(pmds) != 0) + if (preallocate_pxds(pxds) != 0) goto out_free_pgd; if (paravirt_pgd_alloc(mm) != 0) - goto out_free_pmds; + goto out_free_pxds; /* * Make sure that pre-populating the pmds is atomic with @@ -271,14 +334,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm) spin_lock_irqsave(&pgd_lock, flags); pgd_ctor(pgd); - pgd_prepopulate_pmd(mm, pgd, pmds); + pgd_prepopulate_pxd(mm, pgd, pxds); spin_unlock_irqrestore(&pgd_lock, flags); return pgd; -out_free_pmds: - free_pmds(pmds); +out_free_pxds: + free_pxds(pxds); out_free_pgd: free_page((unsigned long)pgd); out: @@ -287,7 +350,7 @@ out: void pgd_free(struct mm_struct *mm, pgd_t *pgd) { - pgd_mop_up_pmds(mm, pgd); + pgd_mop_up_pxds(mm, pgd); pgd_dtor(pgd); paravirt_pgd_free(mm, pgd); free_page((unsigned long)pgd); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/setup_nx.c linux-2.6.32.59-pax/arch/x86/mm/setup_nx.c --- linux-2.6.32.59/arch/x86/mm/setup_nx.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/setup_nx.c 2012-03-13 13:15:34.852098005 +0100 @@ -4,11 +4,10 @@ #include +#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE) int nx_enabled; -#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) -static int disable_nx __cpuinitdata; - +#ifndef CONFIG_PAX_PAGEEXEC /* * noexec = on|off * @@ -22,32 +21,26 @@ static int __init noexec_setup(char *str if (!str) return -EINVAL; if (!strncmp(str, "on", 2)) { - __supported_pte_mask |= _PAGE_NX; - disable_nx = 0; + nx_enabled = 1; } else if (!strncmp(str, "off", 3)) { - disable_nx = 1; - __supported_pte_mask &= ~_PAGE_NX; + nx_enabled = 0; } return 0; } early_param("noexec", noexec_setup); #endif +#endif #ifdef CONFIG_X86_PAE void __init set_nx(void) { - unsigned int v[4], l, h; + if (!nx_enabled && cpu_has_nx) { + unsigned l, h; - if (cpu_has_pae && (cpuid_eax(0x80000000) > 0x80000001)) { - cpuid(0x80000001, &v[0], &v[1], &v[2], &v[3]); - - if ((v[3] & (1 << 20)) && !disable_nx) { - rdmsr(MSR_EFER, l, h); - l |= EFER_NX; - wrmsr(MSR_EFER, l, h); - nx_enabled = 1; - __supported_pte_mask |= _PAGE_NX; - } + __supported_pte_mask &= ~_PAGE_NX; + rdmsr(MSR_EFER, l, h); + l &= ~EFER_NX; + wrmsr(MSR_EFER, l, h); } } #else @@ -62,7 +55,7 @@ void __cpuinit check_efer(void) unsigned long efer; rdmsrl(MSR_EFER, efer); - if (!(efer & EFER_NX) || disable_nx) + if (!(efer & EFER_NX) || !nx_enabled) __supported_pte_mask &= ~_PAGE_NX; } #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/mm/tlb.c linux-2.6.32.59-pax/arch/x86/mm/tlb.c --- linux-2.6.32.59/arch/x86/mm/tlb.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/mm/tlb.c 2012-03-13 13:15:34.852098005 +0100 @@ -61,7 +61,11 @@ void leave_mm(int cpu) BUG(); cpumask_clear_cpu(cpu, mm_cpumask(percpu_read(cpu_tlbstate.active_mm))); + +#ifndef CONFIG_PAX_PER_CPU_PGD load_cr3(swapper_pg_dir); +#endif + } EXPORT_SYMBOL_GPL(leave_mm); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/oprofile/backtrace.c linux-2.6.32.59-pax/arch/x86/oprofile/backtrace.c --- linux-2.6.32.59/arch/x86/oprofile/backtrace.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/oprofile/backtrace.c 2012-03-13 13:15:34.852098005 +0100 @@ -115,7 +115,7 @@ x86_backtrace(struct pt_regs * const reg { struct frame_head *head = (struct frame_head *)frame_pointer(regs); - if (!user_mode_vm(regs)) { + if (!user_mode(regs)) { unsigned long stack = kernel_stack_pointer(regs); if (depth) dump_trace(NULL, regs, (unsigned long *)stack, 0, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/oprofile/op_model_p4.c linux-2.6.32.59-pax/arch/x86/oprofile/op_model_p4.c --- linux-2.6.32.59/arch/x86/oprofile/op_model_p4.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/oprofile/op_model_p4.c 2012-03-13 13:15:34.856098005 +0100 @@ -50,7 +50,7 @@ static inline void setup_num_counters(vo #endif } -static int inline addr_increment(void) +static inline int addr_increment(void) { #ifdef CONFIG_SMP return smp_num_siblings == 2 ? 2 : 1; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/pci/pcbios.c linux-2.6.32.59-pax/arch/x86/pci/pcbios.c --- linux-2.6.32.59/arch/x86/pci/pcbios.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/pci/pcbios.c 2012-03-13 13:15:34.856098005 +0100 @@ -56,50 +56,93 @@ union bios32 { static struct { unsigned long address; unsigned short segment; -} bios32_indirect = { 0, __KERNEL_CS }; +} bios32_indirect __read_only = { 0, __PCIBIOS_CS }; /* * Returns the entry point for the given service, NULL on error */ -static unsigned long bios32_service(unsigned long service) +static unsigned long __devinit bios32_service(unsigned long service) { unsigned char return_code; /* %al */ unsigned long address; /* %ebx */ unsigned long length; /* %ecx */ unsigned long entry; /* %edx */ unsigned long flags; + struct desc_struct d, *gdt; local_irq_save(flags); - __asm__("lcall *(%%edi); cld" + + gdt = get_cpu_gdt_table(smp_processor_id()); + + pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x9B, 0xC); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); + pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x93, 0xC); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); + + __asm__("movw %w7, %%ds; lcall *(%%edi); push %%ss; pop %%ds; cld" : "=a" (return_code), "=b" (address), "=c" (length), "=d" (entry) : "0" (service), "1" (0), - "D" (&bios32_indirect)); + "D" (&bios32_indirect), + "r"(__PCIBIOS_DS) + : "memory"); + + pax_open_kernel(); + gdt[GDT_ENTRY_PCIBIOS_CS].a = 0; + gdt[GDT_ENTRY_PCIBIOS_CS].b = 0; + gdt[GDT_ENTRY_PCIBIOS_DS].a = 0; + gdt[GDT_ENTRY_PCIBIOS_DS].b = 0; + pax_close_kernel(); + local_irq_restore(flags); switch (return_code) { - case 0: - return address + entry; - case 0x80: /* Not present */ - printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); - return 0; - default: /* Shouldn't happen */ - printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", - service, return_code); + case 0: { + int cpu; + unsigned char flags; + + printk(KERN_INFO "bios32_service: base:%08lx length:%08lx entry:%08lx\n", address, length, entry); + if (address >= 0xFFFF0 || length > 0x100000 - address || length <= entry) { + printk(KERN_WARNING "bios32_service: not valid\n"); return 0; + } + address = address + PAGE_OFFSET; + length += 16UL; /* some BIOSs underreport this... */ + flags = 4; + if (length >= 64*1024*1024) { + length >>= PAGE_SHIFT; + flags |= 8; + } + + for (cpu = 0; cpu < nr_cpu_ids; cpu++) { + gdt = get_cpu_gdt_table(cpu); + pack_descriptor(&d, address, length, 0x9b, flags); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S); + pack_descriptor(&d, address, length, 0x93, flags); + write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S); + } + return entry; + } + case 0x80: /* Not present */ + printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service); + return 0; + default: /* Shouldn't happen */ + printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n", + service, return_code); + return 0; } } static struct { unsigned long address; unsigned short segment; -} pci_indirect = { 0, __KERNEL_CS }; +} pci_indirect __read_only = { 0, __PCIBIOS_CS }; -static int pci_bios_present; +static int pci_bios_present __read_only; static int __devinit check_pcibios(void) { @@ -108,11 +151,13 @@ static int __devinit check_pcibios(void) unsigned long flags, pcibios_entry; if ((pcibios_entry = bios32_service(PCI_SERVICE))) { - pci_indirect.address = pcibios_entry + PAGE_OFFSET; + pci_indirect.address = pcibios_entry; local_irq_save(flags); - __asm__( - "lcall *(%%edi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%edi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -121,7 +166,8 @@ static int __devinit check_pcibios(void) "=b" (ebx), "=c" (ecx) : "1" (PCIBIOS_PCI_BIOS_PRESENT), - "D" (&pci_indirect) + "D" (&pci_indirect), + "r" (__PCIBIOS_DS) : "memory"); local_irq_restore(flags); @@ -165,7 +211,10 @@ static int pci_bios_read(unsigned int se switch (len) { case 1: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -174,7 +223,8 @@ static int pci_bios_read(unsigned int se : "1" (PCIBIOS_READ_CONFIG_BYTE), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); /* * Zero-extend the result beyond 8 bits, do not trust the * BIOS having done it: @@ -182,7 +232,10 @@ static int pci_bios_read(unsigned int se *value &= 0xff; break; case 2: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -191,7 +244,8 @@ static int pci_bios_read(unsigned int se : "1" (PCIBIOS_READ_CONFIG_WORD), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); /* * Zero-extend the result beyond 16 bits, do not trust the * BIOS having done it: @@ -199,7 +253,10 @@ static int pci_bios_read(unsigned int se *value &= 0xffff; break; case 4: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -208,7 +265,8 @@ static int pci_bios_read(unsigned int se : "1" (PCIBIOS_READ_CONFIG_DWORD), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; } @@ -231,7 +289,10 @@ static int pci_bios_write(unsigned int s switch (len) { case 1: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -240,10 +301,14 @@ static int pci_bios_write(unsigned int s "c" (value), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; case 2: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -252,10 +317,14 @@ static int pci_bios_write(unsigned int s "c" (value), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; case 4: - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w6, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n\t" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -264,7 +333,8 @@ static int pci_bios_write(unsigned int s "c" (value), "b" (bx), "D" ((long)reg), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); break; } @@ -368,10 +438,13 @@ struct irq_routing_table * pcibios_get_i DBG("PCI: Fetching IRQ routing table... "); __asm__("push %%es\n\t" + "movw %w8, %%ds\n\t" "push %%ds\n\t" "pop %%es\n\t" - "lcall *(%%esi); cld\n\t" + "lcall *%%ss:(%%esi); cld\n\t" "pop %%es\n\t" + "push %%ss\n\t" + "pop %%ds\n" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -382,7 +455,8 @@ struct irq_routing_table * pcibios_get_i "1" (0), "D" ((long) &opt), "S" (&pci_indirect), - "m" (opt) + "m" (opt), + "r" (__PCIBIOS_DS) : "memory"); DBG("OK ret=%d, size=%d, map=%x\n", ret, opt.size, map); if (ret & 0xff00) @@ -406,7 +480,10 @@ int pcibios_set_irq_routing(struct pci_d { int ret; - __asm__("lcall *(%%esi); cld\n\t" + __asm__("movw %w5, %%ds\n\t" + "lcall *%%ss:(%%esi); cld\n\t" + "push %%ss\n\t" + "pop %%ds\n" "jc 1f\n\t" "xor %%ah, %%ah\n" "1:" @@ -414,7 +491,8 @@ int pcibios_set_irq_routing(struct pci_d : "0" (PCIBIOS_SET_PCI_HW_INT), "b" ((dev->bus->number << 8) | dev->devfn), "c" ((irq << 8) | (pin + 10)), - "S" (&pci_indirect)); + "S" (&pci_indirect), + "r" (__PCIBIOS_DS)); return !(ret & 0xff00); } EXPORT_SYMBOL(pcibios_set_irq_routing); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/power/cpu.c linux-2.6.32.59-pax/arch/x86/power/cpu.c --- linux-2.6.32.59/arch/x86/power/cpu.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/power/cpu.c 2012-03-13 13:15:34.856098005 +0100 @@ -129,7 +129,7 @@ static void do_fpu_end(void) static void fix_processor_context(void) { int cpu = smp_processor_id(); - struct tss_struct *t = &per_cpu(init_tss, cpu); + struct tss_struct *t = init_tss + cpu; set_tss_desc(cpu, t); /* * This just modifies memory; should not be @@ -139,7 +139,9 @@ static void fix_processor_context(void) */ #ifdef CONFIG_X86_64 + pax_open_kernel(); get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS].type = 9; + pax_close_kernel(); syscall_init(); /* This sets MSR_*STAR and related */ #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/vdso/Makefile linux-2.6.32.59-pax/arch/x86/vdso/Makefile --- linux-2.6.32.59/arch/x86/vdso/Makefile 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/vdso/Makefile 2012-03-13 13:15:34.856098005 +0100 @@ -122,7 +122,7 @@ quiet_cmd_vdso = VDSO $@ $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \ -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) -VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) +VDSO_LDFLAGS = -fPIC -shared -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) GCOV_PROFILE := n # diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/vdso/vclock_gettime.c linux-2.6.32.59-pax/arch/x86/vdso/vclock_gettime.c --- linux-2.6.32.59/arch/x86/vdso/vclock_gettime.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/vdso/vclock_gettime.c 2012-03-13 13:15:34.856098005 +0100 @@ -22,24 +22,48 @@ #include #include #include +#include #include "vextern.h" #define gtod vdso_vsyscall_gtod_data +notrace noinline long __vdso_fallback_time(long *t) +{ + long secs; + asm volatile("syscall" + : "=a" (secs) + : "0" (__NR_time),"D" (t) : "r11", "cx", "memory"); + return secs; +} + notrace static long vdso_fallback_gettime(long clock, struct timespec *ts) { long ret; asm("syscall" : "=a" (ret) : - "0" (__NR_clock_gettime),"D" (clock), "S" (ts) : "memory"); + "0" (__NR_clock_gettime),"D" (clock), "S" (ts) : "r11", "cx", "memory"); return ret; } +notrace static inline cycle_t __vdso_vread_hpet(void) +{ + return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + 0xf0); +} + +notrace static inline cycle_t __vdso_vread_tsc(void) +{ + cycle_t ret = (cycle_t)vget_cycles(); + + return ret >= gtod->clock.cycle_last ? ret : gtod->clock.cycle_last; +} + notrace static inline long vgetns(void) { long v; - cycles_t (*vread)(void); - vread = gtod->clock.vread; - v = (vread() - gtod->clock.cycle_last) & gtod->clock.mask; + if (gtod->clock.name[0] == 't' && gtod->clock.name[1] == 's' && gtod->clock.name[2] == 'c' && !gtod->clock.name[3]) + v = __vdso_vread_tsc(); + else + v = __vdso_vread_hpet(); + v = (v - gtod->clock.cycle_last) & gtod->clock.mask; return (v * gtod->clock.mult) >> gtod->clock.shift; } @@ -113,7 +137,9 @@ notrace static noinline int do_monotonic notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts) { - if (likely(gtod->sysctl_enabled)) + if (likely(gtod->sysctl_enabled && + ((gtod->clock.name[0] == 'h' && gtod->clock.name[1] == 'p' && gtod->clock.name[2] == 'e' && gtod->clock.name[3] == 't' && !gtod->clock.name[4]) || + (gtod->clock.name[0] == 't' && gtod->clock.name[1] == 's' && gtod->clock.name[2] == 'c' && !gtod->clock.name[3])))) switch (clock) { case CLOCK_REALTIME: if (likely(gtod->clock.vread)) @@ -133,10 +159,20 @@ notrace int __vdso_clock_gettime(clockid int clock_gettime(clockid_t, struct timespec *) __attribute__((weak, alias("__vdso_clock_gettime"))); -notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) +notrace noinline int __vdso_fallback_gettimeofday(struct timeval *tv, struct timezone *tz) { long ret; - if (likely(gtod->sysctl_enabled && gtod->clock.vread)) { + asm("syscall" : "=a" (ret) : + "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "r11", "cx", "memory"); + return ret; +} + +notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) +{ + if (likely(gtod->sysctl_enabled && + ((gtod->clock.name[0] == 'h' && gtod->clock.name[1] == 'p' && gtod->clock.name[2] == 'e' && gtod->clock.name[3] == 't' && !gtod->clock.name[4]) || + (gtod->clock.name[0] == 't' && gtod->clock.name[1] == 's' && gtod->clock.name[2] == 'c' && !gtod->clock.name[3])))) + { if (likely(tv != NULL)) { BUILD_BUG_ON(offsetof(struct timeval, tv_usec) != offsetof(struct timespec, tv_nsec) || @@ -151,9 +187,7 @@ notrace int __vdso_gettimeofday(struct t } return 0; } - asm("syscall" : "=a" (ret) : - "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory"); - return ret; + return __vdso_fallback_gettimeofday(tv, tz); } int gettimeofday(struct timeval *, struct timezone *) __attribute__((weak, alias("__vdso_gettimeofday"))); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/vdso/vdso32-setup.c linux-2.6.32.59-pax/arch/x86/vdso/vdso32-setup.c --- linux-2.6.32.59/arch/x86/vdso/vdso32-setup.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/vdso/vdso32-setup.c 2012-03-13 13:15:34.860098005 +0100 @@ -25,6 +25,7 @@ #include #include #include +#include enum { VDSO_DISABLED = 0, @@ -226,7 +227,7 @@ static inline void map_compat_vdso(int m void enable_sep_cpu(void) { int cpu = get_cpu(); - struct tss_struct *tss = &per_cpu(init_tss, cpu); + struct tss_struct *tss = init_tss + cpu; if (!boot_cpu_has(X86_FEATURE_SEP)) { put_cpu(); @@ -249,7 +250,7 @@ static int __init gate_vma_init(void) gate_vma.vm_start = FIXADDR_USER_START; gate_vma.vm_end = FIXADDR_USER_END; gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; - gate_vma.vm_page_prot = __P101; + gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags); /* * Make sure the vDSO gets into every core dump. * Dumping its contents makes post-mortem fully interpretable later @@ -331,14 +332,14 @@ int arch_setup_additional_pages(struct l if (compat) addr = VDSO_HIGH_BASE; else { - addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0); + addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, MAP_EXECUTABLE); if (IS_ERR_VALUE(addr)) { ret = addr; goto up_fail; } } - current->mm->context.vdso = (void *)addr; + current->mm->context.vdso = addr; if (compat_uses_vma || !compat) { /* @@ -361,11 +362,11 @@ int arch_setup_additional_pages(struct l } current_thread_info()->sysenter_return = - VDSO32_SYMBOL(addr, SYSENTER_RETURN); + (__force void __user *)VDSO32_SYMBOL(addr, SYSENTER_RETURN); up_fail: if (ret) - current->mm->context.vdso = NULL; + current->mm->context.vdso = 0; up_write(&mm->mmap_sem); @@ -413,8 +414,14 @@ __initcall(ia32_binfmt_init); const char *arch_vma_name(struct vm_area_struct *vma) { - if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso) + if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso) return "[vdso]"; + +#ifdef CONFIG_PAX_SEGMEXEC + if (vma->vm_mm && vma->vm_mirror && vma->vm_mirror->vm_start == vma->vm_mm->context.vdso) + return "[vdso]"; +#endif + return NULL; } @@ -423,7 +430,7 @@ struct vm_area_struct *get_gate_vma(stru struct mm_struct *mm = tsk->mm; /* Check to see if this task was created in compat vdso mode */ - if (mm && mm->context.vdso == (void *)VDSO_HIGH_BASE) + if (mm && mm->context.vdso == VDSO_HIGH_BASE) return &gate_vma; return NULL; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/vdso/vdso.lds.S linux-2.6.32.59-pax/arch/x86/vdso/vdso.lds.S --- linux-2.6.32.59/arch/x86/vdso/vdso.lds.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/vdso/vdso.lds.S 2012-03-13 13:15:34.860098005 +0100 @@ -35,3 +35,9 @@ VDSO64_PRELINK = VDSO_PRELINK; #define VEXTERN(x) VDSO64_ ## x = vdso_ ## x; #include "vextern.h" #undef VEXTERN + +#define VEXTERN(x) VDSO64_ ## x = __vdso_ ## x; +VEXTERN(fallback_gettimeofday) +VEXTERN(fallback_time) +VEXTERN(getcpu) +#undef VEXTERN diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/vdso/vextern.h linux-2.6.32.59-pax/arch/x86/vdso/vextern.h --- linux-2.6.32.59/arch/x86/vdso/vextern.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/vdso/vextern.h 2012-03-13 13:15:34.860098005 +0100 @@ -11,6 +11,5 @@ put into vextern.h and be referenced as a pointer with vdso prefix. The main kernel later fills in the values. */ -VEXTERN(jiffies) VEXTERN(vgetcpu_mode) VEXTERN(vsyscall_gtod_data) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/vdso/vma.c linux-2.6.32.59-pax/arch/x86/vdso/vma.c --- linux-2.6.32.59/arch/x86/vdso/vma.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/vdso/vma.c 2012-03-13 13:15:34.860098005 +0100 @@ -17,8 +17,6 @@ #include "vextern.h" /* Just for VMAGIC. */ #undef VEXTERN -unsigned int __read_mostly vdso_enabled = 1; - extern char vdso_start[], vdso_end[]; extern unsigned short vdso_sync_cpuid; @@ -27,10 +25,8 @@ static unsigned vdso_size; static inline void *var_ref(void *p, char *name) { - if (*(void **)p != (void *)VMAGIC) { - printk("VDSO: variable %s broken\n", name); - vdso_enabled = 0; - } + if (*(void **)p != (void *)VMAGIC) + panic("VDSO: variable %s broken\n", name); return p; } @@ -57,21 +53,18 @@ static int __init init_vdso_vars(void) if (!vbase) goto oom; - if (memcmp(vbase, "\177ELF", 4)) { - printk("VDSO: I'm broken; not ELF\n"); - vdso_enabled = 0; - } + if (memcmp(vbase, ELFMAG, SELFMAG)) + panic("VDSO: I'm broken; not ELF\n"); #define VEXTERN(x) \ *(typeof(__ ## x) **) var_ref(VDSO64_SYMBOL(vbase, x), #x) = &__ ## x; #include "vextern.h" #undef VEXTERN + vunmap(vbase); return 0; oom: - printk("Cannot allocate vdso\n"); - vdso_enabled = 0; - return -ENOMEM; + panic("Cannot allocate vdso\n"); } __initcall(init_vdso_vars); @@ -102,13 +95,15 @@ static unsigned long vdso_addr(unsigned int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) { struct mm_struct *mm = current->mm; - unsigned long addr; + unsigned long addr = 0; int ret; - if (!vdso_enabled) - return 0; - down_write(&mm->mmap_sem); + +#ifdef CONFIG_PAX_RANDMMAP + if (!(mm->pax_flags & MF_PAX_RANDMMAP)) +#endif + addr = vdso_addr(mm->start_stack, vdso_size); addr = get_unmapped_area(NULL, addr, vdso_size, 0, 0); if (IS_ERR_VALUE(addr)) { @@ -116,7 +111,7 @@ int arch_setup_additional_pages(struct l goto up_fail; } - current->mm->context.vdso = (void *)addr; + current->mm->context.vdso = addr; ret = install_special_mapping(mm, addr, vdso_size, VM_READ|VM_EXEC| @@ -124,7 +119,7 @@ int arch_setup_additional_pages(struct l VM_ALWAYSDUMP, vdso_pages); if (ret) { - current->mm->context.vdso = NULL; + current->mm->context.vdso = 0; goto up_fail; } @@ -132,10 +127,3 @@ up_fail: up_write(&mm->mmap_sem); return ret; } - -static __init int vdso_setup(char *s) -{ - vdso_enabled = simple_strtoul(s, NULL, 0); - return 0; -} -__setup("vdso=", vdso_setup); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/xen/enlighten.c linux-2.6.32.59-pax/arch/x86/xen/enlighten.c --- linux-2.6.32.59/arch/x86/xen/enlighten.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/xen/enlighten.c 2012-09-20 00:38:15.798660686 +0200 @@ -71,8 +71,6 @@ EXPORT_SYMBOL_GPL(xen_start_info); struct shared_info xen_dummy_shared_info; -void *xen_initial_gdt; - /* * Point at some empty memory to start with. We map the real shared_info * page as soon as fixmap is up and running. @@ -548,7 +546,7 @@ static void xen_write_idt_entry(gate_des preempt_disable(); - start = __get_cpu_var(idt_desc).address; + start = (unsigned long)__get_cpu_var(idt_desc).address; end = start + __get_cpu_var(idt_desc).size + 1; xen_mc_flush(); @@ -718,12 +716,12 @@ static u32 xen_safe_apic_wait_icr_idle(v static void set_xen_basic_apic_ops(void) { - apic->read = xen_apic_read; - apic->write = xen_apic_write; - apic->icr_read = xen_apic_icr_read; - apic->icr_write = xen_apic_icr_write; - apic->wait_icr_idle = xen_apic_wait_icr_idle; - apic->safe_wait_icr_idle = xen_safe_apic_wait_icr_idle; + *(void **)&apic->read = xen_apic_read; + *(void **)&apic->write = xen_apic_write; + *(void **)&apic->icr_read = xen_apic_icr_read; + *(void **)&apic->icr_write = xen_apic_icr_write; + *(void **)&apic->wait_icr_idle = xen_apic_wait_icr_idle; + *(void **)&apic->safe_wait_icr_idle = xen_safe_apic_wait_icr_idle; } #endif @@ -993,7 +991,7 @@ static const struct pv_apic_ops xen_apic #endif }; -static void xen_reboot(int reason) +static __noreturn void xen_reboot(int reason) { struct sched_shutdown r = { .reason = reason }; @@ -1001,17 +999,17 @@ static void xen_reboot(int reason) BUG(); } -static void xen_restart(char *msg) +static __noreturn void xen_restart(char *msg) { xen_reboot(SHUTDOWN_reboot); } -static void xen_emergency_restart(void) +static __noreturn void xen_emergency_restart(void) { xen_reboot(SHUTDOWN_reboot); } -static void xen_machine_halt(void) +static __noreturn void xen_machine_halt(void) { xen_reboot(SHUTDOWN_poweroff); } @@ -1095,9 +1093,20 @@ asmlinkage void __init xen_start_kernel( */ __userpte_alloc_gfp &= ~__GFP_HIGHMEM; -#ifdef CONFIG_X86_64 /* Work out if we support NX */ - check_efer(); +#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) + if ((cpuid_eax(0x80000000) & 0xffff0000) == 0x80000000 && + (cpuid_edx(0x80000001) & (1U << (X86_FEATURE_NX & 31)))) { + unsigned l, h; + +#ifdef CONFIG_X86_PAE + nx_enabled = 1; +#endif + __supported_pte_mask |= _PAGE_NX; + rdmsr(MSR_EFER, l, h); + l |= EFER_NX; + wrmsr(MSR_EFER, l, h); + } #endif xen_setup_features(); @@ -1129,13 +1138,6 @@ asmlinkage void __init xen_start_kernel( machine_ops = xen_machine_ops; - /* - * The only reliable way to retain the initial address of the - * percpu gdt_page is to remember it here, so we can go and - * mark it RW later, when the initial percpu area is freed. - */ - xen_initial_gdt = &per_cpu(gdt_page, 0); - xen_smp_init(); pgd = (pgd_t *)xen_start_info->pt_base; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/xen/mmu.c linux-2.6.32.59-pax/arch/x86/xen/mmu.c --- linux-2.6.32.59/arch/x86/xen/mmu.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/xen/mmu.c 2012-03-13 13:15:34.864098004 +0100 @@ -1719,6 +1719,9 @@ __init pgd_t *xen_setup_kernel_pagetable convert_pfn_mfn(init_level4_pgt); convert_pfn_mfn(level3_ident_pgt); convert_pfn_mfn(level3_kernel_pgt); + convert_pfn_mfn(level3_vmalloc_start_pgt); + convert_pfn_mfn(level3_vmalloc_end_pgt); + convert_pfn_mfn(level3_vmemmap_pgt); l3 = m2v(pgd[pgd_index(__START_KERNEL_map)].pgd); l2 = m2v(l3[pud_index(__START_KERNEL_map)].pud); @@ -1737,7 +1740,11 @@ __init pgd_t *xen_setup_kernel_pagetable set_page_prot(init_level4_pgt, PAGE_KERNEL_RO); set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO); set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_vmalloc_start_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_vmalloc_end_pgt, PAGE_KERNEL_RO); + set_page_prot(level3_vmemmap_pgt, PAGE_KERNEL_RO); set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO); + set_page_prot(level2_vmemmap_pgt, PAGE_KERNEL_RO); set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO); set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO); @@ -1860,6 +1867,7 @@ static __init void xen_post_allocator_in pv_mmu_ops.set_pud = xen_set_pud; #if PAGETABLE_LEVELS == 4 pv_mmu_ops.set_pgd = xen_set_pgd; + pv_mmu_ops.set_pgd_batched = xen_set_pgd; #endif /* This will work as long as patching hasn't happened yet @@ -1946,6 +1954,7 @@ static const struct pv_mmu_ops xen_mmu_o .pud_val = PV_CALLEE_SAVE(xen_pud_val), .make_pud = PV_CALLEE_SAVE(xen_make_pud), .set_pgd = xen_set_pgd_hyper, + .set_pgd_batched = xen_set_pgd_hyper, .alloc_pud = xen_alloc_pmd_init, .release_pud = xen_release_pmd_init, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/xen/smp.c linux-2.6.32.59-pax/arch/x86/xen/smp.c --- linux-2.6.32.59/arch/x86/xen/smp.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/xen/smp.c 2012-03-13 13:15:34.864098004 +0100 @@ -168,11 +168,6 @@ static void __init xen_smp_prepare_boot_ { BUG_ON(smp_processor_id() != 0); native_smp_prepare_boot_cpu(); - - /* We've switched to the "real" per-cpu gdt, so make sure the - old memory can be recycled */ - make_lowmem_page_readwrite(xen_initial_gdt); - xen_setup_vcpu_info_placement(); } @@ -241,12 +236,12 @@ cpu_initialize_context(unsigned int cpu, gdt = get_cpu_gdt_table(cpu); ctxt->flags = VGCF_IN_KERNEL; - ctxt->user_regs.ds = __USER_DS; - ctxt->user_regs.es = __USER_DS; + ctxt->user_regs.ds = __KERNEL_DS; + ctxt->user_regs.es = __KERNEL_DS; ctxt->user_regs.ss = __KERNEL_DS; #ifdef CONFIG_X86_32 ctxt->user_regs.fs = __KERNEL_PERCPU; - ctxt->user_regs.gs = __KERNEL_STACK_CANARY; + savesegment(gs, ctxt->user_regs.gs); #else ctxt->gs_base_kernel = per_cpu_offset(cpu); #endif @@ -297,13 +292,12 @@ static int __cpuinit xen_cpu_up(unsigned int rc; per_cpu(current_task, cpu) = idle; + per_cpu(current_tinfo, cpu) = &idle->tinfo; #ifdef CONFIG_X86_32 irq_ctx_init(cpu); #else clear_tsk_thread_flag(idle, TIF_FORK); - per_cpu(kernel_stack, cpu) = - (unsigned long)task_stack_page(idle) - - KERNEL_STACK_OFFSET + THREAD_SIZE; + per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE; #endif xen_setup_runstate_info(cpu); xen_setup_timer(cpu); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/xen/xen-asm_32.S linux-2.6.32.59-pax/arch/x86/xen/xen-asm_32.S --- linux-2.6.32.59/arch/x86/xen/xen-asm_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/xen/xen-asm_32.S 2012-03-13 13:15:34.864098004 +0100 @@ -83,14 +83,14 @@ ENTRY(xen_iret) ESP_OFFSET=4 # bytes pushed onto stack /* - * Store vcpu_info pointer for easy access. Do it this way to - * avoid having to reload %fs + * Store vcpu_info pointer for easy access. */ #ifdef CONFIG_SMP - GET_THREAD_INFO(%eax) - movl TI_cpu(%eax), %eax - movl __per_cpu_offset(,%eax,4), %eax - mov per_cpu__xen_vcpu(%eax), %eax + push %fs + mov $(__KERNEL_PERCPU), %eax + mov %eax, %fs + mov PER_CPU_VAR(xen_vcpu), %eax + pop %fs #else movl per_cpu__xen_vcpu, %eax #endif diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/xen/xen-head.S linux-2.6.32.59-pax/arch/x86/xen/xen-head.S --- linux-2.6.32.59/arch/x86/xen/xen-head.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/xen/xen-head.S 2012-03-13 13:15:34.868098004 +0100 @@ -19,6 +19,17 @@ ENTRY(startup_xen) #ifdef CONFIG_X86_32 mov %esi,xen_start_info mov $init_thread_union+THREAD_SIZE,%esp +#ifdef CONFIG_SMP + movl $cpu_gdt_table,%edi + movl $__per_cpu_load,%eax + movw %ax,__KERNEL_PERCPU + 2(%edi) + rorl $16,%eax + movb %al,__KERNEL_PERCPU + 4(%edi) + movb %ah,__KERNEL_PERCPU + 7(%edi) + movl $__per_cpu_end - 1,%eax + subl $__per_cpu_start,%eax + movw %ax,__KERNEL_PERCPU + 0(%edi) +#endif #else mov %rsi,xen_start_info mov $init_thread_union+THREAD_SIZE,%rsp diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/arch/x86/xen/xen-ops.h linux-2.6.32.59-pax/arch/x86/xen/xen-ops.h --- linux-2.6.32.59/arch/x86/xen/xen-ops.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/arch/x86/xen/xen-ops.h 2012-03-13 13:15:34.868098004 +0100 @@ -10,8 +10,6 @@ extern const char xen_hypervisor_callback[]; extern const char xen_failsafe_callback[]; -extern void *xen_initial_gdt; - struct trap_info; void xen_copy_trap_info(struct trap_info *traps); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/block/blk-iopoll.c linux-2.6.32.59-pax/block/blk-iopoll.c --- linux-2.6.32.59/block/blk-iopoll.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/block/blk-iopoll.c 2012-03-13 13:15:34.868098004 +0100 @@ -77,7 +77,7 @@ void blk_iopoll_complete(struct blk_iopo } EXPORT_SYMBOL(blk_iopoll_complete); -static void blk_iopoll_softirq(struct softirq_action *h) +static void blk_iopoll_softirq(void) { struct list_head *list = &__get_cpu_var(blk_cpu_iopoll); int rearm = 0, budget = blk_iopoll_budget; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/block/blk-map.c linux-2.6.32.59-pax/block/blk-map.c --- linux-2.6.32.59/block/blk-map.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/block/blk-map.c 2012-03-13 13:15:34.868098004 +0100 @@ -54,7 +54,7 @@ static int __blk_rq_map_user(struct requ * direct dma. else, set up kernel bounce buffers */ uaddr = (unsigned long) ubuf; - if (blk_rq_aligned(q, ubuf, len) && !map_data) + if (blk_rq_aligned(q, (__force void *)ubuf, len) && !map_data) bio = bio_map_user(q, NULL, uaddr, len, reading, gfp_mask); else bio = bio_copy_user(q, map_data, uaddr, len, reading, gfp_mask); @@ -201,12 +201,13 @@ int blk_rq_map_user_iov(struct request_q for (i = 0; i < iov_count; i++) { unsigned long uaddr = (unsigned long)iov[i].iov_base; + if (!iov[i].iov_len) + return -EINVAL; + if (uaddr & queue_dma_alignment(q)) { unaligned = 1; break; } - if (!iov[i].iov_len) - return -EINVAL; } if (unaligned || (q->dma_pad_mask & len) || map_data) @@ -299,7 +300,7 @@ int blk_rq_map_kern(struct request_queue if (!len || !kbuf) return -EINVAL; - do_copy = !blk_rq_aligned(q, kbuf, len) || object_is_on_stack(kbuf); + do_copy = !blk_rq_aligned(q, kbuf, len) || object_starts_on_stack(kbuf); if (do_copy) bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading); else diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/block/blk-softirq.c linux-2.6.32.59-pax/block/blk-softirq.c --- linux-2.6.32.59/block/blk-softirq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/block/blk-softirq.c 2012-03-13 13:15:34.868098004 +0100 @@ -17,7 +17,7 @@ static DEFINE_PER_CPU(struct list_head, * Softirq action handler - move entries to local list and loop over them * while passing them to the queue registered handler. */ -static void blk_done_softirq(struct softirq_action *h) +static void blk_done_softirq(void) { struct list_head *cpu_list, local_list; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/block/bsg.c linux-2.6.32.59-pax/block/bsg.c --- linux-2.6.32.59/block/bsg.c 2012-03-18 17:44:12.472058990 +0100 +++ linux-2.6.32.59-pax/block/bsg.c 2012-03-18 17:44:18.424057492 +0100 @@ -175,16 +175,24 @@ static int blk_fill_sgv4_hdr_rq(struct r struct sg_io_v4 *hdr, struct bsg_device *bd, fmode_t has_write_perm) { + unsigned char tmpcmd[sizeof(rq->__cmd)]; + unsigned char *cmdptr; + if (hdr->request_len > BLK_MAX_CDB) { rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL); if (!rq->cmd) return -ENOMEM; - } + cmdptr = rq->cmd; + } else + cmdptr = tmpcmd; - if (copy_from_user(rq->cmd, (void *)(unsigned long)hdr->request, + if (copy_from_user(cmdptr, (void __user *)(unsigned long)hdr->request, hdr->request_len)) return -EFAULT; + if (cmdptr != rq->cmd) + memcpy(rq->cmd, cmdptr, hdr->request_len); + if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) { if (blk_verify_command(rq->cmd, has_write_perm)) return -EPERM; @@ -282,7 +290,7 @@ bsg_map_hdr(struct bsg_device *bd, struc rq->next_rq = next_rq; next_rq->cmd_type = rq->cmd_type; - dxferp = (void*)(unsigned long)hdr->din_xferp; + dxferp = (void __user *)(unsigned long)hdr->din_xferp; ret = blk_rq_map_user(q, next_rq, NULL, dxferp, hdr->din_xfer_len, GFP_KERNEL); if (ret) @@ -291,10 +299,10 @@ bsg_map_hdr(struct bsg_device *bd, struc if (hdr->dout_xfer_len) { dxfer_len = hdr->dout_xfer_len; - dxferp = (void*)(unsigned long)hdr->dout_xferp; + dxferp = (void __user *)(unsigned long)hdr->dout_xferp; } else if (hdr->din_xfer_len) { dxfer_len = hdr->din_xfer_len; - dxferp = (void*)(unsigned long)hdr->din_xferp; + dxferp = (void __user *)(unsigned long)hdr->din_xferp; } else dxfer_len = 0; @@ -436,7 +444,7 @@ static int blk_complete_sgv4_hdr_rq(stru int len = min_t(unsigned int, hdr->max_response_len, rq->sense_len); - ret = copy_to_user((void*)(unsigned long)hdr->response, + ret = copy_to_user((void __user *)(unsigned long)hdr->response, rq->sense, len); if (!ret) hdr->response_len = len; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/block/compat_ioctl.c linux-2.6.32.59-pax/block/compat_ioctl.c --- linux-2.6.32.59/block/compat_ioctl.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/block/compat_ioctl.c 2012-03-13 13:15:34.872098004 +0100 @@ -354,7 +354,7 @@ static int compat_fd_ioctl(struct block_ err |= __get_user(f->spec1, &uf->spec1); err |= __get_user(f->fmt_gap, &uf->fmt_gap); err |= __get_user(name, &uf->name); - f->name = compat_ptr(name); + f->name = (void __force_kernel *)compat_ptr(name); if (err) { err = -EFAULT; goto out; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/block/scsi_ioctl.c linux-2.6.32.59-pax/block/scsi_ioctl.c --- linux-2.6.32.59/block/scsi_ioctl.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/block/scsi_ioctl.c 2012-03-13 13:15:34.872098004 +0100 @@ -221,8 +221,20 @@ EXPORT_SYMBOL(blk_verify_command); static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq, struct sg_io_hdr *hdr, fmode_t mode) { - if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len)) + unsigned char tmpcmd[sizeof(rq->__cmd)]; + unsigned char *cmdptr; + + if (rq->cmd != rq->__cmd) + cmdptr = rq->cmd; + else + cmdptr = tmpcmd; + + if (copy_from_user(cmdptr, hdr->cmdp, hdr->cmd_len)) return -EFAULT; + + if (cmdptr != rq->cmd) + memcpy(rq->cmd, cmdptr, hdr->cmd_len); + if (blk_verify_command(rq->cmd, mode & FMODE_WRITE)) return -EPERM; @@ -431,6 +443,8 @@ int sg_scsi_ioctl(struct request_queue * int err; unsigned int in_len, out_len, bytes, opcode, cmdlen; char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE]; + unsigned char tmpcmd[sizeof(rq->__cmd)]; + unsigned char *cmdptr; if (!sic) return -EINVAL; @@ -464,9 +478,18 @@ int sg_scsi_ioctl(struct request_queue * */ err = -EFAULT; rq->cmd_len = cmdlen; - if (copy_from_user(rq->cmd, sic->data, cmdlen)) + + if (rq->cmd != rq->__cmd) + cmdptr = rq->cmd; + else + cmdptr = tmpcmd; + + if (copy_from_user(cmdptr, sic->data, cmdlen)) goto error; + if (rq->cmd != cmdptr) + memcpy(rq->cmd, cmdptr, cmdlen); + if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len)) goto error; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/crypto/cryptd.c linux-2.6.32.59-pax/crypto/cryptd.c --- linux-2.6.32.59/crypto/cryptd.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/crypto/cryptd.c 2012-03-13 13:15:34.872098004 +0100 @@ -50,7 +50,7 @@ struct cryptd_blkcipher_ctx { struct cryptd_blkcipher_request_ctx { crypto_completion_t complete; -}; +} __no_const; struct cryptd_hash_ctx { struct crypto_shash *child; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/crypto/gf128mul.c linux-2.6.32.59-pax/crypto/gf128mul.c --- linux-2.6.32.59/crypto/gf128mul.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/crypto/gf128mul.c 2012-03-13 13:15:34.876098004 +0100 @@ -182,7 +182,7 @@ void gf128mul_lle(be128 *r, const be128 for (i = 0; i < 7; ++i) gf128mul_x_lle(&p[i + 1], &p[i]); - memset(r, 0, sizeof(r)); + memset(r, 0, sizeof(*r)); for (i = 0;;) { u8 ch = ((u8 *)b)[15 - i]; @@ -220,7 +220,7 @@ void gf128mul_bbe(be128 *r, const be128 for (i = 0; i < 7; ++i) gf128mul_x_bbe(&p[i + 1], &p[i]); - memset(r, 0, sizeof(r)); + memset(r, 0, sizeof(*r)); for (i = 0;;) { u8 ch = ((u8 *)b)[i]; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/Documentation/dontdiff linux-2.6.32.59-pax/Documentation/dontdiff --- linux-2.6.32.59/Documentation/dontdiff 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/Documentation/dontdiff 2012-07-21 11:15:46.713044483 +0200 @@ -1,15 +1,20 @@ *.a *.aux *.bin +*.c.[012].* +*.cis *.cpio *.csp +*.dbg *.dsp *.dvi *.elf *.eps *.fw +*.gcno *.gen.S *.gif +*.gmo *.grep *.grp *.gz @@ -38,22 +43,30 @@ *.tab.h *.tex *.ver +*.vim *.xml *_MODULES +*_reg_safe.h *_vga16.c *~ *.9 *.9.gz -.* +.[^g]* +.gen* .mm 53c700_d.h CVS ChangeSet +GPATH +GRTAGS +GSYMS +GTAGS Image Kerntypes Module.markers Module.symvers PENDING +PERF* SCCS System.map* TAGS @@ -62,6 +75,7 @@ aic7*reg_print.c* aic7*seq.h* aicasm aicdb.h* +ashldi3.S asm-offsets.h asm_offsets.h autoconf.h* @@ -76,7 +90,11 @@ btfixupprep build bvmlinux bzImage* +capability_names.h +capflags.c classlist.h* +clut_vga16.c +common-cmds.h comp*.log compile.h* conf @@ -84,6 +102,8 @@ config config-* config_data.h* config_data.gz* +config.c +config.tmp conmakehash consolemap_deftbl.c* cpustr.h @@ -103,13 +123,16 @@ gen_crc32table gen_init_cpio genksyms *_gray256.c +hash +hid-example ihex2fw ikconfig.h* initramfs_data.cpio +initramfs_data.cpio.bz2 initramfs_data.cpio.gz initramfs_list kallsyms -kconfig +kern_constants.h keywords.c ksym.c* ksym.h* @@ -117,6 +140,7 @@ kxgettext lkc_defs.h lex.c lex.*.c +lib1funcs.S logo_*.c logo_*_clut224.c logo_*_mono.c @@ -127,13 +151,16 @@ machtypes.h map maui_boot.h mconf +mdp miboot* mk_elfconfig mkboot mkbugboot mkcpustr mkdep +mkpiggy mkprep +mkregtable mktables mktree modpost @@ -149,6 +176,7 @@ patches* pca200e.bin pca200e_ecd.bin2 piggy.gz +piggy.S piggyback pnmtologo ppc_defs.h* @@ -157,12 +185,16 @@ qconf raid6altivec*.c raid6int*.c raid6tables.c +regdb.c relocs +rlim_names.h series setup setup.bin setup.elf +size_overflow_hash.h sImage +slabinfo sm_tbl* split-include syscalltab.h @@ -171,6 +203,7 @@ tftpboot.img timeconst.h times.h* trix_boot.h +user_constants.h utsrelease.h* vdso-syms.lds vdso.lds @@ -186,14 +219,20 @@ version.h* vmlinux vmlinux-* vmlinux.aout +vmlinux.bin.all +vmlinux.bin.bz2 vmlinux.lds +vmlinux.relocs +voffset.h vsyscall.lds vsyscall_32.lds wanxlfw.inc uImage unifdef +utsrelease.h wakeup.bin wakeup.elf wakeup.lds zImage* zconf.hash.c +zoffset.h diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/Documentation/kernel-parameters.txt linux-2.6.32.59-pax/Documentation/kernel-parameters.txt --- linux-2.6.32.59/Documentation/kernel-parameters.txt 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/Documentation/kernel-parameters.txt 2012-03-13 13:15:34.876098004 +0100 @@ -1837,6 +1837,13 @@ and is between 256 and 4096 characters. the specified number of seconds. This is to be used if your oopses keep scrolling off the screen. + pax_nouderef [X86] disables UDEREF. Most likely needed under certain + virtualization environments that don't cope well with the + expand down segment used by UDEREF on X86-32 or the frequent + page table updates on X86-64. + + pax_softmode= 0/1 to disable/enable PaX softmode on boot already. + pcbit= [HW,ISDN] pcd. [PARIDE] diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/acpi/acpi_pad.c linux-2.6.32.59-pax/drivers/acpi/acpi_pad.c --- linux-2.6.32.59/drivers/acpi/acpi_pad.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/acpi/acpi_pad.c 2012-03-13 13:15:34.880098003 +0100 @@ -30,7 +30,7 @@ #include #include -#define ACPI_PROCESSOR_AGGREGATOR_CLASS "processor_aggregator" +#define ACPI_PROCESSOR_AGGREGATOR_CLASS "acpi_pad" #define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator" #define ACPI_PROCESSOR_AGGREGATOR_NOTIFY 0x80 static DEFINE_MUTEX(isolated_cpus_lock); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/acpi/osl.c linux-2.6.32.59-pax/drivers/acpi/osl.c --- linux-2.6.32.59/drivers/acpi/osl.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/acpi/osl.c 2012-03-13 13:15:34.884098003 +0100 @@ -523,6 +523,8 @@ acpi_os_read_memory(acpi_physical_addres void __iomem *virt_addr; virt_addr = ioremap(phys_addr, width); + if (!virt_addr) + return AE_NO_MEMORY; if (!value) value = &dummy; @@ -551,6 +553,8 @@ acpi_os_write_memory(acpi_physical_addre void __iomem *virt_addr; virt_addr = ioremap(phys_addr, width); + if (!virt_addr) + return AE_NO_MEMORY; switch (width) { case 8: diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/acpi/power_meter.c linux-2.6.32.59-pax/drivers/acpi/power_meter.c --- linux-2.6.32.59/drivers/acpi/power_meter.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/acpi/power_meter.c 2012-03-13 13:15:34.888098003 +0100 @@ -315,8 +315,6 @@ static ssize_t set_trip(struct device *d return res; temp /= 1000; - if (temp < 0) - return -EINVAL; mutex_lock(&resource->lock); resource->trip[attr->index - 7] = temp; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/acpi/proc.c linux-2.6.32.59-pax/drivers/acpi/proc.c --- linux-2.6.32.59/drivers/acpi/proc.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/acpi/proc.c 2012-03-13 13:15:34.892098003 +0100 @@ -391,20 +391,15 @@ acpi_system_write_wakeup_device(struct f size_t count, loff_t * ppos) { struct list_head *node, *next; - char strbuf[5]; - char str[5] = ""; - unsigned int len = count; + char strbuf[5] = {0}; struct acpi_device *found_dev = NULL; - if (len > 4) - len = 4; - if (len < 0) - return -EFAULT; + if (count > 4) + count = 4; - if (copy_from_user(strbuf, buffer, len)) + if (copy_from_user(strbuf, buffer, count)) return -EFAULT; - strbuf[len] = '\0'; - sscanf(strbuf, "%s", str); + strbuf[count] = '\0'; mutex_lock(&acpi_device_lock); list_for_each_safe(node, next, &acpi_wakeup_device_list) { @@ -413,7 +408,7 @@ acpi_system_write_wakeup_device(struct f if (!dev->wakeup.flags.valid) continue; - if (!strncmp(dev->pnp.bus_id, str, 4)) { + if (!strncmp(dev->pnp.bus_id, strbuf, 4)) { dev->wakeup.state.enabled = dev->wakeup.state.enabled ? 0 : 1; found_dev = dev; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/acpi/processor_core.c linux-2.6.32.59-pax/drivers/acpi/processor_core.c --- linux-2.6.32.59/drivers/acpi/processor_core.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/acpi/processor_core.c 2012-03-13 13:15:34.892098003 +0100 @@ -790,7 +790,7 @@ static int __cpuinit acpi_processor_add( return 0; } - BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0)); + BUG_ON(pr->id >= nr_cpu_ids); /* * Buggy BIOS check diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/acpi/sbshc.c linux-2.6.32.59-pax/drivers/acpi/sbshc.c --- linux-2.6.32.59/drivers/acpi/sbshc.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/acpi/sbshc.c 2012-03-13 13:15:34.892098003 +0100 @@ -17,7 +17,7 @@ #define PREFIX "ACPI: " -#define ACPI_SMB_HC_CLASS "smbus_host_controller" +#define ACPI_SMB_HC_CLASS "smbus_host_ctl" #define ACPI_SMB_HC_DEVICE_NAME "ACPI SMBus HC" struct acpi_smb_hc { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ata/libata-core.c linux-2.6.32.59-pax/drivers/ata/libata-core.c --- linux-2.6.32.59/drivers/ata/libata-core.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ata/libata-core.c 2012-03-13 13:15:34.896098003 +0100 @@ -4954,7 +4954,7 @@ void ata_qc_free(struct ata_queued_cmd * struct ata_port *ap; unsigned int tag; - WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ ap = qc->ap; qc->flags = 0; @@ -4970,7 +4970,7 @@ void __ata_qc_complete(struct ata_queued struct ata_port *ap; struct ata_link *link; - WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); ap = qc->ap; link = qc->dev->link; @@ -5999,6 +5999,7 @@ static void ata_finalize_port_ops(struct return; spin_lock(&lock); + pax_open_kernel(); for (cur = ops->inherits; cur; cur = cur->inherits) { void **inherit = (void **)cur; @@ -6012,8 +6013,9 @@ static void ata_finalize_port_ops(struct if (IS_ERR(*pp)) *pp = NULL; - ops->inherits = NULL; + *(struct ata_port_operations **)&ops->inherits = NULL; + pax_close_kernel(); spin_unlock(&lock); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/adummy.c linux-2.6.32.59-pax/drivers/atm/adummy.c --- linux-2.6.32.59/drivers/atm/adummy.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/adummy.c 2012-03-13 13:15:34.896098003 +0100 @@ -77,7 +77,7 @@ adummy_send(struct atm_vcc *vcc, struct vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/ambassador.c linux-2.6.32.59-pax/drivers/atm/ambassador.c --- linux-2.6.32.59/drivers/atm/ambassador.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/ambassador.c 2012-03-13 13:15:34.900098002 +0100 @@ -453,7 +453,7 @@ static void tx_complete (amb_dev * dev, PRINTD (DBG_FLOW|DBG_TX, "tx_complete %p %p", dev, tx); // VC layer stats - atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); + atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); // free the descriptor kfree (tx_descr); @@ -494,7 +494,7 @@ static void rx_complete (amb_dev * dev, dump_skb ("<<<", vc, skb); // VC layer stats - atomic_inc(&atm_vcc->stats->rx); + atomic_inc_unchecked(&atm_vcc->stats->rx); __net_timestamp(skb); // end of our responsability atm_vcc->push (atm_vcc, skb); @@ -509,7 +509,7 @@ static void rx_complete (amb_dev * dev, } else { PRINTK (KERN_INFO, "dropped over-size frame"); // should we count this? - atomic_inc(&atm_vcc->stats->rx_drop); + atomic_inc_unchecked(&atm_vcc->stats->rx_drop); } } else { @@ -1341,7 +1341,7 @@ static int amb_send (struct atm_vcc * at } if (check_area (skb->data, skb->len)) { - atomic_inc(&atm_vcc->stats->tx_err); + atomic_inc_unchecked(&atm_vcc->stats->tx_err); return -ENOMEM; // ? } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/atmtcp.c linux-2.6.32.59-pax/drivers/atm/atmtcp.c --- linux-2.6.32.59/drivers/atm/atmtcp.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/atmtcp.c 2012-03-13 13:15:34.900098002 +0100 @@ -206,7 +206,7 @@ static int atmtcp_v_send(struct atm_vcc if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); if (dev_data) return 0; - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -ENOLINK; } size = skb->len+sizeof(struct atmtcp_hdr); @@ -214,7 +214,7 @@ static int atmtcp_v_send(struct atm_vcc if (!new_skb) { if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -ENOBUFS; } hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr)); @@ -225,8 +225,8 @@ static int atmtcp_v_send(struct atm_vcc if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); out_vcc->push(out_vcc,new_skb); - atomic_inc(&vcc->stats->tx); - atomic_inc(&out_vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->tx); + atomic_inc_unchecked(&out_vcc->stats->rx); return 0; } @@ -300,7 +300,7 @@ static int atmtcp_c_send(struct atm_vcc out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci)); read_unlock(&vcc_sklist_lock); if (!out_vcc) { - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); goto done; } skb_pull(skb,sizeof(struct atmtcp_hdr)); @@ -312,8 +312,8 @@ static int atmtcp_c_send(struct atm_vcc __net_timestamp(new_skb); skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len); out_vcc->push(out_vcc,new_skb); - atomic_inc(&vcc->stats->tx); - atomic_inc(&out_vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->tx); + atomic_inc_unchecked(&out_vcc->stats->rx); done: if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb(skb); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/eni.c linux-2.6.32.59-pax/drivers/atm/eni.c --- linux-2.6.32.59/drivers/atm/eni.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/eni.c 2012-03-13 13:15:34.900098002 +0100 @@ -525,7 +525,7 @@ static int rx_aal0(struct atm_vcc *vcc) DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n", vcc->dev->number); length = 0; - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } else { length = ATM_CELL_SIZE-1; /* no HEC */ @@ -580,7 +580,7 @@ static int rx_aal5(struct atm_vcc *vcc) size); } eff = length = 0; - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } else { size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2); @@ -597,7 +597,7 @@ static int rx_aal5(struct atm_vcc *vcc) "(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n", vcc->dev->number,vcc->vci,length,size << 2,descr); length = eff = 0; - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } } skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL; @@ -770,7 +770,7 @@ rx_dequeued++; vcc->push(vcc,skb); pushed++; } - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } wake_up(&eni_dev->rx_wait); } @@ -1227,7 +1227,7 @@ static void dequeue_tx(struct atm_dev *d PCI_DMA_TODEVICE); if (vcc->pop) vcc->pop(vcc,skb); else dev_kfree_skb_irq(skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); wake_up(&eni_dev->tx_wait); dma_complete++; } @@ -1570,7 +1570,7 @@ tx_complete++; /*--------------------------------- entries ---------------------------------*/ -static const char *media_name[] __devinitdata = { +static const char *media_name[] __devinitconst = { "MMF", "SMF", "MMF", "03?", /* 0- 3 */ "UTP", "05?", "06?", "07?", /* 4- 7 */ "TAXI","09?", "10?", "11?", /* 8-11 */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/firestream.c linux-2.6.32.59-pax/drivers/atm/firestream.c --- linux-2.6.32.59/drivers/atm/firestream.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/firestream.c 2012-03-13 13:15:34.904098002 +0100 @@ -748,7 +748,7 @@ static void process_txdone_queue (struct } } - atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); + atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); fs_dprintk (FS_DEBUG_TXMEM, "i"); fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb); @@ -815,7 +815,7 @@ static void process_incoming (struct fs_ #endif skb_put (skb, qe->p1 & 0xffff); ATM_SKB(skb)->vcc = atm_vcc; - atomic_inc(&atm_vcc->stats->rx); + atomic_inc_unchecked(&atm_vcc->stats->rx); __net_timestamp(skb); fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb); atm_vcc->push (atm_vcc, skb); @@ -836,12 +836,12 @@ static void process_incoming (struct fs_ kfree (pe); } if (atm_vcc) - atomic_inc(&atm_vcc->stats->rx_drop); + atomic_inc_unchecked(&atm_vcc->stats->rx_drop); break; case 0x1f: /* Reassembly abort: no buffers. */ /* Silently increment error counter. */ if (atm_vcc) - atomic_inc(&atm_vcc->stats->rx_drop); + atomic_inc_unchecked(&atm_vcc->stats->rx_drop); break; default: /* Hmm. Haven't written the code to handle the others yet... -- REW */ printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n", diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/fore200e.c linux-2.6.32.59-pax/drivers/atm/fore200e.c --- linux-2.6.32.59/drivers/atm/fore200e.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/fore200e.c 2012-03-13 13:15:34.904098002 +0100 @@ -931,9 +931,9 @@ fore200e_tx_irq(struct fore200e* fore200 #endif /* check error condition */ if (*entry->status & STATUS_ERROR) - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); else - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); } } @@ -1082,7 +1082,7 @@ fore200e_push_rpd(struct fore200e* fore2 if (skb == NULL) { DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); return -ENOMEM; } @@ -1125,14 +1125,14 @@ fore200e_push_rpd(struct fore200e* fore2 dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); return -ENOMEM; } ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0); @@ -1210,7 +1210,7 @@ fore200e_rx_irq(struct fore200e* fore200 DPRINTK(2, "damaged PDU on %d.%d.%d\n", fore200e->atm_dev->number, entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); } } @@ -1655,7 +1655,7 @@ fore200e_send(struct atm_vcc *vcc, struc goto retry_here; } - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); fore200e->tx_sat++; DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n", diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/he.c linux-2.6.32.59-pax/drivers/atm/he.c --- linux-2.6.32.59/drivers/atm/he.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/he.c 2012-03-13 13:15:34.908098002 +0100 @@ -1769,7 +1769,7 @@ he_service_rbrq(struct he_dev *he_dev, i if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { hprintk("HBUF_ERR! (cid 0x%x)\n", cid); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); goto return_host_buffers; } @@ -1802,7 +1802,7 @@ he_service_rbrq(struct he_dev *he_dev, i RBRQ_LEN_ERR(he_dev->rbrq_head) ? "LEN_ERR" : "", vcc->vpi, vcc->vci); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto return_host_buffers; } @@ -1861,7 +1861,7 @@ he_service_rbrq(struct he_dev *he_dev, i vcc->push(vcc, skb); spin_lock(&he_dev->global_lock); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); return_host_buffers: ++pdus_assembled; @@ -2206,7 +2206,7 @@ __enqueue_tpd(struct he_dev *he_dev, str tpd->vcc->pop(tpd->vcc, tpd->skb); else dev_kfree_skb_any(tpd->skb); - atomic_inc(&tpd->vcc->stats->tx_err); + atomic_inc_unchecked(&tpd->vcc->stats->tx_err); } pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); return; @@ -2618,7 +2618,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -EINVAL; } @@ -2629,7 +2629,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -EINVAL; } #endif @@ -2641,7 +2641,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); spin_unlock_irqrestore(&he_dev->global_lock, flags); return -ENOMEM; } @@ -2683,7 +2683,7 @@ he_send(struct atm_vcc *vcc, struct sk_b vcc->pop(vcc, skb); else dev_kfree_skb_any(skb); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); spin_unlock_irqrestore(&he_dev->global_lock, flags); return -ENOMEM; } @@ -2714,7 +2714,7 @@ he_send(struct atm_vcc *vcc, struct sk_b __enqueue_tpd(he_dev, tpd, cid); spin_unlock_irqrestore(&he_dev->global_lock, flags); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/horizon.c linux-2.6.32.59-pax/drivers/atm/horizon.c --- linux-2.6.32.59/drivers/atm/horizon.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/horizon.c 2012-03-13 13:15:34.908098002 +0100 @@ -1033,7 +1033,7 @@ static void rx_schedule (hrz_dev * dev, { struct atm_vcc * vcc = ATM_SKB(skb)->vcc; // VC layer stats - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); __net_timestamp(skb); // end of our responsability vcc->push (vcc, skb); @@ -1185,7 +1185,7 @@ static void tx_schedule (hrz_dev * const dev->tx_iovec = NULL; // VC layer stats - atomic_inc(&ATM_SKB(skb)->vcc->stats->tx); + atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx); // free the skb hrz_kfree_skb (skb); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/idt77252.c linux-2.6.32.59-pax/drivers/atm/idt77252.c --- linux-2.6.32.59/drivers/atm/idt77252.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/idt77252.c 2012-03-13 13:15:34.912098002 +0100 @@ -810,7 +810,7 @@ drain_scq(struct idt77252_dev *card, str else dev_kfree_skb(skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); } atomic_dec(&scq->used); @@ -1073,13 +1073,13 @@ dequeue_rx(struct idt77252_dev *card, st if ((sb = dev_alloc_skb(64)) == NULL) { printk("%s: Can't allocate buffers for aal0.\n", card->name); - atomic_add(i, &vcc->stats->rx_drop); + atomic_add_unchecked(i, &vcc->stats->rx_drop); break; } if (!atm_charge(vcc, sb->truesize)) { RXPRINTK("%s: atm_charge() dropped aal0 packets.\n", card->name); - atomic_add(i - 1, &vcc->stats->rx_drop); + atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); dev_kfree_skb(sb); break; } @@ -1096,7 +1096,7 @@ dequeue_rx(struct idt77252_dev *card, st ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); cell += ATM_CELL_PAYLOAD; } @@ -1133,13 +1133,13 @@ dequeue_rx(struct idt77252_dev *card, st "(CDC: %08x)\n", card->name, len, rpp->len, readl(SAR_REG_CDC)); recycle_rx_pool_skb(card, rpp); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); return; } if (stat & SAR_RSQE_CRC) { RXPRINTK("%s: AAL5 CRC error.\n", card->name); recycle_rx_pool_skb(card, rpp); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); return; } if (skb_queue_len(&rpp->queue) > 1) { @@ -1150,7 +1150,7 @@ dequeue_rx(struct idt77252_dev *card, st RXPRINTK("%s: Can't alloc RX skb.\n", card->name); recycle_rx_pool_skb(card, rpp); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); return; } if (!atm_charge(vcc, skb->truesize)) { @@ -1169,7 +1169,7 @@ dequeue_rx(struct idt77252_dev *card, st __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); return; } @@ -1191,7 +1191,7 @@ dequeue_rx(struct idt77252_dev *card, st __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); if (skb->truesize > SAR_FB_SIZE_3) add_rx_skb(card, 3, SAR_FB_SIZE_3, 1); @@ -1303,14 +1303,14 @@ idt77252_rx_raw(struct idt77252_dev *car if (vcc->qos.aal != ATM_AAL0) { RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n", card->name, vpi, vci); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); goto drop; } if ((sb = dev_alloc_skb(64)) == NULL) { printk("%s: Can't allocate buffers for AAL0.\n", card->name); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto drop; } @@ -1329,7 +1329,7 @@ idt77252_rx_raw(struct idt77252_dev *car ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); drop: skb_pull(queue, 64); @@ -1954,13 +1954,13 @@ idt77252_send_skb(struct atm_vcc *vcc, s if (vc == NULL) { printk("%s: NULL connection in send().\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } if (!test_bit(VCF_TX, &vc->flags)) { printk("%s: Trying to transmit on a non-tx VC.\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } @@ -1972,14 +1972,14 @@ idt77252_send_skb(struct atm_vcc *vcc, s break; default: printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } if (skb_shinfo(skb)->nr_frags != 0) { printk("%s: No scatter-gather yet.\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return -EINVAL; } @@ -1987,7 +1987,7 @@ idt77252_send_skb(struct atm_vcc *vcc, s err = queue_skb(card, vc, skb, oam); if (err) { - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb(skb); return err; } @@ -2010,7 +2010,7 @@ idt77252_send_oam(struct atm_vcc *vcc, v skb = dev_alloc_skb(64); if (!skb) { printk("%s: Out of memory in send_oam().\n", card->name); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); return -ENOMEM; } atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/iphase.c linux-2.6.32.59-pax/drivers/atm/iphase.c --- linux-2.6.32.59/drivers/atm/iphase.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/iphase.c 2012-03-13 13:15:34.916098002 +0100 @@ -1123,7 +1123,7 @@ static int rx_pkt(struct atm_dev *dev) status = (u_short) (buf_desc_ptr->desc_mode); if (status & (RX_CER | RX_PTE | RX_OFL)) { - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); IF_ERR(printk("IA: bad packet, dropping it");) if (status & RX_CER) { IF_ERR(printk(" cause: packet CRC error\n");) @@ -1146,7 +1146,7 @@ static int rx_pkt(struct atm_dev *dev) len = dma_addr - buf_addr; if (len > iadev->rx_buf_sz) { printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); goto out_free_desc; } @@ -1296,7 +1296,7 @@ static void rx_dle_intr(struct atm_dev * ia_vcc = INPH_IA_VCC(vcc); if (ia_vcc == NULL) { - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); dev_kfree_skb_any(skb); atm_return(vcc, atm_guess_pdu2truesize(len)); goto INCR_DLE; @@ -1308,7 +1308,7 @@ static void rx_dle_intr(struct atm_dev * if ((length > iadev->rx_buf_sz) || (length > (skb->len - sizeof(struct cpcs_trailer)))) { - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)", length, skb->len);) dev_kfree_skb_any(skb); @@ -1324,7 +1324,7 @@ static void rx_dle_intr(struct atm_dev * IF_RX(printk("rx_dle_intr: skb push");) vcc->push(vcc,skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); iadev->rx_pkt_cnt++; } INCR_DLE: @@ -2806,15 +2806,15 @@ static int ia_ioctl(struct atm_dev *dev, { struct k_sonet_stats *stats; stats = &PRIV(_ia_dev[board])->sonet_stats; - printk("section_bip: %d\n", atomic_read(&stats->section_bip)); - printk("line_bip : %d\n", atomic_read(&stats->line_bip)); - printk("path_bip : %d\n", atomic_read(&stats->path_bip)); - printk("line_febe : %d\n", atomic_read(&stats->line_febe)); - printk("path_febe : %d\n", atomic_read(&stats->path_febe)); - printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs)); - printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs)); - printk("tx_cells : %d\n", atomic_read(&stats->tx_cells)); - printk("rx_cells : %d\n", atomic_read(&stats->rx_cells)); + printk("section_bip: %d\n", atomic_read_unchecked(&stats->section_bip)); + printk("line_bip : %d\n", atomic_read_unchecked(&stats->line_bip)); + printk("path_bip : %d\n", atomic_read_unchecked(&stats->path_bip)); + printk("line_febe : %d\n", atomic_read_unchecked(&stats->line_febe)); + printk("path_febe : %d\n", atomic_read_unchecked(&stats->path_febe)); + printk("corr_hcs : %d\n", atomic_read_unchecked(&stats->corr_hcs)); + printk("uncorr_hcs : %d\n", atomic_read_unchecked(&stats->uncorr_hcs)); + printk("tx_cells : %d\n", atomic_read_unchecked(&stats->tx_cells)); + printk("rx_cells : %d\n", atomic_read_unchecked(&stats->rx_cells)); } ia_cmds.status = 0; break; @@ -2919,7 +2919,7 @@ static int ia_pkt_tx (struct atm_vcc *vc if ((desc == 0) || (desc > iadev->num_tx_desc)) { IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);) - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); if (vcc->pop) vcc->pop(vcc, skb); else @@ -3024,14 +3024,14 @@ static int ia_pkt_tx (struct atm_vcc *vc ATM_DESC(skb) = vcc->vci; skb_queue_tail(&iadev->tx_dma_q, skb); - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); iadev->tx_pkt_cnt++; /* Increment transaction counter */ writel(2, iadev->dma+IPHASE5575_TX_COUNTER); #if 0 /* add flow control logic */ - if (atomic_read(&vcc->stats->tx) % 20 == 0) { + if (atomic_read_unchecked(&vcc->stats->tx) % 20 == 0) { if (iavcc->vc_desc_cnt > 10) { vcc->tx_quota = vcc->tx_quota * 3 / 4; printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota ); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/lanai.c linux-2.6.32.59-pax/drivers/atm/lanai.c --- linux-2.6.32.59/drivers/atm/lanai.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/lanai.c 2012-03-13 13:15:34.916098002 +0100 @@ -1305,7 +1305,7 @@ static void lanai_send_one_aal5(struct l vcc_tx_add_aal5_trailer(lvcc, skb->len, 0, 0); lanai_endtx(lanai, lvcc); lanai_free_skb(lvcc->tx.atmvcc, skb); - atomic_inc(&lvcc->tx.atmvcc->stats->tx); + atomic_inc_unchecked(&lvcc->tx.atmvcc->stats->tx); } /* Try to fill the buffer - don't call unless there is backlog */ @@ -1428,7 +1428,7 @@ static void vcc_rx_aal5(struct lanai_vcc ATM_SKB(skb)->vcc = lvcc->rx.atmvcc; __net_timestamp(skb); lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb); - atomic_inc(&lvcc->rx.atmvcc->stats->rx); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx); out: lvcc->rx.buf.ptr = end; cardvcc_write(lvcc, endptr, vcc_rxreadptr); @@ -1670,7 +1670,7 @@ static int handle_service(struct lanai_d DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 " "vcc %d\n", lanai->number, (unsigned int) s, vci); lanai->stats.service_rxnotaal5++; - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); return 0; } if (likely(!(s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)))) { @@ -1682,7 +1682,7 @@ static int handle_service(struct lanai_d int bytes; read_unlock(&vcc_sklist_lock); DPRINTK("got trashed rx pdu on vci %d\n", vci); - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); lvcc->stats.x.aal5.service_trash++; bytes = (SERVICE_GET_END(s) * 16) - (((unsigned long) lvcc->rx.buf.ptr) - @@ -1694,7 +1694,7 @@ static int handle_service(struct lanai_d } if (s & SERVICE_STREAM) { read_unlock(&vcc_sklist_lock); - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); lvcc->stats.x.aal5.service_stream++; printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream " "PDU on VCI %d!\n", lanai->number, vci); @@ -1702,7 +1702,7 @@ static int handle_service(struct lanai_d return 0; } DPRINTK("got rx crc error on vci %d\n", vci); - atomic_inc(&lvcc->rx.atmvcc->stats->rx_err); + atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err); lvcc->stats.x.aal5.service_rxcrc++; lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4]; cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/nicstar.c linux-2.6.32.59-pax/drivers/atm/nicstar.c --- linux-2.6.32.59/drivers/atm/nicstar.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/nicstar.c 2012-03-13 13:15:34.920098001 +0100 @@ -1723,7 +1723,7 @@ static int ns_send(struct atm_vcc *vcc, if ((vc = (vc_map *) vcc->dev_data) == NULL) { printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } @@ -1731,7 +1731,7 @@ static int ns_send(struct atm_vcc *vcc, if (!vc->tx) { printk("nicstar%d: Trying to transmit on a non-tx VC.\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } @@ -1739,7 +1739,7 @@ static int ns_send(struct atm_vcc *vcc, if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } @@ -1747,7 +1747,7 @@ static int ns_send(struct atm_vcc *vcc, if (skb_shinfo(skb)->nr_frags != 0) { printk("nicstar%d: No scatter-gather yet.\n", card->index); - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EINVAL; } @@ -1792,11 +1792,11 @@ static int ns_send(struct atm_vcc *vcc, if (push_scqe(card, vc, scq, &scqe, skb) != 0) { - atomic_inc(&vcc->stats->tx_err); + atomic_inc_unchecked(&vcc->stats->tx_err); dev_kfree_skb_any(skb); return -EIO; } - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); return 0; } @@ -2111,14 +2111,14 @@ static void dequeue_rx(ns_dev *card, ns_ { printk("nicstar%d: Can't allocate buffers for aal0.\n", card->index); - atomic_add(i,&vcc->stats->rx_drop); + atomic_add_unchecked(i,&vcc->stats->rx_drop); break; } if (!atm_charge(vcc, sb->truesize)) { RXPRINTK("nicstar%d: atm_charge() dropped aal0 packets.\n", card->index); - atomic_add(i-1,&vcc->stats->rx_drop); /* already increased by 1 */ + atomic_add_unchecked(i-1,&vcc->stats->rx_drop); /* already increased by 1 */ dev_kfree_skb_any(sb); break; } @@ -2133,7 +2133,7 @@ static void dequeue_rx(ns_dev *card, ns_ ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); cell += ATM_CELL_PAYLOAD; } @@ -2152,7 +2152,7 @@ static void dequeue_rx(ns_dev *card, ns_ if (iovb == NULL) { printk("nicstar%d: Out of iovec buffers.\n", card->index); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); recycle_rx_buf(card, skb); return; } @@ -2182,7 +2182,7 @@ static void dequeue_rx(ns_dev *card, ns_ else if (NS_SKB(iovb)->iovcnt >= NS_MAX_IOVECS) { printk("nicstar%d: received too big AAL5 SDU.\n", card->index); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, NS_MAX_IOVECS); NS_SKB(iovb)->iovcnt = 0; iovb->len = 0; @@ -2202,7 +2202,7 @@ static void dequeue_rx(ns_dev *card, ns_ printk("nicstar%d: Expected a small buffer, and this is not one.\n", card->index); which_list(card, skb); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_rx_buf(card, skb); vc->rx_iov = NULL; recycle_iov_buf(card, iovb); @@ -2216,7 +2216,7 @@ static void dequeue_rx(ns_dev *card, ns_ printk("nicstar%d: Expected a large buffer, and this is not one.\n", card->index); which_list(card, skb); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, NS_SKB(iovb)->iovcnt); vc->rx_iov = NULL; @@ -2240,7 +2240,7 @@ static void dequeue_rx(ns_dev *card, ns_ printk(" - PDU size mismatch.\n"); else printk(".\n"); - atomic_inc(&vcc->stats->rx_err); + atomic_inc_unchecked(&vcc->stats->rx_err); recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, NS_SKB(iovb)->iovcnt); vc->rx_iov = NULL; @@ -2256,7 +2256,7 @@ static void dequeue_rx(ns_dev *card, ns_ if (!atm_charge(vcc, skb->truesize)) { push_rxbufs(card, skb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { @@ -2268,7 +2268,7 @@ static void dequeue_rx(ns_dev *card, ns_ ATM_SKB(skb)->vcc = vcc; __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } } else if (NS_SKB(iovb)->iovcnt == 2) /* One small plus one large buffer */ @@ -2283,7 +2283,7 @@ static void dequeue_rx(ns_dev *card, ns_ if (!atm_charge(vcc, sb->truesize)) { push_rxbufs(card, sb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { @@ -2295,7 +2295,7 @@ static void dequeue_rx(ns_dev *card, ns_ ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); vcc->push(vcc, sb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } push_rxbufs(card, skb); @@ -2306,7 +2306,7 @@ static void dequeue_rx(ns_dev *card, ns_ if (!atm_charge(vcc, skb->truesize)) { push_rxbufs(card, skb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { @@ -2320,7 +2320,7 @@ static void dequeue_rx(ns_dev *card, ns_ ATM_SKB(skb)->vcc = vcc; __net_timestamp(skb); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } push_rxbufs(card, sb); @@ -2342,7 +2342,7 @@ static void dequeue_rx(ns_dev *card, ns_ if (hb == NULL) { printk("nicstar%d: Out of huge buffers.\n", card->index); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); recycle_iovec_rx_bufs(card, (struct iovec *) iovb->data, NS_SKB(iovb)->iovcnt); vc->rx_iov = NULL; @@ -2393,7 +2393,7 @@ static void dequeue_rx(ns_dev *card, ns_ } else dev_kfree_skb_any(hb); - atomic_inc(&vcc->stats->rx_drop); + atomic_inc_unchecked(&vcc->stats->rx_drop); } else { @@ -2427,7 +2427,7 @@ static void dequeue_rx(ns_dev *card, ns_ #endif /* NS_USE_DESTRUCTORS */ __net_timestamp(hb); vcc->push(vcc, hb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/solos-pci.c linux-2.6.32.59-pax/drivers/atm/solos-pci.c --- linux-2.6.32.59/drivers/atm/solos-pci.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/solos-pci.c 2012-03-13 13:15:34.920098001 +0100 @@ -708,7 +708,7 @@ void solos_bh(unsigned long card_arg) } atm_charge(vcc, skb->truesize); vcc->push(vcc, skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); break; case PKT_STATUS: @@ -1023,7 +1023,7 @@ static uint32_t fpga_tx(struct solos_car vcc = SKB_CB(oldskb)->vcc; if (vcc) { - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); solos_pop(vcc, oldskb); } else dev_kfree_skb_irq(oldskb); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/suni.c linux-2.6.32.59-pax/drivers/atm/suni.c --- linux-2.6.32.59/drivers/atm/suni.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/suni.c 2012-03-13 13:15:34.920098001 +0100 @@ -49,8 +49,8 @@ static DEFINE_SPINLOCK(sunis_lock); #define ADD_LIMITED(s,v) \ - atomic_add((v),&stats->s); \ - if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX); + atomic_add_unchecked((v),&stats->s); \ + if (atomic_read_unchecked(&stats->s) < 0) atomic_set_unchecked(&stats->s,INT_MAX); static void suni_hz(unsigned long from_timer) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/uPD98402.c linux-2.6.32.59-pax/drivers/atm/uPD98402.c --- linux-2.6.32.59/drivers/atm/uPD98402.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/uPD98402.c 2012-03-13 13:15:34.924098001 +0100 @@ -41,7 +41,7 @@ static int fetch_stats(struct atm_dev *d struct sonet_stats tmp; int error = 0; - atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); + atomic_add_unchecked(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs); sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp); if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp)); if (zero && !error) { @@ -160,9 +160,9 @@ static int uPD98402_ioctl(struct atm_dev #define ADD_LIMITED(s,v) \ - { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \ - if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \ - atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); } + { atomic_add_unchecked(GET(v),&PRIV(dev)->sonet_stats.s); \ + if (atomic_read_unchecked(&PRIV(dev)->sonet_stats.s) < 0) \ + atomic_set_unchecked(&PRIV(dev)->sonet_stats.s,INT_MAX); } static void stat_event(struct atm_dev *dev) @@ -193,7 +193,7 @@ static void uPD98402_int(struct atm_dev if (reason & uPD98402_INT_PFM) stat_event(dev); if (reason & uPD98402_INT_PCO) { (void) GET(PCOCR); /* clear interrupt cause */ - atomic_add(GET(HECCT), + atomic_add_unchecked(GET(HECCT), &PRIV(dev)->sonet_stats.uncorr_hcs); } if ((reason & uPD98402_INT_RFO) && @@ -221,9 +221,9 @@ static int uPD98402_start(struct atm_dev PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO | uPD98402_INT_LOS),PIMR); /* enable them */ (void) fetch_stats(dev,NULL,1); /* clear kernel counters */ - atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1); - atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1); - atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1); + atomic_set_unchecked(&PRIV(dev)->sonet_stats.corr_hcs,-1); + atomic_set_unchecked(&PRIV(dev)->sonet_stats.tx_cells,-1); + atomic_set_unchecked(&PRIV(dev)->sonet_stats.rx_cells,-1); return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/atm/zatm.c linux-2.6.32.59-pax/drivers/atm/zatm.c --- linux-2.6.32.59/drivers/atm/zatm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/atm/zatm.c 2012-03-13 13:15:34.924098001 +0100 @@ -458,7 +458,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy } if (!size) { dev_kfree_skb_irq(skb); - if (vcc) atomic_inc(&vcc->stats->rx_err); + if (vcc) atomic_inc_unchecked(&vcc->stats->rx_err); continue; } if (!atm_charge(vcc,skb->truesize)) { @@ -468,7 +468,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy skb->len = size; ATM_SKB(skb)->vcc = vcc; vcc->push(vcc,skb); - atomic_inc(&vcc->stats->rx); + atomic_inc_unchecked(&vcc->stats->rx); } zout(pos & 0xffff,MTA(mbx)); #if 0 /* probably a stupid idea */ @@ -732,7 +732,7 @@ if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD skb_queue_head(&zatm_vcc->backlog,skb); break; } - atomic_inc(&vcc->stats->tx); + atomic_inc_unchecked(&vcc->stats->tx); wake_up(&zatm_vcc->tx_wait); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/block/cciss.c linux-2.6.32.59-pax/drivers/block/cciss.c --- linux-2.6.32.59/drivers/block/cciss.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/block/cciss.c 2012-03-13 13:15:34.924098001 +0100 @@ -2852,7 +2852,7 @@ static unsigned long pollcomplete(int ct /* Wait (up to 20 seconds) for a command to complete */ for (i = 20 * HZ; i > 0; i--) { - done = hba[ctlr]->access.command_completed(hba[ctlr]); + done = hba[ctlr]->access->command_completed(hba[ctlr]); if (done == FIFO_EMPTY) schedule_timeout_uninterruptible(1); else @@ -2876,7 +2876,7 @@ static int sendcmd_core(ctlr_info_t *h, resend_cmd1: /* Disable interrupt on the board. */ - h->access.set_intr_mask(h, CCISS_INTR_OFF); + h->access->set_intr_mask(h, CCISS_INTR_OFF); /* Make sure there is room in the command FIFO */ /* Actually it should be completely empty at this time */ @@ -2884,13 +2884,13 @@ resend_cmd1: /* tape side of the driver. */ for (i = 200000; i > 0; i--) { /* if fifo isn't full go */ - if (!(h->access.fifo_full(h))) + if (!(h->access->fifo_full(h))) break; udelay(10); printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," " waiting!\n", h->ctlr); } - h->access.submit_command(h, c); /* Send the cmd */ + h->access->submit_command(h, c); /* Send the cmd */ do { complete = pollcomplete(h->ctlr); @@ -3023,7 +3023,7 @@ static void start_io(ctlr_info_t *h) while (!hlist_empty(&h->reqQ)) { c = hlist_entry(h->reqQ.first, CommandList_struct, list); /* can't do anything if fifo is full */ - if ((h->access.fifo_full(h))) { + if ((h->access->fifo_full(h))) { printk(KERN_WARNING "cciss: fifo full\n"); break; } @@ -3033,7 +3033,7 @@ static void start_io(ctlr_info_t *h) h->Qdepth--; /* Tell the controller execute command */ - h->access.submit_command(h, c); + h->access->submit_command(h, c); /* Put job onto the completed Q */ addQ(&h->cmpQ, c); @@ -3393,17 +3393,17 @@ startio: static inline unsigned long get_next_completion(ctlr_info_t *h) { - return h->access.command_completed(h); + return h->access->command_completed(h); } static inline int interrupt_pending(ctlr_info_t *h) { - return h->access.intr_pending(h); + return h->access->intr_pending(h); } static inline long interrupt_not_for_us(ctlr_info_t *h) { - return (((h->access.intr_pending(h) == 0) || + return (((h->access->intr_pending(h) == 0) || (h->interrupts_enabled == 0))); } @@ -3892,7 +3892,7 @@ static int __devinit cciss_pci_init(ctlr */ c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); c->product_name = products[prod_index].product_name; - c->access = *(products[prod_index].access); + c->access = products[prod_index].access; c->nr_cmds = c->max_commands - 4; if ((readb(&c->cfgtable->Signature[0]) != 'C') || (readb(&c->cfgtable->Signature[1]) != 'I') || @@ -4291,7 +4291,7 @@ static int __devinit cciss_init_one(stru } /* make sure the board interrupts are off */ - hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); + hba[i]->access->set_intr_mask(hba[i], CCISS_INTR_OFF); if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", @@ -4341,7 +4341,7 @@ static int __devinit cciss_init_one(stru cciss_scsi_setup(i); /* Turn the interrupts on so we can service requests */ - hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); + hba[i]->access->set_intr_mask(hba[i], CCISS_INTR_ON); /* Get the firmware version */ inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/block/cciss.h linux-2.6.32.59-pax/drivers/block/cciss.h --- linux-2.6.32.59/drivers/block/cciss.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/block/cciss.h 2012-03-13 13:15:34.928098001 +0100 @@ -90,7 +90,7 @@ struct ctlr_info // information about each logical volume drive_info_struct *drv[CISS_MAX_LUN]; - struct access_method access; + struct access_method *access; /* queue and queue Info */ struct hlist_head reqQ; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/block/cpqarray.c linux-2.6.32.59-pax/drivers/block/cpqarray.c --- linux-2.6.32.59/drivers/block/cpqarray.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/block/cpqarray.c 2012-03-13 13:15:34.928098001 +0100 @@ -402,7 +402,7 @@ static int __init cpqarray_register_ctlr if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) { goto Enomem4; } - hba[i]->access.set_intr_mask(hba[i], 0); + hba[i]->access->set_intr_mask(hba[i], 0); if (request_irq(hba[i]->intr, do_ida_intr, IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i])) { @@ -460,7 +460,7 @@ static int __init cpqarray_register_ctlr add_timer(&hba[i]->timer); /* Enable IRQ now that spinlock and rate limit timer are set up */ - hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY); + hba[i]->access->set_intr_mask(hba[i], FIFO_NOT_EMPTY); for(j=0; jproduct_name = products[i].product_name; - c->access = *(products[i].access); + c->access = products[i].access; break; } } @@ -793,7 +793,7 @@ static int __init cpqarray_eisa_detect(v hba[ctlr]->intr = intr; sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr); hba[ctlr]->product_name = products[j].product_name; - hba[ctlr]->access = *(products[j].access); + hba[ctlr]->access = products[j].access; hba[ctlr]->ctlr = ctlr; hba[ctlr]->board_id = board_id; hba[ctlr]->pci_dev = NULL; /* not PCI */ @@ -968,7 +968,7 @@ static void start_io(ctlr_info_t *h) while((c = h->reqQ) != NULL) { /* Can't do anything if we're busy */ - if (h->access.fifo_full(h) == 0) + if (h->access->fifo_full(h) == 0) return; /* Get the first entry from the request Q */ @@ -976,7 +976,7 @@ static void start_io(ctlr_info_t *h) h->Qdepth--; /* Tell the controller to do our bidding */ - h->access.submit_command(h, c); + h->access->submit_command(h, c); /* Get onto the completion Q */ addQ(&h->cmpQ, c); @@ -1038,7 +1038,7 @@ static irqreturn_t do_ida_intr(int irq, unsigned long flags; __u32 a,a1; - istat = h->access.intr_pending(h); + istat = h->access->intr_pending(h); /* Is this interrupt for us? */ if (istat == 0) return IRQ_NONE; @@ -1049,7 +1049,7 @@ static irqreturn_t do_ida_intr(int irq, */ spin_lock_irqsave(IDA_LOCK(h->ctlr), flags); if (istat & FIFO_NOT_EMPTY) { - while((a = h->access.command_completed(h))) { + while((a = h->access->command_completed(h))) { a1 = a; a &= ~3; if ((c = h->cmpQ) == NULL) { @@ -1434,11 +1434,11 @@ static int sendcmd( /* * Disable interrupt */ - info_p->access.set_intr_mask(info_p, 0); + info_p->access->set_intr_mask(info_p, 0); /* Make sure there is room in the command FIFO */ /* Actually it should be completely empty at this time. */ for (i = 200000; i > 0; i--) { - temp = info_p->access.fifo_full(info_p); + temp = info_p->access->fifo_full(info_p); if (temp != 0) { break; } @@ -1451,7 +1451,7 @@ DBG( /* * Send the cmd */ - info_p->access.submit_command(info_p, c); + info_p->access->submit_command(info_p, c); complete = pollcomplete(ctlr); pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr, @@ -1534,9 +1534,9 @@ static int revalidate_allvol(ctlr_info_t * we check the new geometry. Then turn interrupts back on when * we're done. */ - host->access.set_intr_mask(host, 0); + host->access->set_intr_mask(host, 0); getgeometry(ctlr); - host->access.set_intr_mask(host, FIFO_NOT_EMPTY); + host->access->set_intr_mask(host, FIFO_NOT_EMPTY); for(i=0; i 0; i--) { - done = hba[ctlr]->access.command_completed(hba[ctlr]); + done = hba[ctlr]->access->command_completed(hba[ctlr]); if (done == 0) { udelay(10); /* a short fixed delay */ } else diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/block/cpqarray.h linux-2.6.32.59-pax/drivers/block/cpqarray.h --- linux-2.6.32.59/drivers/block/cpqarray.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/block/cpqarray.h 2012-03-13 13:15:34.928098001 +0100 @@ -99,7 +99,7 @@ struct ctlr_info { drv_info_t drv[NWD]; struct proc_dir_entry *proc; - struct access_method access; + struct access_method *access; cmdlist_t *reqQ; cmdlist_t *cmpQ; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/block/loop.c linux-2.6.32.59-pax/drivers/block/loop.c --- linux-2.6.32.59/drivers/block/loop.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/block/loop.c 2012-03-13 13:15:34.932098001 +0100 @@ -282,7 +282,7 @@ static int __do_lo_send_write(struct fil mm_segment_t old_fs = get_fs(); set_fs(get_ds()); - bw = file->f_op->write(file, buf, len, &pos); + bw = file->f_op->write(file, (const char __force_user *)buf, len, &pos); set_fs(old_fs); if (likely(bw == len)) return 0; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/agp/frontend.c linux-2.6.32.59-pax/drivers/char/agp/frontend.c --- linux-2.6.32.59/drivers/char/agp/frontend.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/agp/frontend.c 2012-03-13 13:15:34.932098001 +0100 @@ -824,7 +824,7 @@ static int agpioc_reserve_wrap(struct ag if (copy_from_user(&reserve, arg, sizeof(struct agp_region))) return -EFAULT; - if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment)) + if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment_priv)) return -EFAULT; client = agp_find_client_by_pid(reserve.pid); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/hpet.c linux-2.6.32.59-pax/drivers/char/hpet.c --- linux-2.6.32.59/drivers/char/hpet.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/hpet.c 2012-03-13 13:15:34.932098001 +0100 @@ -430,7 +430,7 @@ static int hpet_release(struct inode *in return 0; } -static int hpet_ioctl_common(struct hpet_dev *, int, unsigned long, int); +static int hpet_ioctl_common(struct hpet_dev *, unsigned int, unsigned long, int); static int hpet_ioctl(struct inode *inode, struct file *file, unsigned int cmd, @@ -565,7 +565,7 @@ static inline unsigned long hpet_time_di } static int -hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel) +hpet_ioctl_common(struct hpet_dev *devp, unsigned int cmd, unsigned long arg, int kernel) { struct hpet_timer __iomem *timer; struct hpet __iomem *hpet; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/hvcs.c linux-2.6.32.59-pax/drivers/char/hvcs.c --- linux-2.6.32.59/drivers/char/hvcs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/hvcs.c 2012-03-13 13:15:34.932098001 +0100 @@ -82,6 +82,7 @@ #include #include #include +#include /* * 1.3.0 -> 1.3.1 In hvcs_open memset(..,0x00,..) instead of memset(..,0x3F,00). @@ -269,7 +270,7 @@ struct hvcs_struct { unsigned int index; struct tty_struct *tty; - int open_count; + local_t open_count; /* * Used to tell the driver kernel_thread what operations need to take @@ -419,7 +420,7 @@ static ssize_t hvcs_vterm_state_store(st spin_lock_irqsave(&hvcsd->lock, flags); - if (hvcsd->open_count > 0) { + if (local_read(&hvcsd->open_count) > 0) { spin_unlock_irqrestore(&hvcsd->lock, flags); printk(KERN_INFO "HVCS: vterm state unchanged. " "The hvcs device node is still in use.\n"); @@ -1135,7 +1136,7 @@ static int hvcs_open(struct tty_struct * if ((retval = hvcs_partner_connect(hvcsd))) goto error_release; - hvcsd->open_count = 1; + local_set(&hvcsd->open_count, 1); hvcsd->tty = tty; tty->driver_data = hvcsd; @@ -1169,7 +1170,7 @@ fast_open: spin_lock_irqsave(&hvcsd->lock, flags); kref_get(&hvcsd->kref); - hvcsd->open_count++; + local_inc(&hvcsd->open_count); hvcsd->todo_mask |= HVCS_SCHED_READ; spin_unlock_irqrestore(&hvcsd->lock, flags); @@ -1213,7 +1214,7 @@ static void hvcs_close(struct tty_struct hvcsd = tty->driver_data; spin_lock_irqsave(&hvcsd->lock, flags); - if (--hvcsd->open_count == 0) { + if (local_dec_and_test(&hvcsd->open_count)) { vio_disable_interrupts(hvcsd->vdev); @@ -1239,10 +1240,10 @@ static void hvcs_close(struct tty_struct free_irq(irq, hvcsd); kref_put(&hvcsd->kref, destroy_hvcs_struct); return; - } else if (hvcsd->open_count < 0) { + } else if (local_read(&hvcsd->open_count) < 0) { printk(KERN_ERR "HVCS: vty-server@%X open_count: %d" " is missmanaged.\n", - hvcsd->vdev->unit_address, hvcsd->open_count); + hvcsd->vdev->unit_address, local_read(&hvcsd->open_count)); } spin_unlock_irqrestore(&hvcsd->lock, flags); @@ -1258,7 +1259,7 @@ static void hvcs_hangup(struct tty_struc spin_lock_irqsave(&hvcsd->lock, flags); /* Preserve this so that we know how many kref refs to put */ - temp_open_count = hvcsd->open_count; + temp_open_count = local_read(&hvcsd->open_count); /* * Don't kref put inside the spinlock because the destruction @@ -1273,7 +1274,7 @@ static void hvcs_hangup(struct tty_struc hvcsd->tty->driver_data = NULL; hvcsd->tty = NULL; - hvcsd->open_count = 0; + local_set(&hvcsd->open_count, 0); /* This will drop any buffered data on the floor which is OK in a hangup * scenario. */ @@ -1344,7 +1345,7 @@ static int hvcs_write(struct tty_struct * the middle of a write operation? This is a crummy place to do this * but we want to keep it all in the spinlock. */ - if (hvcsd->open_count <= 0) { + if (local_read(&hvcsd->open_count) <= 0) { spin_unlock_irqrestore(&hvcsd->lock, flags); return -ENODEV; } @@ -1418,7 +1419,7 @@ static int hvcs_write_room(struct tty_st { struct hvcs_struct *hvcsd = tty->driver_data; - if (!hvcsd || hvcsd->open_count <= 0) + if (!hvcsd || local_read(&hvcsd->open_count) <= 0) return 0; return HVCS_BUFF_LEN - hvcsd->chars_in_buffer; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/ipmi/ipmi_msghandler.c linux-2.6.32.59-pax/drivers/char/ipmi/ipmi_msghandler.c --- linux-2.6.32.59/drivers/char/ipmi/ipmi_msghandler.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/ipmi/ipmi_msghandler.c 2012-03-13 13:15:34.936098000 +0100 @@ -414,7 +414,7 @@ struct ipmi_smi { struct proc_dir_entry *proc_dir; char proc_dir_name[10]; - atomic_t stats[IPMI_NUM_STATS]; + atomic_unchecked_t stats[IPMI_NUM_STATS]; /* * run_to_completion duplicate of smb_info, smi_info @@ -447,9 +447,9 @@ static DEFINE_MUTEX(smi_watchers_mutex); #define ipmi_inc_stat(intf, stat) \ - atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat]) + atomic_inc_unchecked(&(intf)->stats[IPMI_STAT_ ## stat]) #define ipmi_get_stat(intf, stat) \ - ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat])) + ((unsigned int) atomic_read_unchecked(&(intf)->stats[IPMI_STAT_ ## stat])) static int is_lan_addr(struct ipmi_addr *addr) { @@ -2808,7 +2808,7 @@ int ipmi_register_smi(struct ipmi_smi_ha INIT_LIST_HEAD(&intf->cmd_rcvrs); init_waitqueue_head(&intf->waitq); for (i = 0; i < IPMI_NUM_STATS; i++) - atomic_set(&intf->stats[i], 0); + atomic_set_unchecked(&intf->stats[i], 0); intf->proc_dir = NULL; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/ipmi/ipmi_si_intf.c linux-2.6.32.59-pax/drivers/char/ipmi/ipmi_si_intf.c --- linux-2.6.32.59/drivers/char/ipmi/ipmi_si_intf.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/ipmi/ipmi_si_intf.c 2012-03-13 13:15:34.936098000 +0100 @@ -277,7 +277,7 @@ struct smi_info { unsigned char slave_addr; /* Counters and things for the proc filesystem. */ - atomic_t stats[SI_NUM_STATS]; + atomic_unchecked_t stats[SI_NUM_STATS]; struct task_struct *thread; @@ -285,9 +285,9 @@ struct smi_info { }; #define smi_inc_stat(smi, stat) \ - atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) + atomic_inc_unchecked(&(smi)->stats[SI_STAT_ ## stat]) #define smi_get_stat(smi, stat) \ - ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) + ((unsigned int) atomic_read_unchecked(&(smi)->stats[SI_STAT_ ## stat])) #define SI_MAX_PARMS 4 @@ -2931,7 +2931,7 @@ static int try_smi_init(struct smi_info atomic_set(&new_smi->req_events, 0); new_smi->run_to_completion = 0; for (i = 0; i < SI_NUM_STATS; i++) - atomic_set(&new_smi->stats[i], 0); + atomic_set_unchecked(&new_smi->stats[i], 0); new_smi->interrupt_disabled = 0; atomic_set(&new_smi->stop_operation, 0); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/keyboard.c linux-2.6.32.59-pax/drivers/char/keyboard.c --- linux-2.6.32.59/drivers/char/keyboard.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/keyboard.c 2012-03-13 13:15:34.940098000 +0100 @@ -1386,7 +1386,7 @@ static const struct input_device_id kbd_ .evbit = { BIT_MASK(EV_SND) }, }, - { }, /* Terminating entry */ + { 0 }, /* Terminating entry */ }; MODULE_DEVICE_TABLE(input, kbd_ids); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/mbcs.c linux-2.6.32.59-pax/drivers/char/mbcs.c --- linux-2.6.32.59/drivers/char/mbcs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/mbcs.c 2012-03-13 13:15:34.940098000 +0100 @@ -799,7 +799,7 @@ static int mbcs_remove(struct cx_dev *de return 0; } -static const struct cx_device_id __devinitdata mbcs_id_table[] = { +static const struct cx_device_id __devinitconst mbcs_id_table[] = { { .part_num = MBCS_PART_NUM, .mfg_num = MBCS_MFG_NUM, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/mem.c linux-2.6.32.59-pax/drivers/char/mem.c --- linux-2.6.32.59/drivers/char/mem.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/mem.c 2012-07-27 21:50:49.110341381 +0200 @@ -155,6 +155,8 @@ static ssize_t read_mem(struct file * fi #endif while (count > 0) { + char *temp; + /* * Handle first page in case it's not aligned */ @@ -177,11 +179,31 @@ static ssize_t read_mem(struct file * fi if (!ptr) return -EFAULT; - if (copy_to_user(buf, ptr, sz)) { +#ifdef CONFIG_PAX_USERCOPY + temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY); + if (!temp) { + unxlate_dev_mem_ptr(p, ptr); + return -ENOMEM; + } + memcpy(temp, ptr, sz); +#else + temp = ptr; +#endif + + if (copy_to_user(buf, temp, sz)) { + +#ifdef CONFIG_PAX_USERCOPY + kfree(temp); +#endif + unxlate_dev_mem_ptr(p, ptr); return -EFAULT; } +#ifdef CONFIG_PAX_USERCOPY + kfree(temp); +#endif + unxlate_dev_mem_ptr(p, ptr); buf += sz; @@ -419,9 +441,8 @@ static ssize_t read_kmem(struct file *fi size_t count, loff_t *ppos) { unsigned long p = *ppos; - ssize_t low_count, read, sz; + ssize_t low_count, read, sz, err = 0; char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */ - int err = 0; read = 0; if (p < (unsigned long) high_memory) { @@ -444,6 +465,8 @@ static ssize_t read_kmem(struct file *fi } #endif while (low_count > 0) { + char *temp; + sz = size_inside_page(p, low_count); /* @@ -453,7 +476,22 @@ static ssize_t read_kmem(struct file *fi */ kbuf = xlate_dev_kmem_ptr((char *)p); - if (copy_to_user(buf, kbuf, sz)) +#ifdef CONFIG_PAX_USERCOPY + temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY); + if (!temp) + return -ENOMEM; + memcpy(temp, kbuf, sz); +#else + temp = kbuf; +#endif + + err = copy_to_user(buf, temp, sz); + +#ifdef CONFIG_PAX_USERCOPY + kfree(temp); +#endif + + if (err) return -EFAULT; buf += sz; p += sz; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/mmtimer.c linux-2.6.32.59-pax/drivers/char/mmtimer.c --- linux-2.6.32.59/drivers/char/mmtimer.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/mmtimer.c 2012-03-13 13:15:34.944098000 +0100 @@ -756,7 +756,7 @@ static int sgi_timer_set(struct k_itimer return err; } -static struct k_clock sgi_clock = { +static k_clock_no_const sgi_clock = { .res = 0, .clock_set = sgi_clock_set, .clock_get = sgi_clock_get, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/pcmcia/ipwireless/tty.c linux-2.6.32.59-pax/drivers/char/pcmcia/ipwireless/tty.c --- linux-2.6.32.59/drivers/char/pcmcia/ipwireless/tty.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/pcmcia/ipwireless/tty.c 2012-03-13 13:15:34.944098000 +0100 @@ -29,6 +29,7 @@ #include #include #include +#include #include "tty.h" #include "network.h" @@ -51,7 +52,7 @@ struct ipw_tty { int tty_type; struct ipw_network *network; struct tty_struct *linux_tty; - int open_count; + local_t open_count; unsigned int control_lines; struct mutex ipw_tty_mutex; int tx_bytes_queued; @@ -127,10 +128,10 @@ static int ipw_open(struct tty_struct *l mutex_unlock(&tty->ipw_tty_mutex); return -ENODEV; } - if (tty->open_count == 0) + if (local_read(&tty->open_count) == 0) tty->tx_bytes_queued = 0; - tty->open_count++; + local_inc(&tty->open_count); tty->linux_tty = linux_tty; linux_tty->driver_data = tty; @@ -146,9 +147,7 @@ static int ipw_open(struct tty_struct *l static void do_ipw_close(struct ipw_tty *tty) { - tty->open_count--; - - if (tty->open_count == 0) { + if (local_dec_return(&tty->open_count) == 0) { struct tty_struct *linux_tty = tty->linux_tty; if (linux_tty != NULL) { @@ -169,7 +168,7 @@ static void ipw_hangup(struct tty_struct return; mutex_lock(&tty->ipw_tty_mutex); - if (tty->open_count == 0) { + if (local_read(&tty->open_count) == 0) { mutex_unlock(&tty->ipw_tty_mutex); return; } @@ -198,7 +197,7 @@ void ipwireless_tty_received(struct ipw_ return; } - if (!tty->open_count) { + if (!local_read(&tty->open_count)) { mutex_unlock(&tty->ipw_tty_mutex); return; } @@ -240,7 +239,7 @@ static int ipw_write(struct tty_struct * return -ENODEV; mutex_lock(&tty->ipw_tty_mutex); - if (!tty->open_count) { + if (!local_read(&tty->open_count)) { mutex_unlock(&tty->ipw_tty_mutex); return -EINVAL; } @@ -280,7 +279,7 @@ static int ipw_write_room(struct tty_str if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; @@ -322,7 +321,7 @@ static int ipw_chars_in_buffer(struct tt if (!tty) return 0; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return 0; return tty->tx_bytes_queued; @@ -403,7 +402,7 @@ static int ipw_tiocmget(struct tty_struc if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; return get_control_lines(tty); @@ -419,7 +418,7 @@ ipw_tiocmset(struct tty_struct *linux_tt if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; return set_control_lines(tty, set, clear); @@ -433,7 +432,7 @@ static int ipw_ioctl(struct tty_struct * if (!tty) return -ENODEV; - if (!tty->open_count) + if (!local_read(&tty->open_count)) return -EINVAL; /* FIXME: Exactly how is the tty object locked here .. */ @@ -591,7 +590,7 @@ void ipwireless_tty_free(struct ipw_tty against a parallel ioctl etc */ mutex_lock(&ttyj->ipw_tty_mutex); } - while (ttyj->open_count) + while (local_read(&ttyj->open_count)) do_ipw_close(ttyj); ipwireless_disassociate_network_ttys(network, ttyj->channel_idx); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/pty.c linux-2.6.32.59-pax/drivers/char/pty.c --- linux-2.6.32.59/drivers/char/pty.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/pty.c 2012-03-13 13:15:34.944098000 +0100 @@ -736,8 +736,10 @@ static void __init unix98_pty_init(void) register_sysctl_table(pty_root_table); /* Now create the /dev/ptmx special device */ + pax_open_kernel(); tty_default_fops(&ptmx_fops); - ptmx_fops.open = ptmx_open; + *(void **)&ptmx_fops.open = ptmx_open; + pax_close_kernel(); cdev_init(&ptmx_cdev, &ptmx_fops); if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) || diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/random.c linux-2.6.32.59-pax/drivers/char/random.c --- linux-2.6.32.59/drivers/char/random.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/random.c 2012-07-21 11:16:35.685052068 +0200 @@ -714,6 +714,17 @@ void add_disk_randomness(struct gendisk } #endif +#ifdef CONFIG_PAX_LATENT_ENTROPY +u64 latent_entropy; + +__init void transfer_latent_entropy(void) +{ + mix_pool_bytes(&input_pool, &latent_entropy, sizeof(latent_entropy)); + mix_pool_bytes(&nonblocking_pool, &latent_entropy, sizeof(latent_entropy)); +// printk(KERN_INFO "PAX: transferring latent entropy: %16llx\n", latent_entropy); +} +#endif + #define EXTRACT_SIZE 10 /********************************************************************* @@ -1209,7 +1220,7 @@ EXPORT_SYMBOL(generate_random_uuid); #include static int min_read_thresh = 8, min_write_thresh; -static int max_read_thresh = INPUT_POOL_WORDS * 32; +static int max_read_thresh = OUTPUT_POOL_WORDS * 32; static int max_write_thresh = INPUT_POOL_WORDS * 32; static char sysctl_bootid[16]; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/sonypi.c linux-2.6.32.59-pax/drivers/char/sonypi.c --- linux-2.6.32.59/drivers/char/sonypi.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/sonypi.c 2012-03-13 13:15:34.948098000 +0100 @@ -55,6 +55,7 @@ #include #include #include +#include #include @@ -491,7 +492,7 @@ static struct sonypi_device { spinlock_t fifo_lock; wait_queue_head_t fifo_proc_list; struct fasync_struct *fifo_async; - int open_count; + local_t open_count; int model; struct input_dev *input_jog_dev; struct input_dev *input_key_dev; @@ -895,7 +896,7 @@ static int sonypi_misc_fasync(int fd, st static int sonypi_misc_release(struct inode *inode, struct file *file) { mutex_lock(&sonypi_device.lock); - sonypi_device.open_count--; + local_dec(&sonypi_device.open_count); mutex_unlock(&sonypi_device.lock); return 0; } @@ -905,9 +906,9 @@ static int sonypi_misc_open(struct inode lock_kernel(); mutex_lock(&sonypi_device.lock); /* Flush input queue on first open */ - if (!sonypi_device.open_count) + if (!local_read(&sonypi_device.open_count)) kfifo_reset(sonypi_device.fifo); - sonypi_device.open_count++; + local_inc(&sonypi_device.open_count); mutex_unlock(&sonypi_device.lock); unlock_kernel(); return 0; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/tpm/tpm_bios.c linux-2.6.32.59-pax/drivers/char/tpm/tpm_bios.c --- linux-2.6.32.59/drivers/char/tpm/tpm_bios.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/tpm/tpm_bios.c 2012-03-13 13:15:34.948098000 +0100 @@ -172,7 +172,7 @@ static void *tpm_bios_measurements_start event = addr; if ((event->event_type == 0 && event->event_size == 0) || - ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit)) + (event->event_size >= limit - addr - sizeof(struct tcpa_event))) return NULL; return addr; @@ -197,7 +197,7 @@ static void *tpm_bios_measurements_next( return NULL; if ((event->event_type == 0 && event->event_size == 0) || - ((v + sizeof(struct tcpa_event) + event->event_size) >= limit)) + (event->event_size >= limit - v - sizeof(struct tcpa_event))) return NULL; (*pos)++; @@ -290,7 +290,8 @@ static int tpm_binary_bios_measurements_ int i; for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++) - seq_putc(m, data[i]); + if (!seq_putc(m, data[i])) + return -EFAULT; return 0; } @@ -409,8 +410,13 @@ static int read_log(struct tpm_bios_log log->bios_event_log_end = log->bios_event_log + len; virt = acpi_os_map_memory(start, len); + if (!virt) { + kfree(log->bios_event_log); + log->bios_event_log = NULL; + return -EFAULT; + } - memcpy(log->bios_event_log, virt, len); + memcpy(log->bios_event_log, (const char __force_kernel *)virt, len); acpi_os_unmap_memory(virt, len); return 0; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/tpm/tpm.c linux-2.6.32.59-pax/drivers/char/tpm/tpm.c --- linux-2.6.32.59/drivers/char/tpm/tpm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/tpm/tpm.c 2012-03-13 13:15:34.952098000 +0100 @@ -405,7 +405,7 @@ static ssize_t tpm_transmit(struct tpm_c chip->vendor.req_complete_val) goto out_recv; - if ((status == chip->vendor.req_canceled)) { + if (status == chip->vendor.req_canceled) { dev_err(chip->dev, "Operation Canceled\n"); rc = -ECANCELED; goto out; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/tty_io.c linux-2.6.32.59-pax/drivers/char/tty_io.c --- linux-2.6.32.59/drivers/char/tty_io.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/tty_io.c 2012-03-13 13:15:34.952098000 +0100 @@ -146,7 +146,7 @@ static int tty_open(struct inode *, stru static int tty_release(struct inode *, struct file *); long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg); #ifdef CONFIG_COMPAT -static long tty_compat_ioctl(struct file *file, unsigned int cmd, +long tty_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); #else #define tty_compat_ioctl NULL @@ -2603,8 +2603,10 @@ long tty_ioctl(struct file *file, unsign return retval; } +EXPORT_SYMBOL(tty_ioctl); + #ifdef CONFIG_COMPAT -static long tty_compat_ioctl(struct file *file, unsigned int cmd, +long tty_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct inode *inode = file->f_dentry->d_inode; @@ -2628,6 +2630,8 @@ static long tty_compat_ioctl(struct file return retval; } + +EXPORT_SYMBOL(tty_compat_ioctl); #endif /* @@ -3073,7 +3077,7 @@ EXPORT_SYMBOL_GPL(get_current_tty); void tty_default_fops(struct file_operations *fops) { - *fops = tty_fops; + memcpy((void *)fops, &tty_fops, sizeof(tty_fops)); } /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/tty_ldisc.c linux-2.6.32.59-pax/drivers/char/tty_ldisc.c --- linux-2.6.32.59/drivers/char/tty_ldisc.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/tty_ldisc.c 2012-03-13 13:15:34.952098000 +0100 @@ -74,7 +74,7 @@ static void put_ldisc(struct tty_ldisc * if (atomic_dec_and_lock(&ld->users, &tty_ldisc_lock)) { struct tty_ldisc_ops *ldo = ld->ops; - ldo->refcount--; + atomic_dec(&ldo->refcount); module_put(ldo->owner); spin_unlock_irqrestore(&tty_ldisc_lock, flags); @@ -109,7 +109,7 @@ int tty_register_ldisc(int disc, struct spin_lock_irqsave(&tty_ldisc_lock, flags); tty_ldiscs[disc] = new_ldisc; new_ldisc->num = disc; - new_ldisc->refcount = 0; + atomic_set(&new_ldisc->refcount, 0); spin_unlock_irqrestore(&tty_ldisc_lock, flags); return ret; @@ -137,7 +137,7 @@ int tty_unregister_ldisc(int disc) return -EINVAL; spin_lock_irqsave(&tty_ldisc_lock, flags); - if (tty_ldiscs[disc]->refcount) + if (atomic_read(&tty_ldiscs[disc]->refcount)) ret = -EBUSY; else tty_ldiscs[disc] = NULL; @@ -158,7 +158,7 @@ static struct tty_ldisc_ops *get_ldops(i if (ldops) { ret = ERR_PTR(-EAGAIN); if (try_module_get(ldops->owner)) { - ldops->refcount++; + atomic_inc(&ldops->refcount); ret = ldops; } } @@ -171,7 +171,7 @@ static void put_ldops(struct tty_ldisc_o unsigned long flags; spin_lock_irqsave(&tty_ldisc_lock, flags); - ldops->refcount--; + atomic_dec(&ldops->refcount); module_put(ldops->owner); spin_unlock_irqrestore(&tty_ldisc_lock, flags); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/virtio_console.c linux-2.6.32.59-pax/drivers/char/virtio_console.c --- linux-2.6.32.59/drivers/char/virtio_console.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/virtio_console.c 2012-03-13 13:15:34.956097999 +0100 @@ -133,7 +133,9 @@ static int get_chars(u32 vtermno, char * * virtqueue, so we let the drivers do some boutique early-output thing. */ int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int)) { - virtio_cons.put_chars = put_chars; + pax_open_kernel(); + *(void **)&virtio_cons.put_chars = put_chars; + pax_close_kernel(); return hvc_instantiate(0, 0, &virtio_cons); } @@ -213,11 +215,13 @@ static int __devinit virtcons_probe(stru out_vq = vqs[1]; /* Start using the new console output. */ - virtio_cons.get_chars = get_chars; - virtio_cons.put_chars = put_chars; - virtio_cons.notifier_add = notifier_add_vio; - virtio_cons.notifier_del = notifier_del_vio; - virtio_cons.notifier_hangup = notifier_del_vio; + pax_open_kernel(); + *(void **)&virtio_cons.get_chars = get_chars; + *(void **)&virtio_cons.put_chars = put_chars; + *(void **)&virtio_cons.notifier_add = notifier_add_vio; + *(void **)&virtio_cons.notifier_del = notifier_del_vio; + *(void **)&virtio_cons.notifier_hangup = notifier_del_vio; + pax_close_kernel(); /* The first argument of hvc_alloc() is the virtual console number, so * we use zero. The second argument is the parameter for the diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/char/vt.c linux-2.6.32.59-pax/drivers/char/vt.c --- linux-2.6.32.59/drivers/char/vt.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/char/vt.c 2012-03-13 13:15:34.956097999 +0100 @@ -243,7 +243,7 @@ EXPORT_SYMBOL_GPL(unregister_vt_notifier static void notify_write(struct vc_data *vc, unsigned int unicode) { - struct vt_notifier_param param = { .vc = vc, unicode = unicode }; + struct vt_notifier_param param = { .vc = vc, .c = unicode }; atomic_notifier_call_chain(&vt_notifier_list, VT_WRITE, ¶m); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/cpuidle/sysfs.c linux-2.6.32.59-pax/drivers/cpuidle/sysfs.c --- linux-2.6.32.59/drivers/cpuidle/sysfs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/cpuidle/sysfs.c 2012-03-13 13:15:34.956097999 +0100 @@ -294,7 +294,7 @@ static struct kobj_type ktype_state_cpui .release = cpuidle_state_sysfs_release, }; -static void inline cpuidle_free_state_kobj(struct cpuidle_device *device, int i) +static inline void cpuidle_free_state_kobj(struct cpuidle_device *device, int i) { kobject_put(&device->kobjs[i]->kobj); wait_for_completion(&device->kobjs[i]->kobj_unregister); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/dma/ioat/dma_v3.c linux-2.6.32.59-pax/drivers/dma/ioat/dma_v3.c --- linux-2.6.32.59/drivers/dma/ioat/dma_v3.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/dma/ioat/dma_v3.c 2012-03-13 13:15:34.960097999 +0100 @@ -71,10 +71,10 @@ /* provide a lookup table for setting the source address in the base or * extended descriptor of an xor or pq descriptor */ -static const u8 xor_idx_to_desc __read_mostly = 0xd0; -static const u8 xor_idx_to_field[] __read_mostly = { 1, 4, 5, 6, 7, 0, 1, 2 }; -static const u8 pq_idx_to_desc __read_mostly = 0xf8; -static const u8 pq_idx_to_field[] __read_mostly = { 1, 4, 5, 0, 1, 2, 4, 5 }; +static const u8 xor_idx_to_desc = 0xd0; +static const u8 xor_idx_to_field[] = { 1, 4, 5, 6, 7, 0, 1, 2 }; +static const u8 pq_idx_to_desc = 0xf8; +static const u8 pq_idx_to_field[] = { 1, 4, 5, 0, 1, 2, 4, 5 }; static dma_addr_t xor_get_src(struct ioat_raw_descriptor *descs[2], int idx) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/amd64_edac.c linux-2.6.32.59-pax/drivers/edac/amd64_edac.c --- linux-2.6.32.59/drivers/edac/amd64_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/amd64_edac.c 2012-03-13 13:15:34.960097999 +0100 @@ -3099,7 +3099,7 @@ static void __devexit amd64_remove_one_i * PCI core identifies what devices are on a system during boot, and then * inquiry this table to see if this driver is for a given device found. */ -static const struct pci_device_id amd64_pci_table[] __devinitdata = { +static const struct pci_device_id amd64_pci_table[] __devinitconst = { { .vendor = PCI_VENDOR_ID_AMD, .device = PCI_DEVICE_ID_AMD_K8_NB_MEMCTL, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/amd76x_edac.c linux-2.6.32.59-pax/drivers/edac/amd76x_edac.c --- linux-2.6.32.59/drivers/edac/amd76x_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/amd76x_edac.c 2012-03-13 13:15:34.960097999 +0100 @@ -322,7 +322,7 @@ static void __devexit amd76x_remove_one( edac_mc_free(mci); } -static const struct pci_device_id amd76x_pci_tbl[] __devinitdata = { +static const struct pci_device_id amd76x_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(AMD, FE_GATE_700C), PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD762}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/e752x_edac.c linux-2.6.32.59-pax/drivers/edac/e752x_edac.c --- linux-2.6.32.59/drivers/edac/e752x_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/e752x_edac.c 2012-03-13 13:15:34.964097999 +0100 @@ -1282,7 +1282,7 @@ static void __devexit e752x_remove_one(s edac_mc_free(mci); } -static const struct pci_device_id e752x_pci_tbl[] __devinitdata = { +static const struct pci_device_id e752x_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, E7520}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/e7xxx_edac.c linux-2.6.32.59-pax/drivers/edac/e7xxx_edac.c --- linux-2.6.32.59/drivers/edac/e7xxx_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/e7xxx_edac.c 2012-03-13 13:15:34.964097999 +0100 @@ -526,7 +526,7 @@ static void __devexit e7xxx_remove_one(s edac_mc_free(mci); } -static const struct pci_device_id e7xxx_pci_tbl[] __devinitdata = { +static const struct pci_device_id e7xxx_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, 7205_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, E7205}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/edac_pci_sysfs.c linux-2.6.32.59-pax/drivers/edac/edac_pci_sysfs.c --- linux-2.6.32.59/drivers/edac/edac_pci_sysfs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/edac_pci_sysfs.c 2012-03-13 13:15:34.964097999 +0100 @@ -25,8 +25,8 @@ static int edac_pci_log_pe = 1; /* log static int edac_pci_log_npe = 1; /* log PCI non-parity error errors */ static int edac_pci_poll_msec = 1000; /* one second workq period */ -static atomic_t pci_parity_count = ATOMIC_INIT(0); -static atomic_t pci_nonparity_count = ATOMIC_INIT(0); +static atomic_unchecked_t pci_parity_count = ATOMIC_INIT(0); +static atomic_unchecked_t pci_nonparity_count = ATOMIC_INIT(0); static struct kobject *edac_pci_top_main_kobj; static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0); @@ -579,7 +579,7 @@ static void edac_pci_dev_parity_test(str edac_printk(KERN_CRIT, EDAC_PCI, "Signaled System Error on %s\n", pci_name(dev)); - atomic_inc(&pci_nonparity_count); + atomic_inc_unchecked(&pci_nonparity_count); } if (status & (PCI_STATUS_PARITY)) { @@ -587,7 +587,7 @@ static void edac_pci_dev_parity_test(str "Master Data Parity Error on %s\n", pci_name(dev)); - atomic_inc(&pci_parity_count); + atomic_inc_unchecked(&pci_parity_count); } if (status & (PCI_STATUS_DETECTED_PARITY)) { @@ -595,7 +595,7 @@ static void edac_pci_dev_parity_test(str "Detected Parity Error on %s\n", pci_name(dev)); - atomic_inc(&pci_parity_count); + atomic_inc_unchecked(&pci_parity_count); } } @@ -616,7 +616,7 @@ static void edac_pci_dev_parity_test(str edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " "Signaled System Error on %s\n", pci_name(dev)); - atomic_inc(&pci_nonparity_count); + atomic_inc_unchecked(&pci_nonparity_count); } if (status & (PCI_STATUS_PARITY)) { @@ -624,7 +624,7 @@ static void edac_pci_dev_parity_test(str "Master Data Parity Error on " "%s\n", pci_name(dev)); - atomic_inc(&pci_parity_count); + atomic_inc_unchecked(&pci_parity_count); } if (status & (PCI_STATUS_DETECTED_PARITY)) { @@ -632,7 +632,7 @@ static void edac_pci_dev_parity_test(str "Detected Parity Error on %s\n", pci_name(dev)); - atomic_inc(&pci_parity_count); + atomic_inc_unchecked(&pci_parity_count); } } } @@ -674,7 +674,7 @@ void edac_pci_do_parity_check(void) if (!check_pci_errors) return; - before_count = atomic_read(&pci_parity_count); + before_count = atomic_read_unchecked(&pci_parity_count); /* scan all PCI devices looking for a Parity Error on devices and * bridges. @@ -686,7 +686,7 @@ void edac_pci_do_parity_check(void) /* Only if operator has selected panic on PCI Error */ if (edac_pci_get_panic_on_pe()) { /* If the count is different 'after' from 'before' */ - if (before_count != atomic_read(&pci_parity_count)) + if (before_count != atomic_read_unchecked(&pci_parity_count)) panic("EDAC: PCI Parity Error"); } } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i3000_edac.c linux-2.6.32.59-pax/drivers/edac/i3000_edac.c --- linux-2.6.32.59/drivers/edac/i3000_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i3000_edac.c 2012-03-13 13:15:34.964097999 +0100 @@ -471,7 +471,7 @@ static void __devexit i3000_remove_one(s edac_mc_free(mci); } -static const struct pci_device_id i3000_pci_tbl[] __devinitdata = { +static const struct pci_device_id i3000_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, 3000_HB), PCI_ANY_ID, PCI_ANY_ID, 0, 0, I3000}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i3200_edac.c linux-2.6.32.59-pax/drivers/edac/i3200_edac.c --- linux-2.6.32.59/drivers/edac/i3200_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i3200_edac.c 2012-03-13 13:15:34.968097999 +0100 @@ -444,7 +444,7 @@ static void __devexit i3200_remove_one(s edac_mc_free(mci); } -static const struct pci_device_id i3200_pci_tbl[] __devinitdata = { +static const struct pci_device_id i3200_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, 3200_HB), PCI_ANY_ID, PCI_ANY_ID, 0, 0, I3200}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i5000_edac.c linux-2.6.32.59-pax/drivers/edac/i5000_edac.c --- linux-2.6.32.59/drivers/edac/i5000_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i5000_edac.c 2012-03-13 13:15:34.968097999 +0100 @@ -1516,7 +1516,7 @@ static void __devexit i5000_remove_one(s * * The "E500P" device is the first device supported. */ -static const struct pci_device_id i5000_pci_tbl[] __devinitdata = { +static const struct pci_device_id i5000_pci_tbl[] __devinitconst = { {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I5000_DEV16), .driver_data = I5000P}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i5100_edac.c linux-2.6.32.59-pax/drivers/edac/i5100_edac.c --- linux-2.6.32.59/drivers/edac/i5100_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i5100_edac.c 2012-03-13 13:15:34.968097999 +0100 @@ -944,7 +944,7 @@ static void __devexit i5100_remove_one(s edac_mc_free(mci); } -static const struct pci_device_id i5100_pci_tbl[] __devinitdata = { +static const struct pci_device_id i5100_pci_tbl[] __devinitconst = { /* Device 16, Function 0, Channel 0 Memory Map, Error Flag/Mask, ... */ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5100_16) }, { 0, } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i5400_edac.c linux-2.6.32.59-pax/drivers/edac/i5400_edac.c --- linux-2.6.32.59/drivers/edac/i5400_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i5400_edac.c 2012-03-13 13:15:34.972097999 +0100 @@ -1383,7 +1383,7 @@ static void __devexit i5400_remove_one(s * * The "E500P" device is the first device supported. */ -static const struct pci_device_id i5400_pci_tbl[] __devinitdata = { +static const struct pci_device_id i5400_pci_tbl[] __devinitconst = { {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR)}, {0,} /* 0 terminated list. */ }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i82443bxgx_edac.c linux-2.6.32.59-pax/drivers/edac/i82443bxgx_edac.c --- linux-2.6.32.59/drivers/edac/i82443bxgx_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i82443bxgx_edac.c 2012-03-13 13:15:34.972097999 +0100 @@ -381,7 +381,7 @@ static void __devexit i82443bxgx_edacmc_ EXPORT_SYMBOL_GPL(i82443bxgx_edacmc_remove_one); -static const struct pci_device_id i82443bxgx_pci_tbl[] __devinitdata = { +static const struct pci_device_id i82443bxgx_pci_tbl[] __devinitconst = { {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0)}, {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2)}, {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_0)}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i82860_edac.c linux-2.6.32.59-pax/drivers/edac/i82860_edac.c --- linux-2.6.32.59/drivers/edac/i82860_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i82860_edac.c 2012-03-13 13:15:34.972097999 +0100 @@ -271,7 +271,7 @@ static void __devexit i82860_remove_one( edac_mc_free(mci); } -static const struct pci_device_id i82860_pci_tbl[] __devinitdata = { +static const struct pci_device_id i82860_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, 82860_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, I82860}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i82875p_edac.c linux-2.6.32.59-pax/drivers/edac/i82875p_edac.c --- linux-2.6.32.59/drivers/edac/i82875p_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i82875p_edac.c 2012-03-13 13:15:34.972097999 +0100 @@ -512,7 +512,7 @@ static void __devexit i82875p_remove_one edac_mc_free(mci); } -static const struct pci_device_id i82875p_pci_tbl[] __devinitdata = { +static const struct pci_device_id i82875p_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, 82875_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, I82875P}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/i82975x_edac.c linux-2.6.32.59-pax/drivers/edac/i82975x_edac.c --- linux-2.6.32.59/drivers/edac/i82975x_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/i82975x_edac.c 2012-03-13 13:15:34.976097998 +0100 @@ -586,7 +586,7 @@ static void __devexit i82975x_remove_one edac_mc_free(mci); } -static const struct pci_device_id i82975x_pci_tbl[] __devinitdata = { +static const struct pci_device_id i82975x_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, 82975_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, I82975X diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/r82600_edac.c linux-2.6.32.59-pax/drivers/edac/r82600_edac.c --- linux-2.6.32.59/drivers/edac/r82600_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/r82600_edac.c 2012-03-13 13:15:34.976097998 +0100 @@ -374,7 +374,7 @@ static void __devexit r82600_remove_one( edac_mc_free(mci); } -static const struct pci_device_id r82600_pci_tbl[] __devinitdata = { +static const struct pci_device_id r82600_pci_tbl[] __devinitconst = { { PCI_DEVICE(PCI_VENDOR_ID_RADISYS, R82600_BRIDGE_ID) }, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/edac/x38_edac.c linux-2.6.32.59-pax/drivers/edac/x38_edac.c --- linux-2.6.32.59/drivers/edac/x38_edac.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/edac/x38_edac.c 2012-03-13 13:15:34.976097998 +0100 @@ -441,7 +441,7 @@ static void __devexit x38_remove_one(str edac_mc_free(mci); } -static const struct pci_device_id x38_pci_tbl[] __devinitdata = { +static const struct pci_device_id x38_pci_tbl[] __devinitconst = { { PCI_VEND_DEV(INTEL, X38_HB), PCI_ANY_ID, PCI_ANY_ID, 0, 0, X38}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/firewire/core-card.c linux-2.6.32.59-pax/drivers/firewire/core-card.c --- linux-2.6.32.59/drivers/firewire/core-card.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/firewire/core-card.c 2012-03-13 13:15:34.976097998 +0100 @@ -558,7 +558,7 @@ void fw_card_release(struct kref *kref) void fw_core_remove_card(struct fw_card *card) { - struct fw_card_driver dummy_driver = dummy_driver_template; + fw_card_driver_no_const dummy_driver = dummy_driver_template; card->driver->update_phy_reg(card, 4, PHY_LINK_ACTIVE | PHY_CONTENDER, 0); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/firewire/core-cdev.c linux-2.6.32.59-pax/drivers/firewire/core-cdev.c --- linux-2.6.32.59/drivers/firewire/core-cdev.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/firewire/core-cdev.c 2012-03-13 13:15:34.980097998 +0100 @@ -1141,8 +1141,7 @@ static int init_iso_resource(struct clie int ret; if ((request->channels == 0 && request->bandwidth == 0) || - request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL || - request->bandwidth < 0) + request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL) return -EINVAL; r = kmalloc(sizeof(*r), GFP_KERNEL); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/firewire/core.h linux-2.6.32.59-pax/drivers/firewire/core.h --- linux-2.6.32.59/drivers/firewire/core.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/firewire/core.h 2012-03-13 13:15:34.980097998 +0100 @@ -86,6 +86,7 @@ struct fw_card_driver { int (*stop_iso)(struct fw_iso_context *ctx); }; +typedef struct fw_card_driver __no_const fw_card_driver_no_const; void fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver, struct device *device); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/firewire/core-transaction.c linux-2.6.32.59-pax/drivers/firewire/core-transaction.c --- linux-2.6.32.59/drivers/firewire/core-transaction.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/firewire/core-transaction.c 2012-03-13 13:15:34.980097998 +0100 @@ -36,6 +36,7 @@ #include #include #include +#include #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/firmware/dmi_scan.c linux-2.6.32.59-pax/drivers/firmware/dmi_scan.c --- linux-2.6.32.59/drivers/firmware/dmi_scan.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/firmware/dmi_scan.c 2012-03-13 13:15:34.980097998 +0100 @@ -391,11 +391,6 @@ void __init dmi_scan_machine(void) } } else { - /* - * no iounmap() for that ioremap(); it would be a no-op, but - * it's so early in setup that sucker gets confused into doing - * what it shouldn't if we actually call it. - */ p = dmi_ioremap(0xF0000, 0x10000); if (p == NULL) goto error; @@ -667,7 +662,7 @@ int dmi_walk(void (*decode)(const struct if (buf == NULL) return -1; - dmi_table(buf, dmi_len, dmi_num, decode, private_data); + dmi_table((char __force_kernel *)buf, dmi_len, dmi_num, decode, private_data); iounmap(buf); return 0; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpio/vr41xx_giu.c linux-2.6.32.59-pax/drivers/gpio/vr41xx_giu.c --- linux-2.6.32.59/drivers/gpio/vr41xx_giu.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpio/vr41xx_giu.c 2012-03-13 13:15:34.984097998 +0100 @@ -204,7 +204,7 @@ static int giu_get_irq(unsigned int irq) printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n", maskl, pendl, maskh, pendh); - atomic_inc(&irq_err_count); + atomic_inc_unchecked(&irq_err_count); return -EINVAL; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_crtc.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_crtc.c --- linux-2.6.32.59/drivers/gpu/drm/drm_crtc.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_crtc.c 2012-03-13 13:15:34.984097998 +0100 @@ -1323,7 +1323,7 @@ int drm_mode_getconnector(struct drm_dev */ if ((out_resp->count_modes >= mode_count) && mode_count) { copied = 0; - mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr; + mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; list_for_each_entry(mode, &connector->modes, head) { drm_crtc_convert_to_umode(&u_mode, mode); if (copy_to_user(mode_ptr + copied, @@ -1338,8 +1338,8 @@ int drm_mode_getconnector(struct drm_dev if ((out_resp->count_props >= props_count) && props_count) { copied = 0; - prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr); - prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr); + prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); + prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) { if (connector->property_ids[i] != 0) { if (put_user(connector->property_ids[i], @@ -1361,7 +1361,7 @@ int drm_mode_getconnector(struct drm_dev if ((out_resp->count_encoders >= encoders_count) && encoders_count) { copied = 0; - encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr); + encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { if (connector->encoder_ids[i] != 0) { if (put_user(connector->encoder_ids[i], @@ -1513,7 +1513,7 @@ int drm_mode_setcrtc(struct drm_device * } for (i = 0; i < crtc_req->count_connectors; i++) { - set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr; + set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; if (get_user(out_id, &set_connectors_ptr[i])) { ret = -EFAULT; goto out; @@ -2118,7 +2118,7 @@ int drm_mode_getproperty_ioctl(struct dr out_resp->flags = property->flags; if ((out_resp->count_values >= value_count) && value_count) { - values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr; + values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; for (i = 0; i < value_count; i++) { if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { ret = -EFAULT; @@ -2131,7 +2131,7 @@ int drm_mode_getproperty_ioctl(struct dr if (property->flags & DRM_MODE_PROP_ENUM) { if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { copied = 0; - enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr; + enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; list_for_each_entry(prop_enum, &property->enum_blob_list, head) { if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { @@ -2154,7 +2154,7 @@ int drm_mode_getproperty_ioctl(struct dr if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { copied = 0; blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr; - blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr; + blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; list_for_each_entry(prop_blob, &property->enum_blob_list, head) { if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { @@ -2226,7 +2226,7 @@ int drm_mode_getblob_ioctl(struct drm_de blob = obj_to_blob(obj); if (out_resp->length == blob->length) { - blob_ptr = (void *)(unsigned long)out_resp->data; + blob_ptr = (void __user *)(unsigned long)out_resp->data; if (copy_to_user(blob_ptr, blob->data, blob->length)){ ret = -EFAULT; goto done; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_crtc_helper.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_crtc_helper.c --- linux-2.6.32.59/drivers/gpu/drm/drm_crtc_helper.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_crtc_helper.c 2012-03-13 13:15:34.984097998 +0100 @@ -573,7 +573,7 @@ static bool drm_encoder_crtc_ok(struct d struct drm_crtc *tmp; int crtc_mask = 1; - WARN(!crtc, "checking null crtc?"); + BUG_ON(!crtc); dev = crtc->dev; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_drv.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_drv.c --- linux-2.6.32.59/drivers/gpu/drm/drm_drv.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_drv.c 2012-03-13 13:15:34.988097998 +0100 @@ -417,7 +417,7 @@ int drm_ioctl(struct inode *inode, struc char *kdata = NULL; atomic_inc(&dev->ioctl_count); - atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_IOCTLS]); ++file_priv->ioctl_count; DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_fops.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_fops.c --- linux-2.6.32.59/drivers/gpu/drm/drm_fops.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_fops.c 2012-03-13 13:15:34.988097998 +0100 @@ -66,7 +66,7 @@ static int drm_setup(struct drm_device * } for (i = 0; i < ARRAY_SIZE(dev->counts); i++) - atomic_set(&dev->counts[i], 0); + atomic_set_unchecked(&dev->counts[i], 0); dev->sigdata.lock = NULL; @@ -130,9 +130,9 @@ int drm_open(struct inode *inode, struct retcode = drm_open_helper(inode, filp, dev); if (!retcode) { - atomic_inc(&dev->counts[_DRM_STAT_OPENS]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_OPENS]); spin_lock(&dev->count_lock); - if (!dev->open_count++) { + if (local_inc_return(&dev->open_count) == 1) { spin_unlock(&dev->count_lock); retcode = drm_setup(dev); goto out; @@ -435,7 +435,7 @@ int drm_release(struct inode *inode, str lock_kernel(); - DRM_DEBUG("open_count = %d\n", dev->open_count); + DRM_DEBUG("open_count = %d\n", local_read(&dev->open_count)); if (dev->driver->preclose) dev->driver->preclose(dev, file_priv); @@ -447,7 +447,7 @@ int drm_release(struct inode *inode, str DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", task_pid_nr(current), (long)old_encode_dev(file_priv->minor->device), - dev->open_count); + local_read(&dev->open_count)); /* Release any auth tokens that might point to this file_priv, (do that under the drm_global_mutex) */ @@ -529,9 +529,9 @@ int drm_release(struct inode *inode, str * End inline drm_release */ - atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_CLOSES]); spin_lock(&dev->count_lock); - if (!--dev->open_count) { + if (local_dec_and_test(&dev->open_count)) { if (atomic_read(&dev->ioctl_count)) { DRM_ERROR("Device busy: %d\n", atomic_read(&dev->ioctl_count)); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_gem.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_gem.c --- linux-2.6.32.59/drivers/gpu/drm/drm_gem.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_gem.c 2012-03-13 13:15:34.988097998 +0100 @@ -83,11 +83,11 @@ drm_gem_init(struct drm_device *dev) spin_lock_init(&dev->object_name_lock); idr_init(&dev->object_name_idr); atomic_set(&dev->object_count, 0); - atomic_set(&dev->object_memory, 0); + atomic_set_unchecked(&dev->object_memory, 0); atomic_set(&dev->pin_count, 0); - atomic_set(&dev->pin_memory, 0); + atomic_set_unchecked(&dev->pin_memory, 0); atomic_set(&dev->gtt_count, 0); - atomic_set(&dev->gtt_memory, 0); + atomic_set_unchecked(&dev->gtt_memory, 0); mm = kzalloc(sizeof(struct drm_gem_mm), GFP_KERNEL); if (!mm) { @@ -150,7 +150,7 @@ drm_gem_object_alloc(struct drm_device * goto fput; } atomic_inc(&dev->object_count); - atomic_add(obj->size, &dev->object_memory); + atomic_add_unchecked(obj->size, &dev->object_memory); return obj; fput: fput(obj->filp); @@ -429,7 +429,7 @@ drm_gem_object_free(struct kref *kref) fput(obj->filp); atomic_dec(&dev->object_count); - atomic_sub(obj->size, &dev->object_memory); + atomic_sub_unchecked(obj->size, &dev->object_memory); kfree(obj); } EXPORT_SYMBOL(drm_gem_object_free); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_info.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_info.c --- linux-2.6.32.59/drivers/gpu/drm/drm_info.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_info.c 2012-03-13 13:15:34.988097998 +0100 @@ -75,10 +75,14 @@ int drm_vm_info(struct seq_file *m, void struct drm_local_map *map; struct drm_map_list *r_list; - /* Hardcoded from _DRM_FRAME_BUFFER, - _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and - _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ - const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; + static const char * const types[] = { + [_DRM_FRAME_BUFFER] = "FB", + [_DRM_REGISTERS] = "REG", + [_DRM_SHM] = "SHM", + [_DRM_AGP] = "AGP", + [_DRM_SCATTER_GATHER] = "SG", + [_DRM_CONSISTENT] = "PCI", + [_DRM_GEM] = "GEM" }; const char *type; int i; @@ -89,7 +93,7 @@ int drm_vm_info(struct seq_file *m, void map = r_list->map; if (!map) continue; - if (map->type < 0 || map->type > 5) + if (map->type >= ARRAY_SIZE(types)) type = "??"; else type = types[map->type]; @@ -265,10 +269,10 @@ int drm_gem_object_info(struct seq_file struct drm_device *dev = node->minor->dev; seq_printf(m, "%d objects\n", atomic_read(&dev->object_count)); - seq_printf(m, "%d object bytes\n", atomic_read(&dev->object_memory)); + seq_printf(m, "%d object bytes\n", atomic_read_unchecked(&dev->object_memory)); seq_printf(m, "%d pinned\n", atomic_read(&dev->pin_count)); - seq_printf(m, "%d pin bytes\n", atomic_read(&dev->pin_memory)); - seq_printf(m, "%d gtt bytes\n", atomic_read(&dev->gtt_memory)); + seq_printf(m, "%d pin bytes\n", atomic_read_unchecked(&dev->pin_memory)); + seq_printf(m, "%d gtt bytes\n", atomic_read_unchecked(&dev->gtt_memory)); seq_printf(m, "%d gtt total\n", dev->gtt_total); return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_ioc32.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_ioc32.c --- linux-2.6.32.59/drivers/gpu/drm/drm_ioc32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_ioc32.c 2012-03-13 13:15:34.992097998 +0100 @@ -463,7 +463,7 @@ static int compat_drm_infobufs(struct fi request = compat_alloc_user_space(nbytes); if (!access_ok(VERIFY_WRITE, request, nbytes)) return -EFAULT; - list = (struct drm_buf_desc *) (request + 1); + list = (struct drm_buf_desc __user *) (request + 1); if (__put_user(count, &request->count) || __put_user(list, &request->list)) @@ -525,7 +525,7 @@ static int compat_drm_mapbufs(struct fil request = compat_alloc_user_space(nbytes); if (!access_ok(VERIFY_WRITE, request, nbytes)) return -EFAULT; - list = (struct drm_buf_pub *) (request + 1); + list = (struct drm_buf_pub __user *) (request + 1); if (__put_user(count, &request->count) || __put_user(list, &request->list)) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_ioctl.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_ioctl.c --- linux-2.6.32.59/drivers/gpu/drm/drm_ioctl.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_ioctl.c 2012-03-13 13:15:34.992097998 +0100 @@ -283,7 +283,7 @@ int drm_getstats(struct drm_device *dev, stats->data[i].value = (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0); else - stats->data[i].value = atomic_read(&dev->counts[i]); + stats->data[i].value = atomic_read_unchecked(&dev->counts[i]); stats->data[i].type = dev->types[i]; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/drm_lock.c linux-2.6.32.59-pax/drivers/gpu/drm/drm_lock.c --- linux-2.6.32.59/drivers/gpu/drm/drm_lock.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/drm_lock.c 2012-03-13 13:15:34.992097998 +0100 @@ -87,7 +87,7 @@ int drm_lock(struct drm_device *dev, voi if (drm_lock_take(&master->lock, lock->context)) { master->lock.file_priv = file_priv; master->lock.lock_time = jiffies; - atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_LOCKS]); break; /* Got lock */ } @@ -165,7 +165,7 @@ int drm_unlock(struct drm_device *dev, v return -EINVAL; } - atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_UNLOCKS]); /* kernel_context_switch isn't used by any of the x86 drm * modules but is required by the Sparc driver. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i810/i810_dma.c linux-2.6.32.59-pax/drivers/gpu/drm/i810/i810_dma.c --- linux-2.6.32.59/drivers/gpu/drm/i810/i810_dma.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i810/i810_dma.c 2012-03-13 13:15:34.992097998 +0100 @@ -952,8 +952,8 @@ static int i810_dma_vertex(struct drm_de dma->buflist[vertex->idx], vertex->discard, vertex->used); - atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); - atomic_inc(&dev->counts[_DRM_STAT_DMA]); + atomic_add_unchecked(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); sarea_priv->last_enqueue = dev_priv->counter - 1; sarea_priv->last_dispatch = (int)hw_status[5]; @@ -1115,8 +1115,8 @@ static int i810_dma_mc(struct drm_device i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used, mc->last_render); - atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); - atomic_inc(&dev->counts[_DRM_STAT_DMA]); + atomic_add_unchecked(mc->used, &dev->counts[_DRM_STAT_SECONDARY]); + atomic_inc_unchecked(&dev->counts[_DRM_STAT_DMA]); sarea_priv->last_enqueue = dev_priv->counter - 1; sarea_priv->last_dispatch = (int)hw_status[5]; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i810/i810_drv.h linux-2.6.32.59-pax/drivers/gpu/drm/i810/i810_drv.h --- linux-2.6.32.59/drivers/gpu/drm/i810/i810_drv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i810/i810_drv.h 2012-03-13 13:15:34.996097997 +0100 @@ -108,8 +108,8 @@ typedef struct drm_i810_private { int page_flipping; wait_queue_head_t irq_queue; - atomic_t irq_received; - atomic_t irq_emitted; + atomic_unchecked_t irq_received; + atomic_unchecked_t irq_emitted; int front_offset; } drm_i810_private_t; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i830/i830_drv.h linux-2.6.32.59-pax/drivers/gpu/drm/i830/i830_drv.h --- linux-2.6.32.59/drivers/gpu/drm/i830/i830_drv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i830/i830_drv.h 2012-03-13 13:15:34.996097997 +0100 @@ -115,8 +115,8 @@ typedef struct drm_i830_private { int page_flipping; wait_queue_head_t irq_queue; - atomic_t irq_received; - atomic_t irq_emitted; + atomic_unchecked_t irq_received; + atomic_unchecked_t irq_emitted; int use_mi_batchbuffer_start; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i830/i830_irq.c linux-2.6.32.59-pax/drivers/gpu/drm/i830/i830_irq.c --- linux-2.6.32.59/drivers/gpu/drm/i830/i830_irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i830/i830_irq.c 2012-03-13 13:15:34.996097997 +0100 @@ -47,7 +47,7 @@ irqreturn_t i830_driver_irq_handler(DRM_ I830_WRITE16(I830REG_INT_IDENTITY_R, temp); - atomic_inc(&dev_priv->irq_received); + atomic_inc_unchecked(&dev_priv->irq_received); wake_up_interruptible(&dev_priv->irq_queue); return IRQ_HANDLED; @@ -60,14 +60,14 @@ static int i830_emit_irq(struct drm_devi DRM_DEBUG("%s\n", __func__); - atomic_inc(&dev_priv->irq_emitted); + atomic_inc_unchecked(&dev_priv->irq_emitted); BEGIN_LP_RING(2); OUT_RING(0); OUT_RING(GFX_OP_USER_INTERRUPT); ADVANCE_LP_RING(); - return atomic_read(&dev_priv->irq_emitted); + return atomic_read_unchecked(&dev_priv->irq_emitted); } static int i830_wait_irq(struct drm_device * dev, int irq_nr) @@ -79,7 +79,7 @@ static int i830_wait_irq(struct drm_devi DRM_DEBUG("%s\n", __func__); - if (atomic_read(&dev_priv->irq_received) >= irq_nr) + if (atomic_read_unchecked(&dev_priv->irq_received) >= irq_nr) return 0; dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT; @@ -88,7 +88,7 @@ static int i830_wait_irq(struct drm_devi for (;;) { __set_current_state(TASK_INTERRUPTIBLE); - if (atomic_read(&dev_priv->irq_received) >= irq_nr) + if (atomic_read_unchecked(&dev_priv->irq_received) >= irq_nr) break; if ((signed)(end - jiffies) <= 0) { DRM_ERROR("timeout iir %x imr %x ier %x hwstam %x\n", @@ -163,8 +163,8 @@ void i830_driver_irq_preinstall(struct d I830_WRITE16(I830REG_HWSTAM, 0xffff); I830_WRITE16(I830REG_INT_MASK_R, 0x0); I830_WRITE16(I830REG_INT_ENABLE_R, 0x0); - atomic_set(&dev_priv->irq_received, 0); - atomic_set(&dev_priv->irq_emitted, 0); + atomic_set_unchecked(&dev_priv->irq_received, 0); + atomic_set_unchecked(&dev_priv->irq_emitted, 0); init_waitqueue_head(&dev_priv->irq_queue); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i915/i915_debugfs.c linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_debugfs.c --- linux-2.6.32.59/drivers/gpu/drm/i915/i915_debugfs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_debugfs.c 2012-03-13 13:15:34.996097997 +0100 @@ -192,7 +192,7 @@ static int i915_interrupt_info(struct se I915_READ(GTIMR)); } seq_printf(m, "Interrupts received: %d\n", - atomic_read(&dev_priv->irq_received)); + atomic_read_unchecked(&dev_priv->irq_received)); if (dev_priv->hw_status_page != NULL) { seq_printf(m, "Current sequence: %d\n", i915_get_gem_seqno(dev)); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i915/i915_drv.h linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_drv.h --- linux-2.6.32.59/drivers/gpu/drm/i915/i915_drv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_drv.h 2012-03-13 13:15:35.000097997 +0100 @@ -168,7 +168,7 @@ struct drm_i915_display_funcs { /* display clock increase/decrease */ /* pll clock increase/decrease */ /* clock gating init */ -}; +} __no_const; typedef struct drm_i915_private { struct drm_device *dev; @@ -197,7 +197,7 @@ typedef struct drm_i915_private { int page_flipping; wait_queue_head_t irq_queue; - atomic_t irq_received; + atomic_unchecked_t irq_received; /** Protects user_irq_refcount and irq_mask_reg */ spinlock_t user_irq_lock; /** Refcount for i915_user_irq_get() versus i915_user_irq_put(). */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i915/i915_gem.c linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_gem.c --- linux-2.6.32.59/drivers/gpu/drm/i915/i915_gem.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_gem.c 2012-03-13 13:15:35.000097997 +0100 @@ -102,7 +102,7 @@ i915_gem_get_aperture_ioctl(struct drm_d args->aper_size = dev->gtt_total; args->aper_available_size = (args->aper_size - - atomic_read(&dev->pin_memory)); + atomic_read_unchecked(&dev->pin_memory)); return 0; } @@ -495,6 +495,11 @@ i915_gem_pread_ioctl(struct drm_device * goto err; } + if (!access_ok(VERIFY_WRITE, (char __user *) (uintptr_t)args->data_ptr, args->size)) { + drm_gem_object_unreference(obj); + return -EFAULT; + } + if (i915_gem_object_needs_bit17_swizzle(obj)) { ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv); } else { @@ -969,6 +974,11 @@ i915_gem_pwrite_ioctl(struct drm_device goto err; } + if (!access_ok(VERIFY_READ, (char __user *) (uintptr_t)args->data_ptr, args->size)) { + drm_gem_object_unreference(obj); + return -EFAULT; + } + /* We can only do the GTT pwrite on untiled buffers, as otherwise * it would end up going through the fenced access, and we'll get * different detiling behavior between reading and writing. @@ -2058,7 +2068,7 @@ i915_gem_object_unbind(struct drm_gem_ob if (obj_priv->gtt_space) { atomic_dec(&dev->gtt_count); - atomic_sub(obj->size, &dev->gtt_memory); + atomic_sub_unchecked(obj->size, &dev->gtt_memory); drm_mm_put_block(obj_priv->gtt_space); obj_priv->gtt_space = NULL; @@ -2701,7 +2711,7 @@ i915_gem_object_bind_to_gtt(struct drm_g goto search_free; } atomic_inc(&dev->gtt_count); - atomic_add(obj->size, &dev->gtt_memory); + atomic_add_unchecked(obj->size, &dev->gtt_memory); /* Assert that the object is not currently in any GPU domain. As it * wasn't in the GTT, there shouldn't be any way it could have been in @@ -3755,9 +3765,9 @@ i915_gem_execbuffer(struct drm_device *d "%d/%d gtt bytes\n", atomic_read(&dev->object_count), atomic_read(&dev->pin_count), - atomic_read(&dev->object_memory), - atomic_read(&dev->pin_memory), - atomic_read(&dev->gtt_memory), + atomic_read_unchecked(&dev->object_memory), + atomic_read_unchecked(&dev->pin_memory), + atomic_read_unchecked(&dev->gtt_memory), dev->gtt_total); } goto err; @@ -3989,7 +3999,7 @@ i915_gem_object_pin(struct drm_gem_objec */ if (obj_priv->pin_count == 1) { atomic_inc(&dev->pin_count); - atomic_add(obj->size, &dev->pin_memory); + atomic_add_unchecked(obj->size, &dev->pin_memory); if (!obj_priv->active && (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0 && !list_empty(&obj_priv->list)) @@ -4022,7 +4032,7 @@ i915_gem_object_unpin(struct drm_gem_obj list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); atomic_dec(&dev->pin_count); - atomic_sub(obj->size, &dev->pin_memory); + atomic_sub_unchecked(obj->size, &dev->pin_memory); } i915_verify_inactive(dev, __FILE__, __LINE__); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i915/i915_irq.c linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_irq.c --- linux-2.6.32.59/drivers/gpu/drm/i915/i915_irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i915/i915_irq.c 2012-03-13 13:15:35.004097997 +0100 @@ -528,7 +528,7 @@ irqreturn_t i915_driver_irq_handler(DRM_ int irq_received; int ret = IRQ_NONE; - atomic_inc(&dev_priv->irq_received); + atomic_inc_unchecked(&dev_priv->irq_received); if (IS_IGDNG(dev)) return igdng_irq_handler(dev); @@ -1021,7 +1021,7 @@ void i915_driver_irq_preinstall(struct d { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - atomic_set(&dev_priv->irq_received, 0); + atomic_set_unchecked(&dev_priv->irq_received, 0); INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); INIT_WORK(&dev_priv->error_work, i915_error_work_func); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/i915/intel_sdvo.c linux-2.6.32.59-pax/drivers/gpu/drm/i915/intel_sdvo.c --- linux-2.6.32.59/drivers/gpu/drm/i915/intel_sdvo.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/i915/intel_sdvo.c 2012-03-13 13:15:35.004097997 +0100 @@ -2795,7 +2795,9 @@ bool intel_sdvo_init(struct drm_device * sdvo_priv->slave_addr = intel_sdvo_get_slave_addr(dev, output_device); /* Save the bit-banging i2c functionality for use by the DDC wrapper */ - intel_sdvo_i2c_bit_algo.functionality = intel_output->i2c_bus->algo->functionality; + pax_open_kernel(); + *(void **)&intel_sdvo_i2c_bit_algo.functionality = intel_output->i2c_bus->algo->functionality; + pax_close_kernel(); /* Read the regs to test if we can talk to the device */ for (i = 0; i < 0x40; i++) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/mga/mga_drv.h linux-2.6.32.59-pax/drivers/gpu/drm/mga/mga_drv.h --- linux-2.6.32.59/drivers/gpu/drm/mga/mga_drv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/mga/mga_drv.h 2012-03-13 13:15:35.004097997 +0100 @@ -120,9 +120,9 @@ typedef struct drm_mga_private { u32 clear_cmd; u32 maccess; - atomic_t vbl_received; /**< Number of vblanks received. */ + atomic_unchecked_t vbl_received; /**< Number of vblanks received. */ wait_queue_head_t fence_queue; - atomic_t last_fence_retired; + atomic_unchecked_t last_fence_retired; u32 next_fence_to_post; unsigned int fb_cpp; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/mga/mga_irq.c linux-2.6.32.59-pax/drivers/gpu/drm/mga/mga_irq.c --- linux-2.6.32.59/drivers/gpu/drm/mga/mga_irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/mga/mga_irq.c 2012-03-13 13:15:35.008097997 +0100 @@ -44,7 +44,7 @@ u32 mga_get_vblank_counter(struct drm_de if (crtc != 0) return 0; - return atomic_read(&dev_priv->vbl_received); + return atomic_read_unchecked(&dev_priv->vbl_received); } @@ -60,7 +60,7 @@ irqreturn_t mga_driver_irq_handler(DRM_I /* VBLANK interrupt */ if (status & MGA_VLINEPEN) { MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR); - atomic_inc(&dev_priv->vbl_received); + atomic_inc_unchecked(&dev_priv->vbl_received); drm_handle_vblank(dev, 0); handled = 1; } @@ -80,7 +80,7 @@ irqreturn_t mga_driver_irq_handler(DRM_I MGA_WRITE(MGA_PRIMEND, prim_end); } - atomic_inc(&dev_priv->last_fence_retired); + atomic_inc_unchecked(&dev_priv->last_fence_retired); DRM_WAKEUP(&dev_priv->fence_queue); handled = 1; } @@ -131,7 +131,7 @@ int mga_driver_fence_wait(struct drm_dev * using fences. */ DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * DRM_HZ, - (((cur_fence = atomic_read(&dev_priv->last_fence_retired)) + (((cur_fence = atomic_read_unchecked(&dev_priv->last_fence_retired)) - *sequence) <= (1 << 23))); *sequence = cur_fence; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/r128/r128_cce.c linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_cce.c --- linux-2.6.32.59/drivers/gpu/drm/r128/r128_cce.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_cce.c 2012-03-13 13:15:35.008097997 +0100 @@ -377,7 +377,7 @@ static int r128_do_init_cce(struct drm_d /* GH: Simple idle check. */ - atomic_set(&dev_priv->idle_count, 0); + atomic_set_unchecked(&dev_priv->idle_count, 0); /* We don't support anything other than bus-mastering ring mode, * but the ring can be in either AGP or PCI space for the ring diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/r128/r128_drv.h linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_drv.h --- linux-2.6.32.59/drivers/gpu/drm/r128/r128_drv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_drv.h 2012-03-13 13:15:35.008097997 +0100 @@ -90,14 +90,14 @@ typedef struct drm_r128_private { int is_pci; unsigned long cce_buffers_offset; - atomic_t idle_count; + atomic_unchecked_t idle_count; int page_flipping; int current_page; u32 crtc_offset; u32 crtc_offset_cntl; - atomic_t vbl_received; + atomic_unchecked_t vbl_received; u32 color_fmt; unsigned int front_offset; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/r128/r128_irq.c linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_irq.c --- linux-2.6.32.59/drivers/gpu/drm/r128/r128_irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_irq.c 2012-03-13 13:15:35.008097997 +0100 @@ -42,7 +42,7 @@ u32 r128_get_vblank_counter(struct drm_d if (crtc != 0) return 0; - return atomic_read(&dev_priv->vbl_received); + return atomic_read_unchecked(&dev_priv->vbl_received); } irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS) @@ -56,7 +56,7 @@ irqreturn_t r128_driver_irq_handler(DRM_ /* VBLANK interrupt */ if (status & R128_CRTC_VBLANK_INT) { R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK); - atomic_inc(&dev_priv->vbl_received); + atomic_inc_unchecked(&dev_priv->vbl_received); drm_handle_vblank(dev, 0); return IRQ_HANDLED; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/r128/r128_state.c linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_state.c --- linux-2.6.32.59/drivers/gpu/drm/r128/r128_state.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/r128/r128_state.c 2012-03-13 13:15:35.012097996 +0100 @@ -323,10 +323,10 @@ static void r128_clear_box(drm_r128_priv static void r128_cce_performance_boxes(drm_r128_private_t * dev_priv) { - if (atomic_read(&dev_priv->idle_count) == 0) { + if (atomic_read_unchecked(&dev_priv->idle_count) == 0) { r128_clear_box(dev_priv, 64, 4, 8, 8, 0, 255, 0); } else { - atomic_set(&dev_priv->idle_count, 0); + atomic_set_unchecked(&dev_priv->idle_count, 0); } } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/mkregtable.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/mkregtable.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/mkregtable.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/mkregtable.c 2012-03-13 13:15:35.012097996 +0100 @@ -637,14 +637,14 @@ static int parser_auth(struct table *t, regex_t mask_rex; regmatch_t match[4]; char buf[1024]; - size_t end; + long end; int len; int done = 0; int r; unsigned o; struct offset *offset; char last_reg_s[10]; - int last_reg; + unsigned long last_reg; if (regcomp (&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_atombios.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_atombios.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_atombios.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_atombios.c 2012-03-13 13:15:35.012097996 +0100 @@ -520,13 +520,13 @@ static uint16_t atombios_get_connector_o } } -struct bios_connector { +static struct bios_connector { bool valid; uint16_t line_mux; uint16_t devices; int connector_type; struct radeon_i2c_bus_rec ddc_bus; -}; +} bios_connectors[ATOM_MAX_SUPPORTED_DEVICE]; bool radeon_get_atom_connector_info_from_supported_devices_table(struct drm_device @@ -542,7 +542,6 @@ bool radeon_get_atom_connector_info_from uint8_t dac; union atom_supported_devices *supported_devices; int i, j; - struct bios_connector bios_connectors[ATOM_MAX_SUPPORTED_DEVICE]; atom_parse_data_header(ctx, index, &size, &frev, &crev, &data_offset); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_display.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_display.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_display.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_display.c 2012-03-13 13:15:35.016097996 +0100 @@ -482,7 +482,7 @@ void radeon_compute_pll(struct radeon_pl if (flags & RADEON_PLL_PREFER_CLOSEST_LOWER) { error = freq - current_freq; - error = error < 0 ? 0xffffffff : error; + error = (int32_t)error < 0 ? 0xffffffff : error; } else error = abs(current_freq - freq); vco_diff = abs(vco - best_vco); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_drv.h linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_drv.h --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_drv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_drv.h 2012-03-13 13:15:35.016097996 +0100 @@ -253,7 +253,7 @@ typedef struct drm_radeon_private { /* SW interrupt */ wait_queue_head_t swi_queue; - atomic_t swi_emitted; + atomic_unchecked_t swi_emitted; int vblank_crtc; uint32_t irq_enable_reg; uint32_t r500_disp_irq_reg; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_fence.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_fence.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_fence.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_fence.c 2012-03-13 13:15:35.020097996 +0100 @@ -47,7 +47,7 @@ int radeon_fence_emit(struct radeon_devi write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags); return 0; } - fence->seq = atomic_add_return(1, &rdev->fence_drv.seq); + fence->seq = atomic_add_return_unchecked(1, &rdev->fence_drv.seq); if (!rdev->cp.ready) { /* FIXME: cp is not running assume everythings is done right * away @@ -364,7 +364,7 @@ int radeon_fence_driver_init(struct rade return r; } WREG32(rdev->fence_drv.scratch_reg, 0); - atomic_set(&rdev->fence_drv.seq, 0); + atomic_set_unchecked(&rdev->fence_drv.seq, 0); INIT_LIST_HEAD(&rdev->fence_drv.created); INIT_LIST_HEAD(&rdev->fence_drv.emited); INIT_LIST_HEAD(&rdev->fence_drv.signaled); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon.h linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon.h --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon.h 2012-03-13 13:15:35.020097996 +0100 @@ -149,7 +149,7 @@ int radeon_pm_init(struct radeon_device */ struct radeon_fence_driver { uint32_t scratch_reg; - atomic_t seq; + atomic_unchecked_t seq; uint32_t last_seq; unsigned long count_timeout; wait_queue_head_t queue; @@ -640,7 +640,7 @@ struct radeon_asic { uint32_t offset, uint32_t obj_size); int (*clear_surface_reg)(struct radeon_device *rdev, int reg); void (*bandwidth_update)(struct radeon_device *rdev); -}; +} __no_const; /* * Asic structures diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_ioc32.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_ioc32.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_ioc32.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_ioc32.c 2012-03-13 13:15:35.020097996 +0100 @@ -368,7 +368,7 @@ static int compat_radeon_cp_setparam(str request = compat_alloc_user_space(sizeof(*request)); if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || __put_user(req32.param, &request->param) - || __put_user((void __user *)(unsigned long)req32.value, + || __put_user((unsigned long)req32.value, &request->value)) return -EFAULT; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_irq.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_irq.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_irq.c 2012-03-13 13:15:35.020097996 +0100 @@ -225,8 +225,8 @@ static int radeon_emit_irq(struct drm_de unsigned int ret; RING_LOCALS; - atomic_inc(&dev_priv->swi_emitted); - ret = atomic_read(&dev_priv->swi_emitted); + atomic_inc_unchecked(&dev_priv->swi_emitted); + ret = atomic_read_unchecked(&dev_priv->swi_emitted); BEGIN_RING(4); OUT_RING_REG(RADEON_LAST_SWI_REG, ret); @@ -352,7 +352,7 @@ int radeon_driver_irq_postinstall(struct drm_radeon_private_t *dev_priv = (drm_radeon_private_t *) dev->dev_private; - atomic_set(&dev_priv->swi_emitted, 0); + atomic_set_unchecked(&dev_priv->swi_emitted, 0); DRM_INIT_WAITQUEUE(&dev_priv->swi_queue); dev->max_vblank_count = 0x001fffff; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_state.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_state.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_state.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_state.c 2012-03-13 13:15:35.024097996 +0100 @@ -3021,7 +3021,7 @@ static int radeon_cp_getparam(struct drm { drm_radeon_private_t *dev_priv = dev->dev_private; drm_radeon_getparam_t *param = data; - int value; + int value = 0; DRM_DEBUG("pid=%d\n", DRM_CURRENTPID); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_ttm.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_ttm.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/radeon_ttm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/radeon_ttm.c 2012-03-13 13:15:35.024097996 +0100 @@ -535,27 +535,10 @@ void radeon_ttm_fini(struct radeon_devic DRM_INFO("radeon: ttm finalized\n"); } -static struct vm_operations_struct radeon_ttm_vm_ops; -static const struct vm_operations_struct *ttm_vm_ops = NULL; - -static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) -{ - struct ttm_buffer_object *bo; - int r; - - bo = (struct ttm_buffer_object *)vma->vm_private_data; - if (bo == NULL) { - return VM_FAULT_NOPAGE; - } - r = ttm_vm_ops->fault(vma, vmf); - return r; -} - int radeon_mmap(struct file *filp, struct vm_area_struct *vma) { struct drm_file *file_priv; struct radeon_device *rdev; - int r; if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) { return drm_mmap(filp, vma); @@ -563,20 +546,9 @@ int radeon_mmap(struct file *filp, struc file_priv = (struct drm_file *)filp->private_data; rdev = file_priv->minor->dev->dev_private; - if (rdev == NULL) { + if (!rdev) return -EINVAL; - } - r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev); - if (unlikely(r != 0)) { - return r; - } - if (unlikely(ttm_vm_ops == NULL)) { - ttm_vm_ops = vma->vm_ops; - radeon_ttm_vm_ops = *ttm_vm_ops; - radeon_ttm_vm_ops.fault = &radeon_ttm_fault; - } - vma->vm_ops = &radeon_ttm_vm_ops; - return 0; + return ttm_bo_mmap(filp, vma, &rdev->mman.bdev); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/radeon/rs690.c linux-2.6.32.59-pax/drivers/gpu/drm/radeon/rs690.c --- linux-2.6.32.59/drivers/gpu/drm/radeon/rs690.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/radeon/rs690.c 2012-03-13 13:15:35.024097996 +0100 @@ -302,9 +302,11 @@ void rs690_crtc_bandwidth_compute(struct if (rdev->pm.max_bandwidth.full > rdev->pm.sideport_bandwidth.full && rdev->pm.sideport_bandwidth.full) rdev->pm.max_bandwidth = rdev->pm.sideport_bandwidth; - read_delay_latency.full = rfixed_const(370 * 800 * 1000); + read_delay_latency.full = rfixed_const(800 * 1000); read_delay_latency.full = rfixed_div(read_delay_latency, rdev->pm.igp_sideport_mclk); + a.full = rfixed_const(370); + read_delay_latency.full = rfixed_mul(read_delay_latency, a); } else { if (rdev->pm.max_bandwidth.full > rdev->pm.k8_bandwidth.full && rdev->pm.k8_bandwidth.full) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/ttm/ttm_bo_vm.c linux-2.6.32.59-pax/drivers/gpu/drm/ttm/ttm_bo_vm.c --- linux-2.6.32.59/drivers/gpu/drm/ttm/ttm_bo_vm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/ttm/ttm_bo_vm.c 2012-03-13 13:15:35.028097996 +0100 @@ -73,7 +73,7 @@ static int ttm_bo_vm_fault(struct vm_are { struct ttm_buffer_object *bo = (struct ttm_buffer_object *) vma->vm_private_data; - struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_device *bdev; unsigned long bus_base; unsigned long bus_offset; unsigned long bus_size; @@ -88,6 +88,10 @@ static int ttm_bo_vm_fault(struct vm_are unsigned long address = (unsigned long)vmf->virtual_address; int retval = VM_FAULT_NOPAGE; + if (!bo) + return VM_FAULT_NOPAGE; + bdev = bo->bdev; + /* * Work around locking order reversal in fault / nopfn * between mmap_sem and bo_reserve: Perform a trylock operation diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/ttm/ttm_global.c linux-2.6.32.59-pax/drivers/gpu/drm/ttm/ttm_global.c --- linux-2.6.32.59/drivers/gpu/drm/ttm/ttm_global.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/ttm/ttm_global.c 2012-03-13 13:15:35.028097996 +0100 @@ -36,7 +36,7 @@ struct ttm_global_item { struct mutex mutex; void *object; - int refcount; + atomic_t refcount; }; static struct ttm_global_item glob[TTM_GLOBAL_NUM]; @@ -49,7 +49,7 @@ void ttm_global_init(void) struct ttm_global_item *item = &glob[i]; mutex_init(&item->mutex); item->object = NULL; - item->refcount = 0; + atomic_set(&item->refcount, 0); } } @@ -59,7 +59,7 @@ void ttm_global_release(void) for (i = 0; i < TTM_GLOBAL_NUM; ++i) { struct ttm_global_item *item = &glob[i]; BUG_ON(item->object != NULL); - BUG_ON(item->refcount != 0); + BUG_ON(atomic_read(&item->refcount) != 0); } } @@ -70,7 +70,7 @@ int ttm_global_item_ref(struct ttm_globa void *object; mutex_lock(&item->mutex); - if (item->refcount == 0) { + if (atomic_read(&item->refcount) == 0) { item->object = kzalloc(ref->size, GFP_KERNEL); if (unlikely(item->object == NULL)) { ret = -ENOMEM; @@ -83,7 +83,7 @@ int ttm_global_item_ref(struct ttm_globa goto out_err; } - ++item->refcount; + atomic_inc(&item->refcount); ref->object = item->object; object = item->object; mutex_unlock(&item->mutex); @@ -100,9 +100,9 @@ void ttm_global_item_unref(struct ttm_gl struct ttm_global_item *item = &glob[ref->global_type]; mutex_lock(&item->mutex); - BUG_ON(item->refcount == 0); + BUG_ON(atomic_read(&item->refcount) == 0); BUG_ON(ref->object != item->object); - if (--item->refcount == 0) { + if (atomic_dec_and_test(&item->refcount)) { ref->release(ref); item->object = NULL; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/via/via_drv.h linux-2.6.32.59-pax/drivers/gpu/drm/via/via_drv.h --- linux-2.6.32.59/drivers/gpu/drm/via/via_drv.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/via/via_drv.h 2012-03-13 13:15:35.028097996 +0100 @@ -51,7 +51,7 @@ typedef struct drm_via_ring_buffer { typedef uint32_t maskarray_t[5]; typedef struct drm_via_irq { - atomic_t irq_received; + atomic_unchecked_t irq_received; uint32_t pending_mask; uint32_t enable_mask; wait_queue_head_t irq_queue; @@ -75,7 +75,7 @@ typedef struct drm_via_private { struct timeval last_vblank; int last_vblank_valid; unsigned usec_per_vblank; - atomic_t vbl_received; + atomic_unchecked_t vbl_received; drm_via_state_t hc_state; char pci_buf[VIA_PCI_BUF_SIZE]; const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE]; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/gpu/drm/via/via_irq.c linux-2.6.32.59-pax/drivers/gpu/drm/via/via_irq.c --- linux-2.6.32.59/drivers/gpu/drm/via/via_irq.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/gpu/drm/via/via_irq.c 2012-03-13 13:15:35.028097996 +0100 @@ -102,7 +102,7 @@ u32 via_get_vblank_counter(struct drm_de if (crtc != 0) return 0; - return atomic_read(&dev_priv->vbl_received); + return atomic_read_unchecked(&dev_priv->vbl_received); } irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS) @@ -117,8 +117,8 @@ irqreturn_t via_driver_irq_handler(DRM_I status = VIA_READ(VIA_REG_INTERRUPT); if (status & VIA_IRQ_VBLANK_PENDING) { - atomic_inc(&dev_priv->vbl_received); - if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) { + atomic_inc_unchecked(&dev_priv->vbl_received); + if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0x0F)) { do_gettimeofday(&cur_vblank); if (dev_priv->last_vblank_valid) { dev_priv->usec_per_vblank = @@ -128,7 +128,7 @@ irqreturn_t via_driver_irq_handler(DRM_I dev_priv->last_vblank = cur_vblank; dev_priv->last_vblank_valid = 1; } - if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) { + if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0xFF)) { DRM_DEBUG("US per vblank is: %u\n", dev_priv->usec_per_vblank); } @@ -138,7 +138,7 @@ irqreturn_t via_driver_irq_handler(DRM_I for (i = 0; i < dev_priv->num_irqs; ++i) { if (status & cur_irq->pending_mask) { - atomic_inc(&cur_irq->irq_received); + atomic_inc_unchecked(&cur_irq->irq_received); DRM_WAKEUP(&cur_irq->irq_queue); handled = 1; if (dev_priv->irq_map[drm_via_irq_dma0_td] == i) { @@ -244,11 +244,11 @@ via_driver_irq_wait(struct drm_device * DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, ((VIA_READ(masks[irq][2]) & masks[irq][3]) == masks[irq][4])); - cur_irq_sequence = atomic_read(&cur_irq->irq_received); + cur_irq_sequence = atomic_read_unchecked(&cur_irq->irq_received); } else { DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ, (((cur_irq_sequence = - atomic_read(&cur_irq->irq_received)) - + atomic_read_unchecked(&cur_irq->irq_received)) - *sequence) <= (1 << 23))); } *sequence = cur_irq_sequence; @@ -286,7 +286,7 @@ void via_driver_irq_preinstall(struct dr } for (i = 0; i < dev_priv->num_irqs; ++i) { - atomic_set(&cur_irq->irq_received, 0); + atomic_set_unchecked(&cur_irq->irq_received, 0); cur_irq->enable_mask = dev_priv->irq_masks[i][0]; cur_irq->pending_mask = dev_priv->irq_masks[i][1]; DRM_INIT_WAITQUEUE(&cur_irq->irq_queue); @@ -368,7 +368,7 @@ int via_wait_irq(struct drm_device *dev, switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) { case VIA_IRQ_RELATIVE: irqwait->request.sequence += - atomic_read(&cur_irq->irq_received); + atomic_read_unchecked(&cur_irq->irq_received); irqwait->request.type &= ~_DRM_VBLANK_RELATIVE; case VIA_IRQ_ABSOLUTE: break; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/hid/hid-core.c linux-2.6.32.59-pax/drivers/hid/hid-core.c --- linux-2.6.32.59/drivers/hid/hid-core.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/hid/hid-core.c 2012-03-13 13:15:35.028097996 +0100 @@ -1752,7 +1752,7 @@ static bool hid_ignore(struct hid_device int hid_add_device(struct hid_device *hdev) { - static atomic_t id = ATOMIC_INIT(0); + static atomic_unchecked_t id = ATOMIC_INIT(0); int ret; if (WARN_ON(hdev->status & HID_STAT_ADDED)) @@ -1766,7 +1766,7 @@ int hid_add_device(struct hid_device *hd /* XXX hack, any other cleaner solution after the driver core * is converted to allow more than 20 bytes as the device name? */ dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus, - hdev->vendor, hdev->product, atomic_inc_return(&id)); + hdev->vendor, hdev->product, atomic_inc_return_unchecked(&id)); ret = device_add(&hdev->dev); if (!ret) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/hid/usbhid/hiddev.c linux-2.6.32.59-pax/drivers/hid/usbhid/hiddev.c --- linux-2.6.32.59/drivers/hid/usbhid/hiddev.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/hid/usbhid/hiddev.c 2012-03-13 13:15:35.032097995 +0100 @@ -617,7 +617,7 @@ static long hiddev_ioctl(struct file *fi return put_user(HID_VERSION, (int __user *)arg); case HIDIOCAPPLICATION: - if (arg < 0 || arg >= hid->maxapplication) + if (arg >= hid->maxapplication) return -EINVAL; for (i = 0; i < hid->maxcollection; i++) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/hwmon/lis3lv02d.c linux-2.6.32.59-pax/drivers/hwmon/lis3lv02d.c --- linux-2.6.32.59/drivers/hwmon/lis3lv02d.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/hwmon/lis3lv02d.c 2012-03-13 13:15:35.032097995 +0100 @@ -146,7 +146,7 @@ static irqreturn_t lis302dl_interrupt(in * the lid is closed. This leads to interrupts as soon as a little move * is done. */ - atomic_inc(&lis3_dev.count); + atomic_inc_unchecked(&lis3_dev.count); wake_up_interruptible(&lis3_dev.misc_wait); kill_fasync(&lis3_dev.async_queue, SIGIO, POLL_IN); @@ -160,7 +160,7 @@ static int lis3lv02d_misc_open(struct in if (test_and_set_bit(0, &lis3_dev.misc_opened)) return -EBUSY; /* already open */ - atomic_set(&lis3_dev.count, 0); + atomic_set_unchecked(&lis3_dev.count, 0); /* * The sensor can generate interrupts for free-fall and direction @@ -206,7 +206,7 @@ static ssize_t lis3lv02d_misc_read(struc add_wait_queue(&lis3_dev.misc_wait, &wait); while (true) { set_current_state(TASK_INTERRUPTIBLE); - data = atomic_xchg(&lis3_dev.count, 0); + data = atomic_xchg_unchecked(&lis3_dev.count, 0); if (data) break; @@ -244,7 +244,7 @@ out: static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait) { poll_wait(file, &lis3_dev.misc_wait, wait); - if (atomic_read(&lis3_dev.count)) + if (atomic_read_unchecked(&lis3_dev.count)) return POLLIN | POLLRDNORM; return 0; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/hwmon/lis3lv02d.h linux-2.6.32.59-pax/drivers/hwmon/lis3lv02d.h --- linux-2.6.32.59/drivers/hwmon/lis3lv02d.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/hwmon/lis3lv02d.h 2012-03-13 13:15:35.032097995 +0100 @@ -201,7 +201,7 @@ struct lis3lv02d { struct input_polled_dev *idev; /* input device */ struct platform_device *pdev; /* platform device */ - atomic_t count; /* interrupt count after last read */ + atomic_unchecked_t count; /* interrupt count after last read */ int xcalib; /* calibrated null value for x */ int ycalib; /* calibrated null value for y */ int zcalib; /* calibrated null value for z */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/hwmon/sht15.c linux-2.6.32.59-pax/drivers/hwmon/sht15.c --- linux-2.6.32.59/drivers/hwmon/sht15.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/hwmon/sht15.c 2012-03-13 13:15:35.032097995 +0100 @@ -112,7 +112,7 @@ struct sht15_data { int supply_uV; int supply_uV_valid; struct work_struct update_supply_work; - atomic_t interrupt_handled; + atomic_unchecked_t interrupt_handled; }; /** @@ -245,13 +245,13 @@ static inline int sht15_update_single_va return ret; gpio_direction_input(data->pdata->gpio_data); - atomic_set(&data->interrupt_handled, 0); + atomic_set_unchecked(&data->interrupt_handled, 0); enable_irq(gpio_to_irq(data->pdata->gpio_data)); if (gpio_get_value(data->pdata->gpio_data) == 0) { disable_irq_nosync(gpio_to_irq(data->pdata->gpio_data)); /* Only relevant if the interrupt hasn't occured. */ - if (!atomic_read(&data->interrupt_handled)) + if (!atomic_read_unchecked(&data->interrupt_handled)) schedule_work(&data->read_work); } ret = wait_event_timeout(data->wait_queue, @@ -398,7 +398,7 @@ static irqreturn_t sht15_interrupt_fired struct sht15_data *data = d; /* First disable the interrupt */ disable_irq_nosync(irq); - atomic_inc(&data->interrupt_handled); + atomic_inc_unchecked(&data->interrupt_handled); /* Then schedule a reading work struct */ if (data->flag != SHT15_READING_NOTHING) schedule_work(&data->read_work); @@ -449,11 +449,11 @@ static void sht15_bh_read_data(struct wo here as could have gone low in meantime so verify it hasn't! */ - atomic_set(&data->interrupt_handled, 0); + atomic_set_unchecked(&data->interrupt_handled, 0); enable_irq(gpio_to_irq(data->pdata->gpio_data)); /* If still not occured or another handler has been scheduled */ if (gpio_get_value(data->pdata->gpio_data) - || atomic_read(&data->interrupt_handled)) + || atomic_read_unchecked(&data->interrupt_handled)) return; } /* Read the data back from the device */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/hwmon/w83791d.c linux-2.6.32.59-pax/drivers/hwmon/w83791d.c --- linux-2.6.32.59/drivers/hwmon/w83791d.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/hwmon/w83791d.c 2012-03-13 13:15:35.036097995 +0100 @@ -330,8 +330,8 @@ static int w83791d_detect(struct i2c_cli struct i2c_board_info *info); static int w83791d_remove(struct i2c_client *client); -static int w83791d_read(struct i2c_client *client, u8 register); -static int w83791d_write(struct i2c_client *client, u8 register, u8 value); +static int w83791d_read(struct i2c_client *client, u8 reg); +static int w83791d_write(struct i2c_client *client, u8 reg, u8 value); static struct w83791d_data *w83791d_update_device(struct device *dev); #ifdef DEBUG diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/i2c/busses/i2c-amd756-s4882.c linux-2.6.32.59-pax/drivers/i2c/busses/i2c-amd756-s4882.c --- linux-2.6.32.59/drivers/i2c/busses/i2c-amd756-s4882.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/i2c/busses/i2c-amd756-s4882.c 2012-03-13 13:15:35.036097995 +0100 @@ -43,7 +43,7 @@ extern struct i2c_adapter amd756_smbus; static struct i2c_adapter *s4882_adapter; -static struct i2c_algorithm *s4882_algo; +static i2c_algorithm_no_const *s4882_algo; /* Wrapper access functions for multiplexed SMBus */ static DEFINE_MUTEX(amd756_lock); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/i2c/busses/i2c-nforce2-s4985.c linux-2.6.32.59-pax/drivers/i2c/busses/i2c-nforce2-s4985.c --- linux-2.6.32.59/drivers/i2c/busses/i2c-nforce2-s4985.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/i2c/busses/i2c-nforce2-s4985.c 2012-03-13 13:15:35.036097995 +0100 @@ -41,7 +41,7 @@ extern struct i2c_adapter *nforce2_smbus; static struct i2c_adapter *s4985_adapter; -static struct i2c_algorithm *s4985_algo; +static i2c_algorithm_no_const *s4985_algo; /* Wrapper access functions for multiplexed SMBus */ static DEFINE_MUTEX(nforce2_lock); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/aec62xx.c linux-2.6.32.59-pax/drivers/ide/aec62xx.c --- linux-2.6.32.59/drivers/ide/aec62xx.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/aec62xx.c 2012-03-13 13:15:35.036097995 +0100 @@ -180,7 +180,7 @@ static const struct ide_port_ops atp86x_ .cable_detect = atp86x_cable_detect, }; -static const struct ide_port_info aec62xx_chipsets[] __devinitdata = { +static const struct ide_port_info aec62xx_chipsets[] __devinitconst = { { /* 0: AEC6210 */ .name = DRV_NAME, .init_chipset = init_chipset_aec62xx, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/alim15x3.c linux-2.6.32.59-pax/drivers/ide/alim15x3.c --- linux-2.6.32.59/drivers/ide/alim15x3.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/alim15x3.c 2012-03-13 13:15:35.040097995 +0100 @@ -509,7 +509,7 @@ static const struct ide_dma_ops ali_dma_ .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info ali15x3_chipset __devinitdata = { +static const struct ide_port_info ali15x3_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_ali15x3, .init_hwif = init_hwif_ali15x3, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/amd74xx.c linux-2.6.32.59-pax/drivers/ide/amd74xx.c --- linux-2.6.32.59/drivers/ide/amd74xx.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/amd74xx.c 2012-03-13 13:15:35.040097995 +0100 @@ -221,7 +221,7 @@ static const struct ide_port_ops amd_por .udma_mask = udma, \ } -static const struct ide_port_info amd74xx_chipsets[] __devinitdata = { +static const struct ide_port_info amd74xx_chipsets[] __devinitconst = { /* 0: AMD7401 */ DECLARE_AMD_DEV(0x00, ATA_UDMA2), /* 1: AMD7409 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA4), /* 2: AMD7411/7441 */ DECLARE_AMD_DEV(ATA_SWDMA2, ATA_UDMA5), diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/atiixp.c linux-2.6.32.59-pax/drivers/ide/atiixp.c --- linux-2.6.32.59/drivers/ide/atiixp.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/atiixp.c 2012-03-13 13:15:35.040097995 +0100 @@ -137,7 +137,7 @@ static const struct ide_port_ops atiixp_ .cable_detect = atiixp_cable_detect, }; -static const struct ide_port_info atiixp_pci_info[] __devinitdata = { +static const struct ide_port_info atiixp_pci_info[] __devinitconst = { { /* 0: IXP200/300/400/700 */ .name = DRV_NAME, .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/cmd64x.c linux-2.6.32.59-pax/drivers/ide/cmd64x.c --- linux-2.6.32.59/drivers/ide/cmd64x.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/cmd64x.c 2012-03-13 13:15:35.040097995 +0100 @@ -372,7 +372,7 @@ static const struct ide_dma_ops cmd646_r .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info cmd64x_chipsets[] __devinitdata = { +static const struct ide_port_info cmd64x_chipsets[] __devinitconst = { { /* 0: CMD643 */ .name = DRV_NAME, .init_chipset = init_chipset_cmd64x, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/cs5520.c linux-2.6.32.59-pax/drivers/ide/cs5520.c --- linux-2.6.32.59/drivers/ide/cs5520.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/cs5520.c 2012-03-13 13:15:35.040097995 +0100 @@ -93,7 +93,7 @@ static const struct ide_port_ops cs5520_ .set_dma_mode = cs5520_set_dma_mode, }; -static const struct ide_port_info cyrix_chipset __devinitdata = { +static const struct ide_port_info cyrix_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { { 0x60, 0x01, 0x01 }, { 0x60, 0x02, 0x02 } }, .port_ops = &cs5520_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/cs5530.c linux-2.6.32.59-pax/drivers/ide/cs5530.c --- linux-2.6.32.59/drivers/ide/cs5530.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/cs5530.c 2012-03-13 13:15:35.044097995 +0100 @@ -244,7 +244,7 @@ static const struct ide_port_ops cs5530_ .udma_filter = cs5530_udma_filter, }; -static const struct ide_port_info cs5530_chipset __devinitdata = { +static const struct ide_port_info cs5530_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_cs5530, .init_hwif = init_hwif_cs5530, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/cs5535.c linux-2.6.32.59-pax/drivers/ide/cs5535.c --- linux-2.6.32.59/drivers/ide/cs5535.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/cs5535.c 2012-03-13 13:15:35.044097995 +0100 @@ -170,7 +170,7 @@ static const struct ide_port_ops cs5535_ .cable_detect = cs5535_cable_detect, }; -static const struct ide_port_info cs5535_chipset __devinitdata = { +static const struct ide_port_info cs5535_chipset __devinitconst = { .name = DRV_NAME, .port_ops = &cs5535_port_ops, .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/cy82c693.c linux-2.6.32.59-pax/drivers/ide/cy82c693.c --- linux-2.6.32.59/drivers/ide/cy82c693.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/cy82c693.c 2012-03-13 13:15:35.044097995 +0100 @@ -288,7 +288,7 @@ static const struct ide_port_ops cy82c69 .set_dma_mode = cy82c693_set_dma_mode, }; -static const struct ide_port_info cy82c693_chipset __devinitdata = { +static const struct ide_port_info cy82c693_chipset __devinitconst = { .name = DRV_NAME, .init_iops = init_iops_cy82c693, .port_ops = &cy82c693_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/hpt366.c linux-2.6.32.59-pax/drivers/ide/hpt366.c --- linux-2.6.32.59/drivers/ide/hpt366.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/hpt366.c 2012-03-13 13:15:35.044097995 +0100 @@ -507,7 +507,7 @@ static struct hpt_timings hpt37x_timings } }; -static const struct hpt_info hpt36x __devinitdata = { +static const struct hpt_info hpt36x __devinitconst = { .chip_name = "HPT36x", .chip_type = HPT36x, .udma_mask = HPT366_ALLOW_ATA66_3 ? (HPT366_ALLOW_ATA66_4 ? ATA_UDMA4 : ATA_UDMA3) : ATA_UDMA2, @@ -515,7 +515,7 @@ static const struct hpt_info hpt36x __de .timings = &hpt36x_timings }; -static const struct hpt_info hpt370 __devinitdata = { +static const struct hpt_info hpt370 __devinitconst = { .chip_name = "HPT370", .chip_type = HPT370, .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, @@ -523,7 +523,7 @@ static const struct hpt_info hpt370 __de .timings = &hpt37x_timings }; -static const struct hpt_info hpt370a __devinitdata = { +static const struct hpt_info hpt370a __devinitconst = { .chip_name = "HPT370A", .chip_type = HPT370A, .udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4, @@ -531,7 +531,7 @@ static const struct hpt_info hpt370a __d .timings = &hpt37x_timings }; -static const struct hpt_info hpt374 __devinitdata = { +static const struct hpt_info hpt374 __devinitconst = { .chip_name = "HPT374", .chip_type = HPT374, .udma_mask = ATA_UDMA5, @@ -539,7 +539,7 @@ static const struct hpt_info hpt374 __de .timings = &hpt37x_timings }; -static const struct hpt_info hpt372 __devinitdata = { +static const struct hpt_info hpt372 __devinitconst = { .chip_name = "HPT372", .chip_type = HPT372, .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -547,7 +547,7 @@ static const struct hpt_info hpt372 __de .timings = &hpt37x_timings }; -static const struct hpt_info hpt372a __devinitdata = { +static const struct hpt_info hpt372a __devinitconst = { .chip_name = "HPT372A", .chip_type = HPT372A, .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -555,7 +555,7 @@ static const struct hpt_info hpt372a __d .timings = &hpt37x_timings }; -static const struct hpt_info hpt302 __devinitdata = { +static const struct hpt_info hpt302 __devinitconst = { .chip_name = "HPT302", .chip_type = HPT302, .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -563,7 +563,7 @@ static const struct hpt_info hpt302 __de .timings = &hpt37x_timings }; -static const struct hpt_info hpt371 __devinitdata = { +static const struct hpt_info hpt371 __devinitconst = { .chip_name = "HPT371", .chip_type = HPT371, .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -571,7 +571,7 @@ static const struct hpt_info hpt371 __de .timings = &hpt37x_timings }; -static const struct hpt_info hpt372n __devinitdata = { +static const struct hpt_info hpt372n __devinitconst = { .chip_name = "HPT372N", .chip_type = HPT372N, .udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -579,7 +579,7 @@ static const struct hpt_info hpt372n __d .timings = &hpt37x_timings }; -static const struct hpt_info hpt302n __devinitdata = { +static const struct hpt_info hpt302n __devinitconst = { .chip_name = "HPT302N", .chip_type = HPT302N, .udma_mask = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -587,7 +587,7 @@ static const struct hpt_info hpt302n __d .timings = &hpt37x_timings }; -static const struct hpt_info hpt371n __devinitdata = { +static const struct hpt_info hpt371n __devinitconst = { .chip_name = "HPT371N", .chip_type = HPT371N, .udma_mask = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5, @@ -1422,7 +1422,7 @@ static const struct ide_dma_ops hpt36x_d .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info hpt366_chipsets[] __devinitdata = { +static const struct ide_port_info hpt366_chipsets[] __devinitconst = { { /* 0: HPT36x */ .name = DRV_NAME, .init_chipset = init_chipset_hpt366, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/ide-cd.c linux-2.6.32.59-pax/drivers/ide/ide-cd.c --- linux-2.6.32.59/drivers/ide/ide-cd.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/ide-cd.c 2012-03-13 13:15:35.048097995 +0100 @@ -774,7 +774,7 @@ static void cdrom_do_block_pc(ide_drive_ alignment = queue_dma_alignment(q) | q->dma_pad_mask; if ((unsigned long)buf & alignment || blk_rq_bytes(rq) & q->dma_pad_mask - || object_is_on_stack(buf)) + || object_starts_on_stack(buf)) drive->dma = 0; } } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/ide-pci-generic.c linux-2.6.32.59-pax/drivers/ide/ide-pci-generic.c --- linux-2.6.32.59/drivers/ide/ide-pci-generic.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/ide-pci-generic.c 2012-03-13 13:15:35.048097995 +0100 @@ -53,7 +53,7 @@ static const struct ide_port_ops netcell .udma_mask = ATA_UDMA6, \ } -static const struct ide_port_info generic_chipsets[] __devinitdata = { +static const struct ide_port_info generic_chipsets[] __devinitconst = { /* 0: Unknown */ DECLARE_GENERIC_PCI_DEV(0), diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/it8172.c linux-2.6.32.59-pax/drivers/ide/it8172.c --- linux-2.6.32.59/drivers/ide/it8172.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/it8172.c 2012-03-13 13:15:35.048097995 +0100 @@ -115,7 +115,7 @@ static const struct ide_port_ops it8172_ .set_dma_mode = it8172_set_dma_mode, }; -static const struct ide_port_info it8172_port_info __devinitdata = { +static const struct ide_port_info it8172_port_info __devinitconst = { .name = DRV_NAME, .port_ops = &it8172_port_ops, .enablebits = { {0x41, 0x80, 0x80}, {0x00, 0x00, 0x00} }, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/it8213.c linux-2.6.32.59-pax/drivers/ide/it8213.c --- linux-2.6.32.59/drivers/ide/it8213.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/it8213.c 2012-03-13 13:15:35.048097995 +0100 @@ -156,7 +156,7 @@ static const struct ide_port_ops it8213_ .cable_detect = it8213_cable_detect, }; -static const struct ide_port_info it8213_chipset __devinitdata = { +static const struct ide_port_info it8213_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { {0x41, 0x80, 0x80} }, .port_ops = &it8213_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/it821x.c linux-2.6.32.59-pax/drivers/ide/it821x.c --- linux-2.6.32.59/drivers/ide/it821x.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/it821x.c 2012-03-13 13:15:35.052097994 +0100 @@ -627,7 +627,7 @@ static const struct ide_port_ops it821x_ .cable_detect = it821x_cable_detect, }; -static const struct ide_port_info it821x_chipset __devinitdata = { +static const struct ide_port_info it821x_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_it821x, .init_hwif = init_hwif_it821x, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/jmicron.c linux-2.6.32.59-pax/drivers/ide/jmicron.c --- linux-2.6.32.59/drivers/ide/jmicron.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/jmicron.c 2012-03-13 13:15:35.052097994 +0100 @@ -102,7 +102,7 @@ static const struct ide_port_ops jmicron .cable_detect = jmicron_cable_detect, }; -static const struct ide_port_info jmicron_chipset __devinitdata = { +static const struct ide_port_info jmicron_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } }, .port_ops = &jmicron_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/ns87415.c linux-2.6.32.59-pax/drivers/ide/ns87415.c --- linux-2.6.32.59/drivers/ide/ns87415.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/ns87415.c 2012-03-13 13:15:35.052097994 +0100 @@ -293,7 +293,7 @@ static const struct ide_dma_ops ns87415_ .dma_sff_read_status = superio_dma_sff_read_status, }; -static const struct ide_port_info ns87415_chipset __devinitdata = { +static const struct ide_port_info ns87415_chipset __devinitconst = { .name = DRV_NAME, .init_hwif = init_hwif_ns87415, .tp_ops = &ns87415_tp_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/opti621.c linux-2.6.32.59-pax/drivers/ide/opti621.c --- linux-2.6.32.59/drivers/ide/opti621.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/opti621.c 2012-03-13 13:15:35.052097994 +0100 @@ -202,7 +202,7 @@ static const struct ide_port_ops opti621 .set_pio_mode = opti621_set_pio_mode, }; -static const struct ide_port_info opti621_chipset __devinitdata = { +static const struct ide_port_info opti621_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} }, .port_ops = &opti621_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/pdc202xx_new.c linux-2.6.32.59-pax/drivers/ide/pdc202xx_new.c --- linux-2.6.32.59/drivers/ide/pdc202xx_new.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/pdc202xx_new.c 2012-03-13 13:15:35.052097994 +0100 @@ -465,7 +465,7 @@ static const struct ide_port_ops pdcnew_ .udma_mask = udma, \ } -static const struct ide_port_info pdcnew_chipsets[] __devinitdata = { +static const struct ide_port_info pdcnew_chipsets[] __devinitconst = { /* 0: PDC202{68,70} */ DECLARE_PDCNEW_DEV(ATA_UDMA5), /* 1: PDC202{69,71,75,76,77} */ DECLARE_PDCNEW_DEV(ATA_UDMA6), }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/pdc202xx_old.c linux-2.6.32.59-pax/drivers/ide/pdc202xx_old.c --- linux-2.6.32.59/drivers/ide/pdc202xx_old.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/pdc202xx_old.c 2012-03-13 13:15:35.056097994 +0100 @@ -285,7 +285,7 @@ static const struct ide_dma_ops pdc2026x .max_sectors = sectors, \ } -static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = { +static const struct ide_port_info pdc202xx_chipsets[] __devinitconst = { { /* 0: PDC20246 */ .name = DRV_NAME, .init_chipset = init_chipset_pdc202xx, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/piix.c linux-2.6.32.59-pax/drivers/ide/piix.c --- linux-2.6.32.59/drivers/ide/piix.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/piix.c 2012-03-13 13:15:35.060097994 +0100 @@ -344,7 +344,7 @@ static const struct ide_port_ops ich_por .udma_mask = udma, \ } -static const struct ide_port_info piix_pci_info[] __devinitdata = { +static const struct ide_port_info piix_pci_info[] __devinitconst = { /* 0: MPIIX */ { /* * MPIIX actually has only a single IDE channel mapped to diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/rz1000.c linux-2.6.32.59-pax/drivers/ide/rz1000.c --- linux-2.6.32.59/drivers/ide/rz1000.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/rz1000.c 2012-03-13 13:15:35.064097994 +0100 @@ -38,7 +38,7 @@ static int __devinit rz1000_disable_read } } -static const struct ide_port_info rz1000_chipset __devinitdata = { +static const struct ide_port_info rz1000_chipset __devinitconst = { .name = DRV_NAME, .host_flags = IDE_HFLAG_NO_DMA, }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/sc1200.c linux-2.6.32.59-pax/drivers/ide/sc1200.c --- linux-2.6.32.59/drivers/ide/sc1200.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/sc1200.c 2012-03-13 13:15:35.064097994 +0100 @@ -290,7 +290,7 @@ static const struct ide_dma_ops sc1200_d .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info sc1200_chipset __devinitdata = { +static const struct ide_port_info sc1200_chipset __devinitconst = { .name = DRV_NAME, .port_ops = &sc1200_port_ops, .dma_ops = &sc1200_dma_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/scc_pata.c linux-2.6.32.59-pax/drivers/ide/scc_pata.c --- linux-2.6.32.59/drivers/ide/scc_pata.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/scc_pata.c 2012-03-13 13:15:35.068097993 +0100 @@ -811,7 +811,7 @@ static const struct ide_dma_ops scc_dma_ .dma_sff_read_status = scc_dma_sff_read_status, }; -static const struct ide_port_info scc_chipset __devinitdata = { +static const struct ide_port_info scc_chipset __devinitconst = { .name = "sccIDE", .init_iops = init_iops_scc, .init_dma = scc_init_dma, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/serverworks.c linux-2.6.32.59-pax/drivers/ide/serverworks.c --- linux-2.6.32.59/drivers/ide/serverworks.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/serverworks.c 2012-03-13 13:15:35.072097993 +0100 @@ -353,7 +353,7 @@ static const struct ide_port_ops svwks_p .cable_detect = svwks_cable_detect, }; -static const struct ide_port_info serverworks_chipsets[] __devinitdata = { +static const struct ide_port_info serverworks_chipsets[] __devinitconst = { { /* 0: OSB4 */ .name = DRV_NAME, .init_chipset = init_chipset_svwks, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/siimage.c linux-2.6.32.59-pax/drivers/ide/siimage.c --- linux-2.6.32.59/drivers/ide/siimage.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/siimage.c 2012-03-13 13:15:35.072097993 +0100 @@ -719,7 +719,7 @@ static const struct ide_dma_ops sil_dma_ .udma_mask = ATA_UDMA6, \ } -static const struct ide_port_info siimage_chipsets[] __devinitdata = { +static const struct ide_port_info siimage_chipsets[] __devinitconst = { /* 0: SiI680 */ DECLARE_SII_DEV(&sil_pata_port_ops), /* 1: SiI3112 */ DECLARE_SII_DEV(&sil_sata_port_ops) }; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/sis5513.c linux-2.6.32.59-pax/drivers/ide/sis5513.c --- linux-2.6.32.59/drivers/ide/sis5513.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/sis5513.c 2012-03-13 13:15:35.072097993 +0100 @@ -561,7 +561,7 @@ static const struct ide_port_ops sis_ata .cable_detect = sis_cable_detect, }; -static const struct ide_port_info sis5513_chipset __devinitdata = { +static const struct ide_port_info sis5513_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_sis5513, .enablebits = { {0x4a, 0x02, 0x02}, {0x4a, 0x04, 0x04} }, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/sl82c105.c linux-2.6.32.59-pax/drivers/ide/sl82c105.c --- linux-2.6.32.59/drivers/ide/sl82c105.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/sl82c105.c 2012-03-13 13:15:35.072097993 +0100 @@ -319,7 +319,7 @@ static const struct ide_dma_ops sl82c105 .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info sl82c105_chipset __devinitdata = { +static const struct ide_port_info sl82c105_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_sl82c105, .enablebits = {{0x40,0x01,0x01}, {0x40,0x10,0x10}}, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/slc90e66.c linux-2.6.32.59-pax/drivers/ide/slc90e66.c --- linux-2.6.32.59/drivers/ide/slc90e66.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/slc90e66.c 2012-03-13 13:15:35.076097993 +0100 @@ -131,7 +131,7 @@ static const struct ide_port_ops slc90e6 .cable_detect = slc90e66_cable_detect, }; -static const struct ide_port_info slc90e66_chipset __devinitdata = { +static const struct ide_port_info slc90e66_chipset __devinitconst = { .name = DRV_NAME, .enablebits = { {0x41, 0x80, 0x80}, {0x43, 0x80, 0x80} }, .port_ops = &slc90e66_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/tc86c001.c linux-2.6.32.59-pax/drivers/ide/tc86c001.c --- linux-2.6.32.59/drivers/ide/tc86c001.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/tc86c001.c 2012-03-13 13:15:35.076097993 +0100 @@ -190,7 +190,7 @@ static const struct ide_dma_ops tc86c001 .dma_sff_read_status = ide_dma_sff_read_status, }; -static const struct ide_port_info tc86c001_chipset __devinitdata = { +static const struct ide_port_info tc86c001_chipset __devinitconst = { .name = DRV_NAME, .init_hwif = init_hwif_tc86c001, .port_ops = &tc86c001_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/triflex.c linux-2.6.32.59-pax/drivers/ide/triflex.c --- linux-2.6.32.59/drivers/ide/triflex.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/triflex.c 2012-03-13 13:15:35.076097993 +0100 @@ -92,7 +92,7 @@ static const struct ide_port_ops triflex .set_dma_mode = triflex_set_mode, }; -static const struct ide_port_info triflex_device __devinitdata = { +static const struct ide_port_info triflex_device __devinitconst = { .name = DRV_NAME, .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, .port_ops = &triflex_port_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/trm290.c linux-2.6.32.59-pax/drivers/ide/trm290.c --- linux-2.6.32.59/drivers/ide/trm290.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/trm290.c 2012-03-13 13:15:35.076097993 +0100 @@ -324,7 +324,7 @@ static struct ide_dma_ops trm290_dma_ops .dma_check = trm290_dma_check, }; -static const struct ide_port_info trm290_chipset __devinitdata = { +static const struct ide_port_info trm290_chipset __devinitconst = { .name = DRV_NAME, .init_hwif = init_hwif_trm290, .tp_ops = &trm290_tp_ops, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ide/via82cxxx.c linux-2.6.32.59-pax/drivers/ide/via82cxxx.c --- linux-2.6.32.59/drivers/ide/via82cxxx.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ide/via82cxxx.c 2012-03-13 13:15:35.076097993 +0100 @@ -374,7 +374,7 @@ static const struct ide_port_ops via_por .cable_detect = via82cxxx_cable_detect, }; -static const struct ide_port_info via82cxxx_chipset __devinitdata = { +static const struct ide_port_info via82cxxx_chipset __devinitconst = { .name = DRV_NAME, .init_chipset = init_chipset_via82cxxx, .enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } }, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ieee1394/dv1394.c linux-2.6.32.59-pax/drivers/ieee1394/dv1394.c --- linux-2.6.32.59/drivers/ieee1394/dv1394.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ieee1394/dv1394.c 2012-03-13 13:15:35.080097993 +0100 @@ -739,7 +739,7 @@ static void frame_prepare(struct video_c based upon DIF section and sequence */ -static void inline +static inline void frame_put_packet (struct frame *f, struct packet *p) { int section_type = p->data[0] >> 5; /* section type is in bits 5 - 7 */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ieee1394/hosts.c linux-2.6.32.59-pax/drivers/ieee1394/hosts.c --- linux-2.6.32.59/drivers/ieee1394/hosts.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ieee1394/hosts.c 2012-03-13 13:15:35.080097993 +0100 @@ -78,6 +78,7 @@ static int dummy_isoctl(struct hpsb_iso } static struct hpsb_host_driver dummy_driver = { + .name = "dummy", .transmit_packet = dummy_transmit_packet, .devctl = dummy_devctl, .isoctl = dummy_isoctl diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ieee1394/init_ohci1394_dma.c linux-2.6.32.59-pax/drivers/ieee1394/init_ohci1394_dma.c --- linux-2.6.32.59/drivers/ieee1394/init_ohci1394_dma.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ieee1394/init_ohci1394_dma.c 2012-03-13 13:15:35.080097993 +0100 @@ -257,7 +257,7 @@ void __init init_ohci1394_dma_on_all_con for (func = 0; func < 8; func++) { u32 class = read_pci_config(num,slot,func, PCI_CLASS_REVISION); - if ((class == 0xffffffff)) + if (class == 0xffffffff) continue; /* No device at this func */ if (class>>8 != PCI_CLASS_SERIAL_FIREWIRE_OHCI) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ieee1394/ohci1394.c linux-2.6.32.59-pax/drivers/ieee1394/ohci1394.c --- linux-2.6.32.59/drivers/ieee1394/ohci1394.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ieee1394/ohci1394.c 2012-03-13 13:15:35.084097993 +0100 @@ -147,9 +147,9 @@ printk(level "%s: " fmt "\n" , OHCI1394_ printk(level "%s: fw-host%d: " fmt "\n" , OHCI1394_DRIVER_NAME, ohci->host->id , ## args) /* Module Parameters */ -static int phys_dma = 1; +static int phys_dma; module_param(phys_dma, int, 0444); -MODULE_PARM_DESC(phys_dma, "Enable physical DMA (default = 1)."); +MODULE_PARM_DESC(phys_dma, "Enable physical DMA (default = 0)."); static void dma_trm_tasklet(unsigned long data); static void dma_trm_reset(struct dma_trm_ctx *d); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/ieee1394/sbp2.c linux-2.6.32.59-pax/drivers/ieee1394/sbp2.c --- linux-2.6.32.59/drivers/ieee1394/sbp2.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/ieee1394/sbp2.c 2012-03-13 13:15:35.084097993 +0100 @@ -2111,7 +2111,7 @@ MODULE_DESCRIPTION("IEEE-1394 SBP-2 prot MODULE_SUPPORTED_DEVICE(SBP2_DEVICE_NAME); MODULE_LICENSE("GPL"); -static int sbp2_module_init(void) +static int __init sbp2_module_init(void) { int ret; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/infiniband/core/cm.c linux-2.6.32.59-pax/drivers/infiniband/core/cm.c --- linux-2.6.32.59/drivers/infiniband/core/cm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/infiniband/core/cm.c 2012-03-13 13:15:35.092097992 +0100 @@ -112,7 +112,7 @@ static char const counter_group_names[CM struct cm_counter_group { struct kobject obj; - atomic_long_t counter[CM_ATTR_COUNT]; + atomic_long_unchecked_t counter[CM_ATTR_COUNT]; }; struct cm_counter_attribute { @@ -1386,7 +1386,7 @@ static void cm_dup_req_handler(struct cm struct ib_mad_send_buf *msg = NULL; int ret; - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_REQ_COUNTER]); /* Quick state check to discard duplicate REQs. */ @@ -1764,7 +1764,7 @@ static void cm_dup_rep_handler(struct cm if (!cm_id_priv) return; - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_REP_COUNTER]); ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg); if (ret) @@ -1931,7 +1931,7 @@ static int cm_rtu_handler(struct cm_work if (cm_id_priv->id.state != IB_CM_REP_SENT && cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) { spin_unlock_irq(&cm_id_priv->lock); - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_RTU_COUNTER]); goto out; } @@ -2110,7 +2110,7 @@ static int cm_dreq_handler(struct cm_wor cm_id_priv = cm_acquire_id(dreq_msg->remote_comm_id, dreq_msg->local_comm_id); if (!cm_id_priv) { - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_DREQ_COUNTER]); cm_issue_drep(work->port, work->mad_recv_wc); return -EINVAL; @@ -2131,7 +2131,7 @@ static int cm_dreq_handler(struct cm_wor case IB_CM_MRA_REP_RCVD: break; case IB_CM_TIMEWAIT: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_DREQ_COUNTER]); if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) goto unlock; @@ -2145,7 +2145,7 @@ static int cm_dreq_handler(struct cm_wor cm_free_msg(msg); goto deref; case IB_CM_DREQ_RCVD: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_DREQ_COUNTER]); goto unlock; default: @@ -2501,7 +2501,7 @@ static int cm_mra_handler(struct cm_work ib_modify_mad(cm_id_priv->av.port->mad_agent, cm_id_priv->msg, timeout)) { if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD) - atomic_long_inc(&work->port-> + atomic_long_inc_unchecked(&work->port-> counter_group[CM_RECV_DUPLICATES]. counter[CM_MRA_COUNTER]); goto out; @@ -2510,7 +2510,7 @@ static int cm_mra_handler(struct cm_work break; case IB_CM_MRA_REQ_RCVD: case IB_CM_MRA_REP_RCVD: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_MRA_COUNTER]); /* fall through */ default: @@ -2672,7 +2672,7 @@ static int cm_lap_handler(struct cm_work case IB_CM_LAP_IDLE: break; case IB_CM_MRA_LAP_SENT: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_LAP_COUNTER]); if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg)) goto unlock; @@ -2688,7 +2688,7 @@ static int cm_lap_handler(struct cm_work cm_free_msg(msg); goto deref; case IB_CM_LAP_RCVD: - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_LAP_COUNTER]); goto unlock; default: @@ -2972,7 +2972,7 @@ static int cm_sidr_req_handler(struct cm cur_cm_id_priv = cm_insert_remote_sidr(cm_id_priv); if (cur_cm_id_priv) { spin_unlock_irq(&cm.lock); - atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES]. + atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES]. counter[CM_SIDR_REQ_COUNTER]); goto out; /* Duplicate message. */ } @@ -3184,10 +3184,10 @@ static void cm_send_handler(struct ib_ma if (!msg->context[0] && (attr_index != CM_REJ_COUNTER)) msg->retries = 1; - atomic_long_add(1 + msg->retries, + atomic_long_add_unchecked(1 + msg->retries, &port->counter_group[CM_XMIT].counter[attr_index]); if (msg->retries) - atomic_long_add(msg->retries, + atomic_long_add_unchecked(msg->retries, &port->counter_group[CM_XMIT_RETRIES]. counter[attr_index]); @@ -3397,7 +3397,7 @@ static void cm_recv_handler(struct ib_ma } attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id); - atomic_long_inc(&port->counter_group[CM_RECV]. + atomic_long_inc_unchecked(&port->counter_group[CM_RECV]. counter[attr_id - CM_ATTR_ID_OFFSET]); work = kmalloc(sizeof *work + sizeof(struct ib_sa_path_rec) * paths, @@ -3595,7 +3595,7 @@ static ssize_t cm_show_counter(struct ko cm_attr = container_of(attr, struct cm_counter_attribute, attr); return sprintf(buf, "%ld\n", - atomic_long_read(&group->counter[cm_attr->index])); + atomic_long_read_unchecked(&group->counter[cm_attr->index])); } static struct sysfs_ops cm_counter_ops = { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/infiniband/core/fmr_pool.c linux-2.6.32.59-pax/drivers/infiniband/core/fmr_pool.c --- linux-2.6.32.59/drivers/infiniband/core/fmr_pool.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/infiniband/core/fmr_pool.c 2012-03-13 13:15:35.096097992 +0100 @@ -97,8 +97,8 @@ struct ib_fmr_pool { struct task_struct *thread; - atomic_t req_ser; - atomic_t flush_ser; + atomic_unchecked_t req_ser; + atomic_unchecked_t flush_ser; wait_queue_head_t force_wait; }; @@ -179,10 +179,10 @@ static int ib_fmr_cleanup_thread(void *p struct ib_fmr_pool *pool = pool_ptr; do { - if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) < 0) { + if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) < 0) { ib_fmr_batch_release(pool); - atomic_inc(&pool->flush_ser); + atomic_inc_unchecked(&pool->flush_ser); wake_up_interruptible(&pool->force_wait); if (pool->flush_function) @@ -190,7 +190,7 @@ static int ib_fmr_cleanup_thread(void *p } set_current_state(TASK_INTERRUPTIBLE); - if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) >= 0 && + if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) >= 0 && !kthread_should_stop()) schedule(); __set_current_state(TASK_RUNNING); @@ -282,8 +282,8 @@ struct ib_fmr_pool *ib_create_fmr_pool(s pool->dirty_watermark = params->dirty_watermark; pool->dirty_len = 0; spin_lock_init(&pool->pool_lock); - atomic_set(&pool->req_ser, 0); - atomic_set(&pool->flush_ser, 0); + atomic_set_unchecked(&pool->req_ser, 0); + atomic_set_unchecked(&pool->flush_ser, 0); init_waitqueue_head(&pool->force_wait); pool->thread = kthread_run(ib_fmr_cleanup_thread, @@ -411,11 +411,11 @@ int ib_flush_fmr_pool(struct ib_fmr_pool } spin_unlock_irq(&pool->pool_lock); - serial = atomic_inc_return(&pool->req_ser); + serial = atomic_inc_return_unchecked(&pool->req_ser); wake_up_process(pool->thread); if (wait_event_interruptible(pool->force_wait, - atomic_read(&pool->flush_ser) - serial >= 0)) + atomic_read_unchecked(&pool->flush_ser) - serial >= 0)) return -EINTR; return 0; @@ -525,7 +525,7 @@ int ib_fmr_pool_unmap(struct ib_pool_fmr } else { list_add_tail(&fmr->list, &pool->dirty_list); if (++pool->dirty_len >= pool->dirty_watermark) { - atomic_inc(&pool->req_ser); + atomic_inc_unchecked(&pool->req_ser); wake_up_process(pool->thread); } } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/infiniband/hw/nes/nes.c linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes.c --- linux-2.6.32.59/drivers/infiniband/hw/nes/nes.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes.c 2012-03-13 13:15:35.104097992 +0100 @@ -102,7 +102,7 @@ MODULE_PARM_DESC(limit_maxrdreqsz, "Limi LIST_HEAD(nes_adapter_list); static LIST_HEAD(nes_dev_list); -atomic_t qps_destroyed; +atomic_unchecked_t qps_destroyed; static unsigned int ee_flsh_adapter; static unsigned int sysfs_nonidx_addr; @@ -259,7 +259,7 @@ static void nes_cqp_rem_ref_callback(str struct nes_adapter *nesadapter = nesdev->nesadapter; u32 qp_id; - atomic_inc(&qps_destroyed); + atomic_inc_unchecked(&qps_destroyed); /* Free the control structures */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/infiniband/hw/nes/nes_cm.c linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes_cm.c --- linux-2.6.32.59/drivers/infiniband/hw/nes/nes_cm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes_cm.c 2012-03-13 13:15:35.108097991 +0100 @@ -69,11 +69,11 @@ u32 cm_packets_received; u32 cm_listens_created; u32 cm_listens_destroyed; u32 cm_backlog_drops; -atomic_t cm_loopbacks; -atomic_t cm_nodes_created; -atomic_t cm_nodes_destroyed; -atomic_t cm_accel_dropped_pkts; -atomic_t cm_resets_recvd; +atomic_unchecked_t cm_loopbacks; +atomic_unchecked_t cm_nodes_created; +atomic_unchecked_t cm_nodes_destroyed; +atomic_unchecked_t cm_accel_dropped_pkts; +atomic_unchecked_t cm_resets_recvd; static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); @@ -149,13 +149,13 @@ static struct nes_cm_ops nes_cm_api = { static struct nes_cm_core *g_cm_core; -atomic_t cm_connects; -atomic_t cm_accepts; -atomic_t cm_disconnects; -atomic_t cm_closes; -atomic_t cm_connecteds; -atomic_t cm_connect_reqs; -atomic_t cm_rejects; +atomic_unchecked_t cm_connects; +atomic_unchecked_t cm_accepts; +atomic_unchecked_t cm_disconnects; +atomic_unchecked_t cm_closes; +atomic_unchecked_t cm_connecteds; +atomic_unchecked_t cm_connect_reqs; +atomic_unchecked_t cm_rejects; /** @@ -1195,7 +1195,7 @@ static struct nes_cm_node *make_cm_node( cm_node->rem_mac); add_hte_node(cm_core, cm_node); - atomic_inc(&cm_nodes_created); + atomic_inc_unchecked(&cm_nodes_created); return cm_node; } @@ -1253,7 +1253,7 @@ static int rem_ref_cm_node(struct nes_cm } atomic_dec(&cm_core->node_cnt); - atomic_inc(&cm_nodes_destroyed); + atomic_inc_unchecked(&cm_nodes_destroyed); nesqp = cm_node->nesqp; if (nesqp) { nesqp->cm_node = NULL; @@ -1320,7 +1320,7 @@ static int process_options(struct nes_cm static void drop_packet(struct sk_buff *skb) { - atomic_inc(&cm_accel_dropped_pkts); + atomic_inc_unchecked(&cm_accel_dropped_pkts); dev_kfree_skb_any(skb); } @@ -1377,7 +1377,7 @@ static void handle_rst_pkt(struct nes_cm int reset = 0; /* whether to send reset in case of err.. */ int passive_state; - atomic_inc(&cm_resets_recvd); + atomic_inc_unchecked(&cm_resets_recvd); nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." " refcnt=%d\n", cm_node, cm_node->state, atomic_read(&cm_node->ref_count)); @@ -2000,7 +2000,7 @@ static struct nes_cm_node *mini_cm_conne rem_ref_cm_node(cm_node->cm_core, cm_node); return NULL; } - atomic_inc(&cm_loopbacks); + atomic_inc_unchecked(&cm_loopbacks); loopbackremotenode->loopbackpartner = cm_node; loopbackremotenode->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; @@ -2262,7 +2262,7 @@ static int mini_cm_recv_pkt(struct nes_c add_ref_cm_node(cm_node); } else if (cm_node->state == NES_CM_STATE_TSA) { rem_ref_cm_node(cm_core, cm_node); - atomic_inc(&cm_accel_dropped_pkts); + atomic_inc_unchecked(&cm_accel_dropped_pkts); dev_kfree_skb_any(skb); break; } @@ -2568,7 +2568,7 @@ static int nes_cm_disconn_true(struct ne if ((cm_id) && (cm_id->event_handler)) { if (issue_disconn) { - atomic_inc(&cm_disconnects); + atomic_inc_unchecked(&cm_disconnects); cm_event.event = IW_CM_EVENT_DISCONNECT; cm_event.status = disconn_status; cm_event.local_addr = cm_id->local_addr; @@ -2590,7 +2590,7 @@ static int nes_cm_disconn_true(struct ne } if (issue_close) { - atomic_inc(&cm_closes); + atomic_inc_unchecked(&cm_closes); nes_disconnect(nesqp, 1); cm_id->provider_data = nesqp; @@ -2710,7 +2710,7 @@ int nes_accept(struct iw_cm_id *cm_id, s nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); - atomic_inc(&cm_accepts); + atomic_inc_unchecked(&cm_accepts); nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", atomic_read(&nesvnic->netdev->refcnt)); @@ -2919,7 +2919,7 @@ int nes_reject(struct iw_cm_id *cm_id, c struct nes_cm_core *cm_core; - atomic_inc(&cm_rejects); + atomic_inc_unchecked(&cm_rejects); cm_node = (struct nes_cm_node *) cm_id->provider_data; loopback = cm_node->loopbackpartner; cm_core = cm_node->cm_core; @@ -2982,7 +2982,7 @@ int nes_connect(struct iw_cm_id *cm_id, ntohl(cm_id->local_addr.sin_addr.s_addr), ntohs(cm_id->local_addr.sin_port)); - atomic_inc(&cm_connects); + atomic_inc_unchecked(&cm_connects); nesqp->active_conn = 1; /* cache the cm_id in the qp */ @@ -3195,7 +3195,7 @@ static void cm_event_connected(struct ne if (nesqp->destroyed) { return; } - atomic_inc(&cm_connecteds); + atomic_inc_unchecked(&cm_connecteds); nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" " local port 0x%04X. jiffies = %lu.\n", nesqp->hwqp.qp_id, @@ -3403,7 +3403,7 @@ static void cm_event_reset(struct nes_cm ret = cm_id->event_handler(cm_id, &cm_event); cm_id->add_ref(cm_id); - atomic_inc(&cm_closes); + atomic_inc_unchecked(&cm_closes); cm_event.event = IW_CM_EVENT_CLOSE; cm_event.status = IW_CM_EVENT_STATUS_OK; cm_event.provider_data = cm_id->provider_data; @@ -3439,7 +3439,7 @@ static void cm_event_mpa_req(struct nes_ return; cm_id = cm_node->cm_id; - atomic_inc(&cm_connect_reqs); + atomic_inc_unchecked(&cm_connect_reqs); nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", cm_node, cm_id, jiffies); @@ -3477,7 +3477,7 @@ static void cm_event_mpa_reject(struct n return; cm_id = cm_node->cm_id; - atomic_inc(&cm_connect_reqs); + atomic_inc_unchecked(&cm_connect_reqs); nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", cm_node, cm_id, jiffies); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/infiniband/hw/nes/nes.h linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes.h --- linux-2.6.32.59/drivers/infiniband/hw/nes/nes.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes.h 2012-03-13 13:15:35.108097991 +0100 @@ -174,17 +174,17 @@ extern unsigned int nes_debug_level; extern unsigned int wqm_quanta; extern struct list_head nes_adapter_list; -extern atomic_t cm_connects; -extern atomic_t cm_accepts; -extern atomic_t cm_disconnects; -extern atomic_t cm_closes; -extern atomic_t cm_connecteds; -extern atomic_t cm_connect_reqs; -extern atomic_t cm_rejects; -extern atomic_t mod_qp_timouts; -extern atomic_t qps_created; -extern atomic_t qps_destroyed; -extern atomic_t sw_qps_destroyed; +extern atomic_unchecked_t cm_connects; +extern atomic_unchecked_t cm_accepts; +extern atomic_unchecked_t cm_disconnects; +extern atomic_unchecked_t cm_closes; +extern atomic_unchecked_t cm_connecteds; +extern atomic_unchecked_t cm_connect_reqs; +extern atomic_unchecked_t cm_rejects; +extern atomic_unchecked_t mod_qp_timouts; +extern atomic_unchecked_t qps_created; +extern atomic_unchecked_t qps_destroyed; +extern atomic_unchecked_t sw_qps_destroyed; extern u32 mh_detected; extern u32 mh_pauses_sent; extern u32 cm_packets_sent; @@ -196,11 +196,11 @@ extern u32 cm_packets_retrans; extern u32 cm_listens_created; extern u32 cm_listens_destroyed; extern u32 cm_backlog_drops; -extern atomic_t cm_loopbacks; -extern atomic_t cm_nodes_created; -extern atomic_t cm_nodes_destroyed; -extern atomic_t cm_accel_dropped_pkts; -extern atomic_t cm_resets_recvd; +extern atomic_unchecked_t cm_loopbacks; +extern atomic_unchecked_t cm_nodes_created; +extern atomic_unchecked_t cm_nodes_destroyed; +extern atomic_unchecked_t cm_accel_dropped_pkts; +extern atomic_unchecked_t cm_resets_recvd; extern u32 int_mod_timer_init; extern u32 int_mod_cq_depth_256; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/infiniband/hw/nes/nes_nic.c linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes_nic.c --- linux-2.6.32.59/drivers/infiniband/hw/nes/nes_nic.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes_nic.c 2012-03-13 13:15:35.108097991 +0100 @@ -1210,17 +1210,17 @@ static void nes_netdev_get_ethtool_stats target_stat_values[++index] = mh_detected; target_stat_values[++index] = mh_pauses_sent; target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits; - target_stat_values[++index] = atomic_read(&cm_connects); - target_stat_values[++index] = atomic_read(&cm_accepts); - target_stat_values[++index] = atomic_read(&cm_disconnects); - target_stat_values[++index] = atomic_read(&cm_connecteds); - target_stat_values[++index] = atomic_read(&cm_connect_reqs); - target_stat_values[++index] = atomic_read(&cm_rejects); - target_stat_values[++index] = atomic_read(&mod_qp_timouts); - target_stat_values[++index] = atomic_read(&qps_created); - target_stat_values[++index] = atomic_read(&sw_qps_destroyed); - target_stat_values[++index] = atomic_read(&qps_destroyed); - target_stat_values[++index] = atomic_read(&cm_closes); + target_stat_values[++index] = atomic_read_unchecked(&cm_connects); + target_stat_values[++index] = atomic_read_unchecked(&cm_accepts); + target_stat_values[++index] = atomic_read_unchecked(&cm_disconnects); + target_stat_values[++index] = atomic_read_unchecked(&cm_connecteds); + target_stat_values[++index] = atomic_read_unchecked(&cm_connect_reqs); + target_stat_values[++index] = atomic_read_unchecked(&cm_rejects); + target_stat_values[++index] = atomic_read_unchecked(&mod_qp_timouts); + target_stat_values[++index] = atomic_read_unchecked(&qps_created); + target_stat_values[++index] = atomic_read_unchecked(&sw_qps_destroyed); + target_stat_values[++index] = atomic_read_unchecked(&qps_destroyed); + target_stat_values[++index] = atomic_read_unchecked(&cm_closes); target_stat_values[++index] = cm_packets_sent; target_stat_values[++index] = cm_packets_bounced; target_stat_values[++index] = cm_packets_created; @@ -1230,11 +1230,11 @@ static void nes_netdev_get_ethtool_stats target_stat_values[++index] = cm_listens_created; target_stat_values[++index] = cm_listens_destroyed; target_stat_values[++index] = cm_backlog_drops; - target_stat_values[++index] = atomic_read(&cm_loopbacks); - target_stat_values[++index] = atomic_read(&cm_nodes_created); - target_stat_values[++index] = atomic_read(&cm_nodes_destroyed); - target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts); - target_stat_values[++index] = atomic_read(&cm_resets_recvd); + target_stat_values[++index] = atomic_read_unchecked(&cm_loopbacks); + target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_created); + target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_destroyed); + target_stat_values[++index] = atomic_read_unchecked(&cm_accel_dropped_pkts); + target_stat_values[++index] = atomic_read_unchecked(&cm_resets_recvd); target_stat_values[++index] = int_mod_timer_init; target_stat_values[++index] = int_mod_cq_depth_1; target_stat_values[++index] = int_mod_cq_depth_4; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/infiniband/hw/nes/nes_verbs.c linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes_verbs.c --- linux-2.6.32.59/drivers/infiniband/hw/nes/nes_verbs.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/infiniband/hw/nes/nes_verbs.c 2012-03-13 13:15:35.112097991 +0100 @@ -45,9 +45,9 @@ #include -atomic_t mod_qp_timouts; -atomic_t qps_created; -atomic_t sw_qps_destroyed; +atomic_unchecked_t mod_qp_timouts; +atomic_unchecked_t qps_created; +atomic_unchecked_t sw_qps_destroyed; static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev); @@ -1240,7 +1240,7 @@ static struct ib_qp *nes_create_qp(struc if (init_attr->create_flags) return ERR_PTR(-EINVAL); - atomic_inc(&qps_created); + atomic_inc_unchecked(&qps_created); switch (init_attr->qp_type) { case IB_QPT_RC: if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { @@ -1568,7 +1568,7 @@ static int nes_destroy_qp(struct ib_qp * struct iw_cm_event cm_event; int ret; - atomic_inc(&sw_qps_destroyed); + atomic_inc_unchecked(&sw_qps_destroyed); nesqp->destroyed = 1; /* Blow away the connection if it exists. */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/input/gameport/gameport.c linux-2.6.32.59-pax/drivers/input/gameport/gameport.c --- linux-2.6.32.59/drivers/input/gameport/gameport.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/input/gameport/gameport.c 2012-03-13 13:15:35.112097991 +0100 @@ -515,13 +515,13 @@ EXPORT_SYMBOL(gameport_set_phys); */ static void gameport_init_port(struct gameport *gameport) { - static atomic_t gameport_no = ATOMIC_INIT(0); + static atomic_unchecked_t gameport_no = ATOMIC_INIT(0); __module_get(THIS_MODULE); mutex_init(&gameport->drv_mutex); device_initialize(&gameport->dev); - dev_set_name(&gameport->dev, "gameport%lu", (unsigned long)atomic_inc_return(&gameport_no) - 1); + dev_set_name(&gameport->dev, "gameport%lu", (unsigned long)atomic_inc_return_unchecked(&gameport_no) - 1); gameport->dev.bus = &gameport_bus; gameport->dev.release = gameport_release_port; if (gameport->parent) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/input/input.c linux-2.6.32.59-pax/drivers/input/input.c --- linux-2.6.32.59/drivers/input/input.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/input/input.c 2012-03-13 13:15:35.116097991 +0100 @@ -1558,7 +1558,7 @@ EXPORT_SYMBOL(input_set_capability); */ int input_register_device(struct input_dev *dev) { - static atomic_t input_no = ATOMIC_INIT(0); + static atomic_unchecked_t input_no = ATOMIC_INIT(0); struct input_handler *handler; const char *path; int error; @@ -1585,7 +1585,7 @@ int input_register_device(struct input_d dev->setkeycode = input_default_setkeycode; dev_set_name(&dev->dev, "input%ld", - (unsigned long) atomic_inc_return(&input_no) - 1); + (unsigned long) atomic_inc_return_unchecked(&input_no) - 1); error = device_add(&dev->dev); if (error) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/input/joystick/sidewinder.c linux-2.6.32.59-pax/drivers/input/joystick/sidewinder.c --- linux-2.6.32.59/drivers/input/joystick/sidewinder.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/input/joystick/sidewinder.c 2012-03-13 13:15:35.116097991 +0100 @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/input/joystick/xpad.c linux-2.6.32.59-pax/drivers/input/joystick/xpad.c --- linux-2.6.32.59/drivers/input/joystick/xpad.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/input/joystick/xpad.c 2012-03-13 13:15:35.116097991 +0100 @@ -621,7 +621,7 @@ static void xpad_led_set(struct led_clas static int xpad_led_probe(struct usb_xpad *xpad) { - static atomic_t led_seq = ATOMIC_INIT(0); + static atomic_unchecked_t led_seq = ATOMIC_INIT(0); long led_no; struct xpad_led *led; struct led_classdev *led_cdev; @@ -634,7 +634,7 @@ static int xpad_led_probe(struct usb_xpa if (!led) return -ENOMEM; - led_no = (long)atomic_inc_return(&led_seq) - 1; + led_no = (long)atomic_inc_return_unchecked(&led_seq) - 1; snprintf(led->name, sizeof(led->name), "xpad%ld", led_no); led->xpad = xpad; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/input/serio/serio.c linux-2.6.32.59-pax/drivers/input/serio/serio.c --- linux-2.6.32.59/drivers/input/serio/serio.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/input/serio/serio.c 2012-03-13 13:15:35.120097991 +0100 @@ -527,7 +527,7 @@ static void serio_release_port(struct de */ static void serio_init_port(struct serio *serio) { - static atomic_t serio_no = ATOMIC_INIT(0); + static atomic_unchecked_t serio_no = ATOMIC_INIT(0); __module_get(THIS_MODULE); @@ -536,7 +536,7 @@ static void serio_init_port(struct serio mutex_init(&serio->drv_mutex); device_initialize(&serio->dev); dev_set_name(&serio->dev, "serio%ld", - (long)atomic_inc_return(&serio_no) - 1); + (long)atomic_inc_return_unchecked(&serio_no) - 1); serio->dev.bus = &serio_bus; serio->dev.release = serio_release_port; if (serio->parent) { diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/isdn/gigaset/common.c linux-2.6.32.59-pax/drivers/isdn/gigaset/common.c --- linux-2.6.32.59/drivers/isdn/gigaset/common.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/isdn/gigaset/common.c 2012-03-13 13:15:35.120097991 +0100 @@ -712,7 +712,7 @@ struct cardstate *gigaset_initcs(struct cs->commands_pending = 0; cs->cur_at_seq = 0; cs->gotfwver = -1; - cs->open_count = 0; + local_set(&cs->open_count, 0); cs->dev = NULL; cs->tty = NULL; cs->tty_dev = NULL; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/isdn/gigaset/gigaset.h linux-2.6.32.59-pax/drivers/isdn/gigaset/gigaset.h --- linux-2.6.32.59/drivers/isdn/gigaset/gigaset.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/isdn/gigaset/gigaset.h 2012-03-13 13:15:35.120097991 +0100 @@ -34,6 +34,7 @@ #include #include #include +#include #define GIG_VERSION {0,5,0,0} #define GIG_COMPAT {0,4,0,0} @@ -446,7 +447,7 @@ struct cardstate { spinlock_t cmdlock; unsigned curlen, cmdbytes; - unsigned open_count; + local_t open_count; struct tty_struct *tty; struct tasklet_struct if_wake_tasklet; unsigned control_state; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/isdn/gigaset/interface.c linux-2.6.32.59-pax/drivers/isdn/gigaset/interface.c --- linux-2.6.32.59/drivers/isdn/gigaset/interface.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/isdn/gigaset/interface.c 2012-03-13 13:15:35.120097991 +0100 @@ -165,9 +165,7 @@ static int if_open(struct tty_struct *tt return -ERESTARTSYS; // FIXME -EINTR? tty->driver_data = cs; - ++cs->open_count; - - if (cs->open_count == 1) { + if (local_inc_return(&cs->open_count) == 1) { spin_lock_irqsave(&cs->lock, flags); cs->tty = tty; spin_unlock_irqrestore(&cs->lock, flags); @@ -195,10 +193,10 @@ static void if_close(struct tty_struct * if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */ - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else { - if (!--cs->open_count) { + if (!local_dec_return(&cs->open_count)) { spin_lock_irqsave(&cs->lock, flags); cs->tty = NULL; spin_unlock_irqrestore(&cs->lock, flags); @@ -233,7 +231,7 @@ static int if_ioctl(struct tty_struct *t if (!cs->connected) { gig_dbg(DEBUG_IF, "not connected"); retval = -ENODEV; - } else if (!cs->open_count) + } else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else { retval = 0; @@ -361,7 +359,7 @@ static int if_write(struct tty_struct *t if (!cs->connected) { gig_dbg(DEBUG_IF, "not connected"); retval = -ENODEV; - } else if (!cs->open_count) + } else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else if (cs->mstate != MS_LOCKED) { dev_warn(cs->dev, "can't write to unlocked device\n"); @@ -395,7 +393,7 @@ static int if_write_room(struct tty_stru if (!cs->connected) { gig_dbg(DEBUG_IF, "not connected"); retval = -ENODEV; - } else if (!cs->open_count) + } else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else if (cs->mstate != MS_LOCKED) { dev_warn(cs->dev, "can't write to unlocked device\n"); @@ -425,7 +423,7 @@ static int if_chars_in_buffer(struct tty if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else if (cs->mstate != MS_LOCKED) dev_warn(cs->dev, "can't write to unlocked device\n"); @@ -453,7 +451,7 @@ static void if_throttle(struct tty_struc if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */ - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else { //FIXME @@ -478,7 +476,7 @@ static void if_unthrottle(struct tty_str if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */ - else if (!cs->open_count) + else if (!local_read(&cs->open_count)) dev_warn(cs->dev, "%s: device not opened\n", __func__); else { //FIXME @@ -510,7 +508,7 @@ static void if_set_termios(struct tty_st goto out; } - if (!cs->open_count) { + if (!local_read(&cs->open_count)) { dev_warn(cs->dev, "%s: device not opened\n", __func__); goto out; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/isdn/hardware/avm/b1.c linux-2.6.32.59-pax/drivers/isdn/hardware/avm/b1.c --- linux-2.6.32.59/drivers/isdn/hardware/avm/b1.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/isdn/hardware/avm/b1.c 2012-03-13 13:15:35.124097990 +0100 @@ -173,7 +173,7 @@ int b1_load_t4file(avmcard *card, capilo } if (left) { if (t4file->user) { - if (copy_from_user(buf, dp, left)) + if (left > sizeof buf || copy_from_user(buf, dp, left)) return -EFAULT; } else { memcpy(buf, dp, left); @@ -221,7 +221,7 @@ int b1_load_config(avmcard *card, capilo } if (left) { if (config->user) { - if (copy_from_user(buf, dp, left)) + if (left > sizeof buf || copy_from_user(buf, dp, left)) return -EFAULT; } else { memcpy(buf, dp, left); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/isdn/hardware/eicon/divasync.h linux-2.6.32.59-pax/drivers/isdn/hardware/eicon/divasync.h --- linux-2.6.32.59/drivers/isdn/hardware/eicon/divasync.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/isdn/hardware/eicon/divasync.h 2012-03-13 13:15:35.124097990 +0100 @@ -146,7 +146,7 @@ typedef struct _diva_didd_add_adapter { } diva_didd_add_adapter_t; typedef struct _diva_didd_remove_adapter { IDI_CALL p_request; -} diva_didd_remove_adapter_t; +} __no_const diva_didd_remove_adapter_t; typedef struct _diva_didd_read_adapter_array { void * buffer; dword length; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/isdn/hardware/eicon/xdi_adapter.h linux-2.6.32.59-pax/drivers/isdn/hardware/eicon/xdi_adapter.h --- linux-2.6.32.59/drivers/isdn/hardware/eicon/xdi_adapter.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/isdn/hardware/eicon/xdi_adapter.h 2012-03-13 13:15:35.124097990 +0100 @@ -44,7 +44,7 @@ typedef struct _xdi_mbox_t { typedef struct _diva_os_idi_adapter_interface { diva_init_card_proc_t cleanup_adapter_proc; diva_cmd_card_proc_t cmd_proc; -} diva_os_idi_adapter_interface_t; +} __no_const diva_os_idi_adapter_interface_t; typedef struct _diva_os_xdi_adapter { struct list_head link; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/isdn/icn/icn.c linux-2.6.32.59-pax/drivers/isdn/icn/icn.c --- linux-2.6.32.59/drivers/isdn/icn/icn.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/isdn/icn/icn.c 2012-03-13 13:15:35.124097990 +0100 @@ -1044,7 +1044,7 @@ icn_writecmd(const u_char * buf, int len if (count > len) count = len; if (user) { - if (copy_from_user(msg, buf, count)) + if (count > sizeof msg || copy_from_user(msg, buf, count)) return -EFAULT; } else memcpy(msg, buf, count); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/lguest/core.c linux-2.6.32.59-pax/drivers/lguest/core.c --- linux-2.6.32.59/drivers/lguest/core.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/lguest/core.c 2012-03-13 13:15:35.128097990 +0100 @@ -91,9 +91,17 @@ static __init int map_switcher(void) * it's worked so far. The end address needs +1 because __get_vm_area * allocates an extra guard page, so we need space for that. */ + +#if defined(CONFIG_MODULES) && defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC) + switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, + VM_ALLOC | VM_KERNEXEC, SWITCHER_ADDR, SWITCHER_ADDR + + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); +#else switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE, VM_ALLOC, SWITCHER_ADDR, SWITCHER_ADDR + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE); +#endif + if (!switcher_vma) { err = -ENOMEM; printk("lguest: could not map switcher pages high\n"); @@ -118,7 +126,7 @@ static __init int map_switcher(void) * Now the Switcher is mapped at the right address, we can't fail! * Copy in the compiled-in Switcher code (from _switcher.S). */ - memcpy(switcher_vma->addr, start_switcher_text, + memcpy(switcher_vma->addr, ktla_ktva(start_switcher_text), end_switcher_text - start_switcher_text); printk(KERN_INFO "lguest: mapped switcher at %p\n", diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/lguest/x86/core.c linux-2.6.32.59-pax/drivers/lguest/x86/core.c --- linux-2.6.32.59/drivers/lguest/x86/core.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/lguest/x86/core.c 2012-03-13 13:15:35.128097990 +0100 @@ -59,7 +59,7 @@ static struct { /* Offset from where switcher.S was compiled to where we've copied it */ static unsigned long switcher_offset(void) { - return SWITCHER_ADDR - (unsigned long)start_switcher_text; + return SWITCHER_ADDR - (unsigned long)ktla_ktva(start_switcher_text); } /* This cpu's struct lguest_pages. */ @@ -100,7 +100,13 @@ static void copy_in_guest_info(struct lg * These copies are pretty cheap, so we do them unconditionally: */ /* Save the current Host top-level page directory. */ + +#ifdef CONFIG_PAX_PER_CPU_PGD + pages->state.host_cr3 = read_cr3(); +#else pages->state.host_cr3 = __pa(current->mm->pgd); +#endif + /* * Set up the Guest's page tables to see this CPU's pages (and no * other CPU's pages). @@ -535,7 +541,7 @@ void __init lguest_arch_host_init(void) * compiled-in switcher code and the high-mapped copy we just made. */ for (i = 0; i < IDT_ENTRIES; i++) - default_idt_entries[i] += switcher_offset(); + default_idt_entries[i] = ktla_ktva(default_idt_entries[i]) + switcher_offset(); /* * Set up the Switcher's per-cpu areas. @@ -618,7 +624,7 @@ void __init lguest_arch_host_init(void) * it will be undisturbed when we switch. To change %cs and jump we * need this structure to feed to Intel's "lcall" instruction. */ - lguest_entry.offset = (long)switch_to_guest + switcher_offset(); + lguest_entry.offset = (long)ktla_ktva(switch_to_guest) + switcher_offset(); lguest_entry.segment = LGUEST_CS; /* diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/lguest/x86/switcher_32.S linux-2.6.32.59-pax/drivers/lguest/x86/switcher_32.S --- linux-2.6.32.59/drivers/lguest/x86/switcher_32.S 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/lguest/x86/switcher_32.S 2012-03-13 13:15:35.128097990 +0100 @@ -87,6 +87,7 @@ #include #include #include +#include // We mark the start of the code to copy // It's placed in .text tho it's never run here @@ -149,6 +150,13 @@ ENTRY(switch_to_guest) // Changes type when we load it: damn Intel! // For after we switch over our page tables // That entry will be read-only: we'd crash. + +#ifdef CONFIG_PAX_KERNEXEC + mov %cr0, %edx + xor $X86_CR0_WP, %edx + mov %edx, %cr0 +#endif + movl $(GDT_ENTRY_TSS*8), %edx ltr %dx @@ -157,9 +165,15 @@ ENTRY(switch_to_guest) // Let's clear it again for our return. // The GDT descriptor of the Host // Points to the table after two "size" bytes - movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %edx + movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %eax // Clear "used" from type field (byte 5, bit 2) - andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%edx) + andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%eax) + +#ifdef CONFIG_PAX_KERNEXEC + mov %cr0, %eax + xor $X86_CR0_WP, %eax + mov %eax, %cr0 +#endif // Once our page table's switched, the Guest is live! // The Host fades as we run this final step. @@ -295,13 +309,12 @@ deliver_to_host: // I consulted gcc, and it gave // These instructions, which I gladly credit: leal (%edx,%ebx,8), %eax - movzwl (%eax),%edx - movl 4(%eax), %eax - xorw %ax, %ax - orl %eax, %edx + movl 4(%eax), %edx + movw (%eax), %dx // Now the address of the handler's in %edx // We call it now: its "iret" drops us home. - jmp *%edx + ljmp $__KERNEL_CS, $1f +1: jmp *%edx // Every interrupt can come to us here // But we must truly tell each apart. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/macintosh/macio_asic.c linux-2.6.32.59-pax/drivers/macintosh/macio_asic.c --- linux-2.6.32.59/drivers/macintosh/macio_asic.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/macintosh/macio_asic.c 2012-03-13 13:15:35.128097990 +0100 @@ -701,7 +701,7 @@ static void __devexit macio_pci_remove(s * MacIO is matched against any Apple ID, it's probe() function * will then decide wether it applies or not */ -static const struct pci_device_id __devinitdata pci_ids [] = { { +static const struct pci_device_id __devinitconst pci_ids [] = { { .vendor = PCI_VENDOR_ID_APPLE, .device = PCI_ANY_ID, .subvendor = PCI_ANY_ID, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/dm.c linux-2.6.32.59-pax/drivers/md/dm.c --- linux-2.6.32.59/drivers/md/dm.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/dm.c 2012-03-13 13:15:35.132097990 +0100 @@ -165,9 +165,9 @@ struct mapped_device { /* * Event handling. */ - atomic_t event_nr; + atomic_unchecked_t event_nr; wait_queue_head_t eventq; - atomic_t uevent_seq; + atomic_unchecked_t uevent_seq; struct list_head uevent_list; spinlock_t uevent_lock; /* Protect access to uevent_list */ @@ -1776,8 +1776,8 @@ static struct mapped_device *alloc_dev(i rwlock_init(&md->map_lock); atomic_set(&md->holders, 1); atomic_set(&md->open_count, 0); - atomic_set(&md->event_nr, 0); - atomic_set(&md->uevent_seq, 0); + atomic_set_unchecked(&md->event_nr, 0); + atomic_set_unchecked(&md->uevent_seq, 0); INIT_LIST_HEAD(&md->uevent_list); spin_lock_init(&md->uevent_lock); @@ -1927,7 +1927,7 @@ static void event_callback(void *context dm_send_uevents(&uevents, &disk_to_dev(md->disk)->kobj); - atomic_inc(&md->event_nr); + atomic_inc_unchecked(&md->event_nr); wake_up(&md->eventq); } @@ -2562,18 +2562,18 @@ void dm_kobject_uevent(struct mapped_dev uint32_t dm_next_uevent_seq(struct mapped_device *md) { - return atomic_add_return(1, &md->uevent_seq); + return atomic_add_return_unchecked(1, &md->uevent_seq); } uint32_t dm_get_event_nr(struct mapped_device *md) { - return atomic_read(&md->event_nr); + return atomic_read_unchecked(&md->event_nr); } int dm_wait_event(struct mapped_device *md, int event_nr) { return wait_event_interruptible(md->eventq, - (event_nr != atomic_read(&md->event_nr))); + (event_nr != atomic_read_unchecked(&md->event_nr))); } void dm_uevent_add(struct mapped_device *md, struct list_head *elist) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/dm-ioctl.c linux-2.6.32.59-pax/drivers/md/dm-ioctl.c --- linux-2.6.32.59/drivers/md/dm-ioctl.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/dm-ioctl.c 2012-03-13 13:15:35.132097990 +0100 @@ -1437,7 +1437,7 @@ static int validate_params(uint cmd, str cmd == DM_LIST_VERSIONS_CMD) return 0; - if ((cmd == DM_DEV_CREATE_CMD)) { + if (cmd == DM_DEV_CREATE_CMD) { if (!*param->name) { DMWARN("name not supplied when creating device"); return -EINVAL; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/dm-raid1.c linux-2.6.32.59-pax/drivers/md/dm-raid1.c --- linux-2.6.32.59/drivers/md/dm-raid1.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/dm-raid1.c 2012-03-13 13:15:35.132097990 +0100 @@ -41,7 +41,7 @@ enum dm_raid1_error { struct mirror { struct mirror_set *ms; - atomic_t error_count; + atomic_unchecked_t error_count; unsigned long error_type; struct dm_dev *dev; sector_t offset; @@ -203,7 +203,7 @@ static void fail_mirror(struct mirror *m * simple way to tell if a device has encountered * errors. */ - atomic_inc(&m->error_count); + atomic_inc_unchecked(&m->error_count); if (test_and_set_bit(error_type, &m->error_type)) return; @@ -225,7 +225,7 @@ static void fail_mirror(struct mirror *m } for (new = ms->mirror; new < ms->mirror + ms->nr_mirrors; new++) - if (!atomic_read(&new->error_count)) { + if (!atomic_read_unchecked(&new->error_count)) { set_default_mirror(new); break; } @@ -363,7 +363,7 @@ static struct mirror *choose_mirror(stru struct mirror *m = get_default_mirror(ms); do { - if (likely(!atomic_read(&m->error_count))) + if (likely(!atomic_read_unchecked(&m->error_count))) return m; if (m-- == ms->mirror) @@ -377,7 +377,7 @@ static int default_ok(struct mirror *m) { struct mirror *default_mirror = get_default_mirror(m->ms); - return !atomic_read(&default_mirror->error_count); + return !atomic_read_unchecked(&default_mirror->error_count); } static int mirror_available(struct mirror_set *ms, struct bio *bio) @@ -484,7 +484,7 @@ static void do_reads(struct mirror_set * */ if (likely(region_in_sync(ms, region, 1))) m = choose_mirror(ms, bio->bi_sector); - else if (m && atomic_read(&m->error_count)) + else if (m && atomic_read_unchecked(&m->error_count)) m = NULL; if (likely(m)) @@ -855,7 +855,7 @@ static int get_mirror(struct mirror_set } ms->mirror[mirror].ms = ms; - atomic_set(&(ms->mirror[mirror].error_count), 0); + atomic_set_unchecked(&(ms->mirror[mirror].error_count), 0); ms->mirror[mirror].error_type = 0; ms->mirror[mirror].offset = offset; @@ -1241,7 +1241,7 @@ static void mirror_resume(struct dm_targ */ static char device_status_char(struct mirror *m) { - if (!atomic_read(&(m->error_count))) + if (!atomic_read_unchecked(&(m->error_count))) return 'A'; return (test_bit(DM_RAID1_WRITE_ERROR, &(m->error_type))) ? 'D' : diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/dm-stripe.c linux-2.6.32.59-pax/drivers/md/dm-stripe.c --- linux-2.6.32.59/drivers/md/dm-stripe.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/dm-stripe.c 2012-03-13 13:15:35.136097990 +0100 @@ -20,7 +20,7 @@ struct stripe { struct dm_dev *dev; sector_t physical_start; - atomic_t error_count; + atomic_unchecked_t error_count; }; struct stripe_c { @@ -188,7 +188,7 @@ static int stripe_ctr(struct dm_target * kfree(sc); return r; } - atomic_set(&(sc->stripe[i].error_count), 0); + atomic_set_unchecked(&(sc->stripe[i].error_count), 0); } ti->private = sc; @@ -257,7 +257,7 @@ static int stripe_status(struct dm_targe DMEMIT("%d ", sc->stripes); for (i = 0; i < sc->stripes; i++) { DMEMIT("%s ", sc->stripe[i].dev->name); - buffer[i] = atomic_read(&(sc->stripe[i].error_count)) ? + buffer[i] = atomic_read_unchecked(&(sc->stripe[i].error_count)) ? 'D' : 'A'; } buffer[i] = '\0'; @@ -304,8 +304,8 @@ static int stripe_end_io(struct dm_targe */ for (i = 0; i < sc->stripes; i++) if (!strcmp(sc->stripe[i].dev->name, major_minor)) { - atomic_inc(&(sc->stripe[i].error_count)); - if (atomic_read(&(sc->stripe[i].error_count)) < + atomic_inc_unchecked(&(sc->stripe[i].error_count)); + if (atomic_read_unchecked(&(sc->stripe[i].error_count)) < DM_IO_ERROR_THRESHOLD) queue_work(kstriped, &sc->kstriped_ws); } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/dm-table.c linux-2.6.32.59-pax/drivers/md/dm-table.c --- linux-2.6.32.59/drivers/md/dm-table.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/dm-table.c 2012-03-13 13:15:35.136097990 +0100 @@ -376,7 +376,7 @@ static int device_area_is_invalid(struct if (!dev_size) return 0; - if ((start >= dev_size) || (start + len > dev_size)) { + if ((start >= dev_size) || (len > dev_size - start)) { DMWARN("%s: %s too small for target: " "start=%llu, len=%llu, dev_size=%llu", dm_device_name(ti->table->md), bdevname(bdev, b), diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/md.c linux-2.6.32.59-pax/drivers/md/md.c --- linux-2.6.32.59/drivers/md/md.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/md.c 2012-03-13 13:15:35.140097990 +0100 @@ -153,10 +153,10 @@ static int start_readonly; * start build, activate spare */ static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters); -static atomic_t md_event_count; +static atomic_unchecked_t md_event_count; void md_new_event(mddev_t *mddev) { - atomic_inc(&md_event_count); + atomic_inc_unchecked(&md_event_count); wake_up(&md_event_waiters); } EXPORT_SYMBOL_GPL(md_new_event); @@ -166,7 +166,7 @@ EXPORT_SYMBOL_GPL(md_new_event); */ static void md_new_event_inintr(mddev_t *mddev) { - atomic_inc(&md_event_count); + atomic_inc_unchecked(&md_event_count); wake_up(&md_event_waiters); } @@ -1226,7 +1226,7 @@ static int super_1_load(mdk_rdev_t *rdev rdev->preferred_minor = 0xffff; rdev->data_offset = le64_to_cpu(sb->data_offset); - atomic_set(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read)); + atomic_set_unchecked(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read)); rdev->sb_size = le32_to_cpu(sb->max_dev) * 2 + 256; bmask = queue_logical_block_size(rdev->bdev->bd_disk->queue)-1; @@ -1400,7 +1400,7 @@ static void super_1_sync(mddev_t *mddev, else sb->resync_offset = cpu_to_le64(0); - sb->cnt_corrected_read = cpu_to_le32(atomic_read(&rdev->corrected_errors)); + sb->cnt_corrected_read = cpu_to_le32(atomic_read_unchecked(&rdev->corrected_errors)); sb->raid_disks = cpu_to_le32(mddev->raid_disks); sb->size = cpu_to_le64(mddev->dev_sectors); @@ -2222,7 +2222,7 @@ __ATTR(state, S_IRUGO|S_IWUSR, state_sho static ssize_t errors_show(mdk_rdev_t *rdev, char *page) { - return sprintf(page, "%d\n", atomic_read(&rdev->corrected_errors)); + return sprintf(page, "%d\n", atomic_read_unchecked(&rdev->corrected_errors)); } static ssize_t @@ -2231,7 +2231,7 @@ errors_store(mdk_rdev_t *rdev, const cha char *e; unsigned long n = simple_strtoul(buf, &e, 10); if (*buf && (*e == 0 || *e == '\n')) { - atomic_set(&rdev->corrected_errors, n); + atomic_set_unchecked(&rdev->corrected_errors, n); return len; } return -EINVAL; @@ -2574,8 +2574,8 @@ static mdk_rdev_t *md_import_device(dev_ rdev->data_offset = 0; rdev->sb_events = 0; atomic_set(&rdev->nr_pending, 0); - atomic_set(&rdev->read_errors, 0); - atomic_set(&rdev->corrected_errors, 0); + atomic_set_unchecked(&rdev->read_errors, 0); + atomic_set_unchecked(&rdev->corrected_errors, 0); size = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS; if (!size) { @@ -5962,7 +5962,7 @@ static int md_seq_show(struct seq_file * spin_unlock(&pers_lock); seq_printf(seq, "\n"); - mi->event = atomic_read(&md_event_count); + mi->event = atomic_read_unchecked(&md_event_count); return 0; } if (v == (void*)2) { @@ -6051,7 +6051,7 @@ static int md_seq_show(struct seq_file * chunk_kb ? "KB" : "B"); if (bitmap->file) { seq_printf(seq, ", file: "); - seq_path(seq, &bitmap->file->f_path, " \t\n"); + seq_path(seq, &bitmap->file->f_path, " \t\n\\"); } seq_printf(seq, "\n"); @@ -6085,7 +6085,7 @@ static int md_seq_open(struct inode *ino else { struct seq_file *p = file->private_data; p->private = mi; - mi->event = atomic_read(&md_event_count); + mi->event = atomic_read_unchecked(&md_event_count); } return error; } @@ -6101,7 +6101,7 @@ static unsigned int mdstat_poll(struct f /* always allow read */ mask = POLLIN | POLLRDNORM; - if (mi->event != atomic_read(&md_event_count)) + if (mi->event != atomic_read_unchecked(&md_event_count)) mask |= POLLERR | POLLPRI; return mask; } @@ -6145,7 +6145,7 @@ static int is_mddev_idle(mddev_t *mddev, struct gendisk *disk = rdev->bdev->bd_contains->bd_disk; curr_events = (int)part_stat_read(&disk->part0, sectors[0]) + (int)part_stat_read(&disk->part0, sectors[1]) - - atomic_read(&disk->sync_io); + atomic_read_unchecked(&disk->sync_io); /* sync IO will cause sync_io to increase before the disk_stats * as sync_io is counted when a request starts, and * disk_stats is counted when it completes. diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/md.h linux-2.6.32.59-pax/drivers/md/md.h --- linux-2.6.32.59/drivers/md/md.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/md.h 2012-03-13 13:15:35.140097990 +0100 @@ -94,10 +94,10 @@ struct mdk_rdev_s * only maintained for arrays that * support hot removal */ - atomic_t read_errors; /* number of consecutive read errors that + atomic_unchecked_t read_errors; /* number of consecutive read errors that * we have tried to ignore. */ - atomic_t corrected_errors; /* number of corrected read errors, + atomic_unchecked_t corrected_errors; /* number of corrected read errors, * for reporting to userspace and storing * in superblock. */ @@ -304,7 +304,7 @@ static inline void rdev_dec_pending(mdk_ static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors) { - atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); + atomic_add_unchecked(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); } struct mdk_personality diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/raid10.c linux-2.6.32.59-pax/drivers/md/raid10.c --- linux-2.6.32.59/drivers/md/raid10.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/raid10.c 2012-03-13 13:15:35.140097990 +0100 @@ -1255,7 +1255,7 @@ static void end_sync_read(struct bio *bi if (test_bit(BIO_UPTODATE, &bio->bi_flags)) set_bit(R10BIO_Uptodate, &r10_bio->state); else { - atomic_add(r10_bio->sectors, + atomic_add_unchecked(r10_bio->sectors, &conf->mirrors[d].rdev->corrected_errors); if (!test_bit(MD_RECOVERY_SYNC, &conf->mddev->recovery)) md_error(r10_bio->mddev, @@ -1520,7 +1520,7 @@ static void fix_read_error(conf_t *conf, test_bit(In_sync, &rdev->flags)) { atomic_inc(&rdev->nr_pending); rcu_read_unlock(); - atomic_add(s, &rdev->corrected_errors); + atomic_add_unchecked(s, &rdev->corrected_errors); if (sync_page_io(rdev->bdev, r10_bio->devs[sl].addr + sect + rdev->data_offset, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/raid1.c linux-2.6.32.59-pax/drivers/md/raid1.c --- linux-2.6.32.59/drivers/md/raid1.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/raid1.c 2012-03-13 13:15:35.144097989 +0100 @@ -1415,7 +1415,7 @@ static void sync_request_write(mddev_t * if (r1_bio->bios[d]->bi_end_io != end_sync_read) continue; rdev = conf->mirrors[d].rdev; - atomic_add(s, &rdev->corrected_errors); + atomic_add_unchecked(s, &rdev->corrected_errors); if (sync_page_io(rdev->bdev, sect + rdev->data_offset, s<<9, @@ -1564,7 +1564,7 @@ static void fix_read_error(conf_t *conf, /* Well, this device is dead */ md_error(mddev, rdev); else { - atomic_add(s, &rdev->corrected_errors); + atomic_add_unchecked(s, &rdev->corrected_errors); printk(KERN_INFO "raid1:%s: read error corrected " "(%d sectors at %llu on %s)\n", diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/md/raid5.c linux-2.6.32.59-pax/drivers/md/raid5.c --- linux-2.6.32.59/drivers/md/raid5.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/md/raid5.c 2012-03-13 13:15:35.144097989 +0100 @@ -482,7 +482,7 @@ static void ops_run_io(struct stripe_hea bi->bi_next = NULL; if ((rw & WRITE) && test_bit(R5_ReWrite, &sh->dev[i].flags)) - atomic_add(STRIPE_SECTORS, + atomic_add_unchecked(STRIPE_SECTORS, &rdev->corrected_errors); generic_make_request(bi); } else { @@ -1517,15 +1517,15 @@ static void raid5_end_read_request(struc clear_bit(R5_ReadError, &sh->dev[i].flags); clear_bit(R5_ReWrite, &sh->dev[i].flags); } - if (atomic_read(&conf->disks[i].rdev->read_errors)) - atomic_set(&conf->disks[i].rdev->read_errors, 0); + if (atomic_read_unchecked(&conf->disks[i].rdev->read_errors)) + atomic_set_unchecked(&conf->disks[i].rdev->read_errors, 0); } else { const char *bdn = bdevname(conf->disks[i].rdev->bdev, b); int retry = 0; rdev = conf->disks[i].rdev; clear_bit(R5_UPTODATE, &sh->dev[i].flags); - atomic_inc(&rdev->read_errors); + atomic_inc_unchecked(&rdev->read_errors); if (conf->mddev->degraded >= conf->max_degraded) printk_rl(KERN_WARNING "raid5:%s: read error not correctable " @@ -1543,7 +1543,7 @@ static void raid5_end_read_request(struc (unsigned long long)(sh->sector + rdev->data_offset), bdn); - else if (atomic_read(&rdev->read_errors) + else if (atomic_read_unchecked(&rdev->read_errors) > conf->max_nr_stripes) printk(KERN_WARNING "raid5:%s: Too many read errors, failing device %s.\n", diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/dvb/dvb-core/dvb_demux.h linux-2.6.32.59-pax/drivers/media/dvb/dvb-core/dvb_demux.h --- linux-2.6.32.59/drivers/media/dvb/dvb-core/dvb_demux.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/dvb/dvb-core/dvb_demux.h 2012-03-13 13:15:35.148097989 +0100 @@ -71,7 +71,7 @@ struct dvb_demux_feed { union { dmx_ts_cb ts; dmx_section_cb sec; - } cb; + } __no_const cb; struct dvb_demux *demux; void *priv; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/dvb/dvb-core/dvbdev.c linux-2.6.32.59-pax/drivers/media/dvb/dvb-core/dvbdev.c --- linux-2.6.32.59/drivers/media/dvb/dvb-core/dvbdev.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/dvb/dvb-core/dvbdev.c 2012-03-13 13:15:35.148097989 +0100 @@ -191,7 +191,7 @@ int dvb_register_device(struct dvb_adapt const struct dvb_device *template, void *priv, int type) { struct dvb_device *dvbdev; - struct file_operations *dvbdevfops; + file_operations_no_const *dvbdevfops; struct device *clsdev; int minor; int id; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/dvb/dvb-usb/cxusb.c linux-2.6.32.59-pax/drivers/media/dvb/dvb-usb/cxusb.c --- linux-2.6.32.59/drivers/media/dvb/dvb-usb/cxusb.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/dvb/dvb-usb/cxusb.c 2012-03-13 13:15:35.148097989 +0100 @@ -1040,7 +1040,7 @@ static struct dib0070_config dib7070p_di struct dib0700_adapter_state { int (*set_param_save) (struct dvb_frontend *, struct dvb_frontend_parameters *); -}; +} __no_const; static int dib7070_set_param_override(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep) diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/dvb/dvb-usb/dib0700_devices.c linux-2.6.32.59-pax/drivers/media/dvb/dvb-usb/dib0700_devices.c --- linux-2.6.32.59/drivers/media/dvb/dvb-usb/dib0700_devices.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/dvb/dvb-usb/dib0700_devices.c 2012-03-13 13:15:35.152097989 +0100 @@ -28,7 +28,7 @@ MODULE_PARM_DESC(force_lna_activation, " struct dib0700_adapter_state { int (*set_param_save) (struct dvb_frontend *, struct dvb_frontend_parameters *); -}; +} __no_const; /* Hauppauge Nova-T 500 (aka Bristol) * has a LNA on GPIO0 which is enabled by setting 1 */ diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/dvb/frontends/dib3000.h linux-2.6.32.59-pax/drivers/media/dvb/frontends/dib3000.h --- linux-2.6.32.59/drivers/media/dvb/frontends/dib3000.h 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/dvb/frontends/dib3000.h 2012-03-13 13:15:35.152097989 +0100 @@ -39,7 +39,7 @@ struct dib_fe_xfer_ops int (*fifo_ctrl)(struct dvb_frontend *fe, int onoff); int (*pid_ctrl)(struct dvb_frontend *fe, int index, int pid, int onoff); int (*tuner_pass_ctrl)(struct dvb_frontend *fe, int onoff, u8 pll_ctrl); -}; +} __no_const; #if defined(CONFIG_DVB_DIB3000MB) || (defined(CONFIG_DVB_DIB3000MB_MODULE) && defined(MODULE)) extern struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config, diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/radio/radio-cadet.c linux-2.6.32.59-pax/drivers/media/radio/radio-cadet.c --- linux-2.6.32.59/drivers/media/radio/radio-cadet.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/radio/radio-cadet.c 2012-03-13 13:15:35.152097989 +0100 @@ -347,7 +347,7 @@ static ssize_t cadet_read(struct file *f while (i < count && dev->rdsin != dev->rdsout) readbuf[i++] = dev->rdsbuf[dev->rdsout++]; - if (copy_to_user(data, readbuf, i)) + if (i > sizeof readbuf || copy_to_user(data, readbuf, i)) return -EFAULT; return i; } diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/video/cx18/cx18-driver.c linux-2.6.32.59-pax/drivers/media/video/cx18/cx18-driver.c --- linux-2.6.32.59/drivers/media/video/cx18/cx18-driver.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/video/cx18/cx18-driver.c 2012-03-13 13:15:35.156097989 +0100 @@ -56,7 +56,7 @@ static struct pci_device_id cx18_pci_tbl MODULE_DEVICE_TABLE(pci, cx18_pci_tbl); -static atomic_t cx18_instance = ATOMIC_INIT(0); +static atomic_unchecked_t cx18_instance = ATOMIC_INIT(0); /* Parameter declarations */ static int cardtype[CX18_MAX_CARDS]; @@ -800,7 +800,7 @@ static int __devinit cx18_probe(struct p struct cx18 *cx; /* FIXME - module parameter arrays constrain max instances */ - i = atomic_inc_return(&cx18_instance) - 1; + i = atomic_inc_return_unchecked(&cx18_instance) - 1; if (i >= CX18_MAX_CARDS) { printk(KERN_ERR "cx18: cannot manage card %d, driver has a " "limit of 0 - %d\n", i, CX18_MAX_CARDS - 1); diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/video/ivtv/ivtv-driver.c linux-2.6.32.59-pax/drivers/media/video/ivtv/ivtv-driver.c --- linux-2.6.32.59/drivers/media/video/ivtv/ivtv-driver.c 2012-03-04 18:49:44.000000000 +0100 +++ linux-2.6.32.59-pax/drivers/media/video/ivtv/ivtv-driver.c 2012-03-13 13:15:35.156097989 +0100 @@ -79,7 +79,7 @@ static struct pci_device_id ivtv_pci_tbl MODULE_DEVICE_TABLE(pci,ivtv_pci_tbl); /* ivtv instance counter */ -static atomic_t ivtv_instance = ATOMIC_INIT(0); +static atomic_unchecked_t ivtv_instance = ATOMIC_INIT(0); /* Parameter declarations */ static int cardtype[IVTV_MAX_CARDS]; diff -NurpX linux-2.6.32.59-pax/Documentation/dontdiff linux-2.6.32.59/drivers/media/video/omap24xxcam.c linux-2.6.32.59-pax/drivers/media/video/omap24xxcam.c --- linux-2.6.32.59/drivers/media/video/omap24xxcam.c 2012-03-04 18:49:44.00000