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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 09:00:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 09:00:19 -0800
commit17c330f98383629cfd359ee62b3adde1d2a3ff7c (patch)
tree876bed8fc7de7d404fae579035a948c46a7f05d4 /arch/sparc/include
parent48e902f0a3aea4b6b3a73e9d277b92024a493e6d (diff)
parent7466bd3caab6bd1d0095de957affbacd02ca58a7 (diff)
downloadop-kernel-dev-17c330f98383629cfd359ee62b3adde1d2a3ff7c.zip
op-kernel-dev-17c330f98383629cfd359ee62b3adde1d2a3ff7c.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix clock event multiplier printf format. sparc64: Use clock{source,events}_calc_mult_shift(). sparc64: Use free_bootmem_late() in mdesc_lmb_free(). sparc: Add alignment and emulation fault perf events. sparc64: Add syscall tracepoint support. sparc: Stop trying to be so fancy and use __builtin_{memcpy,memset}() sparc: Use __builtin_object_size() to validate the buffer size for copy_from_user() sparc64: Add some missing __kprobes annotations to kernel fault paths. sparc64: Use kprobes_built_in() to avoid ifdefs in fault_64.c sparc: Validate that kprobe address is 4-byte aligned. sparc64: Don't specify IRQF_SHARED for LDC interrupts. sparc64: Fix stack debugging IRQ stack regression. sparc64: Fix overly strict range type matching for PCI devices.
Diffstat (limited to 'arch/sparc/include')
-rw-r--r--arch/sparc/include/asm/string_32.h78
-rw-r--r--arch/sparc/include/asm/string_64.h25
-rw-r--r--arch/sparc/include/asm/thread_info_64.h2
-rw-r--r--arch/sparc/include/asm/uaccess_32.h15
-rw-r--r--arch/sparc/include/asm/uaccess_64.h23
-rw-r--r--arch/sparc/include/asm/unistd.h2
6 files changed, 41 insertions, 104 deletions
diff --git a/arch/sparc/include/asm/string_32.h b/arch/sparc/include/asm/string_32.h
index 6c5fddb..edf196e 100644
--- a/arch/sparc/include/asm/string_32.h
+++ b/arch/sparc/include/asm/string_32.h
@@ -16,8 +16,6 @@
#ifdef __KERNEL__
extern void __memmove(void *,const void *,__kernel_size_t);
-extern __kernel_size_t __memcpy(void *,const void *,__kernel_size_t);
-extern __kernel_size_t __memset(void *,int,__kernel_size_t);
#ifndef EXPORT_SYMTAB_STROPS
@@ -32,82 +30,10 @@ extern __kernel_size_t __memset(void *,int,__kernel_size_t);
})
#define __HAVE_ARCH_MEMCPY
-
-static inline void *__constant_memcpy(void *to, const void *from, __kernel_size_t n)
-{
- extern void __copy_1page(void *, const void *);
-
- if(n <= 32) {
- __builtin_memcpy(to, from, n);
- } else if (((unsigned int) to & 7) != 0) {
- /* Destination is not aligned on the double-word boundary */
- __memcpy(to, from, n);
- } else {
- switch(n) {
- case PAGE_SIZE:
- __copy_1page(to, from);
- break;
- default:
- __memcpy(to, from, n);
- break;
- }
- }
- return to;
-}
-
-static inline void *__nonconstant_memcpy(void *to, const void *from, __kernel_size_t n)
-{
- __memcpy(to, from, n);
- return to;
-}
-
-#undef memcpy
-#define memcpy(t, f, n) \
-(__builtin_constant_p(n) ? \
- __constant_memcpy((t),(f),(n)) : \
- __nonconstant_memcpy((t),(f),(n)))
+#define memcpy(t, f, n) __builtin_memcpy(t, f, n)
#define __HAVE_ARCH_MEMSET
-
-static inline void *__constant_c_and_count_memset(void *s, char c, __kernel_size_t count)
-{
- extern void bzero_1page(void *);
- extern __kernel_size_t __bzero(void *, __kernel_size_t);
-
- if(!c) {
- if(count == PAGE_SIZE)
- bzero_1page(s);
- else
- __bzero(s, count);
- } else {
- __memset(s, c, count);
- }
- return s;
-}
-
-static inline void *__constant_c_memset(void *s, char c, __kernel_size_t count)
-{
- extern __kernel_size_t __bzero(void *, __kernel_size_t);
-
- if(!c)
- __bzero(s, count);
- else
- __memset(s, c, count);
- return s;
-}
-
-static inline void *__nonconstant_memset(void *s, char c, __kernel_size_t count)
-{
- __memset(s, c, count);
- return s;
-}
-
-#undef memset
-#define memset(s, c, count) \
-(__builtin_constant_p(c) ? (__builtin_constant_p(count) ? \
- __constant_c_and_count_memset((s), (c), (count)) : \
- __constant_c_memset((s), (c), (count))) \
- : __nonconstant_memset((s), (c), (count)))
+#define memset(s, c, count) __builtin_memset(s, c, count)
#define __HAVE_ARCH_MEMSCAN
diff --git a/arch/sparc/include/asm/string_64.h b/arch/sparc/include/asm/string_64.h
index 43161f2..9623bc2 100644
--- a/arch/sparc/include/asm/string_64.h
+++ b/arch/sparc/include/asm/string_64.h
@@ -15,8 +15,6 @@
#include <asm/asi.h>
-extern void *__memset(void *,int,__kernel_size_t);
-
#ifndef EXPORT_SYMTAB_STROPS
/* First the mem*() things. */
@@ -24,29 +22,10 @@ extern void *__memset(void *,int,__kernel_size_t);
extern void *memmove(void *, const void *, __kernel_size_t);
#define __HAVE_ARCH_MEMCPY
-extern void *memcpy(void *, const void *, __kernel_size_t);
+#define memcpy(t, f, n) __builtin_memcpy(t, f, n)
#define __HAVE_ARCH_MEMSET
-extern void *__builtin_memset(void *,int,__kernel_size_t);
-
-static inline void *__constant_memset(void *s, int c, __kernel_size_t count)
-{
- extern __kernel_size_t __bzero(void *, __kernel_size_t);
-
- if (!c) {
- __bzero(s, count);
- return s;
- } else
- return __memset(s, c, count);
-}
-
-#undef memset
-#define memset(s, c, count) \
-((__builtin_constant_p(count) && (count) <= 32) ? \
- __builtin_memset((s), (c), (count)) : \
- (__builtin_constant_p(c) ? \
- __constant_memset((s), (c), (count)) : \
- __memset((s), (c), (count))))
+#define memset(s, c, count) __builtin_memset(s, c, count)
#define __HAVE_ARCH_MEMSCAN
diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
index 1b45a7b..7257ebb 100644
--- a/arch/sparc/include/asm/thread_info_64.h
+++ b/arch/sparc/include/asm/thread_info_64.h
@@ -227,6 +227,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
/* flag bit 8 is available */
#define TIF_SECCOMP 9 /* secure computing */
#define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */
+#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */
/* flag bit 11 is available */
/* NOTE: Thread flags >= 12 should be ones we have no interest
* in using in assembly, else we can't use the mask as
@@ -246,6 +247,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define _TIF_32BIT (1<<TIF_32BIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
+#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_FREEZE (1<<TIF_FREEZE)
diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
index 8303ac4..489d2ba 100644
--- a/arch/sparc/include/asm/uaccess_32.h
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -260,8 +260,23 @@ static inline unsigned long __copy_to_user(void __user *to, const void *from, un
return __copy_user(to, (__force void __user *) from, n);
}
+extern void copy_from_user_overflow(void)
+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
+ __compiletime_error("copy_from_user() buffer size is not provably correct")
+#else
+ __compiletime_warning("copy_from_user() buffer size is not provably correct")
+#endif
+;
+
static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
{
+ int sz = __compiletime_object_size(to);
+
+ if (unlikely(sz != -1 && sz < n)) {
+ copy_from_user_overflow();
+ return -EFAULT;
+ }
+
if (n && __access_ok((unsigned long) from, n))
return __copy_user((__force void __user *) to, from, n);
else
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index 9ea271e..dbc1416 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -6,6 +6,7 @@
*/
#ifdef __KERNEL__
+#include <linux/errno.h>
#include <linux/compiler.h>
#include <linux/string.h>
#include <linux/thread_info.h>
@@ -204,6 +205,14 @@ __asm__ __volatile__( \
extern int __get_user_bad(void);
+extern void copy_from_user_overflow(void)
+#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
+ __compiletime_error("copy_from_user() buffer size is not provably correct")
+#else
+ __compiletime_warning("copy_from_user() buffer size is not provably correct")
+#endif
+;
+
extern unsigned long __must_check ___copy_from_user(void *to,
const void __user *from,
unsigned long size);
@@ -212,10 +221,16 @@ extern unsigned long copy_from_user_fixup(void *to, const void __user *from,
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);
-
- if (unlikely(ret))
- ret = copy_from_user_fixup(to, from, size);
+ unsigned long ret = (unsigned long) -EFAULT;
+ int sz = __compiletime_object_size(to);
+
+ if (likely(sz == -1 || sz >= size)) {
+ ret = ___copy_from_user(to, from, size);
+ if (unlikely(ret))
+ ret = copy_from_user_fixup(to, from, size);
+ } else {
+ copy_from_user_overflow();
+ }
return ret;
}
#define __copy_from_user copy_from_user
diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h
index d8d25bd..cb4b9bf 100644
--- a/arch/sparc/include/asm/unistd.h
+++ b/arch/sparc/include/asm/unistd.h
@@ -398,7 +398,7 @@
#define __NR_perf_event_open 327
#define __NR_recvmmsg 328
-#define NR_SYSCALLS 329
+#define NR_syscalls 329
#ifdef __32bit_syscall_numbers__
/* Sparc 32-bit only has the "setresuid32", "getresuid32" variants,
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