diff options
| author | Jan Beulich | 2013-10-21 10:44:37 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2013-10-26 12:27:37 +0200 |
| commit | 7a3d9b0f3abbea957b829cdfff8169872c575642 (patch) | |
| tree | 905bb8d2f62b5bee5b1523ed6dff08dc81551763 /arch/x86/include/asm/uaccess_32.h | |
| parent | x86: Unify copy_from_user() size checking (diff) | |
| download | kernel-qcow2-linux-7a3d9b0f3abbea957b829cdfff8169872c575642.tar.gz kernel-qcow2-linux-7a3d9b0f3abbea957b829cdfff8169872c575642.tar.xz kernel-qcow2-linux-7a3d9b0f3abbea957b829cdfff8169872c575642.zip | |
x86: Unify copy_to_user() and add size checking to it
Similarly to copy_from_user(), where the range check is to
protect against kernel memory corruption, copy_to_user() can
benefit from such checking too: Here it protects against kernel
information leaks.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: <arjan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/5265059502000078000FC4F6@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/uaccess_32.h')
| -rw-r--r-- | arch/x86/include/asm/uaccess_32.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/include/asm/uaccess_32.h b/arch/x86/include/asm/uaccess_32.h index c348c87cefc8..3c03a5de64d3 100644 --- a/arch/x86/include/asm/uaccess_32.h +++ b/arch/x86/include/asm/uaccess_32.h @@ -184,7 +184,4 @@ __copy_from_user_inatomic_nocache(void *to, const void __user *from, return __copy_from_user_ll_nocache_nozero(to, from, n); } -unsigned long __must_check copy_to_user(void __user *to, - const void *from, unsigned long n); - #endif /* _ASM_X86_UACCESS_32_H */ |