From 7a3d9b0f3abbea957b829cdfff8169872c575642 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 21 Oct 2013 09:44:37 +0100 Subject: 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 Cc: Cc: Linus Torvalds Cc: Andrew Morton Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/5265059502000078000FC4F6@nat28.tlf.novell.com Signed-off-by: Ingo Molnar Cc: Arjan van de Ven --- arch/x86/include/asm/uaccess_32.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch/x86/include/asm/uaccess_32.h') 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 */ -- cgit