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x86: uaccess_64: fix return value in __copy_from_user() 

__copy_from_user() will return invalid value 16 when it fails to
access user space and the size is 10.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Hiroshi Shimamoto 2008-11-13 18:06:04 -08:00 committed by Ingo Molnar
parent 093bac154c
commit 20a4a236c7
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/uaccess_64.h
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@ -46,7 +46,7 @@ int __copy_from_user(void *dst, const void __user *src, unsigned size)
return ret;
case 10:
__get_user_asm(*(u64 *)dst, (u64 __user *)src,
ret, "q", "", "=r", 16);
ret, "q", "", "=r", 10);
if (unlikely(ret))
return ret;
__get_user_asm(*(u16 *)(8 + (char *)dst),