Commit 20a4a236 authored by Hiroshi Shimamoto's avatar Hiroshi Shimamoto Committed by Ingo Molnar

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: default avatarHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 093bac15
...@@ -46,7 +46,7 @@ int __copy_from_user(void *dst, const void __user *src, unsigned size) ...@@ -46,7 +46,7 @@ int __copy_from_user(void *dst, const void __user *src, unsigned size)
return ret; return ret;
case 10: case 10:
__get_user_asm(*(u64 *)dst, (u64 __user *)src, __get_user_asm(*(u64 *)dst, (u64 __user *)src,
ret, "q", "", "=r", 16); ret, "q", "", "=r", 10);
if (unlikely(ret)) if (unlikely(ret))
return ret; return ret;
__get_user_asm(*(u16 *)(8 + (char *)dst), __get_user_asm(*(u16 *)(8 + (char *)dst),
......
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