Messages in this thread Patch in this message | | | Date | Thu, 13 Nov 2008 18:06:04 -0800 | From | Hiroshi Shimamoto <> | Subject | [PATCH] x86: uaccess_64: fix return value in __copy_from_user() |
| |
From: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
__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> --- arch/x86/include/asm/uaccess_64.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h index 543ba88..84210c4 100644 --- a/arch/x86/include/asm/uaccess_64.h +++ b/arch/x86/include/asm/uaccess_64.h @@ -48,7 +48,7 @@ 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), -- 1.5.6
| |