Commit 20a4a236 authored Nov 13, 2008 by Hiroshi Shimamoto Committed by Ingo Molnar Nov 18, 2008

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>

parent 093bac15

arch/x86/include/asm/uaccess_64.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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),