sparc32: fix copy_from_user()

commit 917400cecb4b52b5cde5417348322bb9c8272fa6 upstream.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
index 53a28dd59f59582b91ec9da33313713d94fe192c..01f602858de19012951d75ce1294bbd09675a89b 100644 (file)
--- a/arch/sparc/include/asm/uaccess_32.h
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -265,8 +265,10 @@ static inline unsigned long copy_from_user(void *to, const void __user *from, un
 {
        if (n && __access_ok((unsigned long) from, n))
                return __copy_user((__force void __user *) to, from, n);
-       else
+       else {
+               memset(to, 0, n);
                return n;
+       }
 }
 
 static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)