From eb9e420e7bb85edde99ec21d0643e32711311fdd Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 22 Aug 2016 00:23:07 -0400
Subject: [PATCH] sparc32: fix copy_from_user()
Cc: stable@vger.kernel.org
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
arch/sparc/include/asm/uaccess_32.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
index 341a5a133f483..035c89b7df5d8 100644
--- a/arch/sparc/include/asm/uaccess_32.h
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -269,8 +269,10 @@ static inline unsigned long copy_from_user(void *to, const void __user *from, un
if (!__builtin_constant_p(n))
check_object_size(to, n, false);
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)
--
2.39.5