From e258d3404fe81d8dd51a9a5e1b0312bfbb732d31 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 22 Aug 2016 00:23:07 -0400 Subject: [PATCH 1/1] sparc32: fix copy_from_user() commit 917400cecb4b52b5cde5417348322bb9c8272fa6 upstream. Acked-by: David S. Miller Signed-off-by: Al Viro [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- 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 8303ac481034..43c2a0df4368 100644 --- a/arch/sparc/include/asm/uaccess_32.h +++ b/arch/sparc/include/asm/uaccess_32.h @@ -264,8 +264,10 @@ 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) -- 2.39.2