From 001c1a655f0a4e4ebe5d9beb47466dc5c6ab4871 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 25 Apr 2020 18:01:30 -0400
Subject: [PATCH] default csum_and_copy_to_user(): don't bother with
access_ok()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
include/net/checksum.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/include/net/checksum.h b/include/net/checksum.h
index 5f9c73c0eeb91..46754ba9d7b70 100644
--- a/include/net/checksum.h
+++ b/include/net/checksum.h
@@ -38,10 +38,8 @@ static __inline__ __wsum csum_and_copy_to_user
{
sum = csum_partial(src, len, sum);
- if (access_ok(dst, len)) {
- if (copy_to_user(dst, src, len) == 0)
- return sum;
- }
+ if (copy_to_user(dst, src, len) == 0)
+ return sum;
if (len)
*err_ptr = -EFAULT;
--
2.30.2