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default csum_and_copy_to_user(): don't bother with access_ok()
author
Al Viro
<viro@zeniv.linux.org.uk>
Sat, 25 Apr 2020 22:01:30 +0000
(18:01 -0400)
committer
Al Viro
<viro@zeniv.linux.org.uk>
Fri, 29 May 2020 20:11:50 +0000
(16:11 -0400)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
include/net/checksum.h
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diff --git
a/include/net/checksum.h
b/include/net/checksum.h
index
5f9c73c
..
46754ba
100644
(file)
--- 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;