From 835b94e05c92e6e8df48112770e624cee192a057 Mon Sep 17 00:00:00 2001
From: Danilo Krummrich <danilokrummrich@dk-develop.de>
Date: Tue, 10 Apr 2018 16:31:41 -0700
Subject: [PATCH] fs/proc/proc_sysctl.c: remove redundant link check in
proc_sys_link_fill_cache()
proc_sys_link_fill_cache() does not need to check whether we're called
for a link - it's already done by scan().
Link: http://lkml.kernel.org/r/20180228013506.4915-2-danilokrummrich@dk-develop.de
Signed-off-by: Danilo Krummrich <danilokrummrich@dk-develop.de>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "Luis R . Rodriguez" <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/proc/proc_sysctl.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 7da10e5952976..4654fc3c246fa 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -712,12 +712,9 @@ static bool proc_sys_link_fill_cache(struct file *file,
if (IS_ERR(head))
return false;
- if (S_ISLNK(table->mode)) {
- /* It is not an error if we can not follow the link ignore it */
- int err = sysctl_follow_link(&head, &table);
- if (err)
- goto out;
- }
+ /* It is not an error if we can not follow the link ignore it */
+ if (sysctl_follow_link(&head, &table))
+ goto out;
ret = proc_sys_fill_cache(file, ctx, head, table);
out:
--
GitLab