diff options
| author |   Danilo Krummrich <danilokrummrich@dk-develop.de> | 2018-04-10 16:31:41 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:33 -0700 |
| commit | 835b94e05c92e6e8df48112770e624cee192a057 (patch) | |
| tree | 919e263799d0a5c3d224bb578ad86353c7f58cb1 /fs/proc/proc_sysctl.c | |
| parent | fs/proc/proc_sysctl.c: fix potential page fault while unregistering sysctl table (diff) | |
| download | wireguard-linux-835b94e05c92e6e8df48112770e624cee192a057.tar.xz wireguard-linux-835b94e05c92e6e8df48112770e624cee192a057.zip | |
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>
Diffstat (limited to 'fs/proc/proc_sysctl.c')
| -rw-r--r-- | fs/proc/proc_sysctl.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 7da10e595297..4654fc3c246f 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: |