diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2020-08-13 20:33:42 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-19 08:14:47 +0200 |
| commit | 38de4308c5c3319ae9c815b6d6aa8d2b5804bace (patch) | |
| tree | 4bd73ee8c9e3abe7ee6c0391ea4020cad31f3606 /kernel | |
| parent | 37274b5c9b88b7dd7ba1f4ecc947be64815a8a50 (diff) | |
cgroup: add missing skcd->no_refcnt check in cgroup_sk_clone()
Add skcd->no_refcnt check which is missed when backporting
ad0f75e5f57c ("cgroup: fix cgroup_sk_alloc() for sk_clone_lock()").
This patch is needed in stable-4.9, stable-4.14 and stable-4.19.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 6ae98c714edd..2a879d34bbe5 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -5957,6 +5957,8 @@ void cgroup_sk_clone(struct sock_cgroup_data *skcd) { /* Socket clone path */ if (skcd->val) { + if (skcd->no_refcnt) + return; /* * We might be cloning a socket which is left in an empty * cgroup and the cgroup might have already been rmdir'd. |