cgroup: duplicate cgroup reference when cloning sockets

[deliverable/linux.git] / kernel / cgroup.c

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index d1c51b7f5221fbfbb85ed3d12e4918a970713829..5e8dab5bf9adb93205781083a6cf5312da140fdc 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -6270,6 +6270,12 @@ void cgroup_sk_alloc(struct sock_cgroup_data *skcd)
        if (cgroup_sk_alloc_disabled)
                return;
 
+       /* Socket clone path */
+       if (skcd->val) {
+               cgroup_get(sock_cgroup_ptr(skcd));
+               return;
+       }
+
        rcu_read_lock();
 
        while (true) {