On 2022/05/02 23:12, Haakon Bugge wrote:

quoted

+	/* TCP timer functions might access net namespace even after
+	 * a process which created this net namespace terminated.
+	 */
+	if (!sk->sk_net_refcnt) {
+		sk->sk_net_refcnt = 1;
+		get_net_track(net, &sk->ns_tracker, GFP_KERNEL);

Don't you need a corresponding put_net_track()?

__sk_free() and __sk_destruct() will do if sk->sk_net_refcnt is set.

quoted

+		sock_inuse_add(net, 1);
+	}