@@ -2169,6 +2169,12 @@ static void __mptcp_close_ssk(struct sock *sk, struct sock *ssk,
if (ssk == msk->last_snd)
msk->last_snd = NULL;
+ if (ssk == msk->ack_hint)
+ msk->ack_hint = NULL;
+
+ if (ssk == msk->first)
+ msk->first = NULL;
+
if (msk->subflow && ssk == msk->subflow->sk)
mptcp_dispose_initial_subflow(msk);
}
@@ -3297,6 +3303,9 @@ static int mptcp_stream_accept(struct socket *sock, struct socket *newsock,
/* PM/worker can now acquire the first subflow socket
* lock without racing with listener queue cleanup,
* we can notify it, if needed.
+ *
+ * Even if remote has reset the initial subflow by now
+ * the refcnt is still at least one.
*/
subflow = mptcp_subflow_ctx(msk->first);
list_add(&subflow->node, &msk->conn_list);