--- x/drivers/net/ipvlan/ipvlan_core.c
+++ y/drivers/net/ipvlan/ipvlan_core.c
@@ -426,6 +426,7 @@ static noinline_for_stack int ipvlan_pro
 		.daddr = ip4h->daddr,
 		.saddr = ip4h->saddr,
 	};
+	struct sock *sk;
 
 	rt = ip_route_output_flow(net, &fl4, NULL);
 	if (IS_ERR(rt))
@@ -439,7 +440,12 @@ static noinline_for_stack int ipvlan_pro
 
 	memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
 
+	sk = skb->sk;
+	if (!sk)
+		goto err;
+	refcount_inc(&sk->sk_wmem_alloc);
 	err = ip_local_out(net, skb->sk, skb);
+	sk_free(sk);
 	if (unlikely(net_xmit_eval(err)))
 		DEV_STATS_INC(dev, tx_errors);
 	else
--- x/kernel/rcu/tree.c
+++ y/kernel/rcu/tree.c
@@ -4025,6 +4025,7 @@ static void rcu_barrier_entrain(struct r
 	wake_nocb = was_alldone && rcu_segcblist_pend_cbs(&rdp->cblist);
 	if (rcu_segcblist_entrain(&rdp->cblist, &rdp->barrier_head)) {
 		atomic_inc(&rcu_state.barrier_cpu_count);
+		wake_nocb = true;
 	} else {
 		debug_rcu_head_unqueue(&rdp->barrier_head);
 		rcu_barrier_trace(TPS("IRQNQ"), -1, rcu_state.barrier_sequence);