diff --git a/net/core/filter.c b/net/core/filter.c
index 09c60a58c82a..d832d3332c6f 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -8022,7 +8022,7 @@ BPF_CALL_3(bpf_sk_assign, struct sk_buff *, skb, struct sock *, sk, u64, flags)
 	if (sk_unhashed(sk))
 		return -EOPNOTSUPP;
 	if (sk_is_refcounted(sk) &&
-	    unlikely(!refcount_inc_not_zero(&sk->sk_refcnt)))
+	    unlikely(!refcount_inc_not_zero_acquire(&sk->sk_refcnt)))
 		return -ENOENT;
 
 	skb_orphan(skb);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 93b306d91b6d..e56beec43877 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -1061,8 +1061,8 @@ static void reqsk_timer_handler(struct timer_list *t)
 		 * hold another count to prevent use-after-free and
 		 * call reqsk_put() just before return.
 		 */
-		refcount_set(&nreq->rsk_refcnt, 2 + 1);
 		timer_setup(&nreq->rsk_timer, reqsk_timer_handler, TIMER_PINNED);
+		refcount_set_release(&nreq->rsk_refcnt, 2 + 1);
 		reqsk_queue_migrated(&inet_csk(nsk)->icsk_accept_queue, req);
 
 		req = nreq;
@@ -1141,10 +1141,14 @@ static void reqsk_timer_handler(struct timer_list *t)
 	 */
 	if (nreq) {
 		__NET_INC_STATS(net, LINUX_MIB_TCPMIGRATEREQFAILURE);
+		/* The timer was not armed, drop its reference here. */
+		reqsk_put(nreq);
 no_ownership:
 		reqsk_migrate_reset(nreq);
 		reqsk_queue_removed(queue, nreq);
-		__reqsk_free(nreq);
+		/* Drop the temporary reference and the one reserved for ehash. */
+		reqsk_put(nreq);
+		reqsk_put(nreq);
 	}
 
 drop:
@@ -1443,7 +1447,7 @@ struct sock *inet_csk_complete_hashdance(struct sock *sk, struct sock *child,
 				goto child_put;
 			}
 
-			refcount_set(&nreq->rsk_refcnt, 1);
+			refcount_set_release(&nreq->rsk_refcnt, 1);
 			if (inet_csk_reqsk_queue_add(sk, nreq, child)) {
 				__NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPMIGRATEREQSUCCESS);
 				reqsk_migrate_reset(req);
@@ -1453,7 +1457,7 @@ struct sock *inet_csk_complete_hashdance(struct sock *sk, struct sock *child,
 
 			__NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPMIGRATEREQFAILURE);
 			reqsk_migrate_reset(nreq);
-			__reqsk_free(nreq);
+			reqsk_put(nreq);
 		} else if (inet_csk_reqsk_queue_add(sk, req, child)) {
 			return child;
 		}
@@ -1496,7 +1500,7 @@ void inet_csk_listen_stop(struct sock *sk)
 		if (nsk) {
 			nreq = inet_reqsk_clone(req, nsk);
 			if (nreq) {
-				refcount_set(&nreq->rsk_refcnt, 1);
+				refcount_set_release(&nreq->rsk_refcnt, 1);
 
 				rcu_read_lock();
 				if (inet_csk_reqsk_queue_add(nsk, nreq, child)) {
@@ -1508,7 +1512,7 @@ void inet_csk_listen_stop(struct sock *sk)
 					__NET_INC_STATS(sock_net(nsk),
 							LINUX_MIB_TCPMIGRATEREQFAILURE);
 					reqsk_migrate_reset(nreq);
-					__reqsk_free(nreq);
+					reqsk_put(nreq);
 				}
 				rcu_read_unlock();
 
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 5abcb0debb27..860145d810ed 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -550,10 +550,11 @@ struct sock *__inet_lookup_established(const struct net *net,
 		if (sk->sk_hash != hash)
 			continue;
 		if (likely(inet_match(net, sk, acookie, ports, dif, sdif))) {
-			if (unlikely(!refcount_inc_not_zero(&sk->sk_refcnt)))
+			if (unlikely(!refcount_inc_not_zero_acquire(&sk->sk_refcnt)))
 				goto out;
-			if (unlikely(!inet_match(net, sk, acookie,
-						 ports, dif, sdif))) {
+			if (unlikely(hlist_nulls_unhashed_lockless(&sk->sk_nulls_node) ||
+				     !inet_match(net, sk, acookie, ports, dif,
+						 sdif))) {
 				sock_gen_put(sk);
 				goto begin;
 			}
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index a1d86026aefb..e256c55ce9f2 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -143,7 +143,7 @@ void inet_twsk_hashdance_schedule(struct inet_timewait_sock *tw,
 	 * Also note that after this point, we lost our implicit reference
 	 * so we are not allowed to use tw anymore.
 	 */
-	refcount_set(&tw->tw_refcnt, 3);
+	refcount_set_release(&tw->tw_refcnt, 3);
 
 	/* Ensure tw_refcnt has been set before tw is published.
 	 * smp_wmb() provides the necessary memory barrier to enforce this
@@ -330,7 +330,7 @@ void inet_twsk_purge(struct inet_hashinfo *hashinfo)
 			if (check_net(sock_net(sk)))
 				continue;
 
-			if (unlikely(!refcount_inc_not_zero(&sk->sk_refcnt)))
+			if (unlikely(!refcount_inc_not_zero_acquire(&sk->sk_refcnt)))
 				continue;
 
 			if (check_net(sock_net(sk))) {
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 8c9691569e01..4e0ff3b82062 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -205,7 +205,7 @@ struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb,
 	child = icsk->icsk_af_ops->syn_recv_sock(sk, skb, req, dst,
 						 NULL, &own_req, NULL);
 	if (child) {
-		refcount_set(&req->rsk_refcnt, 1);
+		refcount_set_release(&req->rsk_refcnt, 1);
 		sock_rps_save_rxhash(child, skb);
 
 		if (rsk_drop_req(req)) {
@@ -218,6 +218,8 @@ struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb,
 
 		bh_unlock_sock(child);
 		sock_put(child);
+		reqsk_put(req);
+		return NULL;
 	}
 	__reqsk_free(req);
 
diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c
index 6dfe40322fb5..33451f00c4e8 100644
--- a/net/ipv4/tcp_fastopen.c
+++ b/net/ipv4/tcp_fastopen.c
@@ -366,7 +366,7 @@ static struct sock *tcp_fastopen_create_child(struct sock *sk,
 	tcp_reset_xmit_timer(child, ICSK_TIME_RETRANS,
 			     req->timeout, false);
 
-	refcount_set(&req->rsk_refcnt, 2);
+	refcount_set_release(&req->rsk_refcnt, 2);
 
 	sk_mark_napi_id_set(child, skb);
 
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index ebd2c12e42d5..73c5b4189866 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -7825,7 +7825,9 @@ int tcp_conn_request(struct request_sock_ops *rsk_ops,
 		if (!inet_csk_reqsk_queue_add(sk, req, fastopen_sk)) {
 			bh_unlock_sock(fastopen_sk);
 			sock_put(fastopen_sk);
-			goto drop_and_free;
+			/* tcp_disconnect() already dropped one reqsk ref. */
+			reqsk_put(req);
+			goto drop;
 		}
 		READ_ONCE(sk->sk_data_ready)(sk);
 		bh_unlock_sock(fastopen_sk);
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index b111b51d69fc..1eea584d80df 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -105,10 +105,12 @@ struct sock *__inet6_lookup_established(const struct net *net,
 			continue;
 		if (!inet6_match(net, sk, saddr, daddr, ports, dif, sdif))
 			continue;
-		if (unlikely(!refcount_inc_not_zero(&sk->sk_refcnt)))
+		if (unlikely(!refcount_inc_not_zero_acquire(&sk->sk_refcnt)))
 			goto out;
 
-		if (unlikely(!inet6_match(net, sk, saddr, daddr, ports, dif, sdif))) {
+		if (unlikely(hlist_nulls_unhashed_lockless(&sk->sk_nulls_node) ||
+			     !inet6_match(net, sk, saddr, daddr, ports, dif,
+					  sdif))) {
 			sock_gen_put(sk);
 			goto begin;
 		}