diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index 61843c6d7a476dc54e01dd19dc1e36b4c637030a..4960e2b6bd7f7247f1a8db977242149194790301 100644
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -329,7 +329,7 @@ void tcp_update_metrics(struct sock *sk)
 	int m;
 
 	sk_dst_confirm(sk);
-	if (net->ipv4.sysctl_tcp_nometrics_save || !dst)
+	if (READ_ONCE(net->ipv4.sysctl_tcp_nometrics_save) || !dst)
 		return;
 
 	rcu_read_lock();