diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 2761646fd..83a8de677 100755
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -815,7 +815,7 @@ static struct sock *unix_create1(struct net *net, struct socket *sock, int kern)
 
 	sk->sk_allocation	= GFP_KERNEL_ACCOUNT;
 	sk->sk_write_space	= unix_write_space;
-	sk->sk_max_ack_backlog	= net->unx.sysctl_max_dgram_qlen;
+	sk->sk_max_ack_backlog	= READ_ONCE(net->unx.sysctl_max_dgram_qlen);
 	sk->sk_destruct		= unix_sock_destructor;
 	u = unix_sk(sk);
 	u->inflight = 0;