--- x/net/core/skmsg.c
+++ y/net/core/skmsg.c
@@ -417,7 +417,9 @@ int sk_msg_recvmsg(struct sock *sk, stru
 	int peek = flags & MSG_PEEK;
 	struct sk_msg *msg_rx;
 	int i, copied = 0;
+	static DEFINE_MUTEX(lk);
 
+	mutex_lock(&lk);
 	msg_rx = sk_psock_peek_msg(psock);
 	while (copied != len) {
 		struct scatterlist *sge;
@@ -485,6 +487,7 @@ int sk_msg_recvmsg(struct sock *sk, stru
 		msg_rx = sk_psock_peek_msg(psock);
 	}
 out:
+	mutex_unlock(&lk);
 	return copied;
 }
 EXPORT_SYMBOL_GPL(sk_msg_recvmsg);