diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 42a319f8953cdac816433b11325315271c8e4e22..789ce59f04c4971363360e5f3a7bc504b8291e3b 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2616,6 +2616,13 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 
 	mutex_lock(&po->pg_vec_lock);
 
+	/* packet_sendmsg() check on tx_ring.pg_vec was lockless,
+	 * we need to confirm it under protection of pg_vec_lock.
+	 */
+	if (unlikely(!po->tx_ring.pg_vec)) {
+		err = -EBUSY;
+		goto out;
+	}
 	if (likely(saddr == NULL)) {
 		dev	= packet_cached_dev_get(po);
 		proto	= po->num;