diff --git a/[refs] b/[refs]
index 1ec10979e97d..2cc23a13e65d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3015d5d4e5b15eddea272a697e83391100581932
+refs/heads/master: ff9b5e0f08cb650d113eef0c654f931c0a7ae730
diff --git a/trunk/net/ipv4/tcp_input.c b/trunk/net/ipv4/tcp_input.c
index caf3c41dcc8c..511b738f118a 100644
--- a/trunk/net/ipv4/tcp_input.c
+++ b/trunk/net/ipv4/tcp_input.c
@@ -127,7 +127,7 @@ static void tcp_measure_rcv_mss(struct sock *sk,
 	/* skb->len may jitter because of SACKs, even if peer
 	 * sends good full-sized frames.
 	 */
-	len = skb->len;
+	len = skb_shinfo(skb)->gso_size ?: skb->len;
 	if (len >= icsk->icsk_ack.rcv_mss) {
 		icsk->icsk_ack.rcv_mss = len;
 	} else {