1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 055721d8495e..df516d4eca96 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1224,7 +1224,8 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
 
         tp->left_out = tp->sacked_out + tp->lost_out;
 
-        if ((reord < tp->fackets_out) && icsk->icsk_ca_state != TCP_CA_Loss)
+        if ((reord < tp->fackets_out) && icsk->icsk_ca_state != TCP_CA_Loss &&
+            (tp->frto_highmark && after(tp->snd_una, tp->frto_highmark)))
                 tcp_update_reordering(sk, ((tp->fackets_out + 1) - reord), 0);
 
 #if FASTRETRANS_DEBUG > 0