1 files changed, 2 insertions, 1 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index ef8f9d4dae85..e22b4f0305a3 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -736,7 +736,8 @@ static inline __u32 tcp_current_ssthresh(const struct sock *sk)
 
 static inline void tcp_sync_left_out(struct tcp_sock *tp)
 {
-        BUG_ON(tp->sacked_out + tp->lost_out > tp->packets_out);
+        BUG_ON(tp->rx_opt.sack_ok &&
+               (tp->sacked_out + tp->lost_out > tp->packets_out));
         tp->left_out = tp->sacked_out + tp->lost_out;
 }