diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 83d11cd2eb65df..abae5196cd3a5b 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2814,8 +2814,10 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs)
 		return -EBUSY;
 
 	if (before(TCP_SKB_CB(skb)->seq, tp->snd_una)) {
-		if (before(TCP_SKB_CB(skb)->end_seq, tp->snd_una))
-			BUG();
+		if (unlikely(before(TCP_SKB_CB(skb)->end_seq, tp->snd_una))) {
+			WARN_ON_ONCE(1);
+			return -EINVAL;
+		}
 		if (tcp_trim_head(sk, skb, tp->snd_una - TCP_SKB_CB(skb)->seq))
 			return -ENOMEM;
 	}
@@ -3312,6 +3314,7 @@ static void tcp_connect_init(struct sock *sk)
 	sock_reset_flag(sk, SOCK_DONE);
 	tp->snd_wnd = 0;
 	tcp_init_wl(tp, 0);
+	tcp_write_queue_purge(sk);
 	tp->snd_una = tp->write_seq;
 	tp->snd_sml = tp->write_seq;
 	tp->snd_up = tp->write_seq;