From b7b89be8d4ab0c5e6eb0cdfb1108af08a1cd088f Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Fri, 02 Oct 2015 11:43:29 -0700
Subject: [PATCH] tcp: remove BUG_ON() in tcp_check_req()

Once listener is lockless, its sk_state can change anytime.

Change-Id: I3a8c4aa4974294b865d79ea997df4c8cee5ffbc2
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 0f01788..28f72aa 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -511,8 +511,6 @@
 	__be32 flg = tcp_flag_word(th) & (TCP_FLAG_RST|TCP_FLAG_SYN|TCP_FLAG_ACK);
 	bool paws_reject = false;
 
-	BUG_ON(fastopen == (sk->sk_state == TCP_LISTEN));
-
 	tmp_opt.saw_tstamp = 0;
 	if (th->doff > (sizeof(struct tcphdr)>>2)) {
 		tcp_parse_options(skb, &tmp_opt, 0, NULL);