From: Eric Dumazet <edumazet@google.com>
Date: Fri, 2 Oct 2015 18:43:29 +0000 (-0700)
Subject: tcp: remove BUG_ON() in tcp_check_req()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=9cfd08601f49a4536e4407286b5f07b24293e474;hp=ba8e275a457397ab06f3567cf7bef0d78a43ae7e;p=deliverable%2Flinux.git

tcp: remove BUG_ON() in tcp_check_req()

Once listener is lockless, its sk_state can change anytime.

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 897e34273ba3..9adf1e2c3170 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -578,8 +578,6 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
 	__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);