Commit e6e8869a authored by Li RongQing's avatar Li RongQing Committed by David S. Miller
Browse files

net: tcp: remove BUG_ON from tcp_v4_err 



if skb is NULL pointer, and the following access of skb's
skb_mstamp_ns will trigger panic, which is same as BUG_ON

Signed-off-by: default avatarLi RongQing <lirongqing@baidu.com>
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 307f39b0

net/ipv4/tcp_ipv4.c

+0 −1
Original line number Diff line number Diff line
@@ -542,7 +542,6 @@ int tcp_v4_err(struct sk_buff *icmp_skb, u32 info) 
		icsk->icsk_rto = inet_csk_rto_backoff(icsk, TCP_RTO_MAX);



		skb = tcp_rtx_queue_head(sk);

		BUG_ON(!skb);



		tcp_mstamp_refresh(tp);

		delta_us = (u32)(tp->tcp_mstamp - tcp_skb_timestamp_us(skb));