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| author |   Li RongQing <lirongqing@baidu.com> | 2018-11-09 17:04:51 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-11-09 15:16:29 -0800 |
| commit | e6e8869aed897a021fafa6f412e9e4b7e2ea6cd3 (patch) | |
| tree | 616f7baee9ce68fb1ab53b45b5af1c3e47fbb5dc /net | |
| parent | xen/netfront: remove unnecessary wmb (diff) | |
| download | linux-dev-e6e8869aed897a021fafa6f412e9e4b7e2ea6cd3.tar.xz linux-dev-e6e8869aed897a021fafa6f412e9e4b7e2ea6cd3.zip | |
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: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index a336787d75e5..5424a4077c27 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -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)); |