linux-kernel - Re: [net-next v1] tcp: don't free a FIN sk_buff in tcp_remove_empty

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Date:   Tue, 26 Oct 2021 12:20:06 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Jon Maxwell <jmaxwell37@...il.com>
Cc:     edumazet@...gle.com, davem@...emloft.net, yoshfuji@...ux-ipv6.org,
        dsahern@...nel.org, kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [net-next v1] tcp: don't free a FIN sk_buff in tcp_remove_empty_skb()

Hello:

This patch was applied to netdev/net-next.git (master)
by David S. Miller <davem@...emloft.net>:

On Mon, 25 Oct 2021 10:59:03 +1100 you wrote:
> v1: Implement a more general statement as recommended by Eric Dumazet. The
> sequence number will be advanced, so this check will fix the FIN case and
> other cases.
> 
> A customer reported sockets stuck in the CLOSING state. A Vmcore revealed that
> the write_queue was not empty as determined by tcp_write_queue_empty() but the
> sk_buff containing the FIN flag had been freed and the socket was zombied in
> that state. Corresponding pcaps show no FIN from the Linux kernel on the wire.
> 
> [...]

Here is the summary with links:
  - [net-next,v1] tcp: don't free a FIN sk_buff in tcp_remove_empty_skb()
    https://git.kernel.org/netdev/net-next/c/cf12e6f91246

You are awesome, thank you!
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