netdev - Re: [PATCH net-next 1/3] tcp: fix __tcp_close() to only send RST when required

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Message-ID: <CADVnQykr+OfAHHV_qdPwhYM2psAtRpdKn8cD6=aR1Pz+rZuyhQ@mail.gmail.com>
Date: Wed, 3 Sep 2025 11:07:26 -0400
From: Neal Cardwell <ncardwell@...gle.com>
To: Eric Dumazet <edumazet@...gle.com>
Cc: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
	Kuniyuki Iwashima <kuniyu@...gle.com>, netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH net-next 1/3] tcp: fix __tcp_close() to only send RST when required

On Wed, Sep 3, 2025 at 4:47 AM Eric Dumazet <edumazet@...gle.com> wrote:
>
> If the receive queue contains payload that was already
> received, __tcp_close() can send an unexpected RST.
>
> Refine the code to take tp->copied_seq into account,
> as we already do in tcp recvmsg().
>
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---

Reviewed-by: Neal Cardwell <ncardwell@...gle.com>

Thanks, Eric!
neal