netdev - Re: [PATCH net] tcp: cdg: allow tcp_cdg_release() to be called multiple times

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Date:   Wed, 12 Oct 2022 08:20:16 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        netdev@...r.kernel.org, edumazet@...gle.com,
        syzkaller@...glegroups.com
Subject: Re: [PATCH net] tcp: cdg: allow tcp_cdg_release() to be called multiple
 times

Hello:

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

On Tue, 11 Oct 2022 15:07:48 -0700 you wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> Apparently, mptcp is able to call tcp_disconnect() on an already
> disconnected flow. This is generally fine, unless current congestion
> control is CDG, because it might trigger a double-free [1]
> 
> Instead of fixing MPTCP, and future bugs, we can make tcp_disconnect()
> more resilient.
> 
> [...]

Here is the summary with links:
  - [net] tcp: cdg: allow tcp_cdg_release() to be called multiple times
    https://git.kernel.org/netdev/net/c/72e560cb8c6f

You are awesome, thank you!
-- 
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