netdev - Re: [PATCH v1 net] tcp: Clean up kernel listener's reqsk in inet_twsk

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Message-Id: <166567981605.2135.16734103655927008557.git-patchwork-notify@kernel.org>
Date:   Thu, 13 Oct 2022 16:50:16 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Kuniyuki Iwashima <kuniyu@...zon.com>
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, yoshfuji@...ux-ipv6.org, dsahern@...nel.org,
        kuni1840@...il.com, netdev@...r.kernel.org,
        syzkaller@...glegroups.com
Subject: Re: [PATCH v1 net] tcp: Clean up kernel listener's reqsk in
 inet_twsk_purge()

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Wed, 12 Oct 2022 07:50:36 -0700 you wrote:
> Eric Dumazet reported a use-after-free related to the per-netns ehash
> series. [0]
> 
> When we create a TCP socket from userspace, the socket always holds a
> refcnt of the netns.  This guarantees that a reqsk timer is always fired
> before netns dismantle.  Each reqsk has a refcnt of its listener, so the
> listener is not freed before the reqsk, and the net is not freed before
> the listener as well.
> 
> [...]

Here is the summary with links:
  - [v1,net] tcp: Clean up kernel listener's reqsk in inet_twsk_purge()
    https://git.kernel.org/netdev/net/c/740ea3c4a0b2

You are awesome, thank you!
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