netdev - Re: [PATCH net-next 6/6] ipv4/tcp: do not use per netns ctl sockets

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Message-ID: <3ecef3c4c1d158fc1c5812918e1710bce57c4812.camel@redhat.com>
Date:   Wed, 26 Jan 2022 17:35:06 +0100
From:   Paolo Abeni <pabeni@...hat.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        netdev <netdev@...r.kernel.org>,
        MPTCP Upstream <mptcp@...ts.linux.dev>
Subject: Re: [PATCH net-next 6/6] ipv4/tcp: do not use per netns ctl sockets

On Wed, 2022-01-26 at 08:24 -0800, Eric Dumazet wrote:
> I was working a fix. syzbot found the issue yesterday before I went to bed ;)

I know that is not a nice way to get some rest :(

> (And this is not related to MPTCP)
> 
> My plan is to make struct inet_timewait_death_row not a sub-strutcure
> of struct netns_ipv4
> 
> (the atomic_t tw_count becomes a refcount_t as a bonus)

Sounds good. We can test the patch, if that helps (e.g. if syzbot lacks
a repro or the repro is not very reliable)

Thanks!

Paolo