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

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Message-ID: <CANn89iJrm1yhQOdguVEHh5B=YJGJig-kV3QFkXRat=BWAOHuMQ@mail.gmail.com>
Date:   Wed, 26 Jan 2022 10:02:27 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     Paolo Abeni <pabeni@...hat.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, Jan 26, 2022 at 8:35 AM Paolo Abeni <pabeni@...hat.com> wrote:
>
> 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)

Sure, I am going to CC you on the upcoming patch (in few minutes)

Thanks !