linux-kernel - Re: syzbot + epoll

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Message-ID: <CANn89i+vKjBZAC-Htt9K6+WxFHaSH190Mm9WMiy2ZUkuQJZ0Gg@mail.gmail.com>
Date:   Tue, 21 Mar 2023 08:43:20 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, Xiumei Mu <xmu@...hat.com>,
        Jacob Keller <jacob.e.keller@...el.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Hillf Danton <hdanton@...a.com>
Subject: Re: syzbot + epoll

On Tue, Mar 21, 2023 at 8:20 AM Paolo Abeni <pabeni@...hat.com> wrote:

> (adding Hillf, as was looking to this issue, too)
>
> The fix LGTM and syzkaller says it addresses the issue:
>
> https://groups.google.com/g/syzkaller-bugs/c/oiBUmGsqz_Q/m/1IQ4vbROAgAJ
>
> I see Andrew removed the patch from the -mm tree. I guess at this point
> a new version of "epoll: use refcount to reduce ep_mutex contention",
> including the above is needed?
>
> If the above is correct, would a co-devel tag fit you Eric?

Squashing patches make sense for sure, thanks.