linux-kernel - Re: [PATCH v3 0/5] aio: fix use-after-free and missing wakeups

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Message-ID: <CAHk-=wjkXez+ugCbF3YpODQQS-g=-4poCwXaisLW4p2ZN_=hxw@mail.gmail.com>
Date:   Thu, 9 Dec 2021 10:00:50 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Benjamin LaHaise <bcrl@...ck.org>, linux-aio@...ck.org,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Ramji Jiyani <ramjiyani@...gle.com>,
        Christoph Hellwig <hch@....de>,
        Oleg Nesterov <oleg@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Martijn Coenen <maco@...roid.com>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH v3 0/5] aio: fix use-after-free and missing wakeups

On Wed, Dec 8, 2021 at 5:06 PM Eric Biggers <ebiggers@...nel.org> wrote:
>
> Careful review is appreciated; the aio poll code is very hard to work
> with, and it doesn't appear to have many tests.  I've verified that it
> passes the libaio test suite, which provides some coverage of poll.
>
> Note, it looks like io_uring has the same bugs as aio poll.  I haven't
> tried to fix io_uring.

I'm hoping Jens is looking at the io_ring case, but I'm also assuming
that I'll just get a pull request for this at some point.

It looks sane to me - my only internal cursing has been about epoll
and aio in general, not about these patches in particular.

              Linus