linux-kernel - Re: [PATCH v2 0/5] aio: fix use-after-free and missing wakeups

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Date:   Tue, 7 Dec 2021 12:17:58 +0100
From:   Christoph Hellwig <hch@....de>
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@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ramji Jiyani <ramjiyani@...gle.com>,
        Christoph Hellwig <hch@....de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Martijn Coenen <maco@...roid.com>, stable@...r.kernel.org
Subject: Re: [PATCH v2 0/5] aio: fix use-after-free and missing wakeups

On Tue, Dec 07, 2021 at 01:57:21AM -0800, Eric Biggers wrote:
> This series fixes two bugs in aio poll, and one issue with POLLFREE more
> broadly.  This is intended to replace
> "[PATCH v5] aio: Add support for the POLLFREE"
> (https://lore.kernel.org/r/20211027011834.2497484-1-ramjiyani@google.com)
> which has some bugs.
> 
> Careful review is appreciated; the aio poll code is very hard to work
> with, and I don't know of an easy way to test it.  Suggestions of any
> aio poll tests to run would be greatly appreciated.

libaio has a test for aio poll (test 22).