From: Jens Axboe <axboe@kernel.dk>
To: Pavel Begunkov <asml.silence@gmail.com>,
io-uring@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] io_uring: Fix ->data corruption on re-enqueue
Date: Mon, 23 Mar 2020 08:25:14 -0600 [thread overview]
Message-ID: <e48d707c-9ee9-a455-651a-85e16d11eb74@kernel.dk> (raw)
In-Reply-To: <dfc0b13b8ccc5f7780fd94c1f7e4db724ac7513d.1584951486.git.asml.silence@gmail.com>
On 3/23/20 2:19 AM, Pavel Begunkov wrote:
> work->data and work->list are shared in union. io_wq_assign_next() sets
> ->data if a req having a linked_timeout, but then io-wq may want to use
> work->list, e.g. to do re-enqueue of a request, so corrupting ->data.
>
> Don't need ->data, remove it and get linked_timeout through @link_list.
Thanks!
--
Jens Axboe
prev parent reply other threads:[~2020-03-23 14:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-22 21:23 [PATCH 1/1] io_uring: Fix ->data corruption on re-enqueue Pavel Begunkov
2020-03-23 1:28 ` Jens Axboe
2020-03-23 8:19 ` [PATCH v2] " Pavel Begunkov
2020-03-23 14:25 ` Jens Axboe [this message]
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