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From: Jens Axboe <axboe@kernel.dk>
To: Olivier Langlois <olivier@trillion01.com>,
	Pavel Begunkov <asml.silence@gmail.com>,
	io-uring@vger.kernel.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org, gregkh@linuxfoundation.org
Subject: Re: [PATCH io_uring backport to 5.13.y] io_uring: Fix race condition when sqp thread goes to sleep
Date: Sun, 25 Jul 2021 13:10:22 -0600	[thread overview]
Message-ID: <ca9be2ad-711e-51a3-9c5d-9472a1fad625@kernel.dk> (raw)
In-Reply-To: <82a82077d8b02166482df754b1abb7c3fbc3c560.1627189961.git.olivier@trillion01.com>

On 7/24/21 11:07 PM, Olivier Langlois wrote:
> [ Upstream commit 997135017716 ("io_uring: Fix race condition when sqp thread goes to sleep") ]
> 
> If an asynchronous completion happens before the task is preparing
> itself to wait and set its state to TASK_INTERRUPTIBLE, the completion
> will not wake up the sqp thread.

Looks good to me - Greg, would you mind queueing this one up?

-- 
Jens Axboe


  reply	other threads:[~2021-07-25 19:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-25  5:07 Olivier Langlois
2021-07-25 19:10 ` Jens Axboe [this message]
2021-07-26  7:42   ` Greg KH

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