From: Jens Axboe <axboe@kernel.dk>
To: Pavel Begunkov <asml.silence@gmail.com>, io-uring@vger.kernel.org
Subject: Re: [PATCH 5.8] io_uring: fix missing ->mm on exit
Date: Mon, 24 Aug 2020 14:44:17 -0600 [thread overview]
Message-ID: <56724eaf-d143-82c8-31e1-4b5d4d29fe9b@kernel.dk> (raw)
In-Reply-To: <392dc86b-52ac-1ca4-d942-51261d1f7a9f@gmail.com>
On 8/24/20 2:40 PM, Pavel Begunkov wrote:
> On 24/08/2020 23:35, Pavel Begunkov wrote:
>> do_exit() first drops current->mm and then runs task_work, from where
>> io_sq_thread_acquire_mm() would try to set mm for a user dying process.
>
> This is a backport of [1] + [2] for 5.8. Let's wait to see if
> Roman Gershman can test it.
>
> [1] 8eb06d7e8dd85 ("io_uring: fix missing ->mm on exit")
> [2] cbcf72148da4a ("io_uring: return locked and pinned page accounting")
Yes, would be great if we could test. And provide an email, too :-)
Once that's settled, I'll shove this to 5.8-stable.
--
Jens Axboe
prev parent reply other threads:[~2020-08-24 20:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 20:35 [PATCH 5.8] io_uring: fix missing ->mm on exit Pavel Begunkov
2020-08-24 20:40 ` Pavel Begunkov
2020-08-24 20:44 ` Jens Axboe [this message]
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