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From: Muchun Song <songmuchun@bytedance.com>
To: axboe@kernel.dk, viro@zeniv.linux.org.uk
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	Muchun Song <songmuchun@bytedance.com>
Subject: [PATCH 0/3] io_uring: Fix async workqueue is not canceled on some corner case
Date: Tue, 15 Sep 2020 16:15:48 +0800	[thread overview]
Message-ID: <20200915081551.12140-1-songmuchun@bytedance.com> (raw)

We should make sure that async workqueue is canceled on exit, but on
some corner case, we found that the async workqueue is not canceled
on exit in the linux-5.4. So we started an in-depth investigation.
Fortunately, we finally found the problem. The commit:

  1c4404efcf2c ("io_uring: make sure async workqueue is canceled on exit")

did not completely solve this problem. This patch series to solve this
problem completely. And there's no upstream variant of this commit, so
this patch series is just fix the linux-5.4.y stable branch.

Muchun Song (2):
  io_uring: Fix missing smp_mb() in io_cancel_async_work()
  io_uring: Fix remove irrelevant req from the task_list

Yinyin Zhu (1):
  io_uring: Fix resource leaking when kill the process

 fs/io_uring.c | 45 +++++++++++++++++++++++++++++----------------
 1 file changed, 29 insertions(+), 16 deletions(-)

-- 
2.11.0


             reply	other threads:[~2020-09-15  8:24 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-15  8:15 Muchun Song [this message]
2020-09-15  8:15 ` [PATCH 1/3] io_uring: Fix resource leaking when kill the process Muchun Song
2020-09-15  8:15 ` [PATCH 2/3] io_uring: Fix missing smp_mb() in io_cancel_async_work() Muchun Song
2020-09-15  8:15 ` [PATCH 3/3] io_uring: Fix remove irrelevant req from the task_list Muchun Song
2020-09-15  9:44 ` [PATCH 0/3] io_uring: Fix async workqueue is not canceled on some corner case Greg KH

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