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UPSTREAM: io_uring/io-wq: free worker if task_work creation is canceled

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commit af82425c6a2d2f347c79b63ce74fca6dc6be157f upstream.

If we cancel the task_work, the worker will never come into existance.
As this is the last reference to it, ensure that we get it freed
appropriately.

Cc: stable@vger.kernel.org
Reported-by: 진호 <wnwlsgh98@gmail.com>
Change-Id: I7da78f771d0845c98044a1181ea948c2784f1008
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit bb135bcc94)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Jens Axboe
2023-01-02 16:49:46 -07:00
committed by Greg Kroah-Hartman
parent 65e1f2ef67
commit 19758f54f7
1 changed files with 1 additions and 0 deletions
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io_uring/io-wq.c
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@@ -1217,6 +1217,7 @@ static void io_wq_cancel_tw_create(struct io_wq *wq)
worker = container_of(cb, struct io_worker, create_work);
io_worker_cancel_cb(worker);
kfree(worker);
}
}