linux-kernel - Re: [PATCH v3] io_uring/io-wq: Use set_bit() and test

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Message-Id: <171510945496.45805.5070549169318056486.b4-ty@kernel.dk>
Date: Tue, 07 May 2024 13:17:34 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Pavel Begunkov <asml.silence@...il.com>, 
 Breno Leitao <leitao@...ian.org>
Cc: christophe.jaillet@...adoo.fr, paulmck@...nel.org, 
 io-uring@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] io_uring/io-wq: Use set_bit() and test_bit() at
 worker->flags


On Tue, 07 May 2024 10:00:01 -0700, Breno Leitao wrote:
> Utilize set_bit() and test_bit() on worker->flags within io_uring/io-wq
> to address potential data races.
> 
> The structure io_worker->flags may be accessed through various data
> paths, leading to concurrency issues. When KCSAN is enabled, it reveals
> data races occurring in io_worker_handle_work and
> io_wq_activate_free_worker functions.
> 
> [...]

Applied, thanks!

[1/1] io_uring/io-wq: Use set_bit() and test_bit() at worker->flags
      commit: 8a565304927fbd28c9f028c492b5c1714002cbab

Best regards,
-- 
Jens Axboe