linux-kernel - [RFC PATCH 0/2] workqueue: Fix hotplug races

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Message-Id: <20211130000612.591368-1-frederic@kernel.org>
Date:   Tue, 30 Nov 2021 01:06:10 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Tejun Heo <tj@...nel.org>, Lai Jiangshan <jiangshanlai@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: [RFC PATCH 0/2] workqueue: Fix hotplug races

While triggering rcutorture splats, I couldn't trace down to the exact
cause due to the issue being tracing-unfriendly. But looking at the code,
those two potential races look like plausible causes and also after
these two patches, I couldn't reproduce the rcutorture issues again (yet...).

Frederic Weisbecker (2):
  workqueue: Fix unbind_workers() VS wq_worker_running() race
  workqueue: Fix unbind_workers() VS wq_worker_sleeping() race

 kernel/workqueue.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

-- 
2.25.1