From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH v3 3/9] cgroup/cpuset: Fix violation of cpuset locking
 rule
Date: Mon, 26 Jul 2021 13:10:16 -1000
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References: <20210720141834.10624-1-longman@redhat.com>
 <20210720141834.10624-4-longman@redhat.com>
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Sender: Tejun Heo <htejun@gmail.com>
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To: Waiman Long <longman@redhat.com>
Cc: Zefan Li <lizefan.x@bytedance.com>, Johannes Weiner <hannes@cmpxchg.org>, Jonathan Corbet <corbet@lwn.net>, Shuah Khan <shuah@kernel.org>, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>, Roman Gushchin <guro@fb.com>, Phil Auld <pauld@redhat.com>, Peter Zijlstra <peterz@infradead.org>, Juri Lelli <juri.lelli@redhat.com>, Frederic Weisbecker <frederic@kernel.org>, Marcelo Tosatti <mtosatti@redhat.com>, Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny@suse.com>

On Tue, Jul 20, 2021 at 10:18:28AM -0400, Waiman Long wrote:
> The cpuset fields that manage partition root state do not strictly
> follow the cpuset locking rule that update to cpuset has to be done
> with both the callback_lock and cpuset_mutex held. This is now fixed
> by making sure that the locking rule is upheld.
> 
> Fixes: 3881b86128d0 ("cpuset: Add an error state to cpuset.sched.partition")
> Fixes: 4b842da276a8 ("cpuset: Make CPU hotplug work with partition)
> Signed-off-by: Waiman Long <longman@redhat.com>

Applied to cgroup/for-5.15.

Thanks.

-- 
tejun