linux-kernel - Re: [syzbot] WARNING in cpuset_write

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Message-ID: <YhUqLxR9o5UGVlTx@slm.duckdns.org>
Date:   Tue, 22 Feb 2022 08:23:43 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Waiman Long <longman@...hat.com>
Cc:     syzbot <syzbot+568dc81cd20b72d4a49f@...kaller.appspotmail.com>,
        cgroups@...r.kernel.org, hannes@...xchg.org,
        linux-kernel@...r.kernel.org, lizefan.x@...edance.com,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in cpuset_write_resmask

On Tue, Feb 22, 2022 at 01:22:13PM -0500, Waiman Long wrote:
> My preliminary analysis is that the warning may be caused by my commit
> 1f1562fcd04a ("cgroup/cpuset: Don't let child cpusets restrict parent in
> default hierarchy") since the merge branch e5313968c41b is missing the fix
> commit d068eebbd482 ("cgroup/cpuset: Make child cpusets restrict parents on
> v1 hierarchy"). I believe the problem should be gone once the merge branch
> is updated to a later upstream baseline.

Fantastic. Thank you so much for taking a look.

-- 
tejun