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From:   "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
Date:   Wed, 21 Feb 2018 08:45:21 +0100
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Subject: Re: A "domain invalid" cgroup *can* sometimes have member tasks
To:     Tejun Heo <tj@kernel.org>
Cc:     "Serge E. Hallyn" <serge@hallyn.com>,
        lkml <linux-kernel@vger.kernel.org>,
        "open list:CONTROL GROUP (CGROUP)" <cgroups@vger.kernel.org>
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Hi Tehjun,

On 21 February 2018 at 00:01, Tejun Heo <tj@kernel.org> wrote:
> On Tue, Feb 20, 2018 at 11:35:47AM -0800, Tejun Heo wrote:
>> Hmm... nr_populated_domain_children check should have caught that
>> condition and rejected it.  Will look into what's going on.
>
> Ah, okay, I was special-casing the first level children case too
> early.  If you nest the test case by one more level, it fails as
> intended.  I'll fix the checks.

Thanks for looking into this so quickly! Please CC me on the patch.

Cheers,

Michael

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/