linux-kernel - Re: [BUG] cgroup lockup while upgrading udev on debian

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Message-ID: <20180122114105.4b66f020@gandalf.local.home>
Date:   Mon, 22 Jan 2018 11:41:05 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Tejun Heo <tj@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Li Zefan <lizefan@...wei.com>, cgroups@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [BUG] cgroup lockup while upgrading udev on debian

On Mon, 22 Jan 2018 08:30:51 -0800
Tejun Heo <tj@...nel.org> wrote:

> It looks like the same bug which was fixed by 74d0833c659a ("cgroup:
> fix css_task_iter crash on CSS_TASK_ITER_PROC").  The bug got
> introduced durinv v4.14 cycle and triggers when cgroup1 and cgroup2
> are used at the same time, which the recent versions of systemd does
> when in cgroup1 mode.
>

Thanks Tejun,

I'll have to upgrade my systems to the lastest stable, before doing any
other upgrades.

-- Steve