From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Christoph Mathys <eraserix@gmail.com>
Cc: Linux RT Users <linux-rt-users@vger.kernel.org>
Subject: Re: [4.1.15-rt17] BUG: unable to handle kernel NULL pointer dereference at 0000000000000001
Date: Thu, 4 Feb 2016 18:16:55 +0100 [thread overview]
Message-ID: <20160204171655.GD3381@linutronix.de> (raw)
In-Reply-To: <CALqGcGpG8ShUjPtuwG8BzToLszLHhyf9ELZkaWE2ziq3TL3YrA@mail.gmail.com>
* Christoph Mathys | 2015-12-23 14:55:08 [+0100]:
>While running my "infamous" tests with containers[0] on 4.1, I get
>system freezes regularly. I have tried with and without PREEMPT_RT.
>The lockups did only occur on RT and when the cgroup "memory" was in
>use. Without rt or this particular cgroup (cgroup_disable kernel
>parameter), my test ran for ~15h before I stopped it manually.
>
>tldr; CONFIG_MEMCG seem to be broken for PREEMPT_RT.
>
>I don't know if the errors below are directly responsible for the
>system freeze, but they are the last thing I see from the system
>before it freezes.
>
>The second dump below might contain some typos because I had to
>convert it manually from a screenshot to text.
The memcg tests from LTP didn't cause any problems. And after about
three hours trying to get lxc to work I gave up.
So I have no idea how to continue here.
>[0] http://www.spinics.net/lists/linux-rt-users/msg14262.html
Sebastian
prev parent reply other threads:[~2016-02-04 17:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-23 13:55 [4.1.15-rt17] BUG: unable to handle kernel NULL pointer dereference at 0000000000000001 Christoph Mathys
2016-02-04 17:16 ` Sebastian Andrzej Siewior [this message]
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