linux-kernel - Re: PROBLEM: NULL pointer dereference in kernel 4.14.6

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Message-ID: <20171219223704.GS3919388@devbig577.frc2.facebook.com>
Date:   Tue, 19 Dec 2017 14:37:04 -0800
From:   Tejun Heo <tj@...nel.org>
To:     George Amanakis <gamanakis@...il.com>
Cc:     linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: PROBLEM: NULL pointer dereference in kernel 4.14.6

Hello,

On Mon, Dec 18, 2017 at 03:17:54PM -0500, George Amanakis wrote:
> I can replicate this on a Thinkpad X230i running archlinux with latest
> 4.14.7 kernel, without the ZFS modules.
> 
> Steps to reproduce:
> 1) create a virtual machine using libvirt (attached xml)
> 2) virsh start vm
> 3) head /sys/fs/cgroup/unified/machine.slice/machine-
> qemu\\x2d2\\x2dvm.scope/cgroup.procs

It took some massaging but I can reproduce the problem.  Will report
when I know more.

Thanks.

-- 
tejun