Re: NULL pointer dereference in cgroup

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: NULL pointer dereference in cgroup
Date	2017-03-13 18:10 +0100
Message-ID	<tkBDR-3Ed-19@gated-at.bofh.it> (permalink)
References	<tiPKV-2DT-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hello,

On Wed, Mar 08, 2017 at 06:46:16PM +0000, Luis Henriques wrote:
> Hi,
> 
> I've seen this only once, and can't reproduce it.  But here it is anyway:
> 
> https://postimg.org/image/pn94k1yov
> 
> (Not sure png files are accepted on LKML.)
> 
> This occurred in a VM while booting 4.11.0-rc1

It was trying to migrate a process and encountered a NULL deref while
trying to find the destination css_set.  Unfortunately, it's difficult
to tell what went wrong with just the posted backtrace.  If you built
the kernel with debuginfo, the output of addr2line could help quite a
bit.

Thanks.

-- 
tejun

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NULL pointer dereference in cgroup Luis Henriques <henrix@camandro.org> - 2017-03-08 20:50 +0100
  Re: NULL pointer dereference in cgroup ebiederm@xmission.com (Eric W. Biederman) - 2017-03-09 00:40 +0100
    Re: NULL pointer dereference in cgroup Luis Henriques <henrix@camandro.org> - 2017-03-09 10:10 +0100
  Re: NULL pointer dereference in cgroup Tejun Heo <tj@kernel.org> - 2017-03-13 18:10 +0100

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