Re: [OOPS] BUG_ON in cgroups on 4.4.0-rc5-next

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From	"tj@kernel.org" <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [OOPS] BUG_ON in cgroups on 4.4.0-rc5-next
Date	Wed, 23 Dec 2015 18:00:02 +0100
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Hello, Alex.

On Tue, Dec 22, 2015 at 07:06:41PM +0000, Alex Ng (LIS) wrote:
> > Can you please let me know the steps to reproduce the bug?
> 
> I tried this on a Hyper-V VM hosted in Windows Server 2012R2 and ran
> the attached script.  The script clones the linux-next tree in a
> random directory under /tmp in a tight loop.
>
> This panic is not always reproducible, and I have only hit it once
> after running the script about 10 times. A different kernel panic
> happens each time I run this script; and the panics always happen
> during the first iteration of the loop.

Heh, I don't get it.  The script doesn't do anything cgroup specific.
Can you please apply the attached patch, reproduce the issue and
report the kernel log?

Thanks.

-- 
tejun

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[OOPS] BUG_ON in cgroups on 4.4.0-rc5-next "Alex Ng (LIS)" <alexng@microsoft.com> - 2015-12-18 21:10 +0100
  Re: [OOPS] BUG_ON in cgroups on 4.4.0-rc5-next "tj@kernel.org" <tj@kernel.org> - 2015-12-21 23:00 +0100
    RE: [OOPS] BUG_ON in cgroups on 4.4.0-rc5-next "Alex Ng (LIS)" <alexng@microsoft.com> - 2015-12-22 21:50 +0100
      Re: [OOPS] BUG_ON in cgroups on 4.4.0-rc5-next "tj@kernel.org" <tj@kernel.org> - 2015-12-23 18:00 +0100

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