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SubjectRe: occasional kernel hang on shutdown - kernel/cgroup_pids.c
[CCing Tejun]

Seems to be the same issue as reported here?
http://lkml.kernel.org/r/20151208145851.GJ9837@bark

On Tue 08-12-15 08:53:52, Norbert Preining wrote:
> Dear all
>
> (please Cc)
>
> running 4.4-rc4 (written as rc3+ but only the tag commit is missing),
> but I think also earlier in the rc releases, I occasionally see hangs
> on shutdown. Nothing works anymore, but this time at least there
> was some output on the console.
>
> Manually copied from screen:
>
> WARNING: CPU: 1 PID: 14 at kernel/cgroup_pids.c:97 pids_cancel.constrprop.8+0x2a
> Modules linked in: ....
> ...
> CPU: 1 PID: 14 Comm: ksoftirqd/1 Tainted: G O 4.4.0-rc3+
> Hardware name: Sony Corporation SVP1322A1J/VAIO, BIOS R2092V7 04/24/2015
> ...
>
> Does that help in any way?
>
> All the best
>
> Norbert
>
> (please Cc)
>
> ------------------------------------------------------------------------
> PREINING, Norbert http://www.preining.info
> JAIST, Japan TeX Live & Debian Developer
> GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13
> ------------------------------------------------------------------------
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--
Michal Hocko
SUSE Labs


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