Re: sched: softlockups in multi_cpu_stop

Sasha Levin
2015-03-06T15:47:19Z

On 03/06/2015 09:45 AM, Sasha Levin wrote:
> On 03/06/2015 09:34 AM, Rafael David Tinoco wrote:
>> Are you sure about this ? I have a core dump locked on the same place
>> (state machine for powering cpu down for the task swap) from a 3.13 (+
>> upstream patches) and this commit wasn't backported yet.
>
> bisect took me to that same commit twice, and I'm running a -next with that
> commit reverted and not seeing those hangs anymore.
>
> I also didn't see the hang up until a month or so ago (which matches with that
> commit date), and definitely not back in 3.13.

I just remembered that I was seeing something similar back then, which was fixed:

http://lists.openwall.net/linux-kernel/2014/05/12/725

Thanks,
Sasha