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Date: Tue, 9 Feb 2016 13:27:57 -0500
From: Tejun Heo <tj@kernel.org>
To: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Michal Hocko <mhocko@kernel.org>, Jiri Slaby <jslaby@suse.cz>,
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        Daniel Bilik <daniel.bilik@neosystem.cz>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: Crashes with 874bbfe600a6 in 3.18.25
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Hello, Mike.

On Tue, Feb 09, 2016 at 07:02:35PM +0100, Mike Galbraith wrote:
> > It doesn't do anything unless the user twiddles the mask to exclude
> > certain (think no_hz_full) CPUs, so there are no clueless victims.
> 
> (a plus: testers/robots can twiddle mask to help find bugs, _and_
> nohz_full people can use it if they so choose)

Ah, yeah, it makes sense then.  I'm gonna play with a bit and add a
debug option to always force the behavior.

Thanks.

-- 
tejun