linux-kernel - Re: [BUG] Kernel splat when taking CPUs offline

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Message-ID: <20150709045714.GH1805@linux>
Date:	Thu, 9 Jul 2015 10:27:14 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Saravana Kannan <skannan@...eaurora.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [BUG] Kernel splat when taking CPUs offline

On 09-07-15, 00:25, Steven Rostedt wrote:
> On Thu, 9 Jul 2015 09:34:45 +0530
> Viresh Kumar <viresh.kumar@...aro.org> wrote:
> 
> 
> > I think it might be related to what I chased down yesterday:
> > 
> > http://marc.info/?l=linux-kernel&m=143633485824975&w=2
> > 
> > @Steven: Can you please give this a try ?
> > 
> 
> Yes that seems to fix my issue as well.
> 
> Tested-by: Steven Rostedt <rostedt@...dmis.org>

Awesome, so the problem was that cpufreq_set_policy() was failing
because of the latest bug I planted :), and that caused ->exit() but
didn't free the policy completely. (I have fixed that as well in a
separate patch).

And so you are hitting a policy which has already exited. Sorry about
that :)

-- 
viresh
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