linux-kernel - Re: cpufreq_stats NULL deref on second system suspend

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Message-ID: <5230B078.3070306@linux.vnet.ibm.com>
Date:	Wed, 11 Sep 2013 23:33:36 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	cpufreq <cpufreq@...r.kernel.org>
Subject: Re: cpufreq_stats NULL deref on second system suspend

On 09/11/2013 09:35 PM, Stephen Warren wrote:
> On 09/11/2013 04:21 AM, Srivatsa S. Bhat wrote:
>> On 09/11/2013 04:04 AM, Rafael J. Wysocki wrote:
>>> On Tuesday, September 10, 2013 02:53:01 PM Stephen Warren wrote:
>>>> On 09/09/2013 05:14 PM, Rafael J. Wysocki wrote:
>>>>> On Monday, September 09, 2013 03:29:06 PM Stephen Warren wrote:
>>>>>> On 09/09/2013 02:24 PM, Rafael J. Wysocki wrote:
>>>>>>> On Monday, September 09, 2013 02:01:32 PM Stephen Warren wrote:
>>>>>>>> On 09/09/2013 02:01 PM, Rafael J. Wysocki wrote:
>>>>>>>>> On Monday, September 09, 2013 01:22:23 PM Stephen Warren wrote:
>>>>>>>>>> Viresh,
>>>>>>>>>>
>>>>>>>>>> I'm seeing the crash below when suspending my system for the second time.
> ...
>> Stephen, I went through the code and I think I found out what is going wrong.
>> Can you please try the following patch?
> 
> Unfortunately, I still see the exact same failure/backtrace with this
> patch applied.
> 

Oh, is it? Can you please give me the map of the related cpus on your
system? (ie., cat /sys/devices/system/cpu/cpu*/cpufreq/related_cpus for
each CPU.)

I must be missing something...
 
Regards,
Srivatsa S. Bhat

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