linux-kernel - Re: WARNING: CPU: 0 PID: 1935 at kernel/timer.c:1621 migrate_timer

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Date:	Sat, 05 Apr 2014 15:18:01 +0800
From:	Jet Chen <jet.chen@...el.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	"Wu, Fengguang" <fengguang.wu@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: WARNING: CPU: 0 PID: 1935 at kernel/timer.c:1621 migrate_timer_list()

On 04/05/2014 02:26 PM, Viresh Kumar wrote:
> On 5 April 2014 10:00, Jet Chen <jet.chen@...el.com> wrote:
>> vmlinuz from our build system doesn't have debug information. It is hard to
>> use objdump to identify which routine is timer->function.
>
> I see...
>
>> But after several times trials, I get below dmesg messages.
>> It is clear to see address of "timer->function" is 0xffffffff810d7010.
>> In calling stack, " [<ffffffff810d7010>] ?
>> clocksource_watchdog_kthread+0x40/0x40 ". So I guess timer->function is
>> clocksource_watchdog_kthread.
>
> Hmm.. not exactly this function as this isn't timer->function for any timer.
> But I think I have found the right function with this hint:
> clocksource_watchdog()
>
> Can you please try to test the attached patch, which must fix it.

Your patch fixes it!

> Untested. I will
> then post it with your Tested-by :)

Thank you

>
> --
> viresh
>


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