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Date: Wed, 19 Aug 2009 21:47:00 +0800
Message-ID: <a8e1da0908190647k54cce424m560016ffeec04412@mail.gmail.com>
Subject: Re: -mm hang while shutdown with printk_delay
From: Dave Young <hidave.darkstar@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Tue, Aug 18, 2009 at 12:12 PM, Dave Young<hidave.darkstar@gmail.com> wrote:
> On Tue, Aug 18, 2009 at 11:30 AM, Andrew
> Morton<akpm@linux-foundation.org> wrote:
>> On Tue, 18 Aug 2009 11:25:22 +0800 Dave Young <hidave.darkstar@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> Test with printk_delay=200,
>>>
>>> /sbin/halt -p
>>>
>>> kernel hang after following message:
>>>
>>> Disabling non-boot CPUs
>>>
>>> There's no such problem with 2.6.31-rc6
>>
>> umm, OK.  But -mm contains six patches:
>>
>> printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec.patch
>> printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix.patch
>> printk-boot_delay-rename-printk_delay_msec-to-loops_per_msec-fix-2.patch
>> printk-add-printk_delay-to-make-messages-readable-for-some-scenarios.patch
>> printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-fix.patch
>> printk-add-printk_delay-to-make-messages-readable-for-some-scenarios-cleanup.patch
>>
>> from yourself.  Are they the cause?
>>
>
> Actually I tested 2.6.31-rc6 with the above six patches applied,
> there's no such problem.
>

I'm manually bisecting the mm patch series, hope find cause.

> --
> Regards
> dave
>



-- 
Regards
dave