linux-kernel - Re: [ 286.547348] BUG: unable to handle kernel paging request at 6b6b6b6b

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Message-ID: <b6a2187b0901070551r5bb86dbfye96c2c92e7b78087@mail.gmail.com>
Date:	Wed, 7 Jan 2009 21:51:13 +0800
From:	"Jeff Chua" <jeff.chua.linux@...il.com>
To:	"Heiko Carstens" <heiko.carstens@...ibm.com>
Cc:	"Pekka Enberg" <penberg@...helsinki.fi>,
	"Justin P. Mattock" <justinmattock@...il.com>,
	linux-kernel@...r.kernel.org,
	"Rusty Russell" <rusty@...tcorp.com.au>
Subject: Re: [ 286.547348] BUG: unable to handle kernel paging request at 6b6b6b6b

On Wed, Jan 7, 2009 at 8:27 PM, Heiko Carstens
<heiko.carstens@...ibm.com> wrote:
> On Wed, Jan 07, 2009 at 07:36:57PM +0800, Jeff Chua wrote:
>> On Wed, Jan 7, 2009 at 5:19 PM, Pekka Enberg <penberg@...helsinki.fi> wrote:
>> > On Wed, 2009-01-07 at 10:15 +0100, Heiko Carstens wrote:
>> >> I missed to convert disable_nonboot_cpus to
>> >> stop_machine_create/destroy.
>> >> So it's a use before-even-allocated bug.
>> >> The patch below should hopefully fix it:
>> >> Subject: [PATCH] cpu hotplug: add stop_machine_create/destroy to disable_nonboot_cpus
>> > Looks good to me!
>>
>> This also fixes the suspend-to-ram/disk problem. Without it, the
>> system will just hang.

> Did you also see the reboot problem and does the patch fix it for you?

I never had problem with rebooting. Just suspend hanging which is
really annoying ... walking away and come back hours later and
realized that the suspend is hanging and having to do a hard boot.

Thanks,
Jeff.
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