linux-kernel - Re: [2.6.25-rc2] stack trace immediately before rebooting/switching off

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Message-Id: <20080218050107.ecb1d050.akpm@linux-foundation.org>
Date:	Mon, 18 Feb 2008 05:01:07 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Andrey Borzenkov <arvidjaar@...l.ru>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6.25-rc2] stack trace immediately before rebooting/switching
 off

On Sun, 17 Feb 2008 15:16:53 +0300 Andrey Borzenkov <arvidjaar@...l.ru> wrote:

> In 2.6.25 I get stack trace immediately before system is switched off or
> reboots. It is too fast to capture it on VGA; netconsole does not capture
> it either - probably network is already shutdown at this point. I do
> not have serial port on this system.
> 
> Any idea how could I capture it? Thank you.
> 
> The problem did not exist in 2.6.24 and below. 
> 

- put an mdelay(100000) into sys_reboot() somewhere, take photo of screen

- try plain old /sbin/halt, see if that does it as well.
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