linux-kernel - Re: Strange reboots on 2.6.29-rc6-wl

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Message-ID: <20090317145753.GA1651@silver.sucs.org>
Date:	Tue, 17 Mar 2009 14:57:53 +0000
From:	Sitsofe Wheeler <sitsofe@...oo.com>
To:	Nico -telmich- Schottelius 
	<nico-linux-ipw3945-devel@...ottelius.org>,
	"John W. Linville" <linville@...driver.com>,
	Nico Schottelius <nico-linux-20090313@...ottelius.org>,
	LKML <linux-kernel@...r.kernel.org>,
	ipw3945-devel@...ts.sourceforge.net
Subject: Re: Strange reboots on 2.6.29-rc6-wl

On Tue, Mar 17, 2009 at 08:54:24AM +0100, Nico -telmich- Schottelius wrote:
> 
> Has anyone a clue on howto debug the build environment or
> debugging the kernel before it's getting booted?

If you have a serial console you can probably get output on that. If you
have flipped EMBEDDED to Y then you might also have to enable
EARLY_PRINTK. Another trick might be to turn set
BOOT_PRINTK_DELAY (Kernel hacking -> Delay each boot printk message by N
milliseconds) to something like 2000 and see if you can read/catch the
messages before the kernel reboots...

Failing that start a git bisection (
http://www.kernel.org/doc/local/git-quick.html#bisect or
http://www.stardust.webpages.pl/files/handbook/handbook-en-0.3-rc1.pdf )
from the last good kernel...

-- 
Sitsofe | http://sucs.org/~sits/
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