linux-kernel - Re: edac_core: crashes on shutdown

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Message-ID: <20101201143329.GB18074@a1.tnic>
Date:	Wed, 1 Dec 2010 15:33:29 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Tobias Karnat <tobias.karnat@...glemail.com>
Cc:	linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: edac_core: crashes on shutdown

On Wed, Dec 01, 2010 at 02:24:48PM +0100, Tobias Karnat wrote:
> > What does that mean? Are you using an official kernel version or
> > something you cooked up?
> 
> I'm using the official 2.6.36.1 kernel.
> The problem happens with the modules from the kernel 2.6.36.1
> 
> But as a workaround for now,
> I'm using the edac modules from 2.6.35 compiled for 2.6.36.1
> I'm just saying that the problem only occurs on kernel >= 2.6.36

Hmm, I can't reproduce it here.

> > Please try to catch the whole oops. I can see rIP but it'd be much more
> > helpful to see the calltrace and the whole register dump which are cut
> > off at the bottom of your pic.
> 
> Yes, here you go:
> 
> http://i55.tinypic.com/igyhpt.jpg

Unfortunately, this is still incomplete because it is missing the Code: tag and
the end trace tag which looks like this

---[ end trace ... ]---

and this is most probably so because we're halting and cannot print out
all the oops. Two things you can do:

1. Connect the machine to another machine over serial- or netconsole.
Google for instructions how.

2. If you can't do 1. you can try enabling CONFIG_BOOT_PRINTK_DELAY and
boot the kernel with 'boot_delay=10', for example, so that a 10ms delay
is inserted after each printk line. This might let us see more on the
console before halt and catch the whole oops.

Thanks.

-- 
Regards/Gruss,
Boris.
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