linux-kernel - Re: 2.6.22-git17 boot failure

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Message-ID: <46A504A3.3070205@imap.cc>
Date:	Mon, 23 Jul 2007 21:42:27 +0200
From:	Tilman Schmidt <tilman@...p.cc>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	LKML <linux-kernel@...r.kernel.org>, andi@...stfloor.org,
	nix.or.die@...glemail.com
Subject: Re: 2.6.22-git17 boot failure

Am 23.07.2007 16:51 schrieb Jeremy Fitzhardinge:
> Tilman Schmidt wrote:
>> Attached are .config and dmesg (as captured in SuSE's /var/log/boot.msg)
>> of a CONFIG_XEN=n git-current build. 
> 
> That's dmesg from a successful boot?

Yes.

>  What does it look like when its
> unsuccessful?  Where do they start to differ?

To answer that, I have reproduced the effect with kernel 2.6.23-rc1 with
netconsole compiled in. I'm attaching both captures, for CONFIG_XEN=y
(unsuccessful) as well CONFIG_XEN=n (successful).

The first noticeable difference is that the nonzero timestamps starting
after the line "Detected 3197.059 MHz processor" are much bigger with XEN -
but perhaps that's expected.

More to the point, everything from:

  SCSI subsystem initialized

on is completely missing, including all the [S/P]ATA, SCSI, parport, AGP,
USB, Firewire, RTC and of course ext3 messages. Only the "device-mapper"
line still appears.

Btw, the NULL pointer BUG at the end of the successful boot is new with
2.6.23-rc1. I'll report that separately but didn't want to edit anything.

HTH
T.

-- 
Tilman Schmidt                          E-Mail: tilman@...p.cc
Bonn, Germany
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