linux-kernel - Re: [stable] Regression in 2.6.32.2: segfault on halt

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Message-ID: <20091220054847.GF32739@1wt.eu>
Date:	Sun, 20 Dec 2009 06:48:47 +0100
From:	Willy Tarreau <w@....eu>
To:	Holger Hoffstaette <holger.hoffstaette@...glemail.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [stable] Regression in 2.6.32.2: segfault on halt

On Sat, Dec 19, 2009 at 04:10:49PM +0100, Holger Hoffstaette wrote:
> 
> After updating to 2.6.32.2 last night (using same config from .32.1) I
> noticed that "halt" now trips during shutdown and won't power the
> machine down any longer. This happens reproducibly on two completely
> different machines, so it looks like a generic problem and regression,
> since it did not happen in .32.1. Note that "reboot" works as expected -
> only "halt" crashes.

I have it working fine here. So your config helps to reproduce the issue.
Care to post it ?

> Stack dump in two parts (upper/lower half) can be found here:
> http://i.imgur.com/hDY8G.png
> http://i.imgur.com/bSmUN.png

it would have been nice for the readers to enhance the contrast a bit
before posting them.

> The topmost line (not captured) said something like "Illegal opcode 00
> (CPU #0)".
> 
> Let me know if you need anything else. I don't have time for full bisect,
> but am willing to try and back out select changesets as long as someone
> tells me which ones.. :)

Well, there were a number of x86 fixes in this version, maybe you'd like
to revert them as they may be a good common point between two machines ?
I personally find it easier to pick them all from Greg's announcement ;-)

Regards,
Willy

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