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

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Message-ID:  <pan.2009.12.19.15.10.48.851500@googlemail.com>
Date:	Sat, 19 Dec 2009 16:10:49 +0100
From:	"Holger Hoffstaette" <holger.hoffstaette@...glemail.com>
To:	linux-kernel@...r.kernel.org
Subject:  [stable] Regression in 2.6.32.2: segfault on halt

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.

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

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.. :)

Holger

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