[stable] Regression in 2.6.32.2: segfault on halt

[Holger Hoffstaette]

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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