Regression: Fixing recursive fault but reboot is needed at boot on HP 6730B

[Roberto Oppedisano <roberto.oppedisano@gmail.com>]

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Hello
     I'm observing this kind of boot failure when my laptop
is not docked; I didn't notice before because I seldom reboot
it when it's not connected to a docking station.

The failure is reproducible at 80-90%, meaning that one boot
over 8-10 will complete also with the laptop undocked; it seems
that being attached to a power supply (via jack, not docking) or
on batteries makes no difference WRT this failure.
Here:

http://62.196.71.254/kernel/

I've uploaded 3 png files containing a shoot of the error (the
3 shoot, taken via a video camera, don't capture all of the
boot output; I'll try to setup a serial console if needed).

The bug is not reproducible on ubuntu kernel 3.5.0-25.39 and
I think it was not there in 3.6.11-stable.

It is present on a post 3.8 kernel (i did compile from Linus
master tree about ten days ago) and is present on current git:

Linux poppero4 3.9.0-rc2 #18 SMP PREEMPT Mon Mar 11 07:05:52 CET 2013 
x86_64 x86_64 x86_64 GNU/Linux

Attached dmesg and config.

Let me know if you need more info.

Kind regards
R


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