[ltp] 570 2.6.30 ACPI related kernel panic

[Henrique de Moraes Holschuh]

On Tue, 21 Jul 2009, Simon Williams wrote:
> I run Arch Linux on a ThinkPad 570. A few weeks ago I tried upgrading
> from kernel 2.6.29.[something] to 2.6.30, but had to revert because of
> kernel panics on boot. Today I tried 2.6.31, but found that the problem
> remains. I've done a bit more digging, and found that it works fine if I
> add acpi=off to the kernel boot options. Even with all the ACPI modules
> blacklisted, if I allow acpi to be on, it kernel panics every time.

I very much doubt the ACPI subsytem is regularly tested against such an
ancient deployment as the 570, so the bug could be anywhere.

> Happens 1 second after starting Loading UDev uevents, after Loading
> standard ACPI modules:
> 
> Kernel panic - not syncing: stack-protector: Kernel stack is corrupted
> in: c8cfefd8

Compile the kernel with stack pointers and debug information, and send me
the full log showing the problem and full trace, please.  You may need to
either take a photo shot of the screen, or preferably, use a serial console
to capture the output.

>     thinkpad-acpi: simplify module autoloading

That shouldn't change anything for the 570, the driver will still autoload
on it, just like it used to before the change.  I left the bios ID of the
570 in there since it doesn't have HKEY.

OTOH, thinkpad-acpi has *no* regular testing on HKEY-less systems like the
570, so that could well be a bug in thinkpad-acpi.  Compile a kernel WITHOUT
thinkpad-acpi, and see if it boots...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh