Bug#516209: kernel bug: kpowernow_k8/kondemand

[Jonathan Nieder <jrnieder@gmail.com>]

tags 516209 + moreinfo
retitle 516209 linux-2.6/lenny: spontaneous crashes, BUG in :powernow_k8:powernowk8_target
quit

Hi David,

Sorry for the long silence.

David Hopfmueller wrote:

> After installing Lenny as well after upgrading from Etch the system
> spontanously crashes. May correlate with this kernel bug, although this bug
> also seems to occur without crashing the system. Anyway, using option
> acpi=off the system is stable (so far).

That's worrying.  Basic questions:

 - do I understand correctly that this is reproducible when using a
   normal workload for a short time in lenny and never occured in etch?

 - have you tried a kernel from squeeze or sid?  If so, was the behavior
   any different?

 - where a BUG appears in the kernel logs, is the backtrace always the
   same?

 - how have you been coping all this time? :)  Have you been using the
   lenny kernel with acpi disabled?  If so, has that been working ok?

 - could you attach the full output of "dmesg" soon after booting (or
   lacking that, kernel output from /var/log/kern.log* from the start
   of a boot with the failing kernel)?  That would tell us something
   about the hardware and how the kernel understands it.

Thanks for reporting, and sorry to have taken so long to get to this.

Regards,
Jonathan