Subject: Re: Oops while running systemtap on the p6 machine against the kernel version 2.6.36-rc7-git3

From: [email-masked] (Frank Ch. Eigler)
Date: Wed, 03 Nov 2010 08:49:39 -0400

divya <[email-masked]> writes:

> While running systemtap tests on the p6 machine , against the kernel version 2.6.36-rc7-git3
> Oops occured , here are the call trace
>
>  BUG: spinlock bad magic on CPU#6, stapio/20398
> -- 0:conmux-control -- time-stamp -- Oct/13/10  2:49:18 --res
>  lock: c000000000fcfa18, .magic: 00000000, .owner:<none>/-1, .owner_cpu: 0
> [...]

jistone committed some timing-related changes last night.  Would you
mind trying a new build on your ppc box?

It seems as through there is a concurrency problem with the timer
shutdown process.  If the problem still occurs, we might need to
instrument that part of the kernel and/or runtime code to figure it
out.

- FChE