Re: 2.6.30-rc2 soft lockups: ACPI? clock source problem?

[Len Brown <lenb@kernel.org>]

On Thu, 23 Apr 2009, Dave Hansen wrote:

> On Thu, 2009-04-23 at 12:10 -0700, john stultz wrote:
> > On Thu, 2009-04-23 at 11:31 -0700, Dave Hansen wrote:
> > > On Wed, 2009-04-22 at 20:45 -0700, Andrew Morton wrote:
> > > > (Is jstultz@us.ibm.com correct?)
> > > 
> > > Only I want it to go to the black hole which is Lotus Notes. :)
> > > 
> > > > On Tue, 21 Apr 2009 10:30:38 -0700 Dave Hansen <dave@sr71.net> wrote:
> > > > > This was during my first boot of 2.6.30-rc2.
> > > > 
> > > > Did it ever happen again?
> > > 
> > > I've seen it on three different boots, but the stack traces were a bit
> > > different each time.  So, I assume it is a true timekeeping thing
> > > instead of something *actually* locking up.
> > > 
> > > > I assume this is a post-2.6.29 regression?  (Yet another.  We've been
> > > > extra bad this time)
> > > 
> > > This laptop has been quite good to me and I haven't rebooted since the
> > > late 2.6.28 days.  It isn't anything special, though.  Just a Lenovo
> > > T61.  I wonder if my .config is a bit different.
> > 
> > I've got a T61 at home, so I'll try to test it out. Dave, can you send
> > me your .config? Also any chance you can bisect this down a tiny bit?
> 
> http://sr71.net/~dave/linux/config-forjohn-04-23-2009

ugh, my 64-bit T61 will not like this 32-bit config:-(

> I'll work on bisecting it down in a bit.

start by trying the various clocksource= cmdline options.

also, as -rc3 is out, please verify that still fails before bisecting -rc2

thanks,
Len Brown, Intel Open Source Technology Center