Bug#648766: [sparc] BUG: NMI Watchdog detected LOCKUP on CPU0

[Kieron Gillespie <ciaran.gillespie@gmail.com>]

I have also noticed, that if I am reading the trace correctly that in 
both of my cases, and the original bug submitter's, and a bug posted on 
old.nabble.com's case the crash always seems to happen when one CPU is 
doing cheetah_xcall_deliver, and the other CPU is in the same 
instruction in tl0_irq15. Here is a link to the post.

http://old.nabble.com/Ext4-stable-yet--p31660435.html

Though this person thinks it has to do with ext4 stability issues. I can 
rule this out completely because my system does not have a single ext4 
file system on it.

On 04/03/2012 01:29 PM, Jonathan Nieder wrote:
> Kieron Gillespie wrote:
>
> > Here are the dmesg output from the current system running Linux
> > 3.2.13 with SMP enabled with tickless disabled.
> Great.
>
> Is this reproducible without nouveau?   It might be possible to test
> by putting
>
> 	blacklist nouveau
>
> in /etc/modprobe.d/kg-disable-nouveau.conf and booting in "recovery
> mode" so X doesn't get started.  That might mean it continues to
> access the console using the PROM or it might mean there is no
> console output at all and one has to operate "blind" or using ssh;
> please forgive my ignorance.
>
> Thanks,
> Jonathan