Anyone fancy trying to reproduce a qemu-system-ppc64 bug?

[R P Herrold]

On Mon, 11 Jun 2012, Richard W.M. Jones wrote:

> I'm trying to track down a bug either in our Fedora kernel or in
> (upstream) qemu-system-ppc64.  Occasionally when accessing disk, the
> VM hangs.  qemu sits doing nothing -- it appears to be a case of a
> lost interrupt or event.
>
> Before I try to report this upstream, it'd be helpful if anyone on
> this list could try to reproduce the problem.  It is fairly simple,
> but the test may take hours to run.

> After the VM boots, you should see it in an endless loop creating a
> filesystem and mounting it (inside the VM).
>
> Eventually (maybe after several *hours*) it may hang
>  ==> well done you have reproduced the bug!

Now that I have an instance burning away, is there a preferred 
way to 'kill' the virtual instance, so that you can extract 
'gdb' type information from it? {assuming it locks up for me}

The instance looks like it could support bringing up a network 
connection and SSH server such that I could have a 'guard' 
process attempt to connect to the qemu hostedinstance from 
time to time, and auto-kill it, and then notify me when it 
becomes non-responsive


For folks wanting to play along, I captured your email into 
scripts.  My convenience scripts, summarizing your prior email 
to set up the test case are at:
 	http://gallery.herrold.com/README-rjones
 	http://gallery.herrold.com/README-asroot

-- Russ herrold