BUG: soft lockup - CPU#0 stuck for 29s! [X:811] (70 lines?)

[Josh Boyer]

On Thu, Feb 23, 2012 at 01:03:07PM +0000, Frank Murphy wrote:
> Can someone point me to the correct kernel component for bz.
> Abrt added me to: https://bugzilla.redhat.com/show_bug.cgi?id=713687
> 
> But that seems to be completly different.

There was a request to have abrt ignore any part of the stack trace that
started with '?' because those are guestimations by the kernel.  Before
abrt started ignoring those, it would take almost identical stack traces
and hash them differently, which was leading to a lot of duplicates.

My guess here is that because _all_ of your stack entries start with
'?', abrt didn't work quite as expected.

As for the problem itself, soft lockups inside of virtual guests seem to
be somewhat of a norm these days.  There is work on-going to get the
host and the KVM guest talk to each other in this regard.  See bug

https://bugzilla.redhat.com/show_bug.cgi?id=794478

josh