Bug#644212: linux-image-2.6.32-5-amd64: kernel BUG at kernel/exit.c:1035: "invalid opcode: 0000"

[Faidon Liambotis <paravoid@debian.org>]

On Tue, Oct 04, 2011 at 03:29:50AM +0100, Ben Hutchings wrote:
> On Tue, 2011-10-04 at 03:51 +0300, Faidon Liambotis wrote:
> > Package: linux-2.6
> > Version: 2.6.32-35
> > Severity: normal
> > 
> > The stack trace can be seen below; if it matters, note that the machine
> > a) is running under KVM, b) has relatively high CPU & I/O load c) it's
> > the first time it has BUGed, although it has been running with 2.6.32
> > since April and with 2.6.32-35 since early August.
> [...]
> 
> Well this is pretty damn weird.  This BUG message means that the
> scheduler reselected a task to run after it exited (i.e. it was a
> zombie).
> 
> I can't find any related bug reports or fixes.  I'm afraid we are
> unlikely to be able to progress this unless it is reproducible.

Yeah, I figured it was weird... I don't think I'll be able to reproduce
this, it wasn't even triggered by user action (the process that crashed
it is a daemon) — and as I said, it's the first time it's being doing
this in quite a while.

If you have any ideas on how to reproduce it or get more info, I'm all
ears :-) The machine is, surprisingly, still up and running although
I'll have to reboot it (just to be safe) soon.

Thanks,
Faidon