On Wed, Dec 22, 2010 at 10:02 AM, Peter Lieven <p...@dlh.net> wrote:
> If I start a VM with the following parameters
> qemu-kvm-0.13.0 -m 2048 -smp 2 -monitor tcp:0:4014,server,nowait -vnc :14 
> -name 'ubuntu.test'  -boot order=dc,menu=off  -cdrom 
> ubuntu-10.04.1-desktop-amd64.iso -k de
>
> and select memtest in the Ubuntu CD Boot Menu, the VM immediately resets. 
> After this reset there happen several errors including graphic corruption or 
> the qemu-kvm binary
> aborting with error 134.
>
> Exactly the same scenario on the same machine with qemu-kvm-0.12.5 works 
> flawlessly.
>
> Any ideas?

You could track down the commit which broke this using git-bisect(1).
The steps are:

$ git bisect start v0.13.0 v0.12.5

Then:

$ ./configure [...] && make
$ x86_64-softmmu/qemu-system-x86_64 -m 2048 -smp 2 -monitor
tcp:0:4014,server,nowait -vnc :14 -name 'ubuntu.test'  -boot
order=dc,menu=off  -cdrom ubuntu-10.04.1-desktop-amd64.iso -k de

If memtest runs as expected:
$ git bisect good
otherwise:
$ git bisect bad

Keep repeating this and you should end up at the commit that introduced the bug.

Stefan
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