Re: KVM segfaults with 3.5 while installing ubuntu 12.04

[Stefan Priebe - Profihost AG]

Hi,

ok i found a faster way to trigger this. Just boot the ubuntu rescue system.

So here are 3 backtraces from booting the rescue system:
http://pastebin.com/raw.php?i=xCy2pEcP

To me they all look the same.

Thanks!

Stefan

Am 01.08.2012 10:44, schrieb Avi Kivity:
> On 07/31/2012 08:37 PM, Stefan Priebe wrote:
> > Now i got it working - sorry used old gdb.
> >
> > This is the backtrace:
> >
> > Core was generated by `/usr/bin/qemu-system-x86_64 -id 103 -chardev
> > socket,id=qmp,path=/var/run/qemu-s'.
> > Program terminated with signal 11, Segmentation fault.
> > #0  0x00007f6ca10faed8 in ?? () from /lib/libc.so.6
> > (gdb) where
> > #0  0x00007f6ca10faed8 in ?? () from /lib/libc.so.6
> > #1  0x00007f6ca54e0098 in virtio_notify_vector (vdev=0x7f6ca10fae98,
> > vector=32620)
> >      at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio.c:493
> > #2  0x00007f6ca54e0e25 in virtio_notify (vdev=0x7f6ca10fae98,
> > vq=0x7f6ca10faf18) at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio.c:739
> > #3  0x00007f6ca54d5bb0 in virtio_blk_req_complete (req=0x7f6ca6fe4440,
> > status=0)
>
> I notice the ip is different from the first trace. Please run this a few
> more times and see if it always fails in the same place, or in random
> places (and post the traces please).
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