Re: [Qemu-devel] QEMU 2.0 RC with Spice

[Richard Vernam]

On Apr 16, 2014 3:07 AM, "Dr. David Alan Gilbert" <address@hidden> wrote:
>
> * Rick Vernam (address@hidden) wrote:
> > On Tuesday 15 April 2014 19:25:22 Rick Vernam wrote:
> > > Looks like it's in Spice:
>
> <snip old backtrace without symbols>
>
> > > I'll see if I can build spice with debugging symbols and what not and write
> > > back with findings. Are others have problems with Qemu 2.0 RCs & Spice?
> > >
> > > Here is how I started qemu with gdb:
> > >
> > > QEMU_AUDIO_DRV=spice
> > > TMPDIR=/home/rick/qemu/hds gdb --args /usr/local/bin/qemu-system-x86_64 -cpu
> > > host -enable-kvm \ -m 1536 -name Win7Pro64 -localtime -no-fd-bootchk -smp
> > > cores=4 \
> > > -pidfile /home/rick/qemu/hds/win7pro64.pid \
> > > -drive file=/home/rick/qemu/hds/win7pro64.qed,if=virtio,index=0,snapshot=on
> > > \ -vga qxl \
> > > -net nic,model=virtio -net user \
> > > -device virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.0,addr=0x5
> > > \ -chardev spicevmc,name=vdagent,id=vdagent \
> > > -device
> > > virtserialport,nr=1,bus=virtio-serial0.0,chardev=vdagent,name=com.redhat.sp
> > > ice.0 \ -spice port=1247,disable-ticketing \
> > > -monitor telnet:localhost:12471,server,nowait \
> > > -drive if=none,id=cd,file=/dev/sg1 \
> > > -device virtio-scsi-pci,id=scsi \
> > > -device scsi-generic,drive=cd \
> > > -balloon virtio \
> > > -soundhw hda \
> > > -device usb-ehci
> > >
> > >
> > > Thanks,
> > > -Rick
> > >
> > > On Tuesday 15 April 2014 15:22:04 Dr. David Alan Gilbert wrote:
> > > > * Rick Vernam (address@hidden) wrote:
> > > > > I have been trying out the 2.0 RCs, and I've noticed that when I use
> > > > > spice
> > > > > qemu aborts when I reboot the VM.  This occurs on Win XP guest, Win 7
> > > > > (64-bit) guest and Win 8 (64-bit) guest.
> > > > > Is this something that anybody else experiences?
> > > > > I don't care to divert anybody's energy if this a spice thing - how best
> > > > > to
> > > > > determine this?
> > > >
> > > > You say qemu aborts; can you get a backtrace and the abort message?
> > > >
> > > > Dave
> > > > --
> > > > Dr. David Alan Gilbert / address@hidden / Manchester, UK
> >
> > sorry, for top posting my last response.  and also sorry for not noticing that I had let the binaries get stripped previously.
> > Here with qemu-system-x86_64 not stripped, and spice lib not stripped:
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x00007ffff211eae5 in spice_char_device_write_to_device (dev=0x55555687bcf0) at char_device.c:443
> > 443         sif = SPICE_CONTAINEROF(dev->sin->base.sif, SpiceCharDeviceInterface, base);
> > (gdb) bt
> > #0  0x00007ffff211eae5 in spice_char_device_write_to_device (dev=0x55555687bcf0) at char_device.c:443
> > #1  0x00007ffff211fd81 in spice_char_device_start (dev=0x55555687bcf0) at char_device.c:798
> > #2  0x00007ffff2171f95 in spice_server_vm_start (s=0x5555561d4360) at reds.c:4520
> > #3  0x00005555556a1119 in qdev_reset_one (dev=<optimized out>, opaque=<optimized out>) at hw/core/qdev.c:240
> > #4  0x00005555556a0958 in qbus_walk_children (bus=0x5555567576a0, pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x5555556a1100 <qdev_reset_one>, post_busfn=0x55555569f060 <qbus_reset_one>, opaque=0x0) at hw/core/qdev.c:369
> > #5  0x00005555556a0878 in qdev_walk_children (dev=0x55555677c0b0, pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x5555556a1100 <qdev_reset_one>, post_busfn=0x55555569f060 <qbus_reset_one>, opaque=0x0) at hw/core/qdev.c:403
> > #6  0x00005555556a0958 in qbus_walk_children (bus=0x5555567459c0, pre_devfn=0x0, pre_busfn=0x0, post_devfn=0x5555556a1100 <qdev_reset_one>, post_busfn=0x55555569f060 <qbus_reset_one>, opaque=0x0) at hw/core/qdev.c:369
> > #7  0x00005555557d717a in qemu_devices_reset () at vl.c:1867
> > #8  qemu_system_reset (address@hidden) at vl.c:1880
> > #9  0x00005555555f9e2f in main_loop_should_exit () at vl.c:2015
> > #10 main_loop () at vl.c:2055
> > #11 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4507
> >
> >
> > Thanks, and what can I do to provide more info?
>
> I don't know much about spice; I've added address@hidden to cc who knows spice.
>
> Can you clarify a bit more about which spice version you're using and anything else
> about your setup that might be relevant.
>
> Dave
> --
> Dr. David Alan Gilbert / address@hidden / Manchester, UK

Spice is 0.12.4 via Gentoo, which makes me wonder if gentoo is applying any patches over vanilla spice.  If they are, I'll grab vanilla spice.

This happens during reboot, seemingly right at the transition between shutting down and starting back up; and so I wonder if it crashes during shutdown too, and I just didn't notice since I was shutting down anyway.  I'll check on this as well.