[Spice-devel] qemu-2.0 / spice crash

[Marc-André Lureau]

Hi

I haven't been able to reproduce this crash, after multiple reboots.

What qemu command line do you use?

Could you also provide with the SPICE_DEBUG_LEVEL=5 log?

Here is what I used:

SPICE_DEBUG_LEVEL=5 leg ./x86_64-softmmu/qemu-system-x86_64 -enable-kvm -snapshot ~/VirtualMachines/win7-x64.img -m 1024 -chardev spicevmc,id=charchannel0,name=vdagent  -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -spice port=5912,disable-ticketing  -vga qxl

thanks

----- Original Message -----
> Qemu 2.0 crashes on (at least windows) guest machine reboot with
> spice-0.12.4, with the following backtrace:
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00007ffff211eae5 in spice_char_device_write_to_device (dev=0x55555725bf30)
> 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=0x55555725bf30) at char_device.c:443
> #1  0x00007ffff211fd81 in spice_char_device_start (dev=0x55555725bf30) 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=0x555556757610,
> 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=0x55555677c020,
> 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=0x555556745930,
> 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 (report=report at entry=true) 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
> 
> 
> Having essentially zero knowledge of qemu or spice at a source level, I threw
> together a quick patch that at least prevents the crash for me...which is
> attached here.
> 
> Thanks,
> -Rick
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