qemu segfault when starting virt-manager

[Pieter Hollants]

libvirtd 1.2.3
virt-manager 1.0.1
qemu 1.7.92 (2.0.0-rc2)

1. Initially virt-manager is NOT running

2. I start a VM manually using "virsh start ...", causing a qemu instance to be run as

/usr/bin/qemu-system-x86_64 -machine accel=kvm -name Zeus_Virtualized -S -machine pc-i440fx-2.0,accel=kvm,usb=off -cpu Penryn -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 6384b4d2-1c58-4595-bce2-b248230e2c9c -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/Zeus_Virtualized.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x4.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x4 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x4.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x4.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/home/pief/libvirt VMs/Zeus_Virtualized_USBStick.qcow2,if=none,id=drive-usb-disk0,format=qcow2 -device usb-storage,drive=drive-usb-disk0,id=usb-disk0,removable=off -drive file=/home/pief/isos/openSUSE-13.1-DVD-x86_64.iso,if=none,id=drive-ide0-0-0,readonly=on,format=raw -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=/home/pief/libvirt VMs/Zeus_Virtualized_HDD1.qcow2,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0 -drive file=/home/pief/libvirt VMs/Zeus_Virtualized_HDD2.qcow2,if=none,id=drive-virtio-disk1,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk1,id=virtio-disk1 -drive file=/home/pief/libvirt VMs/Zeus_Virtualized_SSD.qcow2,if=none,id=drive-virtio-disk2,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk2,id=virtio-disk2,bootindex=2 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -vnc 127.0.0.1:0 -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x3 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0 -chardev spicevmc,id=charredir1,name=usbredir -device usb-redir,chardev=charredir1,id=redir1 -chardev spicevmc,id=charredir2,name=usbredir -device usb-redir,chardev=charredir2,id=redir2 -chardev spicevmc,id=charredir3,name=usbredir -device usb-redir,chardev=charredir3,id=redir3 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x9

3. I start virt-manager (just starting it, nothing special).

4. The qemu instance segfaults with the attached backtrace.

[Pieter Hollants (pieter-0)]

No crash BTW if virt-manager is started first and THEN "virsh start..." is executed.

[Peter Maydell (pmaydell)]

Judging by the backtrace this is the bug fixed by commit 92b3eeadd9bc, which is in current git master and will be in the imminent 2.0.0-rc3.

[Cole Robinson (crobinso)]

Fix is already queued for qemu 2.0 GA

commit 92b3eeadd9bc72f1f4e5ba1f62a289dc0190e88f
Author: Cole Robinson <email address hidden>
Date: Thu Apr 10 14:47:38 2014 -0400

    qom: Fix crash with qom-list and link properties

[Laszlo Ersek (Red Hat) (lersek)]

On 04/14/14 20:47, Pieter Hollants wrote:
> Public bug reported:
>
> libvirtd 1.2.3
> virt-manager 1.0.1
> qemu 1.7.92 (2.0.0-rc2)

I think this should be fixed by Cole's patch, in rc3:

commit 92b3eeadd9bc72f1f4e5ba1f62a289dc0190e88f
Author: Cole Robinson <email address hidden>
Date: Thu Apr 10 14:47:38 2014 -0400

    qom: Fix crash with qom-list and link properties

http://thread.gmane.org/gmane.comp.emulators.qemu/266588

Laszlo

[Pieter Hollants (pieter-0)]

Yep, confirm it's fixed in rc3.