[Users] Panic on FreeBSD guest with >1 CPU

[Karli Sjöberg]

Hey all!

Since recently patching our hosts, I´ve been having trouble running FreeBSD guests with more than one virtual core or socket. I have managed take a screenshot of how it looks like when it panics when booting kernel, right after ACPI:
http://i47.tinypic.com/2u90qrr.png

I´ve tried this with similar results using 8.2-RELEASE, 8.3-RELEASE, 9.0-RELEASE and 9-STABLE.

If I edit the guest to have only one virtual core or socket, it boots up without issue.

Since noticing this, I´ve tried updating the packages one more time, thinking maybe it had already been fixed but no, it remains. These are the package versions I´m using:
# rpm -qa | egrep '(kernel|libvirt|qemu|vdsm|seabios)' | sort -d
ipxe-roms-qemu-20120328-1.gitaac9718.fc17.noarch
kernel-3.6.2-4.fc17.x86_64
kernel-3.6.3-1.fc17.x86_64
kernel-3.6.7-4.fc17.x86_64 << This is the one that´s running
libvirt-0.9.11.7-1.fc17.x86_64
libvirt-client-0.9.11.7-1.fc17.x86_64
libvirt-daemon-0.9.11.7-1.fc17.x86_64
libvirt-daemon-config-network-0.9.11.7-1.fc17.x86_64
libvirt-daemon-config-nwfilter-0.9.11.7-1.fc17.x86_64
libvirt-lock-sanlock-0.9.11.7-1.fc17.x86_64
libvirt-python-0.9.11.7-1.fc17.x86_64
qemu-common-1.0.1-2.fc17.x86_64
qemu-img-1.0.1-2.fc17.x86_64
qemu-kvm-1.0.1-2.fc17.x86_64
qemu-kvm-tools-1.0.1-2.fc17.x86_64
qemu-system-x86-1.0.1-2.fc17.x86_64
seabios-1.7.1-1.fc17.x86_64
seabios-bin-1.7.1-1.fc17.noarch
vdsm-4.10.0-10.fc17.x86_64
vdsm-cli-4.10.0-10.fc17.noarch
vdsm-python-4.10.0-10.fc17.x86_64
vdsm-xmlrpc-4.10.0-10.fc17.noarch

Do you have any insights as to what the problem might be?

Best Regards
Karli Sjöberg