I am able to recreate a similar error in an opensuse guest: failure if guest started with "-smp 4,sockets=1,cores=1,threads=8" no error if guest started with "-smp 16,sockets=1,cores=2,threads=8" === libvirt started qemu command: /usr/bin/qemu-system-ppc64 -name opensuse_13_2_ppc64le -S -machine pseries-2.2,accel=kvm,usb=off -m 32768 -realtime mlock=off -smp 4,sockets=1,cores=1,threads=8 -uuid 4c973584-8ee9-410f-97bd-e03f5deff297 -nographic -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/home/normand/.config/libvirt/qemu/lib/opensuse_13_2_ppc64le.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device pci-ohci,id=usb,bus=pci.0,addr=0x1 -device spapr-vscsi,id=scsi0,reg=0x2000 -drive file=/home/normand/images/opensuse_13_2_ppc64le.qcow2,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=none -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 -drive file=/home/normand/images/opensuse_13_2_ppc64le.disk2.qcow2,if=none,id=drive-scsi0-0-0-1,format=qcow2,cache=none -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=1,drive=drive-scsi0-0-0-1,id=scsi0-0-0-1 -drive file=/home/normand/images/opensuse_13_2_ppc64le.disk3.qcow2,if=none,id=drive-scsi0-0-0-2,format=qcow2,cache=none -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=2,drive=drive-scsi0-0-0-2,id=scsi0-0-0-2 -drive file=http://sf1.test.toulouse-stg.fr.ibm.com:80/pub/linux/opensuse/13/ppc64le/iso/latest,if=none,id=drive-scsi0-0-0-4,readonly=on,format=raw -device scsi-cd,bus=scsi0.0,channel=0,scsi-id=0,lun=4,drive=drive-scsi0-0-0-4,id=scsi0-0-0-4,bootindex=2 -netdev tap,fd=24,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:89:84:34,bus=pci.0,addr=0x2 -chardev pty,id=charserial0 -device spapr-vty,chardev=charserial0,reg=0x30001000 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 -msg timestamp=on === ... $cd open work/openSUSE:Factory:PowerPC/doxygen/ @opensuse_13_2_ppc64le:/home/michel/work/openSUSE:Factory:PowerPC/doxygen[michel@opensuse_13_2_ppc64le:~/work/openSUSE:Factory:PowerPC/doxygen] $osc build --clean ... [ 325s] Generating docs for compound B/home/abuild/rpmbuild/BUILD/doxygen-1.8.9.1/vhdlparser/TokenManager.h:19: warning: Unsupported xml/html tag <EOF> found [ 342s] /var/tmp/rpm-tmp.xsDZ1b: line 48: 4026 Segmentation fault ./bin/doxygen [ 342s] error: Bad exit status from /var/tmp/rpm-tmp.xsDZ1b (%build) [ 342s] [ 342s] [ 342s] RPM build errors: [ 342s] Bad exit status from /var/tmp/rpm-tmp.xsDZ1b (%build) ====