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qemuDomainAttachVirtioDiskDevice passes NULL as domainDef which is later referenced in qemuDomainAttachVirtioDiskDevice: Program terminated with signal 11, Segmentation fault. #0 qemuBuildDeviceAddressStr (buf=buf@entry=0xb646de78, info=info@entry=0xb0a02360, qemuCaps=qemuCaps@entry=0xb8fdfdc8, domainDef=<error reading variable: Unhandled dwarf expression opcode 0xfa>, domainDef=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at qemu/qemu_command.c:2869 2869 for (i = 0; i < domainDef->ncontrollers; i++) { (gdb) bt #0 qemuBuildDeviceAddressStr (buf=buf@entry=0xb646de78, info=info@entry=0xb0a02360, qemuCaps=qemuCaps@entry=0xb8fdfdc8, domainDef=<error reading variable: Unhandled dwarf expression opcode 0xfa>, domainDef=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at qemu/qemu_command.c:2869 #1 0xb18ad6f8 in qemuBuildDriveDevStr (def=def@entry=0x0, disk=disk@entry=0xb0a02288, bootindex=bootindex@entry=0, qemuCaps=0xb8fdfdc8) at qemu/qemu_command.c:4316 #2 0xb18d097f in qemuDomainAttachVirtioDiskDevice (conn=conn@entry=0xb90129a8, driver=driver@entry=0xb8fe29b8, vm=vm@entry=0xb8fe0c40, disk=disk@entry=0xb0a02288) at qemu/qemu_hotplug.c:278 #3 0xb193f7ba in qemuDomainAttachDeviceDiskLive (dev=0xb0a35308, vm=0xb8fe0c40, driver=0xb8fe29b8, conn=0xb90129a8) at qemu/qemu_driver.c:6356 #4 qemuDomainAttachDeviceLive (dev=0xb0a35308, vm=0xb8fe0c40, dom=<optimized out>) at qemu/qemu_driver.c:6418 #5 qemuDomainAttachDeviceFlags (dom=dom@entry=0xb0a020b8, xml=xml@entry=0xb90953f0 "<disk type='file' device='disk'>\n <source file='/var/lib/jenkins/jobs/libvirt-tck-build/workspace/scratchdir/200-disk-hotplug/extra.img'/>\n <target dev='vdb' bus='virtio'/>\n</disk>\n", flags=3103664568, flags@entry=1) at qemu/qemu_driver.c:7079 #6 0xb193f9cb in qemuDomainAttachDevice (dom=0xb0a020b8, xml=0xb90953f0 "<disk type='file' device='disk'>\n <source file='/var/lib/jenkins/jobs/libvirt-tck-build/workspace/scratchdir/200-disk-hotplug/extra.img'/>\n <target dev='vdb' bus='virtio'/>\n</disk>\n") at qemu/qemu_driver.c:7120 #7 0xb7244827 in virDomainAttachDevice (domain=domain@entry=0xb0a020b8, xml=0xb90953f0 "<disk type='file' device='disk'>\n <source file='/var/lib/jenkins/jobs/libvirt-tck-build/workspace/scratchdir/200-disk-hotplug/extra.img'/>\n <target dev='vdb' bus='virtio'/>\n</disk>\n") at libvirt.c:10912 #8 0xb7765ddb in remoteDispatchDomainAttachDevice (args=0xb9094ef0, rerr=0xb646e1f0, client=<optimized out>, server=<optimized out>, msg=<optimized out>) at remote_dispatch.h:2296 #9 remoteDispatchDomainAttachDeviceHelper (server=0xb8fba0e8, client=0xb0a00730, msg=0xb0a350b8, rerr=0xb646e1f0, args=0xb9094ef0, ret=0xb9094dc8) at remote_dispatch.h:2274 #10 0xb72b1013 in virNetServerProgramDispatchCall (msg=0xb0a350b8, client=0xb0a00730, server=0xb8fba0e8, prog=0xb8fc21c8) at rpc/virnetserverprogram.c:435 #11 virNetServerProgramDispatch (prog=0xb8fc21c8, server=server@entry=0xb8fba0e8, client=0xb0a00730, msg=0xb0a350b8) at rpc/virnetserverprogram.c:305 #12 0xb72aa167 in virNetServerProcessMsg (msg=<optimized out>, prog=<optimized out>, client=<optimized out>, srv=0xb8fba0e8) at rpc/virnetserver.c:165 #13 virNetServerHandleJob (jobOpaque=0xb0a0a850, opaque=0xb8fba0e8) at rpc/virnetserver.c:186 #14 0xb7189108 in virThreadPoolWorker (opaque=opaque@entry=0xb8fa3250) at util/virthreadpool.c:144 #15 0xb71885e5 in virThreadHelper (data=0xb8fa32a8) at util/virthreadpthread.c:161 #16 0xb70d6954 in start_thread (arg=0xb646eb70) at pthread_create.c:304 #17 0xb704e95e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130 This was found by libvirtt-tck: http://honk.sigxcpu.org:8001/job/libvirt-tck-debian-wheezy-qemu-session/1311/console
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>