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Description of problem: When configure domain with the following graphics: <graphics type='spice' autoport='yes' listen='0' passwd='test' passwdValidTo='1970-01-01T00:00:01'/> Try to start this domain, libvirtd crashed. # virsh start rhel55 error: Failed to start domain rhel55 error: server closed connection: /var/log/messages: ... Feb 16 12:50:15 dhcp-93-91 kernel: libvirtd[30940]: segfault at 0 ip 0000003245a80022 sp 00007f0670feb0a8 error 4 in libc-2.12.so[3245a00000+175000] Feb 16 12:50:15 dhcp-93-91 abrt[31052]: saved core dump of pid 30934 (/usr/sbin/libvirtd) to /var/spool/abrt/ccpp-1297878615-30934.new/coredump (69533696 bytes) .... Version-Release number of selected component (if applicable): libvirt-0.8.7-6.el6.x86_64 kernel-2.6.32-113.el6.x86_64 qemu-kvm-0.12.1.2-2.144.el6.x86_64 spice-server-0.7.2-4.el6.x86_64 How reproducible: Always Steps to Reproduce: 1. Define a domain with the xml file: <domain type='kvm'> <name>rhel55</name> <uuid>2814d348-ee12-9dd3-2373-99bb9301e8a7</uuid> <memory>1048576</memory> <currentMemory>1048576</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='rhel6.0.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/var/lib/libvirt/images/rhel55.img'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='network'> <mac address='52:54:00:8e:71:23'/> <source network='default'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='spice' autoport='yes' listen='0' passwd='test' passwdValidTo='1970-01-01T00:00:01'/> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </memballoon> </devices> </domain> 2. Try to start it. Actual results: libvirtd crashed. # virsh start rhel55 error: Failed to start domain rhel55 error: server closed connection: Expected results: libvirtd should works fine, no crash. Additional info: 1. Modify graphics type to "vnc", it works fine. 2. Keep graphics type with "spice", remove passwdValidTo='1970-01-01T00:00:01' attribute, domain is started successfully.