Description of problem:
Starting a guest virtual machine

Version-Release number of selected component:
qemu-system-x86-1.2.0-19.fc18

Additional info:
libreport version: 2.0.18
abrt_version:   2.0.18
backtrace_rating: 4
cmdline:        /usr/bin/qemu-kvm -name lubuntu-12.10-desktop-i386.iso-2 -S -M pc-1.2 -cpu SandyBridge,+osxsave,+pdcm,+xtpr,+tm2,+est,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme -enable-kvm -m 2042 -smp 4,sockets=1,cores=2,threads=2 -uuid 2aebe581-ff09-89b4-ea5d-f27735afe336 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/home/znmeb/.config/libvirt/qemu/lib/lubuntu-12.10-desktop-i386.iso-2.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -no-kvm-pit-reinjection -no-shutdown -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive file=/home/znmeb/.local/share/gnome-boxes/images/lubuntu-12.10-desktop-i386.iso-2,if=none,id=drive-ide0-0-0,format=qcow2,cache=none -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=/home/znmeb/ISOs/Ubuntu/lubuntu-12.10-desktop-i386.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev user,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:db:5e:c7,bus=pci.0,addr=0x3 -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 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing -vga qxl -global qxl-vga.vram_size=67108864 -device AC97,id=sound0,bus=pci.0,addr=0x4 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
crash_function: realloc_and_trace
kernel:         3.6.5-2.fc18.x86_64

truncated backtrace:
:Thread no. 1 (10 frames)
: #6 realloc_and_trace at /usr/src/debug/qemu-kvm-1.2.0/vl.c:2329
: #7 g_realloc at gmem.c:224
: #8 qemu_alloc_display at console.c:1321
: #9 defaultallocator_resize_displaysurface at console.c:1307
: #10 qemu_resize_displaysurface at console.h:207
: #11 qemu_console_resize at console.c:1597
: #12 vga_draw_text at /usr/src/debug/qemu-kvm-1.2.0/hw/vga.c:1347
: #13 vga_update_display at /usr/src/debug/qemu-kvm-1.2.0/hw/vga.c:1901
: #15 qemu_spice_display_refresh at ui/spice-display.c:421
: #16 dpy_refresh at /usr/src/debug/qemu-kvm-1.2.0/console.h:267