kqemu: Crashes, already running machines are loosing netcards

[Martin]

Hi.
KQEMU crashes if you trying to attach new machines with libvirt-manager. Already (auto) running machines lost the virtual hardware NIC, also the client are loosed the net connections. I recommend to solve this issue as soon as possible.

I have watched:
Creating the KQEMU module with the module assistant (m-a a-i...) fails. After I have made a new link to the linux sources, the module assistant fails too.
Creating the module in /usr/src/kqemu.. running well. After the installation.sh, a KQEMU module is running after reboot (or with insmod), but with the errors I have described above.

The following may help you to find the errors:

Messagebox output:
Unable to complete install '<type 'exceptions.RuntimeError'> It appears that your installation has crashed. You should be able to find more information in the logs
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/create.py", line 1485, in do_install
    dom = guest.start_install(False, meter = meter)
  File "/usr/lib/python2.6/dist-packages/virtinst/Guest.py", line 541, in start_install
    return self._do_install(consolecb, meter, removeOld, wait)
  File "/usr/lib/python2.6/dist-packages/virtinst/Guest.py", line 643, in _do_install
    raise RuntimeError, _("It appears that your installation has crashed. You should be able to find more information in the logs")
RuntimeError: It appears that your installation has crashed. You should be able to find more information in the logs

Logfile output:
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin /usr/bin/qemu-system-x86_64 -S -M pc-0.11 -m 512 -smp 1 -name Hera -uuid cadc15c4-90e1-52bc-dcdb-e63bda9cbafd -monitor unix:/var/run/libvirt/qemu/Hera.monitor,server,nowait -no-reboot -boot d -drive file=/var/lib/libvirt/images/Hera.img,if=ide,index=0 -drive file=/dev/sr0,if=ide,media=cdrom,index=2 -net nic,macaddr=54:52:00:37:d2:da,vlan=0,name=nic.0 -net tap,fd=18,vlan=0,name=tap.0 -serial pty -parallel none -usb -vnc 127.0.0.1:0 -k en-us -vga cirrus -soundhw es1370
open /dev/kvm: No such file or directory
Could not initialize KVM, will disable KVM support
char device redirected to /dev/pts/1

/var/log/messages:
Sep 2 12:26:18 Erebos kernel: [ 40.550564] QEMU Accelerator Module version 1.4.0, Copyright (c) 2005-2008 Fabrice Bellard
Sep 2 12:26:18 Erebos kernel: [ 40.550564] KQEMU installed, max_locked_mem=770080kB.
Sep 2 12:26:21 Erebos kernel: [ 43.305227] virbr0: starting userspace STP failed, starting kernel STP
Sep 2 12:26:21 Erebos kernel: [ 43.337310] ip_tables: (C) 2000-2006 Netfilter Core Team
Sep 2 12:26:21 Erebos kernel: [ 43.497951] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Sep 2 12:26:21 Erebos kernel: [ 43.498392] CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
Sep 2 12:26:21 Erebos kernel: [ 43.498394] nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
Sep 2 12:26:21 Erebos kernel: [ 43.498396] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
Sep 2 12:26:23 Erebos kernel: [ 45.397066] lo: Disabled Privacy Extensions
Sep 2 12:26:25 Erebos rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="2384" x-info="http://www.rsyslog.com"] rsyslogd was HUPed, type 'lightweight'.
Sep 2 13:08:41 Erebos kernel: [ 2582.859233] __ratelimit: 6 callbacks suppressed
Sep 2 13:08:41 Erebos kernel: [ 2582.859237] type=1505 audit(1251889721.279:14): operation="profile_load" pid=4777 name=libvirt-cadc15c4-90e1-52bc-dcdb-e63bda9cbafd
Sep 2 13:08:41 Erebos kernel: [ 2583.024256] tun: Universal TUN/TAP device driver, 1.6
Sep 2 13:08:41 Erebos kernel: [ 2583.024258] tun: (C) 1999-2004 Max Krasnyansky <email address hidden>
Sep 2 13:08:41 Erebos kernel: [ 2583.027250] device vnet0 entered promiscuous mode
Sep 2 13:08:41 Erebos kernel: [ 2583.027616] br0: port 2(vnet0) entering forwarding state
Sep 2 13:08:41 Erebos kernel: [ 2583.295424] qemu-system-x86[4785]: segfault at 20 ip 00000000004df9b1 sp 00007fffb2c83ef0 error 6 in qemu-system-x86_64[400000+226000]

If you have any further qestions, don't hestitate to contact me.

Best Regards

Martin

[arky (arky)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage. I have classified this bug as a bug in kqemu.

When reporting bugs in the future please use apport, either via the appropriate application's "Help -> Report a Problem" menu or using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.