-net socket,listen... segfaults

[Chris Cowan]

Binary package hint: kvm

I'm trying to get two virtual machines on the same vlan, looking at directions from http://www.gnome.org/~markmc/qemu-networking.html .
When I use this command:
"kvm -cdrom ubuntu-9.04-desktop-i386.iso -net nic -net socket,listen=:8010"
I just get "Segmentation fault".

If I try to make it listen on a port that's in use or a privileged port, I get a sensible error instead as expected:
 bind: Permission denied
 Could not initialize device 'socket'

I'm using kvm package version 1:84+dfsg-0ubuntu12 in Ubuntu 9.04.

[Harald (harald-redhat-bugs)]

qemu-system-x86-0.10-16.fc11.x86_64

$ sudo qemu -hda test/root.ext2 -m 256M -net nic,macaddr=52:54:00:12:34:56 -net socket,listen=localhost:4567 -kernel /boot/vmlinuz-$(uname -r) -initrd test/initramfs.testing -append "root=/dev/sda rw"
Segmentation fault

problem is "-net socket,listen=..."

(gdb) bt
#0 strlen () at ../sysdeps/x86_64/strlen.S:31
#1 0x0000003f9987f166 in *__GI___strdup (s=0x0) at strdup.c:42
#2 0x00000000004865a7 in net_socket_listen_init (host_str=<value optimized out>,
    name=<value optimized out>, model=<value optimized out>, vlan=<value optimized out>) at net.c:1622
#3 net_client_init (host_str=<value optimized out>, name=<value optimized out>,
    model=<value optimized out>, vlan=<value optimized out>) at net.c:1914
#4 0x0000000000486d27 in net_client_parse (str=<value optimized out>) at net.c:2039
#5 0x000000000040cf2d in main (argc=<value optimized out>, argv=<value optimized out>,
    envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.10/qemu/vl.c:5738
(gdb) quit

[Luiz (luiz-redhat-bugs)]

Glauber, this is already fixed upstream (Avi's qemu-kvm.git tree) it's commit ea053add700d8abe203cd79a9ffb082aee4eabc0 .

I will attach the patch here (so that you can apply in the package, in case you won't rebase soon).

[Luiz (luiz-redhat-bugs)]

Created attachment 344893
upstream fix

[Mark (mark-redhat-bugs)]

Glauber proposed this for the stable branch:

  http://marc.info/?l=qemu-devel&m=124286670230504

We'll pull the patch into an update soon

[Mark (mark-redhat-bugs)]

I'm pushing a qemu-0.10.5-2.fc11 update to updates-testing with this fix.

* Wed Jun 3 2009 Mark McLoughlin <email address hidden> - 2:0.10.5-2
- Prevent locked cdrom eject - fixes hang at end of anaconda installs (#501412)
- Fix crash with '-net socket,listen=...' (#501264)
- Avoid harmless 'unhandled wrmsr' warnings (#499712)

Note, this is already fixed in qemu-0.10.50-4.kvm86

[Fedora (fedora-redhat-bugs)]

qemu-0.10.5-2.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/qemu-0.10.5-2.fc11

[Bug (bug-redhat-bugs)]

This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

[Fedora (fedora-redhat-bugs)]

qemu-0.10.5-2.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.

[Dustin Kirkland  (kirkland)]

I just added a watch on a Fedora bug. Looks like it's been fixed in upstream qemu, and should be fixed in Karmic as soon as I merge qemu-kvm.

If you interested in testing some (very) unsupported daily builds, you can test the pristine upstream daily qemu-kvm package build available at:
 * https://edge.launchpad.net/~qemu/+archive/ppa

:-Dustin