(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Fri, 17 Apr 2009 13:51:06 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13129 There's some additional info at the bugzillal ink. > Summary: Kernel panic after adding tap interface to bridge > Product: Networking > Version: 2.5 > Kernel Version: 2.6.27.21 > Platform: All > OS/Version: Linux > Tree: Fedora > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: acme@xxxxxxxxxxxxxxxxxx > ReportedBy: aatrof@xxxxxxxxx > Regression: No > > > Created an attachment (id=21029) > --> (http://bugzilla.kernel.org/attachment.cgi?id=21029) > serial output after kernel panic > > Box has a 1 active truncated Ethernet link with dozens VLANs. During system > startup virtual interfaces are created to separate each VLAN data from the > others'. Several brigdes sit on the top of them, one for each VLAN. Everything > works fine until I try to add kvm linux guest to whichever VLAN brigde. Then > kernel freezes in a few seconds. > > Steps to reproduce: > > 1) configure network interfaces accordingly to what has been described above > (standard RedHat/Fedora config files in /etc/sysconfig/network-scripts > suffice). > 2) create TAP device using tunctl > 3) change the state of the device to up > 4) add it to one of the bridges > 5) run guest machine with one interface paired with previously created TAP > device > > Steps 2-4 can be handled automatically by qemu-kvm running script like this > one: > > #!/bin/sh > # prep_script.sh > set -x > > switch=br100 > > if [ -n "$1" ];then > /usr/sbin/tunctl -p -t $1 > /sbin/ip link set $1 up > sleep 0.5s > /usr/sbin/brctl addif $switch $1 > exit 0 > else > echo "Error: no interface specified" > exit 1 > fi > > Then guest can be fired up using the following command: > > qemu-kvm -m 1024 -net nic,model=e1000 -net tap,script=/path/to/prep_script.sh > /path/to/disk.img > > Additional info: > > Host: Fedora 10 (see kernel ring buffer output file and kernel config file) > Guest: CentOS 5.3 > _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
