Network IO with virtio-net driver and kvm results in crash

[Amit Shah]

Binary package hint: linux-image

While trying the kubuntu-kde4 hardy alpha CD within a kvm VM with virtio-net, network activity over the Internet results in a guest crash.

host details: kubuntu gutsy, kernel 2.6.25-rc3, kvm: 62+ (git)

command line to start VM:

qemu-system-x86_64 -m 1024 -vnc :2 -usbdevice tablet -net -drive file=/guests/kubuntu-kde4-hardy.qcow2,if=virtio,boot=on -net nic,model=virtio -net user

This crash did not recur when I installed the 2.6.25-rc3 kernel (with the virtio net module compiled in) in the guest.

The crash scrolled up too quickly for me to capture it; the last line indicated it was in virtnet_poll().

[Soren Hansen (soren)]

Do you still see this with an up-to-date hardy kernel and kvm-62 (as found in hardy)?

[Amit Shah (am1tshah)]

This is fixed in the 2.6.24-12-generic kernel. Thanks.