virtio networking dies in KVM guest with kernel backtrace

[Dustin Kirkland ]

I recently migrated my produce KVM host and guests to 10.04.

I'm seeing my guest's networking (virtio + bridging) crash after about ~3 days of uptime.

I'll attach the stack trace in dmesg.

Ideas?

[Dustin Kirkland  (kirkland)]

kernel stack trace attached

[Dustin Kirkland  (kirkland)]

<apw> i'd say i'd expect the allocation to be allowed to fail and the packet simply be dropped
<apw> as it wasn't and tripped an oom i'd say its a bug

[Jeremy Foshee (jeremyfoshee)]

Hi Dustin,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 572368

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Sergey Svishchev (svs)]

This may be a dup of bug 579276, juding by these lines from the backtrace:

[327444.131931] [<ffffffff813d6e44>] try_fill_recv+0x54/0x200
[327444.131938] [<ffffffff813d719d>] virtnet_poll+0x10d/0x160