kernel-packages team mailing list archive

[Seth Forshee <seth.forshee+lp@xxxxxxxxxxxxx>]

I tried reproducing this while using trusty on the host and was unable
to do so. I also could not reproduce with the trusty kernel (currently
3.12) running with saucy userspace on the host. So as far as I can tell
the issue is fixed in 3.12.

I took a stab at trying to bisect, but something between 3.11 and
3.12-rc1 is causing the machine to not boot. With 3.12-rc1 my VMs failed
to boot, and with 3.12-rc2 I couldn't reproduce the issue at all. So it
looks like bisecting to find the fix will be nearly impossible. Going
through the kvm commits in 3.12 revealed a lot of changes related to
running nested VMs but nothing that stood out from the pack.

So if anyone _really_ needs this fixed in saucy, let me know, otherwise
I'm going to assume that having it fixed in trusty is good enough.

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https://bugs.launchpad.net/bugs/1208455

Title:
  general protection fault running apt-get inside double nested kvm VM

Status in “linux” package in Ubuntu:
  In Progress
Status in “qemu-kvm” package in Ubuntu:
  Confirmed
Status in “linux” source package in Saucy:
  In Progress
Status in “qemu-kvm” source package in Saucy:
  Confirmed

Bug description:
  Attempting to run apt-get in a nested vm hosted in OpenStack results
  in a  general protection fault in the kernel in the nested VM.

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