kernel-packages team mailing list archive

[James Hunt <1208455@xxxxxxxxxxxxxxxxxx>]

I'm suspecting an issue with nested=1... the nested VM does eventually
boot but it takes many minutes to do so. At this point, the cpu usage of
qemu-kvm drops to reasonable values. But if you ssh into the vm, the
usage jumps up to ~200% again.

To recreate:

$ sudo apt-get install -y genisoimage linux-image-extra-virtual bzr qemu-kvm qemu-utils
$ sudo usermod -G kvm -a ubuntu

<logout+back in>

$ sudo modprobe kvm_intel nested=1
$ bzr branch lp:auto-package-testing
$ cd auto-package-testing
$ bin/prepare-testbed -r saucy -d i386

... and observe ps output.

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

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

Status in “linux” package in Ubuntu:
  Incomplete
Status in “qemu-kvm” package in Ubuntu:
  New

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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