On further investigation this isn't actually an n-cpu crash, it's actually a hard lockup of the nova-compute process. At some point it just stops responding, and the process running under devstack is not even ^C killable any more after this. So there is some deadlock introduced by the new packages.
On further investigation this isn't actually an n-cpu crash, it's actually a hard lockup of the nova-compute process. At some point it just stops responding, and the process running under devstack is not even ^C killable any more after this. So there is some deadlock introduced by the new packages.