Looks like Fuel misconfigures nova-compute so it reports wrong CPU capabilites (and the newer kernel tries to make use of them and Oopses).
Could you please try reproducing the problem with Ubuntu 14.04 *guest* running 4.4.0-x kernel?
Also what happens if you downgrade the kernel in xenial?
Looks like Fuel misconfigures nova-compute so it reports wrong CPU capabilites (and the newer kernel tries to make use of them and Oopses).
Could you please try reproducing the problem with Ubuntu 14.04 *guest* running 4.4.0-x kernel?
Also what happens if you downgrade the kernel in xenial?