Comment 0 for bug 1731066

In Pike upon attempting to suspend an instance on an ARM64 host, the following error occurs

2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] Traceback (most recent call last):
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 6815, in _error_out_instance_on_exception
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] yield
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 4238, in suspend_instance
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] self.driver.suspend(context, instance)
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2658, in suspend
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] guest.save_memory_state()
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 505, in save_memory_state
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] self._domain.managedSave(0)
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 186, in doit
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] result = proxy_call(self._autowrap, f, *args, **kwargs)
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 144, in proxy_call
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] rv = execute(f, *args, **kwargs)
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 125, in execute
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] six.reraise(c, e, tb)
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 83, in tworker
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] rv = meth(*args, **kwargs)
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] File "/usr/lib/python2.7/dist-packages/libvirt.py", line 1427, in managedSave
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] if ret == -1: raise libvirtError ('virDomainManagedSave() failed', dom=self)
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352] libvirtError: Unable to read from monitor: Connection reset by peer
2017-11-08 21:37:35.345 241677 ERROR nova.compute.manager [instance: 8036044b-067b-4be3-916e-29d34b1c3352]

libvirt-bin:
  Installed: 3.6.0-1ubuntu5~cloud0
  Candidate: 3.6.0-1ubuntu5~cloud0

In the libvirt logs, I see:

2017-11-08 22:14:32.528+0000: Domain id=1 is tainted: host-cpu
KVM_SET_DEVICE_ATTR failed: Group 4 attr 0x0000000000000001: No such device or address
2017-11-08 22:17:52.733+0000: shutting down, reason=crashed

I've attached the full output of my commands to the bug.