[Bug 1866870] Re: KVM Guest pauses after upgrade to Ubuntu 20.04

[Andreas Weller]

Hello!
Unfortunately the bug has apparently reappeared. I have a Windows 10 running in 
a VM, which after my today's "apt upgrade" goes into pause mode after a few 
seconds of running time.

Tail output of my /var/log/libvirt/qemu/win10.log
char device redirected to /dev/pts/1 (label charserial0)
2020-05-05T08:53:23.733051Z qemu-system-x86_64: warning: host doesn't support 
requested feature: MSR(48FH).vmx-exit-load-perf-global-ctrl [bit 12]
2020-05-05T08:53:23.733122Z qemu-system-x86_64: warning: host doesn't support 
requested feature: MSR(490H).vmx-entry-load-perf-global-ctrl [bit 13]
2020-05-05T08:53:23.736093Z qemu-system-x86_64: warning: host doesn't support 
requested feature: MSR(48FH).vmx-exit-load-perf-global-ctrl [bit 12]
2020-05-05T08:53:23.736110Z qemu-system-x86_64: warning: host doesn't support 
requested feature: MSR(490H).vmx-entry-load-perf-global-ctrl [bit 13]
2020-05-05T08:54:04.912098Z qemu-system-x86_64: terminating on signal 15 from 
pid 1593 (/usr/sbin/libvirtd)
2020-05-05 08:54:05.112+0000: shutting down, reason=destroyed


Apt upgraded packages (from /var/log/apt/history.log):
Start-Date: 2020-05-05  09:32:02
Commandline: apt upgrade
Requested-By: andreas (1000)
Install: linux-image-5.4.0-29-generic:amd64 (5.4.0-29.33, automatic), 
linux-modules-extra-5.4.0-29-generic:amd64 (5.4.0-29.33, automatic), 
linux-headers-5.4.0-29-generic:amd64 (5.4.0-29.33, automatic), 
linux-modules-5.4.0-29-generic:amd64 (5.4.0-29.33, automatic), 
linux-headers-5.4.0-29:amd64 (5.4.0-29.33, automatic)
Upgrade: linux-headers-generic:amd64 (5.4.0.28.33, 5.4.0.29.34), 
linux-libc-dev:amd64 (5.4.0-28.32, 5.4.0-29.33), linux-image-generic:amd64 
(5.4.0.28.33, 5.4.0.29.34), linux-generic:amd64 (5.4.0.28.33, 5.4.0.29.34)
End-Date: 2020-05-05  09:33:11


Kind regards,
   Andreas

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https://bugs.launchpad.net/bugs/1866870

Title:
  KVM Guest pauses after upgrade to Ubuntu 20.04

Status in QEMU:
  Invalid
Status in qemu package in Ubuntu:
  Invalid
Status in seabios package in Ubuntu:
  Fix Released

Bug description:
  Symptom:
  Error unpausing domain: internal error: unable to execute QEMU command 
'cont': Resetting the Virtual Machine is required

  Traceback (most recent call last):
    File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in 
cb_wrapper
      callback(asyncjob, *args, **kwargs)
    File "/usr/share/virt-manager/virtManager/asyncjob.py", line 111, in tmpcb
      callback(*args, **kwargs)
    File "/usr/share/virt-manager/virtManager/object/libvirtobject.py", line 
66, in newfn
      ret = fn(self, *args, **kwargs)
    File "/usr/share/virt-manager/virtManager/object/domain.py", line 1311, in 
resume
      self._backend.resume()
    File "/usr/lib/python3/dist-packages/libvirt.py", line 2174, in resume
      if ret == -1: raise libvirtError ('virDomainResume() failed', dom=self)
  libvirt.libvirtError: internal error: unable to execute QEMU command 'cont': 
Resetting the Virtual Machine is required

  
  ---

  As outlined here:
  https://bugs.launchpad.net/qemu/+bug/1813165/comments/15

  After upgrade, all KVM guests are in a default pause state. Even after
  forcing them off via virsh, and restarting them the guests are paused.

  These Guests are not nested.

  A lot of diganostic information are outlined in the previous bug
  report link provided. The solution mentioned in previous report had
  been allegedly integrated into the downstream updates.

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