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

[Andreas Hasenack]

Also crashed with the packages from the other ppa:

ubuntu@f1:~$ qemu-system-x86_64 --help 2>&1|head -n 1
QEMU emulator version 4.2.0 (Debian 1:4.2-3ubuntu3~exp1)

ubuntu@f1:~$ qemu-system-x86_64 --enable-kvm -cpu Penryn,vmx=on -m 512 
--nodefaults --nographic
qemu-system-x86_64: warning: host doesn't support requested feature: 
CPUID.01H:ECX.sse4.1 [bit 19]
KVM internal error. Suberror: 1
emulation failure
EAX=00000000 EBX=00000000 ECX=000086d4 EDX=00000000
ESI=00000000 EDI=00000000 EBP=000086d4 ESP=00006d7c
EIP=00007acf EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 00000000 ffffffff 00809300
CS =f000 000f0000 ffffffff 00809b00
SS =0000 00000000 ffffffff 00809300
DS =0000 00000000 ffffffff 00809300
FS =0000 00000000 ffffffff 00809300
GS =0000 00000000 ffffffff 00809300
LDT=0000 00000000 0000ffff 00008200
TR =0000 00000000 0000ffff 00008b00
GDT=     000f6200 00000037
IDT=     00000000 000003ff
CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 
DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000000
Code=b8 90 d9 00 00 66 e8 6b f7 ff ff 66 b8 0a 00 00 00 e9 61 f2 <f3> 0f 1e fb 
66 57 66 56 66 53 66 53 66 89 c7 67 66 89 14 24 66 89 ce 66 e8 15 f8 ff ff 88


ubuntu@f1:~$ apt-cache policy qemu-kvm
qemu-kvm:
  Installed: 1:4.2-3ubuntu3~exp1
  Candidate: 1:4.2-3ubuntu3~exp1
  Version table:
 *** 1:4.2-3ubuntu3~exp1 500
        500 
http://ppa.launchpad.net/paelzer/bug-1866870-qemu-penryn-crash-fullreverts/ubuntu
 focal/main amd64 Packages
        100 /var/lib/dpkg/status
     1:4.2-3ubuntu2 500
        500 http://br.archive.ubuntu.com/ubuntu focal/main amd64 Packages

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

Title:
  KVM Guest pauses after upgrade to Ubuntu 20.04

Status in QEMU:
  New
Status in qemu package in Ubuntu:
  Incomplete

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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