Public bug reported:

After I rebooted my host with Kernel version 5.15.0-116-generic, all my
VirtualBox machines failed to start. Upon checking logs, I found out
that all machines were stuck in GuruMeditation state. Example entries
from one of the machine's log:

00:00:03.505326 Changing the VM state from 'CREATING' to 'CREATED'
00:00:03.514563 Changing the VM state from 'CREATED' to 'POWERING_ON'
00:00:03.514994 Changing the VM state from 'POWERING_ON' to 'RUNNING'
00:00:03.515025 Console: Machine state changed to 'Running'
00:00:03.516280 VBoxHeadless: starting event loop
00:00:03.516815 Changing the VM state from 'RUNNING' to 'GURU_MEDITATION'
00:00:03.516846 Console: Machine state changed to 'GuruMeditation'

I tried rebooting host but it didn't help. Only when I rolled back to
kernel version 5.15.0-113-generic, everything went back to normal and
all my VMs started up without any issue.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.15.0-116-generic 5.15.0-116.126~20.04.1
ProcVersionSignature: Ubuntu 5.15.0-113.123~20.04.1-generic 5.15.152
Uname: Linux 5.15.0-113-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.27
Architecture: amd64
CasperMD5CheckMismatches: ./boot/grub/efi.img
CasperMD5CheckResult: fail
Date: Sun Jul 21 17:14:06 2024
InstallationDate: Installed on 2021-01-21 (1276 days ago)
InstallationMedia: Ubuntu-Server 20.04.1 LTS "Focal Fossa" - Release amd64 
(20200731)
ProcEnviron:
 SHELL=/bin/bash
 LANG=C.UTF-8
 TERM=screen.xterm-256color
 PATH=(custom, no user)
SourcePackage: linux-signed-hwe-5.15
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-signed-hwe-5.15 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal third-party-packages

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https://bugs.launchpad.net/bugs/2073691

Title:
  Updating to linux-image-5.15.0-116-generic causes all VirtualBox
  machines go to GuruMeditation state

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