Hi all,

1, This issue is caused by the following 2 commits in upstream kernel:
9c573cd31343 randomize_kstack: Improve entropy diffusion
ef40d28f17bd randomize_kstack: Remove non-functional per-arch entropy filtering

But only virtualbox 6.1.50 will crash.
VirtualBox 6.1.x is no longer supported!  Which is anounced by virtualbox.org.

So it's a bit hard to push kernel changes for an unsupported application.
I will file an upstream bug to try.

2, virtualbox 7.0.20 from virtualbox.org will work well on all the
kernel versions.

Please use virtualbox 7.0.20 if you can.


** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
       Status: New => Triaged

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => AaronMa (mapengyu)

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-signed-hwe-5.15 in Ubuntu.
https://bugs.launchpad.net/bugs/2073267

Title:
  Guru meditation on VM start

Status in linux package in Ubuntu:
  Triaged
Status in linux-signed-hwe-5.15 package in Ubuntu:
  Confirmed
Status in virtualbox package in Ubuntu:
  Confirmed

Bug description:
  It worked yesterday, but today I get a Guru Meditation trying to start
  some of my virtual machines. This shows up in VBox.log as "VCPU0: Guru
  Meditation -2708 (VERR_VMM_SET_JMP_ABORTED_RESUME)". I suspect this
  may have started due to a Linux kernel upgrade I installed this
  morning.

  A fresh VM with no disk shows the issue. Sometimes turning off the I/O
  APIC makes the issue go away, sometimes not. Turning off nested paging
  sometimes lets VirtualBox make a little bit of progress w.r.t. booting
  VMs, but that usually still crashes before the VM finishes starting.

  This may be related to this bug reported on the VirtualBox forums:
  
https://forums.virtualbox.org/viewtopic.php?t=111889&sid=5cd33c0872a03b689e7e9f84d850f538

  Ubuntu is 22.04.4 LTS, kernel is 5.15.0-116-generic, VirtualBox is
  6.1.50-dfsg-1~ubuntu1.22.04.1.

To manage notifications about this bug go to:
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