Guru Meditation after running a few hours

[AdrianPeterSmith]

See attached log file

[AdrianPeterSmith]

another example

[AdrianPeterSmith]

have also tried 4.3.27 test build

[AdrianPeterSmith]

and another

[Frank Mehnert]

Thanks for the log files. We saw very rare reports like this in the past (VERR_VMX_INVALID_VMXON_PTR Gurus) but were never able to reproduce this. Do you have any software running on the host worth to mention which could interfere with VirtualBox, like another virtualization application?

[AdrianPeterSmith]

Not knowingly. My host is a corporate build of 64bit Windows 7. In task manager I can see some Microsoft Virtualisation stuff: I have attached screenshot.

[AdrianPeterSmith]

I tried stopping all those processes, but still got the crash.

[Frank Mehnert]

One further question: Did you use any version of VirtualBox before where this didn't happen, i.e. is this problem a (recent?) regression?

[Clemi]

Hi,

This sounds like an issue I was having.

When we were getting Guru meditation, within a second of a Meditation, Windows Event Viewer was making comments about adjusting VM settings, and starting new VMs. Which is interesting as these messages were attached to ‘Windows Virtual PC’. I think I had had a windows update which reactivated my old Windows Virtual PC.

To disable Windows Virtual PC on Windows 7 Control Panel > Programs and Features > Turn Windows features on or off > untick Windows Virtual PC (third from the bottom) then restart

Me and 5+ people were getting this issue in our office, and since we have disabled Windows Virtual PC, we stopped getting guru meditations :D

Hope this is useful, if not good luck.

[Ramshankar Venkataraman]

The next maintenance version of VirtualBox should contain some extra bits of diagnostic information when the guru happens. At the moment, we cannot see anything wrong with our code and I strongly suspect this is due to some other programs on the host OS that interferes with our VT-x usage.

[Raster]

Log from 4.3.28 crash

[Raster]

Another crash of 4.3.28 with possibly more info.

[Raster]

Can confirm that disabling the Windows Virtual PC fixes the issue.

[AndrewFenton]

I had been experiencing the same problem with my virtual machines going into guru mediation. I therefore followed the instruction to uninstall the Windows Virtual PC software as stated by the user Clemi and the issue has now stopped. Hence, I can confirm that uninstalling the Windows Virtual PC software resolved the issue for me.