Digitial Guardian Agent + VirtualBox = BSOD

[Suo]

I can start the VirtualBox Manager, but when I attempt to start a VM, the Windows host blue screens. An attempt to fix this crash with dgmaster.sys was made in changeset 53021 ( https://www.virtualbox.org/changeset/53021/vbox ) but I am still seeing issues in VirtualBox 4.3.22 on Windows 7 x64. The only workaround I have found is to revert to 4.3.12. Unfortunately, VBox.log is not written before the system halts.

[Suo]

Photo of the BSOD

[Suo]

Windows Minidump from the crash

[mhanor]

The crash occurs in a Digital Guardian driver, you should contact them. Read  this

[bird]

I've made some improvements to the code I suspect triggers the dgmaster.sys crash. Could you try out this build and see if it helps, or at least produces a VBoxStartup.log file: https://www.virtualbox.org/download/testcase/VirtualBox-4.3.27-99267-Win.exe

[Suo]

I currently have a whitelist in place so Digital Guardian will not interfere with VirtualBox. I will test again on Monday without the whitelist. Normally Digital Guardian is not detectable, but, as a result of having VirtualBox whitelisted in Digital Guardian, VirtualBox can see that Digital Guardian is installed, so it triggers VB's DG workaround, which appears to have a bug in it that causes the hardening check to fail.

Failed to open a session for the virtual machine Ubuntu 14.04.

The virtual machine 'Ubuntu 14.04' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'D:\VirtualBox VMs\Ubuntu 14.04\Logs\VBoxStartup.log'.

Result Code: E_FAIL (0x80004005)
Component: Machine
Interface: IMachine {480cf695-2d8d-4256-9c7c-cce4184fa048}

[Suo]

We took out the whitelist and get the dgmaster.sys BSOD with VirtualBox build 99267.

[Suo]

No VBoxStartup.log is written due to the BSOD.

[mozzie]

I am also experiencing this exact issue with Digital Guardian. Let me know what might be useful, if anything. When I reproduced the issue, it was difficult to recover from the BSoD because the system faltered such that the screen was flashing and the power button did not interrupt the "seizure". I'll see if I can attach a video of it because it's at least entertaining.

[mozzie]

DG BSoD

[Suo]

VBoxStartup.log from VirtualBox-5.0.0_RC1-100731-Win with VirtualBox whitelisted in Digital Guardian

[Suo]

I tried again with the latest build (VirtualBox-5.0.0_RC1-100731-Win) and the verification still fails:

Error -5673 in supR3HardNtChildPurify! (enmWhat=5) supHardenedWinVerifyProcess failed with Unknown Status -5673 (0xffffe9d7): NtAllocateVirtualMemory

[Suo]

We received an update from Digital Guardian, version 6.23.0835, that resolves the problem. I am now able to run VirtualBox 5.1.4 with this new version of Digital Guardian.

[bird]

Closing as Digital Guardian seems to have sorted out the problem.