[vbox-dev] Host BSOD after r49150 and r49151

Vic Lee llyzs.vic at gmail.com
Sun Oct 20 05:34:13 UTC 2013

Hi there,

Recently when I updated to latest SVN tree I found out that my host 
(yes, the host, not guest) always BSOD whenever I try to start any VM 
with more than 1 vCPU. This kind of BSOD is so weird, that there's no 
bug check code or minidump whatsoever, only a bluescreen with some texts 
saying things like "Hardware Malfunction" (google "BSOD hardware 
malfunction" for images and you will see what I mean). So I can't tell 
which source line exactly is causing it. I managed to confirm the following:

1. It happens only after r49150 and r49151 (which should be the same 
changeset). If I stay at revision r49149 it's ok.
2. It happens only if I use more than 1 vCPU in the guest. Everything 
seems to be fine if I change the VM to use 1 vCPU.
3. I tried to boot a windows 7 installation CD in a newly created VM, 
but the host still BSOD (as long as condition 1 and 2 are met), just 
before the setup ran into graphic mode. So it should have nothing to do 
with guest OS.

Anyone is aware of this or trying to fix it?



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