virtualbox.org

Hi.

I'm using vbox 4.3.38... on FreeBSD (yeah, I know there's a FreeBSD forum next door, but it's more like cemetery, I guess nobody is even reading it). I'm not requesting support, I'm just hoping someone can decipher the log to me in case it's something common. This host has ran Windows 2003 for several years without any problems, but after the upgrade to Windows 2012 (I had to, in order to upgrade the AD schema, - this was the last DC) I started to have these issues. Sometimes it's able to boot and work for some days, even for a week, but then again it drops into a GURU MEDITATION.

Thanks.

We can't officially support forks here. You might want to Google for VERR_VMM_RING0_ASSERTION, since that's the error you're getting. In the past I believe this implies that something else on the host may be using VT-x, and not cleaning up properly after itself.

I notice that you have the Windows 8.1 (64bit) template selected. Why didn't you use the Win2k12 template? Did you upgrade the VM in place or was it a fresh install? If the latter, was it previously a 64bit VM?

Minor point: you still have the GAs mounted. I would eject those.

Thank you for your answer, I know FreeBSD isn't supported and I really appreciate you're answering. Yup, I selected Windows 8.1 template since I thought there's no template for windows 2012, but after you noticed it I rechecked and found there is one actually. After changing the template the VM was finally able to boot. Your post is the exact thing I was hoping for, in case the issue will continue to arise, I will investigate what's happening around the VERR_VMM_RING0_ASSERTION error and ask in the FreeBSD emulation ML (there guru meditation logs are really hard to read if you're unexperienced). I don't remember if I was running w2003 as 64-bit or 32-bit VM, can be either. This VM was installed as a fresh installation, not an upgrade.

Once more - thanks a lot.

Re the assertion error, I'm reminded by another post that a likely user of VT-x on Linux hosts is KVM, if you have that module in your kernel.