Frequent panics on Mac OS X when shutting down/starting VMs.

[jglogan]

After the 4.1.4 upgrade, I've seen frequent system panics around VM startup/shutdown time. I'm running

Details, including multiple crash dump summaries, are in ​https://forums.virtualbox.org/viewtopic.php?f=8&t=45387. Others in the thread have reported the issue on OS X 10.7 also.

[jglogan]

Latest crash report file.

[Frank Mehnert]

So your problems started after the upgrade to VBox 4.1.4 (not 4.1.6), is that correct?

[jglogan]

Yes, that is true. The problem became noticeably frequent after my 4.1.4 upgrade, and upgrading to 4.1.6 did not seem to impact the frequency one way or the other.

[jglogan]

Occurred again just after shutdown of 10.04LTS VM, attaching another panic file.

[jglogan]

Panic occurred about 5-10 sec after VM transitioned to stopped state in VirtualBox Manager.

[jglogan]

One thing I'm noticing is that I'm not seeing the panic if I only have one virtual machine running and I shut it down, start it up, shut it down, and so on. It only seems to occur if I have two or more VMs running and I shut one down.

[jglogan]

Another post-shutdown panic.

[jglogan]

Additional comments on the forum thread indicate that the issue might present itself only when installed RAM > 4GB.

[Scott Heffner]

I am having the same issue with 4.1.4, running on an Xserve with 12 GB of RAM, 10.6.8. I have two VMs, one Linux and the other Windows Server 2003. The kernel panic occurs when I shut one of the VMs down while the other is running. The problem does not occur when I restart a VM.

[Scott Heffner]

Kernel Panic after shutting down Windows 2003 VM

[jglogan]

Panic on 12/12.

[jglogan]

Hooray...two panics in one hour!

[jglogan]

Switched to Ubuntu 11.10 guest, panic still happening.

[roamdad]

Mac OS X V10.7.2, 8GB 1333 Mhz Core I7. Original VBox 4.1.6 install and migrating from vmware. After 6 panics while migrating 32 and 64 bit guest VMs, downgraded to 4.0.14 r74382 suggested in other kernel panic threads. Rock steady in 4.0.14. Tried eliminating dual guest cpu and IO APIC, but still kernel panics. Last 3 panics were definitely on shutdown of guest machines.

[roamdad]

Panic dump with VirtualBox as last thread

[jglogan]

Crash occurred with 4.1.8.

[Hank Roberts]

See also: https://www.virtualbox.org/ticket/9359 (same issue) and: ​System instability - OS X kernel panics - with 4.1.4?

Seems pretty clear the problem started after 4.0.14 and persists for some of us. VBox 4.1.x through the current one More than one VM open Panic when one closes Not reproducible or consistent from what's in the blog post reports.

[jglogan]

Another 4.1.8 crash

[jglogan]

4.1.8 crash

[jglogan]

Another 4.1.8 crash :|

[skoczko]

Kernel panic log

[skoczko]

Same situation here - kernel panic when shutting down debian6 or centos5 VMs. Kernel panic log attached.

virtualbox 4.1.8 OS X 10.6.8

[jglogan]

One thing that I have noticed is that if I run two Ubuntu 11.10 VMs concurrently, one 1GB and one 512MB, I have yet to see the problem.

When I have seen the problem in the past, it is when I am running my dev VM (Ubuntu 11.10, 3GB base memory) and a 1GB Ubuntu 11.10 test VM.

This smells like a page table issue; wonder if there's a 32bit-ism somewhere that's causing this.

[jglogan]

4.1.8 crash, shutting down 512MB VM while running 1GB VM

[jglogan]

Another crash.

[jglogan]

Crash on shutdown of VM with no other VMs running.

[Tino Wu]

Same here for VirtualBox 4.1.10 on OS X 10.7.3.

[Frank Mehnert]

Still no clue. It could be also related to 3D acceleration so it would be interesting if this host panics occur with disabled 3D (in VM settings) as well. And we are also interested in getting more crash logs, if possible for VirtualBox 4.1.10.