virtualbox.org

Since updating to 5.1.26 r117224 yesterday, I've had two crashes.

Both times the guest process crashed, not the VM Manager process. I'm running CentOS in the VM, with a macOS host. The guest is a LAMP server that is typically idle. For both crashes, it was idle in the background when it crashed.

The first time, it crashed shortly after installing 5.1.26 and a couple of minutes after restoring from the saved state prior to updating. I re-launched immediately and had no problems all day (about 8 hours). I left my workstation (and the VM) running over night to find it a crash notice in the morning, with two crash logs both written at 59 minutes after midnight.

Crash logs for the overnight crash are attached, there seems to be no crash on disk for the first crash, however I did skim read it at the time and I think it was the same.

Any suggestions? In order to prevent possible disk corruption on the guest I have downgraded to the previous version, but if needed I can upgrade again and do some testing (with a copy of the VM).

Please post the output of the command:

• kextstat | grep -v com.apple

Also, right-click on the VM in the VirtualBox Manager, select "Show in Finder", ZIP the selected ".vbox" file and attach it to your response.

(note this is after I downgraded to 5.1.24 - presumably those would have all been 5.1.26 when the crash occurred)

abhibeckert wrote:

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com.intel.kext.intelhaxm (6.0.5)

• This is a quite old version of the Intel HAXM virtualization software. This is a piece of software that has had its share of kernel panics in the past. Try to remove it or upgrade it.
• Try to disable the audio in your VM, or change it to IntelHDA, or try the latest test build. There is a problem in 5.1.26 with the AC'97 card.

socratis wrote:

abhibeckert wrote:

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com.intel.kext.intelhaxm (6.0.5)

• This is a quite old version of the Intel HAXM virtualization software. This is a piece of software that has had its share of kernel panics in the past. Try to remove it or upgrade it.

I'm not sure when or why this was installed, but it hasn't been causing any problems in the past – I have never had a kernel panic on this workstation, and I'd prefer not to risk introducing problems by removing or upgrading at this time.

[*]Try to disable the audio in your VM, or change it to IntelHDA, or try the latest test build. There is a problem in 5.1.26 with the AC'97 card.[/list]

Which of these would you prefer I try?

PS: I've had the older 5.1.24 running for 24 hours now with no crashes.

abhibeckert wrote:I'm not sure when or why this was installed, but it hasn't been causing any problems in the past – I have never had a kernel panic on this workstation, and I'd prefer not to risk introducing problems by removing or upgrading at this time.

If you don't know when a particular piece of software was installed, especially one that's so invasive as a kernel extension that is used for virtualization, you have bigger problems than updating it or removing it.

This is typically installed with things like emulators, mainly the Android emulator. It's a good thing to keep your software up to date, especially when you upgrade your OS (which is what Apple is doing automatically for you).

abhibeckert wrote:Which of these would you prefer I try?

All of them. If you want to keep the audio, upgrade to the latest test build. If you disable the audio and you get no more crashes, stick with that. Whatever works for you...

This problem appears to have been fixed in the latest release – 5.1.28 r117968 (Qt5.6.2)