This panic is with: # uname -a FreeBSD c720-r368166 13.0-CURRENT FreeBSD 13.0-CURRENT #23 r368166M: Thu Dec 17 13:12:37 CET 2020 guru@c720-r368166:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64 and ports from head of November 30. # pkg info | grep virtualbox virtualbox-ose-5.2.44_4 General-purpose full virtualizer for x86 hardware virtualbox-ose-kmod-5.2.44_3 VirtualBox kernel module for FreeBSD # kldstat | grep vbox 10 1 0xffffffff82288000 8abf0 vboxdrv.ko The host panics when the VM boots from the ISO image of the guest, tested with an ISO of Ubuntu 20.04LTS and Windows10. With Ubuntu there is already its plash screen and Ubuntu is checking the ISO. The panic screen is here http://www.unixarea.de/fbsd-panic-20210110.jpg
(In reply to Matthias Apitz from comment #0) Try to update virtualbox-ose-kmod to 5.2.44_4: https://svnweb.freebsd.org/ports?view=revision&revision=560502
I updated to: $ pkg info virtualbox* virtualbox-ose-5.2.44_4 virtualbox-ose-kmod-5.2.44_4 and rebooted. The panic remains
last night I updated to: root@c720-r368166:/usr/ports/emulators # svn up virtualbox-ose virtualbox-ose-kmod Updating 'virtualbox-ose': At revision 561552. Updating 'virtualbox-ose-kmod': At revision 561552. Summary of updates: Updated 'virtualbox-ose' to r561552. Updated 'virtualbox-ose-kmod' to r561552. and compiled and installed both. Then I booted only Xorg-twm-xterm to launch VirtualBox and was able to boot Ubuntu fine in the VM. When I have up Xorg-KDE5-plasma it crashes while booting any guest. Could this be a memory problem? The host has 2 GByte RAM and to the VM 1024 MB is configured. It crashes also with 512 MB The red in the VM is set to NAT.
Created attachment 221564 [details] screen of the stack trace of the panic
Reproducible with virtualbox-ose-6.1.36_1?