maintainer-feedback requested: [Bug 238463] emulators/virtualbox-ose Fatal trap 12

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Bugzilla Automation <bugzilla at FreeBSD.org> has asked vbox at FreeBSD.org for
maintainer-feedback:
Bug 238463: emulators/virtualbox-ose Fatal trap 12
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238463



--- Description ---
Overview: Fatal trap 12 and therefore kernel panic with hard reboots when
powering on any VM using VirtualBox OSE

Steps to Reproduce:

% uname -a
FreeBSD fbsd.gf4 12.0-RELEASE-p5 FreeBSD 12.0-RELEASE-p5 GENERIC  i386

% pkg info -x virtualbox
virtualbox-ose-5.2.26_3
virtualbox-ose-kmod-5.2.26

% virtualbox

Then create a virtual machine with any configuration (I even trying to create a
VM absolutely with no features) and start it. The VM is attached. No logs of
VBox are found in  the appropriate files.

Actual Results: hard reboot.
savecored vmcore.2 is available in my OneDrive (>195M) -
https://1drv.ms/u/s!ArE46lxEOnviizNQfyJvEuOdes0z?e=sNchgj.

Unlike bug #181818, the kernel panics when starting the VM, not the VirtualBox
manager.

Expected Results: VM started. I have had to use VirtualBox very actively on the
same PC (unchanged, except PSU) from two to four years ago.

coreinfo wasn't worked out:

cat -n /var/crash/core.txt.2 
     1	BFD: /boot/kernel/kernel: invalid relocation type 42
     2	BFD: /boot/kernel/kernel: invalid relocation type 42
     3	BFD: /boot/kernel/kernel: invalid relocation type 42
     4	/dev/stdin:1: Error in sourced command file:
     5	Cannot access memory at address 0x65657246
     6	BFD: /boot/kernel/kernel: invalid relocation type 42
     7	BFD: /boot/kernel/kernel: invalid relocation type 42
     8	BFD: /boot/kernel/kernel: invalid relocation type 42
     9	/dev/stdin:1: Error in sourced command file:
    10	Cannot access memory at address 0x65657246
    11	BFD: /boot/kernel.old1/kernel: invalid relocation type 42
    12	BFD: /boot/kernel.old1/kernel: invalid relocation type 42
    13	BFD: /boot/kernel.old1/kernel: invalid relocation type 42
    14	/dev/stdin:1: Error in sourced command file:
    15	Cannot access memory at address 0x65657246
    16	Unable to find matching kernel for /var/crash/vmcore.2

I already tried to load/unload vboxdrv and vboxnet.

Speculation possible, but it may be related with the fact that my videocard has
been moved to supporting via legacy nvidia-340 driver (this is not correlated
with the official nvidia information at the site, but I having a lot of
troubles to set my card working). My box is from year 2012 (quite old as you
can see).