[Bug 230460] emulators/virtualbox-ose panic on CURRENT

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230460

            Bug ID: 230460
           Summary: emulators/virtualbox-ose panic on CURRENT
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: vbox at FreeBSD.org
          Reporter: danilo at FreeBSD.org
             Flags: maintainer-feedback?(vbox at FreeBSD.org)
          Assignee: vbox at FreeBSD.org

Virtualbox is causing a kernel panic during VM start.

I'm using a recent CURRENT:
$ uname -a
FreeBSD capeta 12.0-CURRENT FreeBSD 12.0-CURRENT #10 r337378M: Mon Aug  6
11:06:26 -03 2018    
danilo at capeta:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG  amd64

I'm not using the binary module, I built it from ports.

The system panics immediately and doesn't drop me to the debugger.

The message is:

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x28
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80c7e806
stack pointer           = 0x28:0xfffffe009c0b84c0
frame pointer           = 0x28:0xfffffe009c0b84f0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 3505 (VBoxNetAdpCtl)

I've built the kernel module with and without VIMAGE to test, same problem.

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