maintainer-feedback requested: [Bug 233540] emulators/virtualbox-ose panic on 12.0 PRERELEASE

[bugzilla-noreply at freebsd.org]

Bugzilla Automation <bugzilla at FreeBSD.org> has asked vbox at FreeBSD.org for
maintainer-feedback:
Bug 233540: emulators/virtualbox-ose panic on 12.0 PRERELEASE
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233540



--- Description ---
I'm opening a new PR since I'm not sure, if my problem is related to
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230460 or not (seems to me as
if it isn't). I get an instant kernel panic when I start vboxwebsrv or a VM on
a 12.0 PRERELEASE system:

/var/crash# uname -a
FreeBSD Server 12.0-PRERELEASE FreeBSD 12.0-PRERELEASE #2 r328635M: Fri Nov 23
14:32:30 UTC 2018     root at Server:/usr/obj/usr/src/amd64.amd64/sys/GENERIC 
amd64

Virtualbox has been rebuilt:

/var/crash#  pkg info -f virtualbox-ose\* | egrep "^Name|^Installed"
Name	       : virtualbox-ose
Installed on   : Sat Nov 24 10:05:11 2018 UTC
Name	       : virtualbox-ose-kmod
Installed on   : Sat Nov 24 10:05:08 2018 UTC

r482464 (see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230460) is
installed

/usr/ports/emulators/virtualbox-ose/files# ll
patch-src-VBox-HostDrivers-VBoxNetFlt-freebsd-files_vboxnetflt
-rw-r--r--  1 root  wheel   638B Oct 20 04:42
patch-src-VBox-HostDrivers-VBoxNetFlt-freebsd-files_vboxnetflt

I even disabled SMAP

/var/crash# cat /boot/loader.conf | grep hw.cpu_stdext_disable
hw.cpu_stdext_disable=0x00100000

Still, the system crashes instantly:

/var/crash# less core.txt.3
Server dumped core - see /var/crash/vmcore.3

Sun Nov 25 18:01:56 UTC 2018

FreeBSD Server 12.0-PRERELEASE FreeBSD 12.0-PRERELEASE #2 r328635M: Fri Nov 23
14:32:30 UTC 2018     root at Server:/usr/obj/usr/src/amd64.amd64/sys/GENERIC 
amd64

panic: page fault

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Unread portion of the kernel message buffer:


Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 02
fault virtual address	= 0x28
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff80c9a34d
stack pointer		= 0x28:0xfffffe00591306b0
frame pointer		= 0x28:0xfffffe00591306e0
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 	= 64337 (VBoxNetAdpCtl)
trap number		= 12
panic: page fault
cpuid = 1
time = 1543168840
KDB: stack backtrace:
#0 0xffffffff80bed147 at kdb_backtrace+0x67
#1 0xffffffff80ba1253 at vpanic+0x1a3
#2 0xffffffff80ba10a3 at panic+0x43
#3 0xffffffff810793ff at trap_fatal+0x35f
#4 0xffffffff81079459 at trap_pfault+0x49
#5 0xffffffff81078a7e at trap+0x29e
#6 0xffffffff810549f5 at calltrap+0x8
#7 0xffffffff82cd902a at vboxNetAdpOsCreate+0x1a
#8 0xffffffff82cd964c at vboxNetAdpCreate+0xcc
#9 0xffffffff82cd9526 at VBoxNetAdpFreeBSDCtrlioctl+0x86
#10 0xffffffff80a583bd at devfs_ioctl+0xad
#11 0xffffffff811ffa6e at VOP_IOCTL_APV+0x7e
#12 0xffffffff80c7f3c4 at vn_ioctl+0x1a4
#13 0xffffffff80a5899f at devfs_ioctl_f+0x1f
#14 0xffffffff80c0a64d at kern_ioctl+0x26d
#15 0xffffffff80c0a36e at sys_ioctl+0x15e
#16 0xffffffff81079f92 at amd64_syscall+0x352
#17 0xffffffff810552dd at fast_syscall_common+0x101
Uptime: 1d6h15m53s

Any ideas?