freebsd stable - Jul 2017 - [SOLVED] Re: Panic with FreeBSD 11.0-RC2 VM-IMAGE when starting vboxservice

On Mon, Jul 10, 2017 at 09:47:50PM +0200, Jos? G. Juanino
wrote:
> El Monday 10 de July a las 21:24:41 CEST, Jos? G. Juanino escribi?:
> >El Sunday 09 de July a las 23:48:29 CEST, David Boyd escribi?:
> >>With latest VM-IMAGE (vmdk) for 11.1-RC2 system panics.  I
haven't
> >>been able to process the panic completely, but the backtrace looks 
> >>mysteriously similar to those provided with PR219146.
> >>
> >>
> >>Initially, the VM-IMAGE booted just fine.  The VM-IMAGE is then 
> >>configured as a VirtualBox client.  The panic occurs on subsequent 
> >>reboots when attempting to start vboxservice.
> >>
> >>
> >>Additionally, during the custom configuration process, lsof hangs 
> >>for more than 2 minutes each time that it is invoked.
> >>
> >>
> >>Please let me know exactly what information is needed to correct 
> >>this problem.  I will be able to provide that information no later 
> >>than Tuesday morning.
> >>
> >
> >Hi, I am also suffering this panic.
> >
> >I use everyday my Windows 7 host Virtualbox with a FreeBSD guest. I 
> >upgraded from 11.0 -> 11.1-BETA1 -> 11.1-BETA2 -> 11.1-RC1
with no
> >issues.
> >
> >But after to upgrade to 11.1-RC2, the system panics just after to 
> >start vboxservice. I have disabled the service at boot in 
> >/etc/rc.conf, but it does not help: the system crashes just after 
> >"service vboxservice start" command.
> >
> >You can get a full crash dump here:
> >
> >https://pastebin.com/MkxS9GZn
> >
> >At this moment, I am going to rebuild the virtualbox-ose-additions 
> >port (running 11.1-RC2) and I will let you know if there is some 
> >difference.
> 
> I confirm that after rebuild virtualbox-ose-additions port, the panic 
> goes away. Regards.
I suspect that this is a result of r320763. That change removed a field
from struct vm_map_entry, which is embedded in struct vm_map. Virtualbox
does not reference the fields of struct vm_map directly, but it does
call vm_map_pmap(), which is an inline accessor.

On Mon, Jul 10, 2017 at 01:00:05PM -0700, Mark Johnston
wrote:
> I suspect that this is a result of r320763. That change removed a field
> from struct vm_map_entry, which is embedded in struct vm_map. Virtualbox
> does not reference the fields of struct vm_map directly, but it does
> call vm_map_pmap(), which is an inline accessor.
Thank you for noting.  I do not consider vm_map part of the guaranteed
stable KBI, but in this case it is simpler to add padding than to follow
principles.

Fixed in 320889, will ask re for MFS permissions in a day.