Panic on 11.0-CURRENT when trying "kldload vmm"

[Neel Natu]

Hi Markiyan,

On Thu, Apr 16, 2015 at 1:01 PM, Markiyan Kushnir
<markiyan.kushnir at gmail.com> wrote:
> 22:13:~$ uname -a
> FreeBSD mkushnir.mooo.com 11.0-CURRENT FreeBSD 11.0-CURRENT #3
> r281432: Sun Apr 12 01:35:34 EEST 2015
> root@:/work/obj/work/src.svn/sys/MAREK  amd64
>
>
> Went kernel panic twice today when trying to load vmm.  Never seen
> this before (the previous kernel was built out of r278973, Feb 19
> 2015, was doing well).  The panic is not reliable in the sense I could
> not reproduce it at will just loading/unloading vmm.
>
> I regularly work in my bhyve guests, sometimes swap between vmm and
> vboxdrv, all my scenarios haven't changed from the previous Feb
> kernel.  Except that I re-built my today panicking kernel extending
> the MINIMAL config (including what I need) as opposed to the previous
> one "reducing" GENERIC (excluding what I don't need).
>
> Both today panic's back traces look identical. Attaching core.txt.1
> (the latter one) and the output of "sysctl kern.conftxt". Let me know
> if someone wants to debug it.
>

I don't think that 'core.txt.1' made it through.

Regardless, can you try to reproduce after applying r281559. I think
it should fix the panic.

https://svnweb.freebsd.org/changeset/base/281559

best
Neel

> Thanks,
> Markiyan.
>
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