Panic on boot during scan with pmspcv

[Garrett Cooper]

> On Sep 1, 2015, at 13:30, Conrad Meyer <cem at FreeBSD.org> wrote:
> 
>> On Mon, Aug 31, 2015 at 6:20 PM, John Baldwin <jhb at freebsd.org> wrote:
>> Probably pCardInfo is NULL.
>> 
>> Looking at the pms driver source is making my stomach churn, but I don't
>> see anything obvious.  The field is set during attach, so it shouldn't be
>> NULL when the intrhook runs.  Do you have any other storage devices on
>> this box?  If so, I would try to kldload the pms driver after you have
>> booted far enough to setup dumps (either that or setup remote kgdb).
> 
> In fact, I don't have any storage devices attached to the PMC
> controller on this box. So it's a pretty low priority for me other
> than not panicing. I've configured the BIOS to legacy boot and the
> issue no longer crops up.
> 
> I just wanted to register the stack and unpleasantness on -CURRENT@ in
> case someone else runs into it too and/or PMC is reading and can
> diagnose/fix it.

If you see something, bug it :)!