kpanic on install >32GB of RAM [SEC=UNCLASSIFIED]

[Sean Bruno]

On Thu, 2010-10-21 at 12:06 -0700, Kostik Belousov wrote:
> On Thu, Oct 21, 2010 at 09:50:03AM -0700, Sean Bruno wrote:
> > On Thu, 2010-10-21 at 05:48 -0700, Andriy Gapon wrote:
> > > on 20/10/2010 21:28 Sean Bruno said the following:
> > > > I guess, I could replace the kernel on the CD and have them reburn it?
> > > 
> > > That should work.
> > > BTW, here I described "yet another" way of building custom recovery/installation
> > > CDs that I use:
> > > http://wiki.freebsd.org/AvgLiveCD
> > > 
> > 
> > Before I get started on this, it looks like something else is going on.
> > 
> > Here is a panic + trace on the latest 9-current snap shot.  "hammer
> > time" indeed.  
> > 
> > Suggestions are welcome!
> > 
> > 
> > http://people.freebsd.org/~sbruno/9-current-panic.png
> > 
> > http://people.freebsd.org/~sbruno/9-current-trace-panic.png
> 
> It feels like msgbufp variable has absurd value. Can you arrange
> to get the output of verbose boot, esp. the SMAP lines ?
> Also, you could add printfs near amd64/amd64/machdep.c:1517
> 	/* Map the message buffer. */
> 	msgbufp = (struct msgbuf *)PHYS_TO_DMAP(phys_avail[pa_indx]);
> to show the values of all participants, i.e. msgbufp, pa_indx
> and phys_avail[pa_indx].


I've been trying to anything useful after the SMAP printed out, and have
failed.  I assume that because of the place where the system is throwing
a panic.  

Here is the SMAP output, I had to capture it twice to get it all on the
screen.  

http://people.freebsd.org/~sbruno/smap1.png

http://people.freebsd.org/~sbruno/smap2.png

Immediately after, it jumps into the panic.  I assume that this means
more to you folks than it means to me.  I'm still working on the printf.

sean