kldload dtraceall exec format error

[Garrett Cooper]

On Thu, Sep 1, 2011 at 9:56 AM, Charlie Martin <crmartin at sgi.com> wrote:
> Okay, I'll grant this is probably a horrid noob question, but then on the
> Free kernel I'm a horrid noob so I guess it makes sense.  This is for
> FreeBSD
>
> FreeBSD psmdev1 8.1-RELEASE-p2 FreeBSD 8.1-RELEASE-p2
>
> per uname -a.
>
> We have a FreeBSD based product on the AMD64 architecture; I'm trying to
> enable DTrace.  The file amd64/conf/GENERIC with which the kernel was
> compiled has the required lines
>
> options     KDTRACE_FRAME        # Ensure frames are compiled in
> options     KDTRACE_HOOKS        # Kernel DTrace hooks
> options     DDB_CTF                 # for DTrace
>
> but when I try kldload dtraceall I get
>
> kldload: can't load dtraceall: Exec format error
>
> From Google I get that this probably means some mismatch in compiles, but
> I'm unclear what to look for.  Also, another big part of the product,
> compiled from the same master Makefile, *does* have dtrace enabled
> successfully.
>
> Hints, suggestions, and pointers to documentation gleefully accepted.

What does dmesg say?
Thanks,
-Garrett