kldload dtraceall exec format error

[Charlie Martin]

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.

-- 

Charles R. (Charlie) Martin
Senior Software Engineer
SGI logo
1900 Pike Road
Longmont, CO 80501
Phone: 303-532-0209
E-Mail: CRMartin at sgi.com <mailto:CRMartin at sgi.com>
Website: www.sgi.com <http://www.sgi.com>