Kernel hang with latest snapshot

[David Boreham <david_list at boreham dot org>]

Hi, I'm interested in using LKET to analyse the behavior of a large
application that has disk i/o-bound performance. My top level goal
is to be able to record system-wide traces of all i/o activity at a
system call level (open,close,write,fsync etc). I am using Fedora Core 5
(although if it would help I'd be happy to use any distribution/custom 
kernel).

The systemtap that comes with the FC5 distribution is too old to
include LKET. The LKET from the latest systemtap snapshot
(20061007) does not work with the systemtap binary in the distribution.

So I removed the distribution systemtap, installed the dependencies
and built/installed the latest snapshot systemtap.

So far so good.

Unfortunately when I try to use LKET it would appear that my
kernel hangs (machine totally unresponsive after the kernel module
is loaded).

This is the command line I'm using :

/usr/local/bin/stap -e "probe addevent.iosyscall.flock.* {}" -bM -vv -k

(btw addevent.iosyscall.* produces C code that will not compile)

It gets this far and then hangs:

 ld -m elf_i386 -m elf_i386 -r -o /tmp/stapA607FG/stap_3312.ko 
/tmp/stapA607FG/stap_3312.o /tmp/stapA607FG/stap_3312.mod.o
make: Leaving directory `/usr/src/kernels/2.6.17-1.2187_FC5-i686'
Pass 4: compiled C into "stap_3312.ko" in 23930usr/2630sys/28585real ms.
Pass 5: starting run.
Running sudo /usr/local/bin/staprun -u root -d 3312 
/tmp/stapA607FG/stap_3312.ko

I'm using this kernel : 2.6.17-1.2187_FC5 (i386/i686) and vmware.

Any advice on how to proceed is most welcome.

Thanks for your time.