Problem with dtrace

[Dan Nelson]

In the last episode (Sep 20), Michel Talon said:
> Still testing FreeBSD-7.1-beta encountered the following (perhaps
> to be expected) result with dtrace:
> 
> dtrace -m kernel  -> some output -> deadlock after a few seconds.
> 
> Less demanding tracing worked OK.

proc, profile, and syscall probes work fine for me; it seems to be just
fbt probes that cause problems.  Enabling any one will cause a trap 12
a few instructions inside the probed function when it gets called.

-- 
	Dan Nelson
	dnelson at allantgroup.com