cannot run ztest (zfs test suite) without seeing core dump on 8.2

[Dave Lin]

Hello all, 

	It seems that I cannot run ztest (zfs test suite) without seeing core dump on latest 8.2 release.  Has anyone seen this before and is there way to resolve this issue?  Thanks.

Here's the output capture:

dave-free82# ztest -V	
5 vdevs, 7 datasets, 23 threads, 300 seconds...
child died with signal 11

Here's the uname -a info:

8.2-RELEASE FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64


Sincerely, 
-Dave