>> 	I experience this as well on i386.  Call tree is almost random (not
>> 	because of uninitialized poitner access or something) so I think
>> 	there's some problem in vm/uvm code.
>I met (maybe) the same problem, and reverting sys/uvm/uvm_fault.c to,
>	Date: Sat, 10 Jul 1999 06:39:32 -0700 (PDT)
>version seems to fix this problem.

	I used uvm/uvm_fault.c 1.40, which has the following line at the top:
/*      $NetBSD: uvm_fault.c,v 1.40 1999/07/08 18:11:03 thorpej Exp $   */
	and it seem to fix the problem.  Thanks for the tip.

itojun