It's been pointed out my trap report was inadequate (Thanks Jonathan Gray).
I have reproduced the problem. Here is a better report (typed in by hand,
since I haven't figured out this modern all-USB mboard with no regular
comm port).
/bsd single kernel traps on my box during 'make obj' in /usr/src:
((
OpenBSD 4.0 (GENERIC) #1104: Fri Sep 1 11:54:27 MDT 2006
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
))
...
[ Last time it happened at ===> sbin/restore .. this time ]
[ at ==> /usr/sbin/ypserve/mknetid ]
uvm_fault(0xd073ff00, 0xd2000000, 0, 3) -> e
kernel: page fault trap, code=0
Stopped at: uvm_pagealloc_strat+0x155: movl %eax,0x4(%ecx)
ddb> ps
PID PPID PGRP UID S FLAGS WAIT COMMAND
*17788 5392 14645 0 7 0x4006 make
5392 8533 14645 0 3 0x86 pause sh
8533 30238 14645 0 3 0x4086 pause sh
30238 1844 14645 0 3 0x4086 wait make
1844 7917 14645 0 3 0x86 pause sh
7917 30539 14645 0 3 0x4086 pause sh
30539 20299 14645 0 3 0x4086 wait make
20372 14645 14645 0 3 0x4086 pause sh
14645 19375 14645 0 3 0x4086 wait make
19375 1671 19375 0 3 0x4086 pause ksh
23957 1 23957 0 3 0x4086 ttyin getty
31189 1 31189 0 3 0x4086 ttyin getty
17575 1 17575 0 3 0x4086 ttyin getty
31000 1 31000 0 3 0x4086 ttyin getty
1671 1 1671 1000 3 0x4086 pause ksh
29412 1 29412 0 3 0x84 select cron
3834 1 3834 0 3 0x40184 select sendmail
12364 1 12364 0 3 0x84 select sshd
7484 1 7484 0 3 0x184 select inetd
937 19045 19045 73 2 0x184 syslogd
19045 1 19045 0 3 0x8c netio syslogd
19 0 0 0 3 0x100204 crypto_wa crypto
18 0 0 0 3 0x100204 aiodoned aiodoned
17 0 0 0 3 0x100204 syncer update
16 0 0 0 3 0x100204 cleaner cleaner
15 0 0 0 3 0x100204 reaper reaper
14 0 0 0 3 0x100204 pgdaemon pagedaemon
13 0 0 0 3 0x100204 pftm pfpurge
12 0 0 0 3 0x100204 wait wskbd_hotkey
11 0 0 0 3 0x100204 usbevt usb6
10 0 0 0 3 0x100204 usbevt usb5
9 0 0 0 3 0x100204 usbevt usb4
8 0 0 0 3 0x100204 usbevt usb3
7 0 0 0 3 0x100204 usbevt usb2
6 0 0 0 3 0x100204 usbevt usb1
5 0 0 0 3 0x100204 usbtsk usbtask
4 0 0 0 3 0x100204 usbevt usb0
3 0 0 0 3 0x100204 apmev apm0
2 0 0 0 3 0x100204 kmalloc kthread
1 0 1 0 3 0x4084 wait init
0 -1 0 0 3 0x80204 scheduler swapper
ddb> trace
uvm_pagealloc_strat(0,0,0,ec6cacc0,2,0,0,1) at uvm_pagealloc_strat+0x155
uvm_fault(da435374,851a3000,0,3,0) at uvm_fault+0x946
trap() at trap+0x255
--- trap (number 6) ----
0x1bb18e3:
ddb>
--
Jack J. Woehr # "Men never do evil so completely and
PO Box 51, Golden, CO 80402 # cheerfully as when they do it from
http://www.well.com/~jax # religious conviction." - Pascal