Maybe this will help someone track down some ugly bug....

NetBSD-current/i386, sources, libs and binaries from April 12.
Computer: Intel 486DX2-66, single IDE drive.  Config below.

Dumped into DDB, with kernel vm_fault:

Approx. trace:

_vcount		+ 0x22 movl 0(%eax), %eax	#eax == 0
_cnclose	+ 0x58
_spec_close
_ufsspec_close
_vn_close
_vn_closefile
_closef
_close
_syscall(6)

ps also showed that cron had just fired off a shell that had fired off
newsyslog, probably the last thing that happened before it died its horrible
death.

					-jarle
----
May your system panic and your superblock become corrupted for your blasphemy! 

/sys/arch/i386/conf/DARLING:
#
# DARLING - from GENERICAHA
#

machine		"i386"
cpu		"I486_CPU"
ident		DARLING
timezone	-1 dst 4
maxusers	12
maxfdescs	2048
options		INET
#options		MULTICAST
options		XSERVER,UCONSOLE
options		DEVPAGER,VNODEPAGER,SWAPPAGER
options		FFS
options		MSDOSFS
options		KERNFS
options		KTRACE
options		FIFO
options		MFS
options		FDESC
options		NFSCLIENT
options		NFSSERVER
options		"COMPAT_NOMID"
options		DDB
options		"MACHINE_NONCONTIG"
options		"USER_LDT"
options		"COMPAT_43"
options		"TCP_COMPAT_42"
#options		"COMPAT_OLDSOCKOPT"

config		netbsd	root on wd0 swap on wd0 at 0xfe100000

controller	isa0
controller	wdc0	at isa? port "IO_WD1" bio irq 14 vector wdintr
disk		wd0	at wdc0 drive 0
#disk		wd1	at wdc0 drive 1

controller	fdc0	at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk		fd0	at fdc0 drive 0
#disk		fd1	at fdc0 drive 1

device		pc0	at isa? port "IO_KBD" tty irq 1 vector pcrint
device		npx0	at isa? port "IO_NPX" irq 13 vector npxintr
device		com0	at isa? port "IO_COM1" tty irq 4 vector comintr
device		com1	at isa? port "IO_COM2" tty irq 3 vector comintr

#device		lpt0	at isa? port "IO_LPT3" tty irq 7 vector lptintr
#device		lpa0	at isa? port "IO_LPT1" tty
#device		lpa1	at isa? port "IO_LPT2" tty

# bus mouse
#device          pms0    at isa? port "IO_KBD" tty irq 12 vector pmsintr

# Ethernet driver
device 		ed0	at isa? port 0x280 net irq 9 iomem 0xd0000 vector edintr

pseudo-device	ether
pseudo-device	log
pseudo-device	loop
pseudo-device	pty	32
pseudo-device	sl	1
pseudo-device	ppp
pseudo-device	speaker
#pseudo-device	spkr
pseudo-device	bpfilter 4


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