I just built 4 new machines all with Intel Providence motherboards and
128MB, and 2 of them with triple striped Seagate Cheetah U/W disks. They
seem to be running fine, except that one of the machines with disks is
panicking about once a day in pmap_enter in the following place:

	/*
	 * Page Directory table entry not valid, we need a new PT page
	 */
	pte = pmap_pte(pmap, va);
	if (!pte)
		panic("ptdi %x", pmap->pm_pdir[PTDPTDI]);

This machine is running the same kernel as the other machine with disk,
and both are seeing about the same amount of use.

Has anyone seen this problem before? If so, is there something I can
tune up to get rid of it? I've included the kernel config below for
perusal.

Also, how do I feed the kernel dump that was collected into gdb? It
isn't recognized as a coredump file.

P.S. - please Cc me in any responses - usually I read the NetBSD mailing
lists from a mail->news gateway, and that news server has been down for
the last week.

***********************************************************************

#	$NetBSD: GENERIC,v 1.48 1996/05/20 18:17:23 mrg Exp $
#
#

machine		i386		# architecture, used by config; REQUIRED

#options		I386_CPU	# CPU classes; at least one is REQUIRED
#options		I486_CPU
options		I586_CPU
options		MATH_EMULATE	# floating point emulation
options		VM86		# Virtual 8086 emulation

options		AHC_TAGENABLE	# for better 2940UW performance

# uncomment following one line for large memory configurations
options		"NMBCLUSTERS=1536"

# the following two lines are to give us a 12MB disk cache
options		"NBUF=4096"
options		"BUFPAGES=4096"

##options		"MAXSLP=200"

options		DFLDSIZ=67108864  # initial data size limit

# Some BIOSes don't get the size of extended memory right.  If you
# have a broken BIOS, uncomment the following and set the value
# properly for your system.
#options	EXTMEM_SIZE=...	# size of extended memory
options	EXTMEM_SIZE=130048	# size of extended memory

options	DUMMY_NOPS	# speed hack; recommended
options		XSERVER,UCONSOLE
#options	INSECURE	# insecure; allow /dev/mem writing for X
options		MACHINE_NONCONTIG

maxusers	64		# estimated number of users
options		TIMEZONE=0	# time zone to adjust RTC time by
options		DST=0		# daylight savings time used by RTC

options		SWAPPAGER	# paging; REQUIRED
options		VNODEPAGER	# mmap() of files
options		DEVPAGER	# mmap() of devices

#options		DDB		# in-kernel debugger
#makeoptions	DEBUG="-g"	# compile full symbol table
options		DIAGNOSTIC	# internal consistency checks
options		KTRACE		# system call tracing, a la ktrace(1)

options		SYSVMSG		# System V-like message queues
options		SYSVSEM		# System V-like semaphores
options		SYSVSHM		# System V-like memory sharing
options		SHMMAXPGS=1024	# 1024 pages is the default

options		COMPAT_NOMID	# compatibility with 386BSD, BSDI, NetBSD 0.8,
#options		COMPAT_09	# NetBSD 0.9,
#options		COMPAT_10	# NetBSD 1.0,
options		COMPAT_11	# NetBSD 1.1,
options		COMPAT_43	# and 4.3BSD
#options		TCP_COMPAT_42	# TCP bug compatibility with 4.2BSD

#options		COMPAT_SVR4	# binary compatibility with SVR4
options		COMPAT_IBCS2	# binary compatibility with SCO and ISC
options		COMPAT_LINUX	# binary compatibility with Linux
options		COMPAT_FREEBSD	# binary compatibility with FreeBSD

options		USER_LDT	# user-settable LDT; used by WINE
options		LKM		# loadable kernel modules

options		FFS		# UFS
options		QUOTA		# UFS quotas
options		LFS		# log-structured file system
options		MFS		# memory file system

options		NFSCLIENT	# Network File System client
options		NFSSERVER	# Network File System server

options		CD9660		# ISO 9660 + Rock Ridge file system
options		MSDOSFS		# MS-DOS file system
options		FDESC		# /dev/fd
options		FIFO		# FIFOs; RECOMMENDED
options		KERNFS		# /kern
options		NULLFS		# loopback file system
options		PORTAL		# portal filesystem (still experimental)
options		PROCFS		# /proc
options		UMAPFS		# NULLFS + uid and gid remapping
options		UNION		# union file system

options		GATEWAY		# packet forwarding
options		INET		# IP + ICMP + TCP + UDP
#options		NS		# XNS
#options		ISO,TPIP	# OSI
#options		EON		# OSI tunneling over IP
#options		CCITT,LLC,HDLC	# X.25
#options		IPFILTER	# IP packet filter for security

#config		netbsd	swap generic
#options		GENERIC

config		netbsd	root on wd0a swap on sd0b and sd1b and sd2b and wd0b

mainbus0 at root

isa0	at mainbus0
eisa0	at mainbus0
pci0	at mainbus0 bus ?

ppb*	at pci? dev ? function ?	# PCI-PCI bridges
pci*	at ppb? bus ?

npx0	at isa? port 0xf0 irq 13	# math coprocessor

#pc0	at isa? port 0x60 irq 1		# generic PC console device
vt0	at isa? port 0x60 irq 1

com0	at isa? port 0x3f8 irq 4	# standard PC serial ports
com1	at isa? port 0x2f8 irq 3
com2	at isa? port 0x3e8 irq 5
#com3	at isa? port 0x2e8 irq 9
#ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
#com*	at ast? slave ?
#boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
#com*	at boca? slave ?
#rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
#com*	at rtfps? slave ?

#cy0	at isa? ...

lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
lpt1	at isa? port 0x278
lpt2	at isa? port 0x3bc

lms0	at isa? port 0x23c irq 5	# Logitech bus mouse
lms1	at isa? port 0x238 irq 5
mms0	at isa? port 0x23c irq 5	# Microsoft InPort mouse
mms1	at isa? port 0x238 irq 5
#pms0	at pckbd? irq 12		# PS/2 auxiliary port mouse

#aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI controllers
#aha1	at isa? port 0x334 irq ? drq ?	# Adaptec 154[02] SCSI controllers
#scsibus* at aha?
#ahb*	at eisa? slot ?			# Adaptec 174[024] SCSI controllers
#scsibus* at ahb?
ahc*	at eisa? slot ?			# Adaptec 284x SCSI controllers
ahc*	at pci? dev ? function ?	# Adaptec 2940 SCSI controllers
scsibus* at ahc?
#aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI controllers
#scsibus* at aic?
#bt0	at isa? port 0x330 irq ? drq ?	# BusLogic [57]4X SCSI controllers
#bt1	at isa? port 0x334 irq ? drq ?	# BusLogic [57]4X SCSI controllers
#bt2	at isa? port ? irq ?
#scsibus* at bt?
#ncr*	at pci? dev ? function ?	# NCR 538XX SCSI controllers
#scsibus* at ncr?
#sea0	at isa? iomem 0xc8000 irq 5
#scsibus* at sea?
#uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI controllers
#uha1	at isa? port 0x334 irq ? drq ?	# UltraStor [13]4f SCSI controllers
#uha2	at isa? port ? irq ?		# UltraStor 24f SCSI controllers
#scsibus* at uha?
#wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
#wds1	at isa? port 0x358 irq 11 drq 5
#scsibus* at wds?

sd*	at scsibus? target ? lun ?	# SCSI disk drives
st*	at scsibus? target ? lun ?	# SCSI tape drives
cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
ch*	at scsibus? target ? lun ?	# SCSI autochangers

fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
#fdc1	at isa? port 0x370 irq ? drq ?
fd*	at fdc? drive ?

#mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives

wdc0	at isa? port 0x1f0 irq 14	# ST506, ESDI, and IDE controllers
#wdc1	at isa? port 0x170 irq ?
wd*	at wdc? drive ?

wt0	at isa? port 0x300 irq 5 drq 1	# Archive and Wangtek QIC tape drives

ed0	at isa? port 0x300 iomem 0xd0000 irq 10	# WD/SMC, 3C503, and NE[12]000
ed1	at isa? port 0x320 iomem 0xd8000 irq 11 #   ethernet cards
ed2	at isa? port 0x340 iomem 0xcc000 irq 12
#eg0	at isa? ...				# 3C505 ethernet cards
#el0	at isa? port 0x300 irq 9		# 3C501 ethernet cards
ep0	at isa? port ? irq ?			# 3C509 ethernet cards
#ie0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN and 3C507
ie1	at isa? port 0x300 irq 10		# EtherExpress
#le0	at isa? port 0x320 irq 10 drq 7		# IsoLan, NE2100, and DEPCA
ep*	at eisa? slot ?				# 3C579 ethernet cards
fea*	at eisa? slot ?				# DEC DEFEA FDDI cards
le*	at pci? dev ? function ?		# PCnet-PCI based ethernet cards
de*	at pci? dev ? function ?		# DC21X4X-based ethernet cards
ep*	at pci? dev ? function ?		# 3C590 ethernet cards
fpa*	at pci? dev ? function ?		# DEC DEFPA FDDI cards

#pss0	at isa? port 0x220 irq 7 drq 6  # Personal Sound System
#sp0	at pss0 port 0x530 irq 10 drq 0	# 	sound port driver

#sb0	at isa? port 0x220 irq 7 drq 1	# SoundBlaster
#wss0	at isa? port 0x530 irq 10 drq 0	# Windows Sound System
#pas0	at isa? port 0x220 irq 7 drq 1	# ProAudio Spectrum
#gus0	at isa? port 0x220 irq 7 drq 1 flags 6 # Gravis Ultra Sound (flags is record drq for full-duplex)
spkr0	at pckbd? port 0x61

# Joystick driver. Probe is a little strange; add only if you have one.
#joy0	at isa? port 0x201

pseudo-device	loop	1		# network loopback
pseudo-device	bpfilter 16		# packet filter
#pseudo-device	sl	2		# CSLIP
#pseudo-device	ppp	2		# PPP
pseudo-device	tun	2		# network tunneling over tty

pseudo-device	pty	128		# pseudo-terminals
pseudo-device	tb	1		# tablet line discipline
pseudo-device	vnd	4		# paging to files
pseudo-device	ccd	8		# concatenated disk devices