Bug 18875

Continually getting page faults followed by system crash (as reported in 18712 which can be abandoned)

A stck crawl of the dumped core reveals the following:

Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0x8
fault code		= supervisor read, page not present
instruction pointer	= 0x8:0xc016f184
stack pointer	        = 0x10:0xc01f59a4
frame pointer	        = 0x10:0xc01f59ac
code segment		= base rx0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= Idle
interrupt mask		= 
trap number		= 12
panic: page fault

syncing disks... 
done
Uptime: 11m56s

dumping to dev #ad/0x20009, offset 174576
dump ata0: resetting devices .. done
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 
---
#0  boot (howto=256) at ../../kern/kern_shutdown.c:304
304			dumppcb.pcb_cr3 = rcr3();
(kgdb) where
#0  boot (howto=256) at ../../kern/kern_shutdown.c:304
#1  0xc0130b3c in poweroff_wait (junk=0xc01ee9ef, howto=0)
    at ../../kern/kern_shutdown.c:554
#2  0xc01cabc5 in trap_fatal (frame=0xc01f5964, eva=8)
    at ../../i386/i386/trap.c:924
#3  0xc01ca89d in trap_pfault (frame=0xc01f5964, usermode=0, eva=8)
    at ../../i386/i386/trap.c:817
#4  0xc01ca467 in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16, 
      tf_edi = -1, tf_esi = 0, tf_ebp = -1071687252, tf_isp = -1071687280, 
      tf_ebx = 0, tf_edx = 40, tf_ecx = 0, tf_eax = -1067277312, 
      tf_trapno = 12, tf_err = 0, tf_eip = -1072238204, tf_cs = 8, 
      tf_eflags = 66118, tf_esp = 0, tf_ss = 0}) at ../../i386/i386/trap.c:423
#5  0xc016f184 in arpintr () at ../../netinet/if_ether.c:447
(kgdb) quit

How-To-Repeat: Machine will crash without warning between 5 mins and 2 hours uptime. Nearly always whilst performing a networking operation. I am using 2x Realtek 8139 Ethernet Cards via an external cable modem. The mbd is a GA586HX. This is the kernel configuration:

machine		i386

cpu		I586_CPU


ident		MANDARK	
maxusers	32

makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols

#options 	MATH_EMULATE		#Support for x87 emulation
options 	INET			#InterNETworking
#options 	INET6			#IPv6 communications protocols
options 	FFS			#Berkeley Fast Filesystem
options 	FFS_ROOT		#FFS usable as root device [keep this!]
options 	MFS			#Memory Filesystem
options 	MD_ROOT			#MD is a potential root device
#options 	NFS			#Network Filesystem
#options 	NFS_ROOT		#NFS usable as root device, NFS required
#options 	MSDOSFS			#MSDOS Filesystem
options 	CD9660			#ISO 9660 Filesystem
options 	CD9660_ROOT		#CD-ROM usable as root, CD9660 required
options 	PROCFS			#Process filesystem
options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
#options 	SCSI_DELAY=15000	#Delay (in ms) before probing SCSI
#options 	UCONSOLE		#Allow users to grab the console
options 	USERCONFIG		#boot -c editor
options 	VISUAL_USERCONFIG	#visual boot -c editor
options 	KTRACE			#ktrace(1) support
options 	SYSVSHM			#SYSV-style shared memory
options 	SYSVMSG			#SYSV-style message queues
options 	SYSVSEM			#SYSV-style semaphores
options 	P1003_1B		#Posix P1003_1B real-time extentions
options 	_KPOSIX_PRIORITY_SCHEDULING
options		ICMP_BANDLIM		#Rate limit bad replies
options		IPFIREWALL
options		IPDIVERT
# To make an SMP kernel, the next two are needed
#options 	SMP			# Symmetric MultiProcessor Kernel
#options 	APIC_IO			# Symmetric (APIC) I/O
# Optionally these may need tweaked, (defaults shown):
#options 	NCPU=2			# number of CPUs
#options 	NBUS=4			# number of busses
#options 	NAPIC=1			# number of IO APICs
#options 	NINTR=24		# number of INTs

device		isa
device		eisa
device		pci

# Floppy drives
device		fdc0	at isa? port IO_FD1 irq 6 drq 2
device		fd0	at fdc0 drive 0
#device		fd1	at fdc0 drive 1

# ATA and ATAPI devices
device		ata
device		atadisk			# ATA disk drives
device		atapicd			# ATAPI CDROM drives
#device		atapifd			# ATAPI floppy drives
#options 	ATA_STATIC_ID		#Static device numbering
#options 	ATA_ENABLE_ATAPI_DMA	#Enable DMA on ATAPI devices

# SCSI Controllers

# SCSI peripherals

# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc0	at isa? port IO_KBD
device		atkbd0	at atkbdc? irq 1
#device		psm0	at atkbdc? irq 12

device		vga0	at isa?

# splash screen/screen saver
pseudo-device	splash

# syscons is the default console driver, resembling an SCO console
device		sc0	at isa?

# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device		vt0	at isa?
#options 	XSERVER			# support for X server on a vt console
#options 	FAT_CURSOR		# start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options 	PCVT_SCANSET=2		# IBM keyboards are non-std

# Floating point support - do not disable.
device		npx0	at nexus? port IO_NPX irq 13

# Power management support (see LINT for more options)
#device		apm0    at nexus? disable flags 0x20 # Advanced Power Management

# PCCARD (PCMCIA) support

# Serial (COM) ports
#device		sio0	at isa? port IO_COM1 flags 0x10 irq 4
#device		sio1	at isa? port IO_COM2 irq 3
#device		sio2	at isa? disable port IO_COM3 irq 5
#device		sio3	at isa? disable port IO_COM4 irq 9

# Parallel port
#device		ppc0	at isa? irq 7
#device		ppbus		# Parallel port bus (required)
#device		lpt		# Printer
#device		plip		# TCP/IP over parallel
#device		ppi		# Parallel port interface device
#device		vpo		# Requires scbus and da


# PCI Ethernet NICs.
#device		de		# DEC/Intel DC21x4x (``Tulip'')
#device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)
#device		tx		# SMC 9432TX (83c170 ``EPIC'')
#device		vx		# 3Com 3c590, 3c595 (``Vortex'')
#device		wx		# Intel Gigabit Ethernet Card (``Wiseman'')

# PCI Ethernet NICs that use the common MII bus controller code.
device		miibus		# MII bus support
#device		dc		# DEC/Intel 21143 and various workalikes
device		rl		# RealTek 8129/8139
#device		sf		# Adaptec AIC-6915 (``Starfire'')
#device		sis		# Silicon Integrated Systems SiS 900/SiS 7016
#device		ste		# Sundance ST201 (D-Link DFE-550TX)
#device		tl		# Texas Instruments ThunderLAN
#device		vr		# VIA Rhine, Rhine II
#device		wb		# Winbond W89C840F
#device		xl		# 3Com 3c90x (``Boomerang'', ``Cyclone'')

# ISA Ethernet NICs.
#device		ed0	at isa? port 0x280 irq 10 iomem 0xd8000
#device		ex
#device		ep
# WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really
# exists only as a PCMCIA device, so there is no ISA attatement needed
# and resources will always be dynamically assigned by the pccard code.
#device		wi
# Aironet 4500/4800 802.11 wireless NICs. Note: the declaration below will
# work for PCMCIA and PCI cards, as well as ISA cards set to ISA PnP
# mode (the factory default). If you set the switches on your ISA
# card for a manually chosen I/O address and IRQ, you must specify
# those paremeters here.
#device		an
# The probe order of these is presently determined by i386/isa/isa_compat.c.
#device		ie0	at isa? port 0x300 irq 10 iomem 0xd0000
#device		fe0	at isa? port 0x300
#device		le0	at isa? port 0x300 irq 5 iomem 0xd0000
#device		lnc0	at isa? port 0x280 irq 10 drq 0
#device		cs0	at isa? port 0x300
#device		sn0	at isa? port 0x300 irq 10
# requires PCCARD (PCMCIA) support to be activated
#device		xe0	at isa?

# Pseudo devices - the number indicates how many units to allocated.
pseudo-device	loop		# Network loopback
pseudo-device	ether		# Ethernet support
pseudo-device	tun		# Packet tunnel.
pseudo-device	pty		# Pseudo-ttys (telnet etc)
pseudo-device	md		# Memory "disks"
#pseudo-device	gif	4	# IPv6 and IPv4 tunneling
#pseudo-device	faith	1	# IPv6-to-IPv4 relaying (translation)

# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device	bpf	1	#Berkeley packet filter

# USB support
#device		uhci		# UHCI PCI->USB interface
#device		ohci		# OHCI PCI->USB interface
#device		usb		# USB Bus (required)
#device		ugen		# Generic
#device		uhid		# "Human Interface Devices"
#device		ukbd		# Keyboard
#device		ulpt		# Printer
#device		umass		# Disks/Mass storage - Requires scbus and da
#device		ums		# Mouse
# USB Ethernet, requires mii
#device		aue		# ADMtek USB ethernet
#device		cue		# CATC USB ethernet
#device		kue		# Kawasaki LSI USB ethernet