System panic under load (additional information)

Thu Oct 26 16:23:07 UTC 2006

Kostik Belousov wrote:
> I saw several similar reports.
> 
> Please, submit me the output of the "print *mp" in the same frame.
> Also, I'm interested in kernel config. 
> 
> Is the problem reproducible ?

It seems now that any time I compile openoffice the system will 
eventually panic. Other disk intensive jobs, like my nightly photo-album 
update, may or may not trigger it. I currently have two dumps for 
6.1p10. I thought this might be failing hardware because the system has 
worked fine for nearly a year, but the fact that it panics on the same 
line of code every time makes me wonder.

Here are the prints from the latest dump:

(kgdb) print vp
$1 = (struct vnode *) 0x5ccc0000
(kgdb) print *mp
$2 = {mnt_list = {tqe_next = 0x0, tqe_prev = 0xc5a5b400}, mnt_op = 
0xc07647e0,
   mnt_vfc = 0xc0764820, mnt_vnodecovered = 0xc5b53110,
   mnt_syncer = 0xc5b57330, mnt_nvnodelist = {tqh_first = 0xc7bf5660,
     tqh_last = 0xc8c86cd4}, mnt_lock = {lk_interlock = 0xc0777654,
     lk_flags = 0, lk_sharecount = 0, lk_waitcount = 0, 
lk_exclusivecount = 0,
     lk_prio = 80, lk_wmesg = 0xc072698f "vfslock", lk_timo = 0,
     lk_lockholder = 0xffffffff, lk_newlock = 0x0}, mnt_mtx = 
{mtx_object = {
       lo_class = 0xc07534e4, lo_name = 0xc072697e "struct mount mtx",
       lo_type = 0xc072697e "struct mount mtx", lo_flags = 196608, 
lo_list = {
         tqe_next = 0x0, tqe_prev = 0x0}, lo_witness = 0x0}, mtx_lock = 4,
     mtx_recurse = 0}, mnt_writeopcount = 0, mnt_flag = 2101248,
   mnt_opt = 0xc5a50b30, mnt_optnew = 0x0, mnt_kern_flag = 536870912,
   mnt_maxsymlinklen = 120, mnt_stat = {f_version = 537068824, f_type = 7,
     f_flags = 2101248, f_bsize = 2048, f_iosize = 16384, f_blocks = 
47731967,
     f_bfree = 26320368, f_bavail = 22501811, f_files = 12341246,
     f_ffree = 11560039, f_syncwrites = 0, f_asyncwrites = 0, 
f_syncreads = 0,
     f_asyncreads = 0, f_spare = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
     f_namemax = 255, f_owner = 0, f_fsid = {val = {1161696182, 824004859}},
     f_charspare = '\0' <repeats 79 times>,
     f_fstypename = "ufs", '\0' <repeats 12 times>,
     f_mntfromname = "/dev/ad4s1h", '\0' <repeats 76 times>,
     f_mntonname = "/home", '\0' <repeats 82 times>}, mnt_cred = 0xc5b55280,
   mnt_data = 0xc5ac4900, mnt_time = 0, mnt_iosize_max = 131072,
   mnt_export = 0x0, mnt_mntlabel = 0x0, mnt_fslabel = 0x0,
   mnt_nvnodelistsize = 85186, mnt_hashseed = 2609235808, mnt_markercnt = 0,
   mnt_holdcnt = 0, mnt_holdcntwaiters = 0, mnt_secondary_writes = 0,
   mnt_secondary_accwrites = 2107220, mnt_ref = 85186}

Kernel Conf (it's based on generic, but isn't):

#
# GENERIC -- Generic kernel configuration file for FreeBSD/i386
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
# 
http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.429.2.3.2.1 2005/10/28 
19:22:41 jhb Exp $

machine		i386
#cpu		I486_CPU
#cpu		I586_CPU
cpu		I686_CPU
ident		TRISHA

# To statically compile in device wiring instead of /boot/device.hints
#hints		"GENERIC.hints"		# Default places to look for devices.

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

#options 	SCHED_ULE		# ULE scheduler
options 	SCHED_4BSD		# 4BSD scheduler
options 	PREEMPTION		# Enable kernel thread preemption
options 	INET			# InterNETworking
options 	INET6			# IPv6 communications protocols
options 	FFS			# Berkeley Fast Filesystem
options 	SOFTUPDATES		# Enable FFS soft updates support
options 	UFS_ACL			# Support for access control lists
options 	UFS_DIRHASH		# Improve performance on big directories
options 	MD_ROOT			# MD is a potential root device
options 	NFSCLIENT		# Network Filesystem Client
options 	NFSSERVER		# Network Filesystem Server
options 	NFS_ROOT		# NFS usable as /, requires NFSCLIENT
options 	MSDOSFS			# MSDOS Filesystem
options 	CD9660			# ISO 9660 Filesystem
options 	PROCFS			# Process filesystem (requires PSEUDOFS)
options 	PSEUDOFS		# Pseudo-filesystem framework
options 	GEOM_GPT		# GUID Partition Tables.
options 	COMPAT_43		# Compatible with BSD 4.3 [KEEP THIS!]
options 	COMPAT_FREEBSD4		# Compatible with FreeBSD4
options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
options 	KTRACE			# ktrace(1) support
options 	SYSVSHM			# SYSV-style shared memory
options 	SYSVMSG			# SYSV-style message queues
options 	SYSVSEM			# SYSV-style semaphores
options 	_KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
options 	AHC_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~128k to driver.
options 	AHD_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~215k to driver.
options 	ADAPTIVE_GIANT		# Giant mutex is adaptive.

device		apic			# I/O APIC

# Bus support.
device		eisa
device		pci

# Floppy drives
device		fdc

# ATA and ATAPI devices
device		ata
device		atadisk		# ATA disk drives
device		ataraid		# ATA RAID drives
device		atapicd		# ATAPI CDROM drives
device		atapifd		# ATAPI floppy drives
device		atapist		# ATAPI tape drives
options 	ATA_STATIC_ID	# Static device numbering
device      atapicam        # allow ATAPI ddevice access through scsi 
subsystem

# SCSI Controllers
#None

# SCSI peripherals
device		scbus		# SCSI bus (required for SCSI)
device		ch		# SCSI media changers
device		da		# Direct Access (disks)
device		sa		# Sequential Access (tape etc)
device		cd		# CD
device		pass		# Passthrough device (direct SCSI access)
device		ses		# SCSI Environmental Services (and SAF-TE)

# RAID controllers interfaced to the SCSI subsystem
#None

# RAID controllers
#None

# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc		# AT keyboard controller
device		atkbd		# AT keyboard
device		psm		# PS/2 mouse

device		vga		# VGA video card driver

device		splash		# Splash screen and screen saver support

# syscons is the default console driver, resembling an SCO console
device		sc

device		agp		# support several AGP chipsets
device      drm     # DRM core module required by DRM drivers
#device      radeondrm   # ATI Radeon

# Power management support (see NOTES for more options)
#device		apm
# Add suspend/resume support for the i8254.
device		pmtimer

# PCCARD (PCMCIA) support
# PCMCIA and cardbus bridge support
#None

# Serial (COM) ports
device		sio		# 8250, 16[45]50 based serial ports

# Parallel port
device		ppc
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

# If you've got a "dumb" serial or parallel PCI card that is
# supported by the puc(4) glue driver, uncomment the following
# line to enable it (connects to the sio and/or ppc drivers):
#device		puc

# PCI Ethernet NICs.
#None

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device		miibus		# MII bus support
device		fxp		# Intel EtherExpress PRO/100B (82557, 82558)

# ISA Ethernet NICs.  pccard NICs included.
#None

# ISA devices that use the old ISA shims
#device		le

# Wireless NIC cards
#None

# Pseudo devices.
device		loop		# Network loopback
device		random		# Entropy device
device		ether		# Ethernet support
device		sl		# Kernel SLIP
device		ppp		# Kernel PPP
device		tun		# Packet tunnel.
device		pty		# Pseudo-ttys (telnet etc)
device		md		# Memory "disks"
device		gif		# IPv6 and IPv4 tunneling
device		faith		# IPv6-to-IPv4 relaying (translation)

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device		bpf		# Berkeley packet filter

# USB support
device		uhci		# UHCI PCI->USB interface
device		ohci		# OHCI PCI->USB interface
device		ehci		# EHCI PCI->USB interface (USB 2.0)
device		usb		# USB Bus (required)
#device		udbp		# USB Double Bulk Pipe devices
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
#device		ural		# Ralink Technology RT2500USB wireless NICs
#device		urio		# Diamond Rio 500 MP3 player
device		uscanner	# Scanners

# USB Ethernet, requires miibus
#None

# FireWire support
#None