Date: Mon, 17 Jan 2000 20:50:42 -0500 (EST) From: dgilbert@velocet.ca To: FreeBSD-gnats-submit@freebsd.org Subject: kern/16165: Diskless machine panics swapping. Message-ID: <200001180150.UAA17871@strike.velocet.net>
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>Number: 16165
>Category: kern
>Synopsis: Diskless machine panics during swap
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Jan 17 18:00:01 PST 2000
>Closed-Date:
>Last-Modified:
>Originator: David Gilbert
>Release: FreeBSD 4.0-CURRENT i386
>Organization:
Velocet Communications
>Environment:
Diskless client and server both running the same 4.0 CURRENT, cvsup'd
this week. Diskless kernel configuration follows, as does the dmesg.
A 256M file on the server is being swapped to.
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 4.0-CURRENT #8: Sun Jan 16 23:32:25 EST 2000
root@strike.velocet.net:/usr/src/sys/compile/DISKLESS
Timecounter "i8254" frequency 1193182 Hz
CPU: AMD-K6tm w/ multimedia extensions (225.00-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x562 Stepping = 2
Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
AMD Features=0x400<<b10>>
real memory = 67108864 (65536K bytes)
avail memory = 62459904 (60996K bytes)
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <PCI to PCI bridge (vendor=1106 device=8597)> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
vga-pci0: <S3 model 8a13 graphics accelerator> mem 0xd8000000-0xdbffffff at device 0.0 on pci1
isab0: <VIA 82C586 PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
ata-pci0: <VIA 82C586 ATA-33 controller> port 0xf400-0xf40f at device 7.1 on pci0
ata-pci0: Busmastering DMA supported
pci0: VIA 83C572 USB controller (vendor=0x1106, dev=0x3038) at 7.2 irq 11
chip1: <VIA 82C586B ACPI interface> at device 7.3 on pci0
ed0: <NE2000 PCI Ethernet (RealTek 8029)> port 0xf600-0xf61f irq 9 at device 10.0 on pci0
ed0: address 00:60:67:08:cf:ae, type NE2000 (16 bit)
devclass_alloc_unit: ed0 already exists, using next available unit number
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <keyboard controller (i8042)> at port 0x60-0x6f on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
vga0: <Generic ISA VGA> at port 0x3b0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> on isa0
sc0: VGA <12 virtual consoles, flags=0x200>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
unknown: <PNP0000> can't assign resources
unknown0: <PNP0200> at port 0-0xf,0x81-0x83,0x87,0x89-0x8b,0x8f-0x91,0xc0-0xdf drq 4 on isa0
unknown1: <PNP0100> at port 0x40-0x43 irq 0 on isa0
unknown2: <PNP0b00> at port 0x70-0x71 irq 8 on isa0
unknown: <PNP0303> can't assign resources
unknown: <PNP0800> can't assign resources
unknown3: <PNP0c04> at port 0xf0-0xff irq 13 on isa0
unknown4: <PNP0c01> at iomem 0xe0000-0xfffff,0-0x9ffff,0xfffe0000-0xffffffff,0x100000-0x3ffffff on isa0
unknown5: <PNP0a03> at port 0x4d0-0x4d1,0xcf8-0xcff,0x480-0x48f,0x6000-0x607f,0x6080-0x60ff on isa0
unknown: <PNP0501> can't assign resources
unknown: <PNP0700> can't assign resources
unknown6: <PNP0400> at port 0x378-0x37f,0x778-0x77b irq 7 on isa0
unknown: <PNP0501> can't assign resources
bootpc_init: wired to interface 'ed0'
bootpc_init: using network interface 'ed0'
Bootpc testing starting
bootpc hw address is 0:60:67:8:cf:ae
My ip address is <ip address>.35
Server ip address is <ip address>.34
Gateway ip address is 0.0.0.0
boot file is /tftpboot/kernel.debug
Subnet mask is 255.255.255.240
Router is <ip address>.33
rootfs is <ip address>.34:/u4/repeat
swapfs is <ip address>.34:/u4
Ignoring field type 15
md_lookup_swap: Swap size is 262144 KB
Mounting root from nfs:
NFS ROOT: <ip address>.34:/u4/repeat
NFS SWAP: <ip address>.34:/u4
#
# GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
# http://www.freebsd.org/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 ./LINT configuration file. If you are
# in doubt as to the purpose or necessity of a line, check first in LINT.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.219 1999/12/23 05:32:53 wpaul Exp $
machine i386
#cpu I386_CPU
#cpu I486_CPU
cpu I586_CPU
#cpu I686_CPU
ident GENERIC
maxusers 32
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
#options MATH_EMULATE #Support for x87 emulation
options INET #InterNETworking
#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" req'ed
#options MSDOSFS #MSDOS Filesystem
#options CD9660 #ISO 9660 Filesystem
#options CD9660_ROOT #CD-ROM usable as root. "CD9660" req'ed
options PROCFS #Process filesystem
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options SCSI_DELAY=2000 #Be pessimistic about Joe SCSI device
options UCONSOLE #Allow users to grab the console
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
options KTRACE #ktrace(1) syscall trace support
options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
# 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
controller isa0
#controller eisa0
controller pci0
# Floppy drives
controller 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
controller ata0 at isa? port IO_WD1 irq 14
controller ata1 at isa? port IO_WD2 irq 15
controller ata2
device atadisk0 # ATA disk drives
device atapicd0 # ATAPI CDROM drives
device atapifd0 # ATAPI floppy drives
device atapist0 # ATAPI tape drives
options ATA_STATIC_ID #Static device numbering
#options ATA_ENABLE_ATAPI_DMA #Enable DMA on ATAPI devices
# ata0 doesn't appear to work for us.
#controller wdc0 at isa? port IO_WD1 irq 14
#device wd0 at wdc0 drive 0
#device wd1 at wdc0 drive 1
#controller wdc1 at isa? port IO_WD2 irq 15
#device wd2 at wdc1 drive 0
#device wd3 at wdc1 drive 1
# SCSI Controllers
# A single entry for any of these controllers (ahb, ahc, amd, ncr, etc...) is
# sufficient for any number of installed devices.
#controller ahb0 # EISA AHA1742 family
#controller ahc0 # AHA2940 and onboard AIC7xxx devices
#controller amd0 # AMD 53C974 (Teckram DC-390(T))
#controller dpt0 # DPT Smartcache - See LINT for options!
#controller isp0 # Qlogic family
#controller ncr0 # NCR/Symbios Logic
#controller sym0 # NCR/Symbios Logic (newer chipsets)
#controller adv0 at isa? port ? irq ?
#controller adw0
#controller bt0 at isa? port ? irq ?
#controller aha0 at isa? port ? irq ?
#controller aic0 at isa? port ? irq ?
# SCSI peripherals
# Only one of each of these is needed, they are dynamically allocated.
#controller scbus0 # SCSI bus (required)
#device da0 # Direct Access (disks)
#device sa0 # Sequential Access (tape etc)
#device cd0 # CD
#device pass0 # Passthrough device (direct SCSI access)
# RAID controllers
#device amr0 # AMI MegaRAID
#device mlx0 # Mylex DAC960 family
# atkbdc0 controls both the keyboard and the PS/2 mouse
controller atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1
#device psm0 at atkbdc? irq 12
device vga0 at isa? port ? conflicts
# 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
#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
#controller card0
#device pcic0 at isa?
#device pcic1 at isa?
# 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? port? flags 0x40 irq 7
#controller ppbus0 # Parallel port bus (required)
#device lpt0 # Printer
#device plip0 # TCP/IP over parallel
#device ppi0 # Parallel port interface device
#controller vpo0 # Requires scbus and da0
# PCI Ethernet NICs.
#device de0 # DEC/Intel DC21x4x (``Tulip'')
#device fxp0 # Intel EtherExpress PRO/100B (82557, 82558)
#device tx0 # SMC 9432TX (83c170 ``EPIC'')
#device vx0 # 3Com 3c590, 3c595 (``Vortex'')
# PCI Ethernet NICs that use the common MII bus controller code.
#controller miibus0 # MII bus support
#device dc0 # DEC/Intel 21143 and various workalikes
#device rl0 # RealTek 8129/8139
#device sf0 # Adaptec AIC-6915 (``Starfire'')
#device sis0 # Silicon Integrated Systems SiS 900/SiS 7016
#device ste0 # Sundance ST201 (D-Link DFE-550TX)
#device tl0 # Texas Instruments ThunderLAN
#device vr0 # VIA Rhine, Rhine II
#device wb0 # Winbond W89C840F
#device xl0 # 3Com 3c90x (``Boomerang'', ``Cyclone'')
# ISA Ethernet NICs.
device ed0 at isa? port 0x280 irq 10 iomem 0xd8000
#device ex0 at isa? port? irq?
# NOTE: This removes the isa attachment so that the pccard unit numbers
# come out right.
#device ep0
# 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 wi0
# 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 irq ?
#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 irq ?
#device sn0 at isa? port 0x300 irq 10
# requires PCCARD (PCMCIA) support to be activated
#device xe0 at isa? port? irq ?
# Pseudo devices - the number indicates how many units to allocated.
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
#pseudo-device sl 1 # Kernel SLIP
#pseudo-device ppp 1 # Kernel PPP
#pseudo-device tun # Packet tunnel.
pseudo-device pty # Pseudo-ttys (telnet etc)
pseudo-device md # Memory "disks"
# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device bpf #Berkeley packet filter
# USB support
#controller uhci0 # UHCI PCI->USB interface
#controller ohci0 # OHCI PCI->USB interface
#controller usb0 # USB Bus (required)
#device ugen0 # Generic
#device uhid0 # "Human Interface Devices"
#device ukbd0 # Keyboard
#device ulpt0 # Printer
#controller umass0 # Disks/Mass storage - Requires scbus and da0
#device ums0 # Mouse
pseudo-device vn
#pseudo-device snp 4
options INCLUDE_CONFIG_FILE
options USER_LDT
options MAXCONS=12
options SC_HISTORY_SIZE=200
device pcm0
options PNPBIOS
#options IPFIREWALL #firewall
#options IPFIREWALL_VERBOSE #print information about
# dropped packets
#options IPFIREWALL_FORWARD #enable transparent proxy support
#options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
#options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
#options IPDIVERT #divert sockets
#options IPFILTER #ipfilter support
#options IPFILTER_LOG #ipfilter logging
#options IPSTEALTH #support for stealth forwarding
#options TCPDEBUG
#options TCP_DROP_SYNFIN #drop TCP packets with SYN+FIN
#options TCP_RESTRICT_RST #restrict emission of TCP RST
#options ICMP_BANDLIM
#options DUMMYNET
#options BRIDGE
options BOOTP # Use BOOTP to obtain IP address/hostname
options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info
options BOOTP_NFSV3 # Use NFS v3 to NFS mount root
options BOOTP_COMPAT # Workaround for broken bootp daemons.
options BOOTP_WIRED_TO=ed0 # Use interface fxp0 for BOOTP
#options NULLFS
#options UNION
options DDB
>Description:
Machine will panic often. The signature of the panic that I have
recorded is the following:
fatal trap 12: page fault in kernel mode
curproc: pagedaemon
interupt mask: net bio cam
vn_todev+0x6: movl 0x48(%edx),%eax (edx and eax are 0x0)
pbgetvp+0x1a
swap_pageer_putpages+0x32b
ufs_vnoperatespec+0x7f
vm_pageout_flush+0x92
vm_page_bits+0x202
vm_pageout_page_free+0x49e
vm_opageout_page_free+0xd8c
fork_trampoline+0x8
I think the vm_pageout_page_free looks suspicious --- that function doesn't
look big enough to have such offsets. fork_trampoline looks like
particularly difficult magic. I don't know exactly where I should
be heading to track this one down, but I can reproduce it several
times a day on a small diskless machine.
>How-To-Repeat:
Boot machine, run X, wait.
>Fix:
None known.
>Release-Note:
>Audit-Trail:
>Unformatted:
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