Date: Tue, 8 Jan 2002 13:10:52 -0800 From: steve@Watt.COM (Steve Watt) To: stable@freebsd.org Subject: VXLOCK interlock avoided messages Message-ID: <200201082110.g08LAqJ97852@wattres.Watt.COM>
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Greetings!
I recently upgraded to a fresher stable (4.5-PRE, 2002-Jan-3 20:43PST),
and just saw (in my security report) the following very interesting
looking errors:
Jan 8 03:36:10 wattres /kernel: VXLOCK interlock avoided
Jan 8 03:36:10 wattres /kernel: VXLOCK interlock avoided in vn_lock
The box is usually pretty busy at that time of day running news expiry
and the various odd cron jobs (daily, etc.). My news spool and libraries
reside on different spindles, news articles on /news, news libraries
on /old/local (filesystem list below).
The previous update was 27 Oct in the evening PST, and I've never seen
this message before.
I see that it's a self-deadlock avoider in the code, but I don't
know how to reproduce it (yet). I'll keep an eye on it and see if
it occurs again.
Mostly, this is a heads-up, and I'm wondering if anyone has seen this
before and/or wants to gather more information.
Yes, I'm aware of the illegal cable configuration on my Adaptec, but
it's worked for two years now, and the only thing on the illegal stub
is the tape drive, which wasn't active at the time.
System information follows; PR kern/33709 has been filed with the same
info.
uname -a gives:
FreeBSD wattres.Watt.COM 4.5-PRERELEASE FreeBSD 4.5-PRERELEASE #0: Thu Jan 3 22:44:39 PST 2002 root@wattres.Watt.COM:/old/usr/obj/usr/src/sys/WATTRES i386
The mounted filesystems are an unholy mix of SCSI and ATAPI:
Filesystem 1024-blocks Used Avail Capacity Mounted on
/dev/ad0s1a 248047 54457 173747 24% /
/dev/ad0s1h 47356048 19449770 24117795 45% /home
/dev/ad0s1g 20326374 912648 17787617 5% /local
/dev/ad0s1f 2032623 672206 1197808 36% /usr
/dev/ad0s1e 2032623 297838 1572176 16% /var
procfs 4 4 0 100% /proc
/dev/da0a 31775 17929 11304 61% /old
/dev/da0g 2393778 1497898 704378 68% /old/local
/dev/da0f 1490111 1097335 273568 80% /old/usr
/dev/da0e 148703 69190 67617 51% /old/var
/dev/da1e 2384382 1510222 683410 69% /old/home
/dev/da1f 6274132 1616773 4155429 28% /news
/dev/da2c 1010689 591261 318360 65% /backup
dmesg.boot has:
Copyright (c) 1992-2002 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.5-PRERELEASE #0: Thu Jan 3 22:44:39 PST 2002
root@wattres.Watt.COM:/old/usr/obj/usr/src/sys/WATTRES
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 350797750 Hz
CPU: Pentium II/Pentium II Xeon/Celeron (350.80-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x652 Stepping = 2
Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
real memory = 134205440 (131060K bytes)
avail memory = 126590976 (123624K bytes)
Preloaded elf kernel "kernel" at 0xc03d5000.
Pentium Pro MTRR support enabled
md0: Malloc disk
Using $PIR table, 6 entries at 0xc00f0d10
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Intel 82443BX (440 BX) host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib1: <Intel 82443BX (440 BX) PCI-PCI (AGP) bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <Matrox MGA G200 AGP graphics accelerator> at 0.0 irq 10
isab0: <Intel 82371AB PCI to ISA bridge> at device 4.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 ATA33 controller> port 0xd800-0xd80f at device 4.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <Intel 82371AB/EB (PIIX4) USB controller> at 4.2 irq 10
chip1: <Intel 82371AB Power management controller> port 0xe800-0xe80f at device 4.3 on pci0
ed0: <NE2000 PCI Ethernet (ProLAN)> port 0xd000-0xd01f irq 10 at device 9.0 on pci0
ed0: address 00:20:78:12:71:34, type NE2000 (16 bit)
xl0: <3Com 3c905B-TX Fast Etherlink XL> port 0xb800-0xb87f mem 0xe1000000-0xe100007f irq 10 at device 10.0 on pci0
xl0: Ethernet address: 00:50:04:73:f9:3a
miibus0: <MII bus> on xl0
xlphy0: <3Com internal media interface> on miibus0
xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ahc0: <Adaptec 2940 Ultra SCSI adapter> port 0xb400-0xb4ff mem 0xe0800000-0xe0800fff irq 10 at device 11.0 on pci0
ahc0: Illegal cable configuration!!. Only two connectors on the adapter may be used at a time!
aic7880: Ultra Wide Channel A, SCSI Id=7, 16/255 SCBs
orm0: <Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xcc7ff on isa0
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 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: failed to get data.
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 255
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
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
sio2 at port 0x3e8-0x3ef irq 5 on isa0
sio2: type 16550A
sio3 at port 0x2e8-0x2ef irq 9 on isa0
sio3: type 16550A
sio4 at port 0x2f0-0x2f7 irq 11 on isa0
sio4: type 16550A
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0: IEEE1284 device found /NIBBLE
Probing for PnP devices on ppbus0:
ppbus0: <Hewlett-Packard HP LaserJet 5L/0101.03> HP ENHANCED PCL5,PJL
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
IP packet filtering initialized, divert enabled, rule-based forwarding disabled, default to deny, logging limited to 50 packets/entry by default
IPsec: Initialized Security Association Processing.
ata1-slave: identify retries exceeded
ad0: 73308MB <IBM-DTLA-307075> [148945/16/63] at ata0-master tagged UDMA33
acd0: CD-RW <SONY CD-RW CRX160E> at ata1-master using UDMA33
Waiting 5 seconds for SCSI devices to settle
sa0 at ahc0 bus 0 target 6 lun 0
sa0: <ARCHIVE Python 04687-XXX 6580> Removable Sequential Access SCSI-2 device
sa0: 7.812MB/s transfers (7.812MHz, offset 15)
da2 at ahc0 bus 0 target 5 lun 0
da2: <iomega jaz 1GB H.72> Removable Direct Access SCSI-2 device
da2: 10.000MB/s transfers (10.000MHz, offset 15)
da2: 1021MB (2091050 512 byte sectors: 64H 32S/T 1021C)
Mounting root from ufs:/dev/ad0s1a
da1 at ahc0 bus 0 target 1 lun 0
da1: <IBM DDRS-39130W S97B> Fixed Direct Access SCSI-2 device
da1: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing Enabled
da1: 8715MB (17850000 512 byte sectors: 255H 63S/T 1111C)
da0 at ahc0 bus 0 target 0 lun 0
da0: <IBM DDRS-34560D DC1B> Fixed Direct Access SCSI-2 device
da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing Enabled
da0: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C)
/etc/make.conf is pretty plain:
HAVE_MOTIF=yes
MAKE_IDEA=YES
COMPAT22=yes
CFLAGS=-O -pipe
NOPROFILE=true
CPUTYPE=i686
KERNCONF=WATTRES
HAVE_GTK=yes
And the kernel config is roughly GENERIC:
#
# WATTRES -- Kernel configuration file for FreeBSD/i386 wattres.Watt.COM
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246.2.37+ 2001/12/19 18:34:45 iedowse Exp $
machine i386
##cpu I386_CPU
##cpu I486_CPU
##cpu I586_CPU
cpu I686_CPU
ident WATTRES
maxusers 128
#makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
##options MATH_EMULATE #Support for x87 emulation
##options DDB
options INET #InterNETworking
options IPSEC #IP security
options IPSEC_ESP #IP security (crypto; define w/ IPSEC)
##options INET6 #IPv6 communications protocols
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options SOFTUPDATES #Enable FFS soft updates support
options UFS_DIRHASH #Improve performance on big directories
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=5000 #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 extensions
options _KPOSIX_PRIORITY_SCHEDULING
options IPFIREWALL
options IPFIREWALL_VERBOSE
options IPFIREWALL_VERBOSE_LIMIT=50
options IPDIVERT
options ICMP_BANDLIM #Rate limit bad replies
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
# To make an SMP kernel, the next two are needed
#options SMP # Symmetric MultiProcessor Kernel
#options APIC_IO # Symmetric (APIC) I/O
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
#
# If you have a Toshiba Libretto with its Y-E Data PCMCIA floppy,
# don't use the above line for fdc0 but the following one:
#device fdc0
# ATA and ATAPI devices
device ata0 at isa? port IO_WD1 irq 14
device ata1 at isa? port IO_WD2 irq 15
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
device atapifd # ATAPI floppy drives
device atapist # ATAPI tape drives
options ATA_STATIC_ID #Static device numbering
# SCSI Controllers
##device ahb # EISA AHA1742 family
device ahc # AHA2940 and onboard AIC7xxx devices
device amd # AMD 53C974 (Tekram DC-390(T))
##device isp # Qlogic family
device ncr # NCR/Symbios Logic
device sym # NCR/Symbios Logic (newer chipsets)
options SYM_SETUP_LP_PROBE_MAP=0x40
# Allow ncr to attach legacy NCR devices when
# both sym and ncr are configured
##device adv0 at isa?
##device adw
##device bt0 at isa?
##device aha0 at isa?
##device aic0 at isa?
device ncv # NCR 53C500
device nsp # Workbit Ninja SCSI-3
device stg # TMC 18C30/18C50
# SCSI peripherals
device scbus # SCSI bus (required)
device da # Direct Access (disks)
device sa # Sequential Access (tape etc)
device cd # CD
device pass # Passthrough device (direct SCSI access)
# RAID controllers interfaced to the SCSI subsystem
device asr # DPT SmartRAID V, VI and Adaptec SCSI RAID
device dpt # DPT Smartcache - See LINT for options!
device mly # Mylex AcceleRAID/eXtremeRAID
# RAID controllers
##device aac # Adaptec FSA RAID, Dell PERC2/PERC3
##device ida # Compaq Smart RAID
##device amr # AMI MegaRAID
##device mlx # Mylex DAC960 family
##device twe # 3ware Escalade
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1 flags 0x1
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? flags 0x100
# 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
device card
device pcic0 at isa? irq 0 port 0x3e0 iomem 0xd0000
device pcic1 at isa? irq 0 port 0x3e2 iomem 0xd4000 disable
# 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? port IO_COM3 irq 5
device sio3 at isa? port IO_COM4 irq 9
device sio4 at isa? port "0x2F0" irq 11
# 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 txp # 3Com 3cR990 (``Typhoon'')
device vx # 3Com 3c590, 3c595 (``Vortex'')
# 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 dc # DEC/Intel 21143 and various workalikes
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device pcn # AMD Am79C79x PCI 10/100 NICs
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 tx # SMC 9432TX (83c170 ``EPIC'')
device vr # VIA Rhine, Rhine II
device wb # Winbond W89C840F
device wx # Intel Gigabit Ethernet Card (``Wiseman'')
device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
# ISA Ethernet NICs.
# 'device ed' requires 'device miibus'
device ed0 at isa? port 0x280 irq 10 iomem 0xd8000
device ex
device ep
device fe0 at isa? port 0x300
# Xircom Ethernet
device xe
# PRISM I IEEE 802.11b wireless NIC.
device awi
# WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really
# exists only as a PCMCIA device, so there is no ISA attachment 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 parameters 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 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
# Pseudo devices - the number indicates how many units to allocate.
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"
pseudo-device gif # IPv6 and IPv4 tunneling
##pseudo-device faith 1 # IPv6-to-IPv4 relaying (translation)
pseudo-device snp 3 #Snoop device - to look at pty/vty/etc..
pseudo-device vn #Vnode driver (turns a file into a device)
pseudo-device speaker #Play IBM BASIC-style noises out your speaker
# 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
##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
##device uscanner # Scanners
##device urio # Diamond Rio MP3 Player
# USB Ethernet, requires mii
##device aue # ADMtek USB ethernet
##device cue # CATC USB ethernet
##device kue # Kawasaki LSI USB ethernet
--
Steve Watt KD6GGD PP-ASEL-IA ICBM: 121W 56' 57.8" / 37N 20' 14.9"
Internet: steve @ Watt.COM Whois: SW32
Free time? There's no such thing. It just comes in varying prices...
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