My 4.1.1-STABLE box died in the ahc driver today while running dump.
After some poking around, I discovered that I can kill it reliably by
running "ls -lR /". The kernel was built after cvsuping today. A
kernel a week older does not have the problem. My hand transcription
of the first half of the console messages are shown below (sorry, I
got writers cramp - if more is needed I'll try again), along with my
dmesg and kernel config file.
ahc0:A:1 ahc_intr - referenced scb not valid during seqint 0x71 scb(70)
ahc0: WARNING no command for scb 70 (cmdcmplt)
QOUTPOS = 64
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc013a730
stack pointer = 0x10:0xc7dd6cfc
frame pointer = 0x10:0xc7dd6d0c
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 5 (syncer)
interrupt mask = bio cam
kernel i type 12 trap, code = 0
Stopped at ahc_match_scb+0x18: movl 0(%esi),%eax
db> trace
ahc_match_scb(c0a28800,0,1,41,0,ff,0) at ahc_match_scb+0x18
ahc_search_quinfifo(c0a28800,1,41,0,ff) at ahc_search_quinfifo+0xf7
ahc_freeze_devq(c0a28800,c0a2e5e4) at ahc_freeze_devq+0x5d
ahc_handle_seqint(c0a28800,71) at ahc_handle_seqint+0x135
ahc_freebsd_intr(c0a28800,6c0400,c0313b80,ce008000,c7dd6e5c) at ahc_freebsd_intr+0x97
Copyright (c) 1992-2000 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 4.1.1-STABLE #1: Thu Oct 5 17:45:53 CDT 2000
[EMAIL PROTECTED]:/usr/src/sys/compile/CATBERT
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium Pro (199.43-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x619 Stepping = 9
Features=0xf9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV>
real memory = 134217728 (131072K bytes)
avail memory = 127238144 (124256K bytes)
Pentium Pro MTRR support enabled
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
isab0: <Intel 82371SB PCI to ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
pci0: <Intel PIIX3 ATA controller> at 7.1
pci0: <Matrox MGA Millennium 2064W graphics accelerator> at 11.0 irq 11
ahc0: <Adaptec 2940 Ultra SCSI adapter> port 0xf800-0xf8ff mem 0xffbe9000-0xffbe9fff
irq 10 at device 15.0 on pci0
aic7880: Wide Channel A, SCSI Id=7, 16/255 SCBs
sym0: <810a> port 0xfc00-0xfcff mem 0xffbebc00-0xffbebcff irq 10 at device 17.0 on pci0
sym0: No NVRAM, ID 7, Fast-10, SE, parity checking
isa0: too many dependant configs (8)
isa0: unexpected small tag 14
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> irq 1 on atkbdc0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model Generic PS/2 mouse, device ID 0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> on isa0
sc0: VGA <16 virtual consoles, flags=0x200>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio3 at port 0x2e8-0x2ef irq 3 on isa0
sio3: type 16550A
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ed0 at port 0x280-0x29f iomem 0xd8000-0xd9fff irq 5 on isa0
ed0: address 00:00:c0:25:72:e2, type SMC8416C/SMC8416BT (16 bit)
sbc0: <Creative SB AWE64> at port 0x220-0x22f,0x300-0x301,0x388-0x38b irq 9 drq 0,5 on
isa0
sbc0: setting card to irq 9, drq 0, 5
pcm0: <SB DSP 4.16> on sbc0
joy0: <Generic PnP Joystick> at port 0x200-0x207 on isa0
IP packet filtering initialized, divert enabled, rule-based forwarding enabled,
default to deny, logging limited to 100 packets/entry by default
Waiting 5 seconds for SCSI devices to settle
sa0 at ahc0 bus 0 target 4 lun 0
sa0: <CONNER CTT8000-S 1.17> Removable Sequential Access SCSI-2 device
sa0: 5.000MB/s transfers (5.000MHz, offset 15)
sa1 at sym0 bus 0 target 5 lun 0
sa1: <EXABYTE EXB-850085QANXRC 06X0> Removable Sequential Access SCSI-2 device
sa1: 4.032MB/s transfers (4.032MHz, offset 8)
da1 at ahc0 bus 0 target 1 lun 0
da1: <QUANTUM VIKING II 9.1WSE 4110> Fixed Direct Access SCSI-2 device
da1: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
da1: 8709MB (17836668 512 byte sectors: 255H 63S/T 1110C)
Mounting root from ufs:da1s1a
cd0 at ahc0 bus 0 target 5 lun 0
cd0: <NEC CD-ROM DRIVE:462 1.14> Removable CD-ROM SCSI-2 device
cd0: 10.000MB/s transfers (10.000MHz, offset 15)
cd0: Attempt to query device size failed: NOT READY, Medium not present
WARNING: / was not properly dismounted
da0 at ahc0 bus 0 target 0 lun 0
da0: <WDIGTL WDE2170-1807A1 1.44> Fixed Direct Access SCSI-2 device
da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
da0: 2047MB (4194057 512 byte sectors: 255H 63S/T 261C)
cd1 at sym0 bus 0 target 6 lun 0
cd1: <YAMAHA CRW6416S 1.0b> Removable CD-ROM SCSI-2 device
cd1: 10.000MB/s transfers (10.000MHz, offset 8)
cd1: cd present [4294911071 x 2048 byte records]
machine i386
cpu I686_CPU
ident CATBERT
maxusers 32
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
makeoptions KERNEL=kernel
options DDB #Enable kernel debugger
#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=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 extentions
options _KPOSIX_PRIORITY_SCHEDULING
options ICMP_BANDLIM #Rate limit bad replies
options SOFTUPDATES #
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
# 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
##options ATA_ENABLE_ATAPI_DMA #Enable DMA on ATAPI devices
# SCSI Controllers
device ahc0 # AHA2940 and onboard AIC7xxx devices
device sym0 # NCR/Symbios Logic (newer chipsets)
# 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)
# My actual SCSI devices
device scbus0 at ahc0
device da0 at scbus0 target 0
device da1 at scbus0 target 1
device sa0 at scbus0 target 4
device cd0 at scbus0 target 5
device scbus1 at sym0
device sa1 at scbus1 target 5
device cd1 at scbus1 target 6
# 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
# SOUND
device pcm
device sbc
device joy
# VGA controller
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?
# Floating point support - do not disable.
device npx0 at nexus? port IO_NPX irq 13
# Advanced Power Management
#device apm0 at nexus? # disable flags 0x20
# Serial (COM) ports
device sio0 at isa? port IO_COM1 flags 0x10 irq 4
device sio1 at isa? disable port IO_COM2 irq 3
device sio2 at isa? disable port IO_COM3 irq 5
device sio3 at isa? port IO_COM4 irq 3
# Parallel port
device ppc0 at isa? irq 7
device ppbus # Parallel port bus (required)
device lpt # Printer
# ISA Ethernet NICs.
device ed0 at isa? port 0x280 irq 5 iomem 0xd8000
# Pseudo devices - the number indicates how many units to allocated.
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
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 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 #Berkeley packet filter
# Firewall stuff...
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 IPDIVERT # divert sockets
options TCP_DROP_SYNFIN # drop TCP packets with SYN+FIN
options TCP_RESTRICT_RST # restrict emission of TCP RST
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