I'm getting some panics on a few FreeBSD 5.4 boxes, and I'm trying to
figure out a way to get them to drop to some sort of debugger, or to dump
core. It used to be that you'd just add:
options DDB
options DDB_UNATTENDED
and build a kernel with -g, set 'dumpon', and then when it paniced it
would write it out to disk. For 5.4, I understand you also need "options
KDB", and you need to replace DDB_UNATTENDED with KDB_UNATTENDED.
I've done all of that, but the panic did not trigger a core dump, and did
not leave me at a prompt (the latter probably because of KDB_UNATTENDED?).
The panic message, in the present case, in case someone's seen this
particular problem before:
Fatal trap 12: page fault while in kernel mode.
cpuid = 01; apic id = 06
fault virtual address = 0x24
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc035c7cf
stack pointer = 0x10:0xeb858c74
frame pointer = 0x10:0xeb858c88
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL equal 0
current process = 8 (pagedaemon)
Would this sort of panic prevent a dump from occuring? BTW: I have checked
the handbook and haven't found the answer (it doesn't seem to mention KDB
at all).
Unfortunately the kernel buffer appears insufficient to store all the
output from "boot -v", so I'm booting it with no flags. I've included the
output of dmesg. Following that is the kernel's config. sysctl -a output
is available at http://dpk.net/5.4-sysctl.txt (35KB)
Copyright (c) 1992-2005 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 5.4-RELEASE-p5 #2: Sun Jul 31 20:58:46 PDT 2005
[EMAIL PROTECTED]:/usr/src/sys/i386/compile/STD-PAE
MPTable: <INTEL LINDENHURST >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 3.00GHz (3000.12-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf41 Stepping = 1
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Hyperthreading: 2 logical CPUs
real memory = 4831838208 (4608 MB)
avail memory = 4194848768 (4000 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 6
ioapic0: Assuming intbase of 0
ioapic1: Assuming intbase of 24
ioapic2: Assuming intbase of 48
ioapic3: Assuming intbase of 72
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 24-47 on motherboard
ioapic2 <Version 2.0> irqs 48-71 on motherboard
ioapic3 <Version 2.0> irqs 72-95 on motherboard
npx0: <math processor> on motherboard
npx0: INT 16 interface
cpu0 on motherboard
cpu1 on motherboard
pcib0: <MPTable Host-PCI bridge> pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
pcib1: <PCI-PCI bridge> irq 16 at device 2.0 on pci0
pci1: <PCI bus> on pcib1
pcib2: <PCI-PCI bridge> at device 0.0 on pci1
pci3: <PCI bus> on pcib2
pcib3: <MPTable PCI-PCI bridge> at device 0.2 on pci1
pci2: <PCI bus> on pcib3
3ware device driver for 9000 series storage controllers, version: 2.50.02.012
twa0: <3ware 9000 series Storage Controller> port 0xa800-0xa8ff mem
0xfb800000-0xfbffffff,0xfc8ffc00-0xfc8ffcff irq 72 at device 1.0 on pci2
twa0: 4 ports, Firmware FE9X 2.04.00.005, BIOS BE9X 2.03.01.047
pcib4: <PCI-PCI bridge> irq 16 at device 3.0 on pci0
pci4: <PCI bus> on pcib4
pcib5: <MPTable PCI-PCI bridge> at device 28.0 on pci0
pci5: <PCI bus> on pcib5
em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port
0xbc00-0xbc3f mem 0xfc9e0000-0xfc9fffff irq 26 at device 1.0 on pci5
em0: Ethernet address: 00:30:48:83:0a:f8
em0: Speed:N/A Duplex:N/A
em1: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port
0xb800-0xb83f mem 0xfc9a0000-0xfc9bffff irq 27 at device 2.0 on pci5
em1: Ethernet address: 00:30:48:83:0a:f9
em1: Speed:N/A Duplex:N/A
pci0: <serial bus, USB> at device 29.0 (no driver attached)
pci0: <serial bus, USB> at device 29.1 (no driver attached)
pci0: <base peripheral> at device 29.4 (no driver attached)
pci0: <base peripheral, interrupt controller> at device 29.5 (no driver
attached)
pci0: <serial bus, USB> at device 29.7 (no driver attached)
pcib6: <MPTable PCI-PCI bridge> at device 30.0 on pci0
pci6: <PCI bus> on pcib6
pci6: <display, VGA> at device 2.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel 6300ESB UDMA100 controller> port
0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
ata0: channel #0 on atapci0
ata1: channel #1 on atapci0
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
orm0: <ISA Option ROMs> at iomem
0xca800-0xcb7ff,0xc9800-0xca7ff,0xc8000-0xc97ff,0xc0000-0xc7fff on isa0
pmtimer0 on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x64,0x60 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5 irq 6 drq 2 on isa0
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
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
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0700> can't assign resources (port)
unknown: <PNP0c02> can't assign resources (port)
unknown: <PNP0303> can't assign resources (port)
Timecounters tick every 10.000 msec
IP Filter: v3.4.35 initialized. Default = pass all, Logging = enabled
ipfw2 initialized, divert disabled, rule-based forwarding disabled, default to
accept, logging disabled
acd0: DVDROM <MATSHITADVD-ROM SR-8178/PZ16> at ata1-slave PIO4
da0 at twa0 bus 0 target 0 lun 0
da0: <3ware Logical Disk 00 1.00> Fixed Direct Access SCSI-0 device
da0: 100.000MB/s transfers
da0: 762918MB (1562456064 512 byte sectors: 255H 63S/T 97258C)
SMP: AP CPU #1 Launched!
Mounting root from ufs:/dev/da0s1a
em0: Link is up 100 Mbps Full Duplex
#KERNEL CONFIGURATION FILE
ident STD-PAE
options PAE
options SMP
makeoptions "NO_MODULES=yes DEBUG=-g"
options DDB
options KDB
options KDB_UNATTENDED
#The following four lines are not found in the GENERIC file.
options IPFILTER #ipfilter support
options IPFILTER_LOG #ipfilter logging
options IPFIREWALL #firewall
options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
# The following lines, to the end of this file, were all taken verbatim
# from the GENERIC file (though many lines from that file were excluded).
machine i386
cpu I686_CPU
# To statically compile in device wiring instead of /boot/device.hints
#hints "GENERIC.hints" # Default places to look for devices.
options SCHED_4BSD # 4BSD scheduler
options INET # InterNETworking
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 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 SCSI_DELAY=15000 # 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 ADAPTIVE_GIANT # Giant mutex is adaptive.
options ASR_COMPAT # asr old ioctls support, needed by
raidutils
device apic # I/O APIC
device carp
# Bus support. Do not remove isa, even if you have no isa slots
device isa
device eisa
device pci
# Floppy drives
device fdc
# ATA and ATAPI devices
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 ahc # AHA2940 and onboard AIC7xxx devices
device ahd # AHA39320/29320 and onboard AIC79xx devices
device mpt # LSI-Logic MPT-Fusion
nodevice sym # NCR/Symbios Logic (newer chipsets + those of
`ncr')
# SCSI peripherals
device scbus # SCSI bus (required for SCSI)
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
device amr # AMI MegaRAID
device arcmsr # Areca SATA II RAID
nodevice asr # DPT SmartRAID V, VI and Adaptec SCSI RAID
device ciss # Compaq Smart RAID 5*
nodevice dpt # DPT Smartcache III, IV - See NOTES for options
nodevice iir # Intel Integrated RAID
device ips # IBM (Adaptec) ServeRAID
device twa # 3ware 9000 series PATA/SATA RAID
# RAID controllers
device aac # Adaptec FSA RAID
device aacp # SCSI passthrough for aac (requires CAM)
nodevice ida # Compaq Smart RAID
device twe # 3ware ATA RAID
# 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
# syscons is the default console driver, resembling an SCO console
device sc
nodevice agp # support several AGP chipsets
# Floating point support - do not disable.
device npx
# Add suspend/resume support for the i8254.
device pmtimer
# Serial (COM) ports
device sio # 8250, 16[45]50 based serial ports
# 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.
device em # Intel PRO/1000 adapter Gigabit Ethernet Card
device ixgb # Intel PRO/10GbE Ethernet Card
# 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 bfe # Broadcom BCM440x 10/100 Ethernet
device bge # Broadcom BCM570xx Gigabit Ethernet
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
# Pseudo devices.
device loop # Network loopback
device mem # Memory and kernel memory devices
device io # I/O device
device random # Entropy device
device ether # Ethernet support
device ppp # Kernel PPP
device pty # Pseudo-ttys (telnet etc)
device md # Memory "disks"
# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
device bpf # Berkeley packet filter
# USB support
nodevice uhci # UHCI PCI->USB interface
nodevice ohci # OHCI PCI->USB interface
nodevice usb # USB Bus (required)
nodevice ugen # Generic
nodevice uhid # "Human Interface Devices"
nodevice ukbd # Keyboard
nodevice umass # Disks/Mass storage - Requires scbus and da
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