Kernel panic on boot (how to debug?)
Benjamin Lutz
mail at maxlor.com
Tue Sep 19 13:17:52 PDT 2006
Hello,
Since I added a new P-ATA disk to my computer, FreeBSD 6.1/amd64 panics while
booting:
[...]
acd0: DVDROM <PHEHDER DVD A/ 2> at ata0-master UDMA33
acd1: DVDR <PLEXTOR DVDR PX-708A/1.07> at ata0-slave UDMA33
ad2: 78533MB <HDS722580VLAT20 V32OA60A> at ata1-master UDMA100
Fatal trap 18: integer divide fault while in kernel mode
instruction pointer = 0x8:0xffffffff801bd9a5
stack pointer = 0x10:0xffffffff80845a90
frame pointer = 0x10:0xffffffff80845ae0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 0 (swapper)
trap number = 18
panic: integer divide fault
Uptime: 1s
Cannot dump. No dump device defined.
Automatic reboot in 15 seconds - press a key on the console to abort
If I just disable the second IDE channel, the system boots fine. FreeBSD
5.5/i386, which is also installed on this computer, boots fine with or
without that disk.
I've been trying to get into the kernel debugger to get a backtrace, but
without luck. I've hooked up a serial console, but I just can't get into DDB.
I've tried various option (adding debug.debugger_on_panic="1"
to /boot/loader.conf, the BREAK_TO_DEBUGGER and KDB_UNATTENDED kernel options
as well as specifying "boot -d" at the boot loader - without any effect.
Since the panic happens before init is started, my dump device configuration
in /etc/rc.conf isn't read either.
How can I get meaningful debugging data out of this system?
Oh, btw, notice the weird device name string for acd0. It's supposed to say
<Pioneer DVD-ROM ATAPIModel DVD-106S 0122/E1.22>, and in the BIOS as well as
under FreeBSD 5.5/i386 it does. The erroneous strings shows up on FreeBSD 6.1
with or without the second IDE channel being enabled.
Any idea what might cause this?
The full boot log follows bellow.
Cheers
Benjamin
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2006 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 6.1-RELEASE-p7 #4: Tue Sep 19 21:56:53 CEST 2006
root at merlin.intranet:/usr/obj/usr/src/sys/MERLIN64
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) 64 Processor 3500+ (2210.09-MHz K8-class CPU)
Origin = "AuthenticAMD" Id = 0xff0 Stepping = 0
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow+,3DNow>
real memory = 1073676288 (1023 MB)
avail memory = 1026371584 (978 MB)
ACPI APIC Table: <Nvidia AWRDACPI>
ioapic0 <Version 1.1> irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: <Nvidia AWRDACPI> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
cpu0: <ACPI CPU> on acpi0
powernow0: <Cool`n'Quiet K8> on cpu0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff,0xcf0-0xcf3 on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <NVIDIA nForce3-250 AGP Controller> mem 0xf0000000-0xf7ffffff at device
0.0 on pci0
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
pci0: <serial bus, SMBus> at device 1.1 (no driver attached)
ohci0: <OHCI (generic) USB controller> mem 0xfe02f000-0xfe02ffff irq 21 at
device 2.0 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 4 ports with 4 removable, self powered
ohci1: <OHCI (generic) USB controller> mem 0xfe02e000-0xfe02efff irq 22 at
device 2.1 on pci0
ohci1: [GIANT-LOCKED]
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: <OHCI (generic) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 4 ports with 4 removable, self powered
ehci0: <NVIDIA nForce3 250 USB 2.0 controller> mem 0xfe02d000-0xfe02d0ff irq
23 at device 2.2 on pci0
ehci0: [GIANT-LOCKED]
usb2: EHCI version 1.0
usb2: companion controllers, 4 ports each: usb0 usb1
usb2: <NVIDIA nForce3 250 USB 2.0 controller> on ehci0
usb2: USB revision 2.0
uhub2: nVidia EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: 8 ports with 8 removable, self powered
uhub3: vendor 0x0409 product 0x013e, class 9/0, rev 2.00/0.07, addr 2
uhub3: multiple transaction translators
uhub3: 4 ports with 4 removable, self powered
pci0: <multimedia, audio> at device 6.0 (no driver attached)
atapci0: <nVidia nForce3 Pro UDMA133 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xe000-0xe00f at device 8.0 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
atapci1: <nVidia nForce3 Pro SATA150 controller> port
0x9e0-0x9e7,0xbe0-0xbe3,0x960-0x967,0xb60-0xb63,0xcc00-0xcc0f,0xc800-0xc87f
irq 22 at device 9.0 on pci0
ata2: <ATA channel 0> on atapci1
ata3: <ATA channel 1> on atapci1
atapci2: <nVidia nForce3 Pro SATA150 controller> port
0x9f0-0x9f7,0xbf0-0xbf3,0x970-0x977,0xb70-0xb73,0xb400-0xb40f,0xb000-0xb07f
irq 23 at device 10.0 on pci0
ata4: <ATA channel 0> on atapci2
ata5: <ATA channel 1> on atapci2
pcib1: <ACPI PCI-PCI bridge> at device 11.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 14.0 on pci0
pci2: <ACPI PCI bus> on pcib2
pcm0: <Creative EMU10K1> port 0x9c00-0x9c1f irq 18 at device 8.0 on pci2
pcm0: <SigmaTel STAC9708/11 AC97 Codec>
pci2: <multimedia, video> at device 9.0 (no driver attached)
pci2: <multimedia> at device 9.1 (no driver attached)
fwohci0: <VIA Fire II (VT6306)> port 0x9400-0x947f mem 0xfdfff000-0xfdfff7ff
irq 19 at device 12.0 on pci2
fwohci0: OHCI version 1.0 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:10:dc:00:00:7a:42:db
fwohci0: Phy 1394a available S400, 3 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:10:dc:7a:42:db
fwe0: Ethernet address: 02:10:dc:7a:42:db
fwe0: if_start running deferred for Giant
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwohci0: Initiate bus reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
re0: <RealTek 8169S Single-chip Gigabit Ethernet> port 0x9000-0x90ff mem
0xfdffe000-0xfdffe0ff irq 16 at device 13.0 on pci2
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S media interface> on miibus0
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
re0: Ethernet address: 00:11:09:65:fc:0e
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A, console
ppc0: <Standard parallel printer port> port 0x378-0x37f,0x778-0x77b irq 7 on
acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
orm0: <ISA Option ROMs> at iomem 0xc0000-0xce7ff,0xd0000-0xd3fff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
Timecounter "TSC" frequency 2210091822 Hz quality 800
Timecounters tick every 1.000 msec
acd0: DVDROM <PHEHDER DVD A/ 2> at ata0-master UDMA33
acd1: DVDR <PLEXTOR DVDR PX-708A/1.07> at ata0-slave UDMA33
ad2: 78533MB <HDS722580VLAT20 V32OA60A> at ata1-master UDMA100
Fatal trap 18: integer divide fault while in kernel mode
instruction pointer = 0x8:0xffffffff801bd9a5
stack pointer = 0x10:0xffffffff80845a90
frame pointer = 0x10:0xffffffff80845ae0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 0 (swapper)
trap number = 18
panic: integer divide fault
Uptime: 1s
Cannot dump. No dump device defined.
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
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