Kernel Panic on 4.8-STABLE

Brad brad at
Sun Apr 27 11:29:11 PDT 2003


Recently, I've been having kernel panics on 4.8RC.  This made me upgrade
to 4.8-STABLE hoping that the problem would be solved.  Unfortunately,
I've had no such luck.  The panic happens about 1 hour after the machine
is booted.  Once booted and the panic occurs, the machine will reboot
itself for literally hours, until such time as the problem magically
goes away.  The box has been up for about a day now with no reboots.
I'm scared to play around with anything that might cause a reboot as I
can't afford this box to have downtime of ~8 - 12hrs (it's a remote

If additional information is required, please let me know.  The file
that the kernel is generated from is a pretty generic copy of GENERIC
with IPFIREWALL compiled in.

Any help would be appreciated.



-- panic note from /var/log/messages --

Apr 24 22:13:50 tsunami /kernel:
Apr 24 22:13:50 tsunami /kernel:
Apr 24 22:13:50 tsunami /kernel: Fatal trap 12: page fault while in
kernel mode
Apr 24 22:13:50 tsunami /kernel: fault virtual address  = 0x0
Apr 24 22:13:50 tsunami /kernel: fault code             = supervisor
write, page not present
Apr 24 22:13:50 tsunami /kernel: instruction pointer    = 0x8:0xc0237068
Apr 24 22:13:50 tsunami /kernel: stack pointer          =
Apr 24 22:13:50 tsunami /kernel: frame pointer          =
Apr 24 22:13:50 tsunami /kernel: code segment           = base 0x0,
limit 0xfffff, type 0x1b
Apr 24 22:13:50 tsunami /kernel: = DPL 0, pres 1, def32 1, gran 1
Apr 24 22:13:50 tsunami /kernel: processor eflags       = interrupt
enabled, resume, IOPL = 0
Apr 24 22:13:50 tsunami /kernel: current process                = Idle
Apr 24 22:13:50 tsunami /kernel: interrupt mask         =
Apr 24 22:13:50 tsunami /kernel: trap number            = 12
Apr 24 22:13:50 tsunami /kernel: panic: page fault
Apr 24 22:13:50 tsunami /kernel:

-- DMESG output --

syncing disks... Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights
FreeBSD 4.8-STABLE #0: Fri Apr 25 15:08:15 EDT 2003
    root at
Timecounter "i8254"  frequency 1193182 Hz
CPU: AMD Athlon(TM)Processor (1343.19-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x644  Stepping = 4
  AMD Features=0xc0440000<RSVD,AMIE,DSP,3DNow!>
real memory  = 536788992 (524208K bytes)
avail memory = 517033984 (504916K bytes)
Preloaded elf kernel "kernel" at 0xc0522000.
Pentium Pro MTRR support enabled
md0: Malloc disk
Using $PIR table, 11 entries at 0xc00f1770
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
agp0: <Ali Generic host to PCI bridge> mem 0xf0000000-0xf7ffffff at
device 0.0 on pci0
pcib1: <AcerLabs M5247 PCI-PCI(AGP Supported) bridge> at device 1.0 on
pci1: <PCI bus> on pcib1
pci1: <NVidia Riva TNT2 graphics accelerator> at 0.0 irq 11
ohci0: <AcerLabs M5237 (Aladdin-V) USB controller> mem
0xeb800000-0xeb800fff irq 6 at device 2.0 on pci0
usb0: OHCI version 1.0, legacy support
usb0: <AcerLabs M5237 (Aladdin-V) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: AcerLabs OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 4 ports with 4 removable, self powered
atapci0: <AcerLabs Aladdin ATA100 controller> port 0xd400-0xd40f at
device 4.0 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
ohci1: <AcerLabs M5237 (Aladdin-V) USB controller> mem
0xea800000-0xea800fff irq 12 at device 6.0 on pci0
usb1: OHCI version 1.0, legacy support
usb1: <AcerLabs M5237 (Aladdin-V) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: AcerLabs OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
isab0: <AcerLabs M1533 portable PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
xl0: <3Com 3c905B-TX Fast Etherlink XL> port 0xb400-0xb47f mem
0xe9800000-0xe980007f irq 10 at device 11.0 on pci0
xl0: Ethernet address: 00:50:da:19:cc:b4
miibus0: <MII bus> on xl0
xlphy0: <3Com internal media interface> on miibus0
xlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
chip0: <AcerLabs M15x3 Power Management Unit> at device 17.0 on pci0
orm0: <Option ROM> at iomem 0xc0000-0xcffff on isa0
fdc0: cannot reserve interrupt line
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
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
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 16/16/15 bytes threshold
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 disabled, rule-based forwarding
enabled, default to deny, logging disabled
ad0: 38166MB <WDC WD400JB-00ENA0> [77545/16/63] at ata0-master UDMA100
acd0: CDROM <ATAPI-CD ROM-DRIVE-50MAX> at ata1-slave PIO4
Mounting root from ufs:/dev/ad0s1a
WARNING: / was not properly dismounted

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