5.3-BETA1 panic

Yesterday's RELENG_5 fails to boot on my laptop.  The previous kernel
from August 11th is fine.  Panic message attached - let me know if I can
help further.

Cheers,

Ceri

/boot/kernel.crappy/kernel text=0x453630 data=0x98d28+0x72918 syms=[0x4+0x64ca0+0x4+0x7a176]
OK boot -s
/boot/kernel/acpi.ko text=0x3eed4 data=0x1a84+0xd2c syms=[0x4+0x6fd0+0x4+0x9144]
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2004 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 5.3-BETA1 #5: Sun Aug 22 17:37:28 BST 2004
    root_at_falken.private.submonkey.net:/usr/obj/usr/src/sys/FALKEN
WARNING: WITNESS option enabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: mobile AMD Athlon(tm) XP2500+ (1855.20-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x6a0  Stepping = 0
  Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
  AMD Features=0xc0480000<MP,AMIE,DSP,3DNow!>
real memory  = 200212480 (190 MB)
avail memory = 186351616 (177 MB)
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <PTLTD   RSDT> on motherboard
acpi0: [GIANT-LOCKED]
acpi0: Power Button (fixed)
unknown: I/O range not supported
acpi_ec0: <Embedded Controller: GPE 0x18> port 0x66,0x62 on acpi0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x8008-0x800b on acpi0
cpu0: <ACPI CPU (2 Cx states)> port 0x530-0x537 on acpi0
acpi_tz0: <Thermal Zone> port 0x530-0x537 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
ACPI link \_SB_.PCI0.ISA_.LNKU has invalid initial irq 9, ignoring
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pci1: <display, VGA> at device 5.0 (no driver attached)
ohci0: <AcerLabs M5237 (Aladdin-V) USB controller> mem 0xd0000000-0xd0000fff irq 10 at device 2.0 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
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
pcm0: <Acer Labs M5451> port 0x8400-0x84ff mem 0xd0001000-0xd0001fff irq 5 at device 6.0 on pci0
pcm0: <Conexant CX20468 AC97 Codec>
pcm0: [GIANT-LOCKED]
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
pci0: <simple comms> at device 8.0 (no driver attached)
cbb0: <O2Micro OZ6912/6972 PCI-CardBus Bridge> mem 0x80000000-0x80000fff irq 11 at device 10.0 on pci0
cardbus0: <CardBus bus> on cbb0
pccard0: <16-bit PCCard bus> on cbb0
atapci0: <AcerLabs Aladdin UDMA100 controller> port 0x8080-0x808f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 16.0 on pci0
ata0: channel #0 on atapci0
ata1: channel #1 on atapci0
pci0: <bridge, PCI-unknown> at device 17.0 (no driver attached)
sis0: <NatSemi DP8381[56] 10/100BaseTX> port 0x8c00-0x8cff mem 0xd0003000-0xd0003fff irq 11 at device 18.0 on pci0
sis0: Silicon Revision: DP83816A
miibus0: <MII bus> on sis0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
sis0: Ethernet address: 00:0b:cd:e9:de:63
sis0: [GIANT-LOCKED]
acpi_button0: <Power Button> on acpi0
acpi_lid0: <Control Method Lid Switch> on acpi0
acpi_acad0: <AC Adapter> on acpi0
acpi_cmbat0: <Control Method Battery> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse, device ID 3
ppc0 port 0x778-0x77f,0x378-0x37f irq 7 drq 0 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/16 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A, console
orm0: <ISA Option ROMs> at iomem 0xe0000-0xe3fff,0xdf000-0xdffff,0xcf000-0xcf7ff,0xc0000-0xcefff on isa0
pmtimer0 on isa0
fdc0: ready for input in output
fdc0: cmd 3 failed at out byte 1 of 3
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x100>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 1855197374 Hz quality 800
Timecounters tick every 10.000 msec
ad0: 28615MB <IC25N030ATMR04-0/MOAOAD0A> [58140/16/63] at ata0-master UDMA100


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x24
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc06513b6
stack pointer           = 0x10:0xc0c21ba4
frame pointer           = 0x10:0xc0c21ba4
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         = 0 (swapper)
[thread 0]
Stopped at      rman_get_bustag+0x6:    movl    0x24(%eax),%eax
db> trace
rman_get_bustag(0) at rman_get_bustag+0x6
ata_pci_dmastart(c14a0c00) at ata_pci_dmastart+0x14
ata_generic_transaction(c15b6b40) at ata_generic_transaction+0x2b3
ata_start(c14a0c00,c14a0d20,0,c07feb5b,57) at ata_start+0x17f
ata_queue_request(c15b6b40,c062ff7c,c14a0d20,1,c082d4e9) at ata_queue_request+0x185
ad_start(c14a0ca8) at ad_start+0x2a2
ata_start(c14a0c00,c1554d00,0,0,c0c21cb0) at ata_start+0x64
adstrategy(c1554d00) at adstrategy+0x61
ar_rw(c155ed80,37e3e01,800,c1593800,5) at ar_rw+0x8d
ar_promise_read_conf(c155ed80,c1521700,1,c155ed80,10b9) at ar_promise_read_conf+0xb7
ata_raiddisk_attach(c155ed80,c155ed80,c155ed00,58561059,0) at ata_raiddisk_attach+0x18c
ad_attach(c14a0ca8) at ad_attach+0x2a0
ata_boot_attach(0) at ata_boot_attach+0x40
run_interrupt_driven_config_hooks(0,c1ec00,c1e000,0,c0441a15) at run_interrupt_driven_config_hooks+0x18
mi_startup() at mi_startup+0x96
begin() at begin+0x2c
db> 
-- 
It is not tinfoil, it is my new skin.  I am a robot.