Panic at boot time

Hi

I've been getting this panic at boot time for last few weeks.  The
last kernel that works is of around Wed Jan  7 15:23:38 SAST 2004.

Random datapoints:
   Gigabyte 686DLX motherboard with 2 PentiumII CPUs
   I've noticed that ACPI has been working more and more poorly
      with this motherboard.
   I think this is related to ACPI brokenness because the working
   kernel panics in exactly the same way if I set hint.acpi.0.disabled="1".

Here's the panic message.  Sadly there is no crashdump.

I have time to try things and do more debugging on request.

Ian

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 5.2-CURRENT #5: Thu Jan 29 18:25:49 SAST 2004
    ianf_at_brane-dead.freislich.nom.za:/usr/src/sys/i386/compile/BRANE-DEAD
Preloaded elf kernel "/boot/kernel/kernel" at 0xc0787000.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc0787244.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Pentium II/Pentium II Xeon/Celeron (267.27-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x634  Stepping = 4
  Features=0x80fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,MMX>
real memory  = 201261056 (191 MB)
avail memory = 191283200 (182 MB)
MPTable: <OEM00000 PROD00000000>
kernel trap 12 with interrupts disabled


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x1c
fault code              = supervisor write, page not present
instruction pointer     = 0x8:0xc05dcbb3
stack pointer           = 0x10:0xc0821b34
frame pointer           = 0x10:0xc0821c2c
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 ()
trap number             = 12
panic: page fault
at line 821 in file ../../../i386/i386/trap.c
cpuid = 0; 
Stack backtrace:
backtrace(c06549a9,0,335,c0672265,100) at backtrace+0x17
__panic(c0672265,335,c06501df,c06720bd,1) at __panic+0x15d
trap_fatal(c0821af4,1c,1010101,1010101,c06a8a00) at trap_fatal+0x376
trap_pfault(c0821af4,0,1c,1010101,1c) at trap_pfault+0x252
trap(c0090018,c0c30010,c0c30010,c009f000,c0c3b000) at trap+0x30d
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc05dcbb3, esp = 0xc0821b34, ebp = 0xc0821c2c ---
vm_fault(c0c3b000,c009f000,2,0,c06a8a00) at vm_fault+0x273
trap_pfault(c0821cac,0,c009f000,20821c88,c009f000) at trap_pfault+0x1e4
trap(18,10,7070010,18e,c069dc40) at trap+0x30d
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0xc061bce3, esp = 0xc0821cec, ebp = 0xc0821d00 ---
install_ap_tramp(c06bd340,c06716d7,0,1,c050f3a7) at install_ap_tramp+0x53
start_all_aps(c06bd1c0,c06715cc,0,1,8) at start_all_aps+0x45
cpu_mp_start(c06b1520,c0661f3d,0,1,c0697530) at cpu_mp_start+0x21f
mp_start(0,81ec00,81e000,81ec00,81e000) at mp_start+0x60
mi_startup() at mi_startup+0xb5
begin() at begin+0x2c
Uptime: 1s
WARNING: Driver mistake: make_dev(geom.ctl) called before SI_SUB_DRIVERS
panic: kthread_create called too soon
at line 84 in file ../../../kern/kern_kthread.ccpuid = 0; 
Uptime: 1s


This next paragraph repeats as many times as it can at 9600bps in 30 seconds



Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x38
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc0506e4c
stack pointer           = 0x10:0xc081efe8
frame pointer           = 0x10:0xc081eff8
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 ()
trap number             = 12
panic: page fault
at line 821 in file ../../../i386/i386/trap.ccpuid = 0; 
Uptime: 1s



--
Ian Freislich