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Re: page fault in RAMDISK_CD kernel on latest snapshot



Here is a dmesg, ps, and trace from the kernel crash I experienced a
little while ago, with a modified RAMDISK_CD kernel, with option DDB
the only thing added. Any other commands that I to type in ddb, let me
know, I havn't done much kernel debugging.

>> OpenBSD/i386 CDBOOT 1.00
boot>
booting cd0a:/3.6/i386/bsd.rd: 4142500+746156
[52+140576+123893]=0x4ea310U%Q /9!0102*
[ using 264896 bytes of bsd ELF symbol table ]
Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-2005 OpenBSD. All rights reserved.  http://www.OpenBSD.org

OpenBSD 3.6-current (RAMDISK_CD) #0: Sun Feb  6 19:29:53 EST 2005
    root_(_at_)_obsdcurpatch_(_dot_)_hcpnet_(_dot_)_org:/usr/src/sys/arch/i386/compile/RAMDISK_CD
cpu0: Intel(R) Pentium(R) 4 CPU 3.20GHz ("GenuineIntel" 686-class) 3.20 GHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,PNI
real mem  = 133734400 (130600K)
avail mem = 116482048 (113752K)
using 1658 buffers containing 6791168 bytes (6632K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(57) BIOS, date 04/21/04, BIOS32 rev. 0 @ 0xfd880
apm0 at bios0: Power Management spec V1.2
pcibios0 at bios0: rev 2.1 @ 0xfd880/0x780
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdf30/176 (9 entries)
pcibios0: PCI Interrupt Router at 000:07:0 ("Intel 82371FB ISA" rev 0x00)
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1a00! 0xca000/0x1000
0xdc000/0x4000! 0xe4000/0x4000!
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
pci1 at ppb0 bus 1
pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x08
pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA,
channel 0 configured to compatibility, channel 1 configured to
compatibility
pciide0: channel 0 ignored (disabled)
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> SCSI0
5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
"Intel 82371AB Power Mgmt" rev 0x08 at pci0 dev 7 function 3 not configured
vga1 at pci0 dev 15 function 0 "VMware Virtual SVGA II" rev 0x00
wsdisplay0 at vga1: console (80x25, vt100 emulation)
bha3 at pci0 dev 16 function 0 "BusLogic MultiMaster" rev 0x01: irq
11, BusLogic 9xxC SCSI
bha3: model BT-958, firmware 5.07B
bha3: sync, parity
scsibus1 at bha3: 8 targets
sd0 at scsibus1 targ 0 lun 0: <VMware,, VMware Virtual S, 1.0> SCSI2
0/direct fixed
sd0: 2048MB, 1441793 cyl, 5 head, 0 sec, 512 bytes/sec, 4194304 sec total
le1 at pci0 dev 17 function 0 "AMD 79c970 PCnet-PCI" rev 0x10: irq 10
le1: address 00:0c:29:64:9d:be
le1: 8 receive buffers, 2 transmit buffers
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0 (mux 1 ignored for console): console keyboard, using wsdisplay0
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom0: console
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask fbe5 netmask ffe5 ttymask ffe7
rd0: fixed, 3800 blocks
root on rd0a
rootdev=0x1100 rrootdev=0x2f00 rawdev=0x2f02
uvm_fault(0xd050f260, 0x0, 0, 3) -> e
kernel: page fault trap, code=0
Stopped at      microuptime+0x25:       movl    %eax,0(%ebx)
ddb> ps
   PID   PPID   PGRP    UID  S       FLAGS  WAIT       COMMAND
     3      0      0      0  2    0x100204             apm0
     2      0      0      0  2    0x100204             kmthread
     1      0      0      0  2         0x4             swapper
*    0     -1      0      0  7     0x80204             swapper
ddb> trace
microuptime(34,d05eb010,d05eb010,d05eb010,0) at microuptime+0x25
main(0,0,0,0,0) at main+0x4fb
ddb>



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