Hi,

Yesterday I installed NetBSD 1.5.2 from CD onto an i386 machine. It seemed
OK at the time but overnight it crashed:

>uvm_fault(xc0545360, 0xc2100000, 0, 1) -> 5
>kernel: page fault trap, code=0
>Stopped in syslogd at   0xc2100d18:    invalid address

The machine has previously run Windows 9x, Linux (Slackware and Mandrake)
and FreeBSD 4.5 (for a short time) stably.

$ dmesg
NetBSD 1.5.2 (GENERIC) #3: Sat Aug 18 23:37:05 CEST 2001
    he@hamster.urc.uninett.no:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: AMD K6 (586-class), 300.01 MHz
total memory = 127 MB
avail memory = 113 MB
using 1659 buffers containing 6636 KB of memory
BIOS32 rev. 0 found at 0xfb100
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled
pchb0 at pci0 dev 0 function 0
pchb0: VIA Technologies VT82C595 (Apollo VP2) Host-PCI Bridge (rev. 0x06)
pcib0 at pci0 dev 7 function 0
pcib0: VIA Technologies VT82C586 (Apollo VP) PCI-ISA Bridge (rev. 0x27)
pciide0 at pci0 dev 7 function 1: VIA Technologies VT82C586 (Apollo VP) ATA33 controller
pciide0: bus-master DMA support present
pciide0: primary channel configured to compatibility mode
atapibus0 at pciide0 channel 0
cd0 at atapibus0 drive 1: <MATSHITA CR-588, , LS13> type 5 cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2
wd0 at pciide0 channel 0 drive 0: <IBM-DTLA-307045>
wd0: drive supports 16-sector pio transfers, lba addressing
wd0: 32253 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 66055244 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5
pciide0: primary channel interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (using DMA data transfers)
cd0(pciide0:0:1): using PIO mode 4, DMA mode 2 (using DMA data transfers)
pciide0: secondary channel configured to compatibility mode
pciide0: disabling secondary channel (no drives)
ex0 at pci0 dev 10 function 0: 3Com 3c905C-TX 10/100 Ethernet with mngmt (rev. 0x74)
ex0: interrupting at irq 10
ex0: MAC address 00:01:02:28:6d:7e
ukphy0 at ex0 phy 24: Generic IEEE 802.3u media interface
ukphy0: OUI 0x001018, model 0x0017, rev. 6
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
vga1 at pci0 dev 11 function 0: Cirrus Logic CL-GD5480 (rev. 0x23)
wsdisplay0 at vga1: console (80x25, vt100 emulation)
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
tcic0 at isa0 port 0x240-0x24f iomem 0xd0000-0xdffff: using irq 11
tcic0: Databook DB86082B has sockets A and B
pcmcia0 at tcic0 socket 0
pcmcia1 at tcic0 socket 1
wi0 at pcmcia1 function 0 port 0x380-0x3bf
wi0: address 00:60:1d:04:34:35
isapnp0: no ISA Plug 'n Play devices found
biomask f365 netmask f765 ttymask ffe7
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
pcmcia1: card irq 5
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0

$ uname -a
NetBSD pr-ast.lant 1.5.2 NetBSD 1.5.2 (GENERIC) #3: Sat Aug 18 23:37:05 CEST 2001     he@hamster.urc.uninett.no:/usr/src/sys/arch/i386/compile/GENERIC i386

Any suggestions about what the problem may be or how I may avoid or fix
the bug?

Thanks,

Ian