Hi!

I had this issue not long ago and it turned out to be a hardware issue.
The memory was bad. I was able to recreate this by running some command
like:
find / -name file_that_doesnt_exist -print
(just so that it will go thru the whole FS).

It would puke almost instantly. We replaced the memory and
it never happened again.

hope this helps

-pranav

*******************************************************************
Pranav A. Desai


On Fri, 7 Nov 2003, Chris Hastie wrote:

> I have a nasty feeling that this may be a hardware problem rather than
> FreeBSD, but any pointers appreciated.
>
> Over the last couple of days, with no changes in configuration, one of
> my boxes has started to die with increasing frequency, throwing up
> errors like this:
>
> Fatal trap 12: Page trap while in kernel mode
> Fault virtual address           = 0x2c2
> fault code                      = supervisor writ, page not present
> instruction pointer             = 0x8:0xc0272faf
> stack pointer                   = 0x10:0xd54e8cf4
> frame pointer                   = 0x10:0xd54e8d0c
> code segment                    = bas 0x0, limit 0xffffff, type 0x1b
>                                 = DPL0, pres1, def 32 1, gran1
> processor eflags                = interrupt enabled, resume, IOPL = 0
> current process                 = 15 (random)
> trap number                     = 12
> panic: page fault
> syncing disks, buffers remaining... panic: free locked buf
> Terminate ACPI
>
> Although it announces that it is about to reboot, it just goes to a
> blank console in which even the reset button has no effect (actually it
> does cause the HDD LED to flicker for a few seconds).
>
> Increasingly, cycling the power goes to the same foreboding blank
> monitor without even a murmur from the BIOS, let alone an attempt to
> boot FreeBSD.
>
> All the hardware is around two months old - an MSI KM2M motherboard with
> AMD Athlon 2200, 512MB RAM and 2 x 60 GB HDD in software RAID 1 using
> Vinum. FreeBSD is 5.1 RELEASE.
> --
> Chris Hastie
> _______________________________________________
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