Kernel Dump

[Forrest W. Christian]

I recently swapped out a motherboard in a FreeBSD server for a new Intel
Pentium 4 motherboard/processor to gain speed.

Since that time, this machine has been randomly panicing such as:

Fatal trap 12: page fault while in kernel mode
mp_lock = 00000003; cpuid = 0; lapic.id = 00000000
fault virtual address   = 0x36
fault code              = supervisor write, page not present
instruction pointer     = 0x8:0xc01f60fe
stack pointer           = 0x10:0xf25cdab8
frame pointer           = 0x10:0xf25cdb58
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         = 454 (perl)
interrupt mask          = net bio cam  <- SMP: XXX
trap number             = 12
panic: page fault
mp_lock = 00000003; cpuid = 0; lapic.id = 00000000
boot() called on cpu#0

>From my symbol table, this particular panic appears to have occured in
vm_fault:

c01f5fcc T vm_fault
c01f6b1c T vm_fault_wire

This appears to be pretty consistent (the instruction pointer).  It used
to panic both where I mentioned above and also in pmap.c.  Since I did the
last cvsup and kernel rebuild, I haven't seen one from the pmap area.

Any ideas?

- Forrest W. Christian (forrestc at imach.com) AC7DE
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