Fatal trap 12

[Chris Readle]

Hi all,

New to FBSD, and in the process of moving my Linux/Windows PC to
FBSD/Windows.

I got two spontaneous reboots last night (the first times it happened) and
I got fatal trap 12s in /var/log/messages each time.  I wasn't doing
anything too heavy, just a make index && make readmes on my ports,
listening to some music through XMMS and browsing the web via Mozilla.

I searched the archives and the FAQ.  I haven't built a debugging kernel
yet, but I thought I would post the info I have in the hopes that someone
might be able to help.

I did do an nm - n on the kernel, however.

uname -a:
FreeBSD creadle.oc.cox.net 4.8-RELEASE-p13 FreeBSD 4.8-RELEASE-p13 #4: Wed
Oct 15 08:55:21 PDT 2003    
chris at creadle.oc.cox.net:/usr/obj/usr/src/sys/CREADLE  i386

/var/log/messages:
Oct 14 21:45:23 creadle /kernel: Fatal trap 12: page fault while in kernel
mode
Oct 14 21:45:23 creadle /kernel: fault virtual address  = 0xbfca02c8
Oct 14 21:45:23 creadle /kernel: fault code             = supervisor read,
page not present
Oct 14 21:45:23 creadle /kernel: instruction pointer    = 0x8:0xc028fe83
Oct 14 21:45:23 creadle /kernel: stack pointer          = 0x10:0xd2cfbcf8
Oct 14 21:45:23 creadle /kernel: frame pointer          = 0x10:0xd2cfbd08
Oct 14 21:45:23 creadle /kernel: code segment           = base 0x0, limit
0xfffff, type 0x1b
Oct 14 21:45:23 creadle /kernel: = DPL 0, pres 1, def32 1, gran 1
Oct 14 21:45:23 creadle /kernel: processor eflags       = interrupt
enabled, resume, IOPL = 0
Oct 14 21:45:23 creadle /kernel: current process                = 73961
(sh)
Oct 14 21:45:23 creadle /kernel: interrupt mask         = net tty bio cam
Oct 14 21:45:23 creadle /kernel: trap number            = 12
Oct 14 21:45:23 creadle /kernel: panic: page fault

nm -n:
creadle# nm -n /kernel | grep c028fe8
c028fe88 T pmap_ts_referenced
creadle# nm -n /kernel | grep c028fe
c028fe7c T pmap_phys_address
c028fe88 T pmap_ts_referenced

I did two because I thought it was odd that the first one came up with a
higher address than the actual pointer.

Any good suggestions?

chris


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