PLEASE read this:
http://www.freebsd.org/FAQ/hackers.html#AEN4885
Basically, by just looking at the page fault message, this appears to
be the dereferencing of a NULL pointer. That's all that I'm afraid pretty
much anybody will be able to conclude from this unless you, at least,
provide us with a backtrace as well as an assembly dump of whatever
function the crash occured in.
On Tue, 22 Aug 2000, Patrick Gardella wrote:
> I've been working for a while to try to figure out a problem I'm having
> here.
>
> I did a buildworld Sunday, and started to get kernel panics on boot when
> it probed fxp. So I removed fxp from my kernel and loaded it as a
> module (via loader.conf.local). It paniced. Then I unloaded the
> if_fxp.ko on startup, and it booted. But if I load the fxp module now,
> after a full boot, everything is great. Rebooting with fxp in the
> kernel or loading the module on boot will cause a panic *every* time.
>
> Thinking it might be build problem, I redid the build/install/kernel
> again on Monday, and am having the same problems. The panics only
> started on the upgrade from a -current dated sometime in early July.
>
> As you will see from below, this is an SMP machine (dual P200) with 256
> Megs RAM.
> I am also using NETGRAPH to run PPPoE.
>
> Any ideas?
>
> Patrick
>
> The panic is:
> Fatal trap 12: page fault while in kernel mode
> mp_lock=00000005; cpuid = 0; lapic.id=00000000
> fault virtual address = 0x0
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc034e304
> stack pointer = 0x10:0xc038bea8
> frame pointer = 0x10=0xc038bebc
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPC 0, pres 1, def 32 1, gran 1
> processor eflag = interrupt enabled, resume, IOPC=0
> current process = 0 (swapper)
> interrupt mask = net tty bio cam <- SMP:XXX
> trap number = 12
> panic: page fault
Cheers,
Bosko.
--
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