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Date:      Sun, 1 Jun 2003 12:03:56 -0400 (EDT)
From:      Robert Watson <rwatson@freebsd.org>
To:        =?iso-8859-1?q?Magnus=20J?= <magnus_os@yahoo.se>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Fatal trap on RELENG_5_1 SMP
Message-ID:  <Pine.NEB.3.96L.1030601115858.35084C-100000@fledge.watson.org>
In-Reply-To: <20030601080031.75593.qmail@web12902.mail.yahoo.com>

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Could you build your kernel with options DDB and debugging symbols, and
when the kernel drops to the debugger on this panic, copy and past the
stack trace into an e-mail?  Alternatively, or perhaps as well, extract
the information with a core.  There are some excellent instructions on
generating some comprehensive crash reports here:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kernel=
debug.html

This looks like it's a NULL pointer dereference, so the question we need
to answer is: which pointer?  To do that, we'll need to turn that back
into a C line number, which will need the kernel with debugging symbols.

Thanks!

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Network Associates Laboratories

On Sun, 1 Jun 2003, Magnus J wrote:

> Hello everyone
>=20
>=20
> I'm getting a fatal trap when I do 'shutdown' on an SMP-box that
> I did cvsup on RELENG_5_1 yesterday.
> 'reboot' works without any problems.
>=20
> This is the message:
>=20
> Fatal trap 12: page fault while in kernel mode
> cpuid=3D1; lapic.id =3D 01000000
> fault virtual address   =3D 0x0
> fault code              =3D supervisor read, page not present
> instruction pointer     =3D 0x8:0xe0197d11
> stack pointer           =3D 0x10:0xe0197cec
> frame pointer           =3D 0x10:0x8
> code segment            =3D base 0x0, limit 0xfffff, type 0x1b
>                         =3D DPL 0, pres 1, def32 1, gran 1
> processor eflags        =3D interrupt enabled, resume, IOPL =3D 0
> current process         =3D 11 (idle: cpu1)
> trap number             =3D 12
> panic: page fault
> cpuid=3D1; lapic.id =3D 01000000
> boot() called on cpu#1
>=20
>=20
> The machine is a 2x933 MHz PIII, Mainboard is Tyan Tiger 230,
> 1.5 GB RAM.
>=20
> If you need more details, please let me know.
> I'm not a member of this mailing list.
>=20
> Regards
> Magnus
>=20
>=20
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>=20



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