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Date:      Mon, 22 Jan 2007 14:16:32 -0500
From:      Kris Kennaway <kris@obsecurity.org>
To:        Jay Chandler <chandler@chapman.edu>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: Page Faulting Box?
Message-ID:  <20070122191632.GA12975@xor.obsecurity.org>
In-Reply-To: <45B5019B.6070804@chapman.edu>
References:  <45B5019B.6070804@chapman.edu>

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On Mon, Jan 22, 2007 at 10:25:31AM -0800, Jay Chandler wrote:
> One of our servers is restarting at random.  Not entirely sure what=20
> causes it-- hopefully someone here can help me track it down

Often it's bad hardware, especially if only manifesting onone server
out of several with the same hardware and workload.

> (I suspect=20
> hardware at some point, potentially the Broadcom NIC).
>=20
> This is what's in the messages log-- what else can I provide y'all with?

The backtrace from the crashdump, or at the very least look up the IP
in the kernel.debug.  See the developers handbook chapter on kernel
debugging.

Kris

>=20
> Jan 22 10:16:55 montreal kernel: kernel trap 12 with interrupts disabled
> Jan 22 10:16:55 montreal kernel:
> Jan 22 10:16:55 montreal kernel:
> Jan 22 10:16:55 montreal kernel: Fatal trap 12: page fault while in=20
> kernel mode
> Jan 22 10:16:55 montreal kernel: cpuid =3D 2; apic id =3D 06
> Jan 22 10:16:55 montreal kernel: fault virtual address  =3D 0x104
> Jan 22 10:16:55 montreal kernel: fault code             =3D supervisor=20
> read, page not present
> Jan 22 10:16:55 montreal kernel: instruction pointer    =3D 0x20:0xc066c7=
31
> Jan 22 10:16:55 montreal kernel: stack pointer          =3D 0x28:0xe4f99c=
90
> Jan 22 10:16:55 montreal kernel: frame pointer          =3D 0x28:0xe4
> Jan 22 10:16:55 montreal kernel: f99c9c
> Jan 22 10:16:55 montreal kernel:
> Jan 22 10:16:55 montreal kernel: code segment           =3D base 0x0,=20
> limit 0xfffff, type 0x1b
> Jan 22 10:16:55 montreal kernel: =3D DPL 0, pres 1, def32 1, gran 1
> Jan 22 10:16:55 montreal kernel:
> Jan 22 10:16:55 montreal kernel: processor eflags       =3D resume, IOPL =
=3D 0
> Jan 22 10:20:58 montreal syslogd: kernel boot file is /boot/kernel/kernel
>=20
>=20
> --=20
> Jay Chandler
> Network Administrator, Chapman University
> 714.628.7249 / chandler@chapman.edu
> Today's Excuse: excess surge protection=20
>=20
> _______________________________________________
> freebsd-questions@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o=
rg"
>=20

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