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Date:      Fri, 9 Apr 2004 20:13:15 -0700
From:      Kris Kennaway <kris@obsecurity.org>
To:        David Magda <dmagda@ee.ryerson.ca>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: panic on 4.x using star to /dev/nsa0
Message-ID:  <20040410031315.GA65829@xor.obsecurity.org>
In-Reply-To: <25650060-8A8C-11D8-9C7E-000A95B96FF8@ee.ryerson.ca>
References:  <25650060-8A8C-11D8-9C7E-000A95B96FF8@ee.ryerson.ca>

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On Fri, Apr 09, 2004 at 09:12:33PM -0400, David Magda wrote:

> This has only happened once so far so I haven't filed a PR in case it's=
=20
> not reproducible. Since I have the kernel dump I can give more=20
> information if needed if someone would be willing to tell me what to=20
> type into the debugger's CLI. Don't have much experience in this since=20
> I haven't had many panics under FreeBSD. :> (Is there a document=20
> describing this?  A kind of "what happens if the system panics"=20
> FAQ/HOWTO.)

The chapter on kernel debugging in the Developers Handbook explains
how to build a debugging kernel and use it to extract a traceback
suitable for someone to diagnose a kernel panic.

Kris

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