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From: J Wunsch <j@uriah.heep.sax.de>
Message-Id: <199508111957.VAA06241@uriah.heep.sax.de>
Subject: Re: KERNEL BUG !!!! (fwd)
To: moriya@ifi.unicamp.br (Alexandre Moriya - esp)
Date: Fri, 11 Aug 1995 21:57:13 +0200 (MET DST)
Cc: bugs@FreeBSD.org
In-Reply-To: <199508111801.PAA03031@terra.ifi.unicamp.br> from "Alexandre Moriya - esp" at Aug 11, 95 03:01:06 pm
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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As Alexandre Moriya - esp wrote:
> 
> > > instruction pointer		= 0x8:0xf011efdc

> f011efb8 T _getsockopt
> f011f098 T _pipe

This looks rather suspicious.  getsockopt() is a socket-related
(IP-network-related) function and totally unrelated to the CDROM code.

I guess there will only be a chance if somebody else can reproduce the
bug, unless you are able to try debugging it yourself.  Try the
following:

Before it's crashing, enter

	dumpon /dev/sd0b

as root.  This will enable kernel core dumping.  After the crash, the
kernel will save a copy of its image under /var/crash at the time of
reboot.  After the system came up again:

	gdb -k /var/crash/*.0

and once you see the (kgdb) prompt:

	where

Tell us the output of this command.

(I'm also trying to have a friend running a box with 6 CD drives
reproduce this.)

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)