From owner-freebsd-current  Mon Jan 25 15:38:22 1999
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	Mon, 25 Jan 1999 18:37:55 -0500 (EST)
Date: Mon, 25 Jan 1999 18:37:55 -0500 (EST)
From: Brian Feldman <green@unixhelp.org>
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To: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
cc: Alfred Perlstein <bright@hotjobs.com>, current@FreeBSD.ORG
Subject: Re: dummynet causes crash?
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On Sun, 24 Jan 1999, Luigi Rizzo wrote:

> which version of ip_dummynet are you using. There were lately a few
> changes to fix a problem related to route entries being freed in the
> wrong way.
> 
> > .(02:36:11)(root@bright.reserved)
> > ipfw add pipe 1 ip from server to cvsup.freebsd.org 
> > (long pause i assume DNS)
> > 00000 pipe 1 ip from 192.168.2.20 to 198.104.92.71
> ...
> > 
> > Fatal trap 12: page fault while in kernel mode
> > fault virtual address	= 0xdeadc116
> 
> interestingly enough, the above address is "0xdeadbeef + 551 (decimal)".
> It looks like somehow a wrong route entry was passed to ether_output().
> 
> > the only thing i can think of is that dummynet doesn't like not being told
> > if a pipe is 'in' or 'out' :/
> 
> nope -- it can detect this by itself. the problem must be elsewhere.
> if you have more input on the dummynet version (as per the CVS log)
> and os version please let me know.
> 
> > my ether card is a: ed card, a 'realteck 8029'
> 
> ... and the network card does not make a difference, dummynet works at
> a layer above.
> 
> 	cheers
> 	luigi

{"/home/green"}$ calc 0xdeadc116 - 0xdeadc0de
        56
possibly? IIRC 0xdeadc0de is used to fill freed memory areas in certain cases,
to help detect programming errors related to such.

> 
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 Brian Feldman					  _ __  ___ ___ ___  
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