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Date:      Fri, 9 Mar 2001 02:42:56 +0100 (CET)
From:      Luigi Rizzo <luigi@info.iet.unipi.it>
To:        Ian Dowse <iedowse@maths.tcd.ie>
Cc:        "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net>, phk@critter.freebsd.dk, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject:   Re: cvs commit: src/sys/netinet ip_icmp.c ip_input.c
Message-ID:  <200103090142.CAA44347@info.iet.unipi.it>
In-Reply-To:  <200103082152.aa56671@salmon.maths.tcd.ie> from Ian Dowse at "Mar 8, 2001 09:52:45 pm"

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Rod Grimes noticed that the problem might have to do with the
per-address statistic patch (ip_output.c: 1.99.2.11->1.99.2.12
and related patches to ip_output).
I suspect it might be that (in the lines involved with this patch)
ia becomes null, and also it might
happen with icmp packets. Can you put some checks in the code
and verify this ?

	cheers
	luigi
> :
> >
> >Also this patch doesnt touch ip_output, which is where the panic
> >occurs.
> 
> Yes, the two problems look quite different. The hallmark of the
> icmp_error bug is a fault address where the two high-bytes have
> been swapped (e.g. 0x12c03400), not a NULL deref.
> 
> I haven't managed to match up the short dissassembly posted to
> -stable with the ip_output source code yet - do we have any further
> details now?
> 
> Ian
> 
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