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Date: Fri, 22 Aug 2003 20:10:47 -0500
From: latten@austin.ibm.com
Message-Id: <200308230110.h7N1AkOc019141@faith.austin.ibm.com>
To: davem@redhat.com
Subject: Re: IPSecv6/Neighbor discovery crash
Cc: kazunori@miyazawa.org, netdev@oss.sgi.com
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Sighhhhh and red-face.... I won't make that mistake again.
I'm learning.

OK, yes, it seems to be complaining about dev->hard_header...

Joy


On Fri, 22 Aug 2003 18:12:10 -0500
latten@austin.ibm.com wrote:

> So I do not know where or what are some of
> the values ndisc_output() or ndisc_build_ll_addr() are using.
> Nothing gets written to my log file when I do the ping6.
 ...
> > > EIP is at ndisc_build_ll_hdr+0x17/0x1e0

Why not save yourself all that debugging effort and just
use gdb on the kernel image and:

(gdb) x/10i ndisc_build_ll_hdr+0x17

then match that assembler up with the output of:

bash$ make net/ipv6/ndisc.s

I'm flabbergasted that someone would resort to printk()'s
to figure out the precise location of this OOPS when the
OOPS says exactly the location :(