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Date:      Wed, 21 May 2003 22:17:15 +0900
From:      AIDA Shinra <shinra@j10n.org>
To:        current@freebsd.org
Subject:   Re: Reproducable panic in in6_pcbbind
Message-ID:  <86k7ck4exw.wl@j10n.org>
In-Reply-To: <20030521065152.GA725@laptop.6bone.nl>
References:  <1053466303.815.22.camel@owen1492.uf.corelab.com> <20030521065152.GA725@laptop.6bone.nl>

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> 
> On Tue, May 20, 2003 at 04:31:44PM -0500, Craig Boston wrote:
> > td=0x0 looks bad, and it seems really weird that nam and td change in
> > the call to tcp6_usr_bind since sobind just calls it with the same
> > arguments it was given.  Stack corruption maybe?  sobind should have
> > choked on the null pointer long before it ever got to tcp6_usr_bind...
> 
> I had something similar some weeks/months ago. It also happened with
> closing and reopening an ssh forwarding session (no socks however afaik).
> 
> I'm running with some debugging statements in my tree for the event that
> it happens again. Are you running -current as of recent or an older one?
> 
> My stack was also corrupted as that code can't be reached at all with
> td==0.
> 
> Mark
> 
I experienced the same kgdb trace last manth. I found the crashdump
lied about where the trap occured. What DDB prints? If the true trap
point is at in6_pcbbind() in netinet6/in6_pcb.c, the problem may be
same to kern/50621.



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