Re: syscons problem in ddb, if_afdata initialization (was: Re: 5.3-BETA3 , panic, probably IPv6+SMP+mpsafenet related)

[ Sorry for the late reply, I was in Zuerich for SuCon and didn't anticipate 
the long(er) time away from mail (certainly my fault, not the organizer's or 
the like). The conference was great, consider attending next year! ]

Back from SuCon and hopefully *finally* back to _full_ coding speed for a 
couple of weeks. If there is work left you want me to take a look at, just 
throw it my way. Sorry for the down-time, delay etc.

On Sunday 05 September 2004 07:52, Robert Watson wrote:
> On Sun, 5 Sep 2004, Sangwoo Shim wrote:
> > I've reported nd6_slowtimo related panic some while ago.  Please check
> > kern/70393.  mlaier_at_ suggested a patch to address this, but that wasn't
> > work for me.  I'll try your patch and report. Thanks.
>
> This patch may only fix the problem if running with debug.mpsafenet=0; I'm
> currently exploring the more general if_afdata issues, and will look at
> Max's patch (etc) in the report.  I hope to have a patch that solves it in
> the non-mpsafenet case in a day or two.
>
> Thanks!
>
> Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
> robert_at_fledge.watson.org      Principal Research Scientist, McAfee Research
>
> > Regards,
> > Sangwoo
> >
> > On Sat, Sep 04, 2004 at 03:33:28PM -0400, Robert Watson wrote:
> > > On Sat, 4 Sep 2004, Jan Srzednicki wrote:
> > > > OK. I'm not sure if I'm doing that the right way, but here it is:
> > >
> > > Yes, this was exactly what I was looking for.  Thanks!
> > >
> > > <snip>
> > >
> > > > Hope this helps.
> > > >
> > > > It's also worth noting that on the previous kernel (that is: FreeBSD
> > > > 5.3-BETA2 (SIN) #9: Sun Aug 29 14:24:19 CEST 2004) nothing like that
> > > > happened, so it appears to be somehow related to (or uncovered by)
> > > > some very recent commit.
> > >
> > > Could you try this patch:
> > >
> > > Index: nd6.c
> > > ===================================================================
> > > RCS file: /home/ncvs/src/sys/netinet6/nd6.c,v
> > > retrieving revision 1.44
> > > diff -u -r1.44 nd6.c
> > > --- nd6.c 23 Aug 2004 03:00:27 -0000 1.44
> > > +++ nd6.c 4 Sep 2004 19:34:39 -0000
> > > _at__at_ -134,6 +134,7 _at__at_
> > >   nd6_init_done = 1;
> > >
> > >   /* start timer */
> > > + callout_init(&nd6_slowtimo_ch, 0);
> > >   callout_reset(&nd6_slowtimo_ch, ND6_SLOWTIMER_INTERVAL * hz,
> > >       nd6_slowtimo, NULL);
> > >  }

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