ipv6 panic in 6.0 ([kris@FreeBSD.org: kern/85780: 'panic: bogus refcnt 0' in routing/ipv6])

[Kris Kennaway]

On Wed, Sep 28, 2005 at 12:06:18PM +0900, SUZUKI Shinsuke wrote:
> Hello kris,
> 
> >>>>> On Tue, 27 Sep 2005 18:26:34 -0400
> >>>>> kris at obsecurity.org(Kris Kennaway)  said:
> 
> > Can someone please look into this ipv6 panic?  It is now my #1 panic
> > on 6.0 (every few days, and I hardly make any use of ipv6 except for
> > light nfs and tcp traffic), so it would be good to get it fixed before
> > the release.
> 
> Let me confirm one thing.
> Did you also see a message "panic: bogus refcnt 0", in your panic?

Yes, that's the panic string.

> As far as I investigated, only IF_CLONE_REMREF_LOCKED() can display
> this message.  But it's called only in
> if_clone_create/detach/destory(), and none of them seems to be called
> according to the description in the PR.  (rtexpunge() in route.c also
> has this message, but it is commented out by "if 0", so it is not the
> cause of this message)

I have a number of (sparc64) cores for this panic if you'd like to see
them.

Kris
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