Re: neigh_create/inetdev_destroy race?

On Sat, 14 Aug 2004 16:27:03 +1000
Herbert Xu [off-list ref] wrote:

Is there any thing that prevents the following scenario from occuring?

CPU0					CPU1
neigh_create
					inet_del_ifa
						notifier_call_chain
							neigh_ifdown
						inetdev_destroy
	arp_constructor
		neigh->parms =
			in_dev->arp_parms
							in_dev->dead = 1
							in_dev->dev->ip_ptr =
								NULL
							neigh_parms_release
	n->parms->neigh_setup => BUG

Is there anything other than hostess_sv11.c, sealevel.c, and shaper.c
which are using n->parms->neigh_setup at all?

This seems to be a very obscure special case hack, which perhaps we
can removee entirely.