Re: neigh_create/inetdev_destroy race?

["David S. Miller" <davem@xxxxxxxxxx>]

On Sat, 14 Aug 2004 16:27:03 +1000
Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> 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.