Re: [PATCH] Fix repeatable Oops on container destroy with conntrack

Alexey Dobriyan
2011-09-12T07:25:31Z

On Sat, Sep 10, 2011 at 07:48:43PM +0100, Alex Bligh wrote:
> --- a/net/netfilter/nf_conntrack_netlink.c
> +++ b/net/netfilter/nf_conntrack_netlink.c
> @@ -570,6 +570,11 @@ ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item)
> return 0;
>
> net = nf_ct_net(ct);
> +
> + /* container deinit, netlink may have died before death_by_timeout */
> + if (!net->nfnl)
> + return 0;
> +
> if (!item->report && !nfnetlink_has_listeners(net, group))
> return 0;

If this is correct fix, ->nfnl check should be folded into
nfnetlink_has_listeners(), otherwise expectations aren't covered.