Re: Re: [PATCH] netfilter: ipv4: fix NULL dereference

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On Fri, Mar 25, 2016 at 02:38:15PM +0800, Liping Zhang wrote:
> At 2016-03-25 04:22:05, "Pablo Neira Ayuso" <pablo@xxxxxxxxxxxxx> wrote:
> >
> >Could you also pass net as parameter to synproxy_send_server_syn() ?
> >
> >par->net provides this from synproxy_tg4().
> 
> Not pass the net but replace the first parameter 'snet' with 'net' seems better?
> snet is only used in synproxy_recv_client_ack->synproxy_send_server_syn call path,
> and in other call path, actually we only need net,  and we can call synproxy_pernet(net)
> to get the snet.
> 
> like follows:
> -synproxy_send_server_syn(const struct synproxy_net *snet,
> +synproxy_send_server_syn(struct net *net,
> 
> -synproxy_recv_client_ack(const struct synproxy_net *snet,
> +synproxy_recv_client_ack(struct net *net,
>                          const struct sk_buff *skb, const struct tcphdr *th,
>                          struct synproxy_options *opts, u32 recv_seq)
>  {
> +       struct synproxy_net *snet = synproxy_pernet(net);

Fine with me.
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