netfilter: nf_conntrack_proto_gre: switch to register_pernet_gen_subsys()
register_pernet_gen_device() can't be used is nf_conntrack_pptp module is also used (compiled in or loaded). Right now, proto_gre_net_exit() is called before nf_conntrack_pptp_net_exit(). The former shutdowns and frees GRE piece of netns, however the latter absolutely needs it to flush keymap. Oops is inevitable. Switch to shiny new register_pernet_gen_subsys() to get correct ordering in netns ops list. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -335,7 +335,7 @@ static int __init nf_ct_proto_gre_init(void)
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rv = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_gre4);
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if (rv < 0)
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return rv;
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rv = register_pernet_gen_device(&proto_gre_net_id, &proto_gre_net_ops);
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rv = register_pernet_gen_subsys(&proto_gre_net_id, &proto_gre_net_ops);
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if (rv < 0)
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nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4);
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return rv;
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@ -344,7 +344,7 @@ static int __init nf_ct_proto_gre_init(void)
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static void nf_ct_proto_gre_fini(void)
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{
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nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4);
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unregister_pernet_gen_device(proto_gre_net_id, &proto_gre_net_ops);
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unregister_pernet_gen_subsys(proto_gre_net_id, &proto_gre_net_ops);
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}
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module_init(nf_ct_proto_gre_init);
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