Commit 0d98da5d authored by Gao feng's avatar Gao feng Committed by Pablo Neira Ayuso
Browse files

netfilter: nf_conntrack: register pernet subsystem before register L4 proto

In (c296bb4d

 netfilter: nf_conntrack: refactor l4proto support for netns)
the l4proto gre/dccp/udplite/sctp registration happened before the pernet
subsystem, which is wrong.

Register pernet subsystem before register L4proto since after register
L4proto, init_conntrack may try to access the resources which allocated
in register_pernet_subsys.
Reported-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarGao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent cca7af38
......@@ -969,6 +969,10 @@ static int __init nf_conntrack_proto_dccp_init(void)
{
int ret;
ret = register_pernet_subsys(&dccp_net_ops);
if (ret < 0)
goto out_pernet;
ret = nf_ct_l4proto_register(&dccp_proto4);
if (ret < 0)
goto out_dccp4;
......@@ -977,16 +981,12 @@ static int __init nf_conntrack_proto_dccp_init(void)
if (ret < 0)
goto out_dccp6;
ret = register_pernet_subsys(&dccp_net_ops);
if (ret < 0)
goto out_pernet;
return 0;
out_pernet:
nf_ct_l4proto_unregister(&dccp_proto6);
out_dccp6:
nf_ct_l4proto_unregister(&dccp_proto4);
out_dccp4:
unregister_pernet_subsys(&dccp_net_ops);
out_pernet:
return ret;
}
......
......@@ -420,18 +420,18 @@ static int __init nf_ct_proto_gre_init(void)
{
int ret;
ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_gre4);
if (ret < 0)
goto out_gre4;
ret = register_pernet_subsys(&proto_gre_net_ops);
if (ret < 0)
goto out_pernet;
ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_gre4);
if (ret < 0)
goto out_gre4;
return 0;
out_pernet:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_gre4);
out_gre4:
unregister_pernet_subsys(&proto_gre_net_ops);
out_pernet:
return ret;
}
......
......@@ -888,6 +888,10 @@ static int __init nf_conntrack_proto_sctp_init(void)
{
int ret;
ret = register_pernet_subsys(&sctp_net_ops);
if (ret < 0)
goto out_pernet;
ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_sctp4);
if (ret < 0)
goto out_sctp4;
......@@ -896,16 +900,12 @@ static int __init nf_conntrack_proto_sctp_init(void)
if (ret < 0)
goto out_sctp6;
ret = register_pernet_subsys(&sctp_net_ops);
if (ret < 0)
goto out_pernet;
return 0;
out_pernet:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_sctp6);
out_sctp6:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_sctp4);
out_sctp4:
unregister_pernet_subsys(&sctp_net_ops);
out_pernet:
return ret;
}
......
......@@ -371,6 +371,10 @@ static int __init nf_conntrack_proto_udplite_init(void)
{
int ret;
ret = register_pernet_subsys(&udplite_net_ops);
if (ret < 0)
goto out_pernet;
ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_udplite4);
if (ret < 0)
goto out_udplite4;
......@@ -379,16 +383,12 @@ static int __init nf_conntrack_proto_udplite_init(void)
if (ret < 0)
goto out_udplite6;
ret = register_pernet_subsys(&udplite_net_ops);
if (ret < 0)
goto out_pernet;
return 0;
out_pernet:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udplite6);
out_udplite6:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udplite4);
out_udplite4:
unregister_pernet_subsys(&udplite_net_ops);
out_pernet:
return ret;
}
......
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