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100 lines
2.8 KiB
100 lines
2.8 KiB
From: Vasily Averin <vvs@virtuozzo.com>
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Date: Sun, 12 Nov 2017 14:32:37 +0300
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Subject: [PATCH] netfilter: exit_net cleanup check added
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Be sure that lists initialized in net_init hook was return to initial
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state.
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Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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---
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--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
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+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
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@@ -835,6 +835,7 @@ static void clusterip_net_exit(struct ne
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cn->procdir = NULL;
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#endif
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nf_unregister_net_hook(net, &cip_arp_ops);
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+ WARN_ON_ONCE(!list_empty(&cn->configs));
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}
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static struct pernet_operations clusterip_net_ops = {
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--- a/net/netfilter/nf_tables_api.c
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+++ b/net/netfilter/nf_tables_api.c
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@@ -6563,6 +6563,12 @@ static int __net_init nf_tables_init_net
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return 0;
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}
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+static void __net_exit nf_tables_exit_net(struct net *net)
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+{
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+ WARN_ON_ONCE(!list_empty(&net->nft.af_info));
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+ WARN_ON_ONCE(!list_empty(&net->nft.commit_list));
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+}
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+
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int __nft_release_basechain(struct nft_ctx *ctx)
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{
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struct nft_rule *rule, *nr;
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@@ -6640,6 +6646,7 @@ static void __nft_release_afinfo(struct
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static struct pernet_operations nf_tables_net_ops = {
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.init = nf_tables_init_net,
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+ .exit = nf_tables_exit_net,
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};
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static int __init nf_tables_module_init(void)
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--- a/net/netfilter/nfnetlink_log.c
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+++ b/net/netfilter/nfnetlink_log.c
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@@ -1093,10 +1093,15 @@ static int __net_init nfnl_log_net_init(
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static void __net_exit nfnl_log_net_exit(struct net *net)
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{
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+ struct nfnl_log_net *log = nfnl_log_pernet(net);
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+ unsigned int i;
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+
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#ifdef CONFIG_PROC_FS
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remove_proc_entry("nfnetlink_log", net->nf.proc_netfilter);
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#endif
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nf_log_unset(net, &nfulnl_logger);
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+ for (i = 0; i < INSTANCE_BUCKETS; i++)
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+ WARN_ON_ONCE(!hlist_empty(&log->instance_table[i]));
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}
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static struct pernet_operations nfnl_log_net_ops = {
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--- a/net/netfilter/nfnetlink_queue.c
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+++ b/net/netfilter/nfnetlink_queue.c
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@@ -1510,10 +1510,15 @@ static int __net_init nfnl_queue_net_ini
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static void __net_exit nfnl_queue_net_exit(struct net *net)
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{
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+ struct nfnl_queue_net *q = nfnl_queue_pernet(net);
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+ unsigned int i;
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+
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nf_unregister_queue_handler(net);
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#ifdef CONFIG_PROC_FS
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remove_proc_entry("nfnetlink_queue", net->nf.proc_netfilter);
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#endif
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+ for (i = 0; i < INSTANCE_BUCKETS; i++)
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+ WARN_ON_ONCE(!hlist_empty(&q->instance_table[i]));
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}
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static void nfnl_queue_net_exit_batch(struct list_head *net_exit_list)
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--- a/net/netfilter/x_tables.c
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+++ b/net/netfilter/x_tables.c
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@@ -1785,8 +1785,17 @@ static int __net_init xt_net_init(struct
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return 0;
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}
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+static void __net_exit xt_net_exit(struct net *net)
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+{
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+ int i;
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+
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+ for (i = 0; i < NFPROTO_NUMPROTO; i++)
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+ WARN_ON_ONCE(!list_empty(&net->xt.tables[i]));
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+}
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+
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static struct pernet_operations xt_net_ops = {
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.init = xt_net_init,
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+ .exit = xt_net_exit,
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};
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static int __init xt_init(void)
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