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-rw-r--r--net/netfilter/xt_recent.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c
index 4635c9b00459..dab053e2a1a2 100644
--- a/net/netfilter/xt_recent.c
+++ b/net/netfilter/xt_recent.c
@@ -431,7 +431,8 @@ static void recent_mt_destroy(const struct xt_mtdtor_param *par)
list_del(&t->list);
spin_unlock_bh(&recent_lock);
#ifdef CONFIG_PROC_FS
- remove_proc_entry(t->name, recent_net->xt_recent);
+ if (recent_net->xt_recent != NULL)
+ remove_proc_entry(t->name, recent_net->xt_recent);
#endif
recent_table_flush(t);
kfree(t);
@@ -615,6 +616,20 @@ static int __net_init recent_proc_net_init(struct net *net)
static void __net_exit recent_proc_net_exit(struct net *net)
{
+ struct recent_net *recent_net = recent_pernet(net);
+ struct recent_table *t;
+
+ /* recent_net_exit() is called before recent_mt_destroy(). Make sure
+ * that the parent xt_recent proc entry is is empty before trying to
+ * remove it.
+ */
+ spin_lock_bh(&recent_lock);
+ list_for_each_entry(t, &recent_net->tables, list)
+ remove_proc_entry(t->name, recent_net->xt_recent);
+
+ recent_net->xt_recent = NULL;
+ spin_unlock_bh(&recent_lock);
+
proc_net_remove(net, "xt_recent");
}
#else
@@ -638,9 +653,6 @@ static int __net_init recent_net_init(struct net *net)
static void __net_exit recent_net_exit(struct net *net)
{
- struct recent_net *recent_net = recent_pernet(net);
-
- BUG_ON(!list_empty(&recent_net->tables));
recent_proc_net_exit(net);
}