netfilter: netns ebtables: more cleanup during ebt_unregister_table()

Now that ebt_unregister_table() can be called during netns stop, and module
pinning scheme can't prevent netns stop, do table cleanup by hand.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 82e17527e21e..fa108c46e851 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1209,6 +1209,10 @@ void ebt_unregister_table(struct ebt_table *table)
         mutex_lock(&ebt_mutex);
         list_del(&table->list);
         mutex_unlock(&ebt_mutex);
+        EBT_ENTRY_ITERATE(table->private->entries, table->private->entries_size,
+                          ebt_cleanup_entry, NULL);
+        if (table->private->nentries)
+                module_put(table->me);
         vfree(table->private->entries);
         if (table->private->chainstack) {
                 for_each_possible_cpu(i)