[NETFILTER] Free layer-3 specific protocol tables at cleanup

Although the comment around the allocation code tells us that
the layer-3 specific protocol tables will be freed when cleaning up,
they aren't. And this makes nfsim complain loudly...

Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 9a67c796b38..ea094b231d6 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1395,6 +1395,13 @@ void nf_conntrack_cleanup(void)
         kmem_cache_destroy(nf_conntrack_expect_cachep);
         free_conntrack_hash(nf_conntrack_hash, nf_conntrack_vmalloc,
                             nf_conntrack_htable_size);
+
+        /* free l3proto protocol tables */
+        for (i = 0; i < PF_MAX; i++)
+                if (nf_ct_protos[i]) {
+                        kfree(nf_ct_protos[i]);
+                        nf_ct_protos[i] = NULL;
+                }
 }
 
 static struct list_head *alloc_hashtable(int size, int *vmalloced)