1 files changed, 16 insertions, 5 deletions

diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index cfb249cc0a58..13307c04d5a1 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1989,6 +1989,10 @@ static struct node *fib_trie_get_next(struct fib_trie_iter *iter)
         unsigned cindex = iter->index;
         struct tnode *p;
 
+        /* A single entry routing table */
+        if (!tn)
+                return NULL;
+
         pr_debug("get_next iter={node=%p index=%d depth=%d}\n",
                  iter->tnode, iter->index, iter->depth);
 rescan:
@@ -2037,11 +2041,18 @@ static struct node *fib_trie_get_first(struct fib_trie_iter *iter,
         if(!iter)
                 return NULL;
 
-        if (n && IS_TNODE(n)) {
-                iter->tnode = (struct tnode *) n;
-                iter->trie = t;
-                iter->index = 0;
-                iter->depth = 1;
+        if (n) {
+                if (IS_TNODE(n)) {
+                        iter->tnode = (struct tnode *) n;
+                        iter->trie = t;
+                        iter->index = 0;
+                        iter->depth = 1;
+                } else {
+                        iter->tnode = NULL;
+                        iter->trie  = t;
+                        iter->index = 0;
+                        iter->depth = 0;
+                }
                 return n;
         }
         return NULL;