isisd: prevent from accessing a non initialised pointer

When using bfd on a single level, one may access a null pointer
list. Prevent from using it.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

diff --git a/isisd/isis_bfd.c b/isisd/isis_bfd.c
index 1f50fb9342e46fe13ce4ce342d28f8850d477c4a..5311a384e784f23736ca3dbd15f676e52470cbbe 100644 (file)
--- a/isisd/isis_bfd.c
+++ b/isisd/isis_bfd.c
@@ -168,6 +168,8 @@ void isis_bfd_circuit_cmd(struct isis_circuit *circuit)
                        struct listnode *node;
                        struct isis_adjacency *adj;
 
+                       if (!adjdb)
+                               continue;
                        for (ALL_LIST_ELEMENTS_RO(adjdb, node, adj))
                                bfd_adj_cmd(adj);
                }