fib: make sure adj is valid during walk

[vpp.git] / src / vnet / adj / adj_nbr.c

diff --git a/src/vnet/adj/adj_nbr.c b/src/vnet/adj/adj_nbr.c
index 811d0b8..3344d6e 100644 (file)
--- a/src/vnet/adj/adj_nbr.c
+++ b/src/vnet/adj/adj_nbr.c
@@ -750,12 +750,15 @@ adj_nbr_interface_state_change_one (adj_index_t ai,
     };
     ip_adjacency_t *adj;
 
+    adj_lock (ai);
+
     adj = adj_get(ai);
 
     adj->ia_flags |= ADJ_FLAG_SYNC_WALK_ACTIVE;
     fib_walk_sync(FIB_NODE_TYPE_ADJ, ai, &bw_ctx);
     adj->ia_flags &= ~ADJ_FLAG_SYNC_WALK_ACTIVE;
 
+    adj_unlock (ai);
     return (ADJ_WALK_RC_CONTINUE);
 }