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-rw-r--r--src/vnet/ip-neighbor/ip_neighbor.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/vnet/ip-neighbor/ip_neighbor.c b/src/vnet/ip-neighbor/ip_neighbor.c
index d8c386dd527..6af76d262a4 100644
--- a/src/vnet/ip-neighbor/ip_neighbor.c
+++ b/src/vnet/ip-neighbor/ip_neighbor.c
@@ -615,6 +615,13 @@ ip_neighbor_update (vnet_main_t * vnm, adj_index_t ai)
* wouldn't be bad either, but that's more code than i'm prepared to
* write at this time for relatively little reward.
*/
+ /*
+ * adj_nbr_update_rewrite may actually call fib_walk_sync.
+ * fib_walk_sync may allocate a new adjacency and potentially cause
+ * a realloc for adj_pool. When that happens, adj pointer is no
+ * longer valid here.x We refresh adj pointer accordingly.
+ */
+ adj = adj_get (ai);
ip_neighbor_probe (adj);
}
break;