diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 9622e3d883b5..43c321d38688 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -379,7 +379,10 @@ static int decode_choose_args(void **p, void *end, struct crush_map *c)
 				goto e_inval;
 		}
 
-		insert_choose_arg_map(&c->choose_args, arg_map);
+		if (!__insert_choose_arg_map(&c->choose_args, arg_map)) {
+			ret = -EEXIST;
+			goto fail;
+		}
 	}
 
 	return 0;