quoted

 #endif /* _LINUX_LIVEUPDATE_ABI_LUO_H */

diff --git a/kernel/liveupdate/luo_file.c b/kernel/liveupdate/luo_file.c
index df337c9c4f21..9a531096bdb5 100644
--- a/kernel/liveupdate/luo_file.c
+++ b/kernel/liveupdate/luo_file.c

@@ -834,6 +834,8 @@ int liveupdate_register_file_handler(struct liveupdate_file_handler *fh)
      INIT_LIST_HEAD(&fh->flb_list);
      list_add_tail(&fh->list, &luo_file_handler_list);

+     liveupdate_test_register(fh);
+

Why this cannot be called from the test?

Because test does not have access to all file_handlers that are being
registered with LUO.

Pasha