init_slots
status = init_slots(first);
rc = init_slots(ctrl);
if (!map->init_slots[i])
targ_map = map->init_slots[i];
zfree(&map->init_slots);
if (!map->init_slots[i])
targ_prog = map->init_slots[i];
zfree(&map->init_slots);
void **init_slots;
tmp = libbpf_reallocarray(map->init_slots, new_sz, host_ptr_sz);
map->init_slots = tmp;
memset(map->init_slots + map->init_slots_sz, 0,
map->init_slots[moff] = is_map_in_map ? (void *)targ_map : (void *)targ_prog;
zfree(&map->init_slots);