__bpf_obj_drop_impl
void __bpf_obj_drop_impl(void *p, const struct btf_record *rec, bool percpu);
__bpf_obj_drop_impl(obj, field->graph_root.value_rec, false);
__bpf_obj_drop_impl(obj, field->graph_root.value_rec, false);
__bpf_obj_drop_impl(p, meta ? meta->record : NULL, false);
__bpf_obj_drop_impl((void *)n - off, rec, false);
__bpf_obj_drop_impl((void *)n - off, rec, false);
__bpf_obj_drop_impl(xchgd_field, pointee_struct_meta ?