root/tools/testing/selftests/bpf/verifier/scale.c 
{
        "scale: scale test 1",
        .insns = { },
        .data = { },
        .fill_helper = bpf_fill_scale,
        .prog_type = BPF_PROG_TYPE_SCHED_CLS,
        .result = ACCEPT,
        .retval = 1,
},
{
        "scale: scale test 2",
        .insns = { },
        .data = { },
        .fill_helper = bpf_fill_scale,
        .prog_type = BPF_PROG_TYPE_SCHED_CLS,
        .result = ACCEPT,
        .retval = 2,
},