I don't know what's wrong with my program

[Stuckinendlesschaos]

I make some codes with cilium/ebpf. I find my code fails each time, error is "can't create link : operation not permitted". I used SEC("sockops") to do some works,and use AttachCGroupSockOps. I think my code is right, but error always happens at link.AttachCGroup(link.CgroupOperations{...})

I can't fix it , So what is question, where is it.
code

I find that error happened at createRawLink func , and code can run at other machine , so my virtual file system has some questions. how to fix it .

[Stuckinendlesschaos]

when I use SEC("cgroupv2/egress")，everything is okay. but I used SEC("sockops"), error has happened. Of course the part of link.AttachCGroup already has changed on right ways