bpf_check_attach_target
int bpf_check_attach_target(struct bpf_verifier_log *log,
err = bpf_check_attach_target(NULL, prog, tgt_prog, btf_id,
err = bpf_check_attach_target(NULL, prog, NULL,
ret = bpf_check_attach_target(&env->log, prog, tgt_prog, btf_id, &tgt_info);