static void __exit fini_umd(void)
{
	bpf_preload_ops = NULL;
	/* kill UMD in case it's still there due to earlier error */
	kill_pid(umd_ops.info.tgid, SIGKILL, 1);
	umd_ops.info.tgid = NULL;
	umd_unload_blob(&umd_ops.info);
}
static void __exit fini_umd(void)
{
	bpf_preload_ops = NULL;
	 
	kill_pid(umd_ops.info.tgid, SIGKILL, 1);
	umd_ops.info.tgid = NULL;
	umd_unload_blob(&umd_ops.info);
}