Has anyone estimated the probability of success? What is the average number of attempts to get the scheduling conditions to happen? Assume the user can get acc

Has anyone estimated the probability of success? What is the average number of attempts to get the scheduling conditions to happen? Assume the user can get access to a CPU core that is otherwise idle. sched_setaffinity(2) will succeed when run by the process to set its own affinity to a specific core, so the attacker can locate the processes on a chosen core. (The attacker could spend a few milliseconds first to find an idle core.)