The 'replica_sets_initsync_jscore_passthrough' suite has a secondary node syncing during the other tests, so tests that interact with the profiler cannot be run during this suite. Many such tests are already blacklisted, but this list does not include profile_sampling.js. profile_sampling.js failed in one of my patch builds because it saw an extra profile entry.

We should think about how to prevent new tests that interact with the profile from failing similarly.