027cd01c kernel: read-only shared mappings stay read-only, madvise WIPEONFORK/DONTFORK are real, CLONE_NEW* refused, prctl answers honestly, AF_UNIX POLLHUP, SE
28d7d35e epoll walks its interest list under a per-instance mutex, not its spinlock, and /dev/dsp readiness never sleeps — the MacBook hang while playing medi
