[dos] macOS < 10.14.3 / iOS < 12.1.3 XNU – 'vm_map_copy' Optimization which Requires Atomicity isn't Atomic

[dos] macOS < 10.14.3 / iOS < 12.1.3 XNU - 'vm_map_copy' Optimization which Requires Atomicity isn't Atomic macOS < 10.14.3 / iOS < 12.1.3 XNU - 'vm_map_copy' Optimization which Requires Atomicity isn't Atomic