Ceph

The method wait() of AsyncMessenger has an ill-formed condition wait.

  {
    std::unique_lock locker{lock};
    if (!started) {
      return;
    }
    if (!stopped)
      stop_cond.wait(locker);
  }

This code works unless the kernel decides to wake up sleeping threads spuriously, which may happen according to the POSIX documentation. Specifically, this is the case when attaching a debugger to the process on the macOs.