worker_unref      621 src/udev/udevd.c                         worker_unref(worker);
worker_unref      902 src/udev/udevd.c                                                 worker_unref(worker);
worker_unref      905 src/udev/udevd.c                                 worker_unref(worker);
worker_unref     1425 src/udev/udevd.c                                                 worker_unref(worker);