trybots with chromeos-4.14 fail with the following error.

01/19 19:55:36.231 WARNI|               arc:0451| Iteration 1 failed, taking a screenshot.
01/19 19:55:36.573 WARNI|              test:0637| The test failed with the following exception
Traceback (most recent call last):
  File "/usr/local/autotest/common_lib/test.py", line 631, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/common_lib/test.py", line 831, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/common_lib/test.py", line 495, in execute
    dargs)
  File "/usr/local/autotest/common_lib/test.py", line 362, in _call_run_once_with_retry
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/common_lib/test.py", line 400, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/tests/cheets_SELinuxTest/cheets_SELinuxTest.py", line 445, in run_once
    self._check_sys_devices_system_cpu_labels()
  File "/usr/local/autotest/tests/cheets_SELinuxTest/cheets_SELinuxTest.py", line 326, in _check_sys_devices_system_cpu_labels
    check_top_dir=False)
  File "/usr/local/autotest/tests/cheets_SELinuxTest/cheets_SELinuxTest.py", line 43, in _check_file_labels_recursively
    _assert_eq(expected, label, 'label for %s' % path)
  File "/usr/local/autotest/tests/cheets_SELinuxTest/cheets_SELinuxTest.py", line 29, in _assert_eq
    .format(msg, expected, actual))
TestFail: Unexpected label for /sys/devices/system/cpu/cpu1/power/pm_qos_resume_latency_us: Expected: u:object_r:sysfs:s0, Actual: u:object_r:sysfs_devices_system_cpu:s0

This is observed pretty much on all platforms running ARC+; actively seen with both release and paladin trybot runs on banon, celes, wizpig, cave, caroline, chell, lars, eve, and reef.