The pfq bot failed in multiple VMTests for the same error.
https://uberchromegw.corp.google.com/i/chromeos/builders/amd64-generic-chromium-pfq/builds/11804

03/23 03:35:04.244 ERROR|               log:0027| pre-test siteration sysinfo error:
03/23 03:35:04.247 ERROR|         traceback:0013| Traceback (most recent call last):
03/23 03:35:04.250 ERROR|         traceback:0013|   File "/usr/local/autotest/common_lib/log.py", line 25, in decorated_func
03/23 03:35:04.253 ERROR|         traceback:0013|     fn(*args, **dargs)
03/23 03:35:04.256 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/base_sysinfo.py", line 394, in log_before_each_iteration
03/23 03:35:04.260 ERROR|         traceback:0013|     board = utils.get_board_with_frequency_and_memory()
03/23 03:35:04.262 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/utils.py", line 2025, in get_board_with_frequency_and_memory
03/23 03:35:04.266 ERROR|         traceback:0013|     frequency = int(round(get_cpu_max_frequency() * 1e-8)) * 0.1
03/23 03:35:04.269 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/utils.py", line 1852, in get_cpu_max_frequency
03/23 03:35:04.273 ERROR|         traceback:0013|     paths = _get_cpufreq_paths('cpuinfo_max_freq')
03/23 03:35:04.276 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/utils.py", line 2109, in _get_cpufreq_paths
03/23 03:35:04.279 ERROR|         traceback:0013|     paths = utils.run(cmd, verbose=False).stdout.splitlines()
03/23 03:35:04.282 ERROR|         traceback:0013|   File "/usr/local/autotest/common_lib/utils.py", line 748, in run
03/23 03:35:04.286 ERROR|         traceback:0013|     "Command returned non-zero exit status")
03/23 03:35:04.290 ERROR|         traceback:0013| CmdError: Command <ls /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq> failed, rc=2, Command returned non-zero exit status
03/23 03:35:04.293 ERROR|         traceback:0013| * Command: 
03/23 03:35:04.296 ERROR|         traceback:0013|     ls /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq
03/23 03:35:04.299 ERROR|         traceback:0013| Exit status: 2
03/23 03:35:04.302 ERROR|         traceback:0013| Duration: 0.00178503990173
03/23 03:35:04.305 ERROR|         traceback:0013| 
03/23 03:35:04.308 ERROR|         traceback:0013| stderr:
03/23 03:35:04.311 ERROR|         traceback:0013| ls: cannot access '/sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq': No such file or directory
03/23 03:35:21.307 ERROR|           browser:0057| Failed with DevtoolsTargetCrashException while starting the browser backend.