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Bug 2022530

Summary: traceback if there is non-utf8 character in the /proc/PID/cmdline
Product: Red Hat Enterprise Linux 9 Reporter: John Kacur <jkacur>
Component: python-linux-procfsAssignee: John Kacur <jkacur>
Status: CLOSED ERRATA QA Contact: Qiao Zhao <qzhao>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 9.0CC: bhu, jskarvad, mhou, mstowell, qzhao, rt-maint
Target Milestone: rcKeywords: Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: python-linux-procfs-0.6.3-3.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 2016204 Environment:
Last Closed: 2022-05-17 15:57:56 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2016204, 2031717    
Bug Blocks:    
Deadline: 2021-12-27   

Comment 8 mhou 2021-12-13 06:58:06 UTC 
I occurred another issue when updating python3-linux-procfs to 0.6.3-4.el9. Should I open a new bug to traced this issue?

# rpm -qa | grep python3-linux
python3-linux-procfs-0.6.3-4.el9.noarch

# cat /etc/tuned/realtime-virtual-host-variables.conf 
isolated_cores=1-23,25-47
isolate_managed_irq=Y
# tuned-adm profile realtime-virtual-host

# cat /var/log/tuned/tuned.log
2021-12-12 22:29:16,369 INFO     tuned.plugins.plugin_cpu: setting new cpu latency 2
2021-12-12 22:29:16,370 ERROR    tuned.plugins.plugin_sysctl: Failed to read sysctl parameter 'net.core.busy_read', the parameter does not exist
2021-12-12 22:29:16,370 ERROR    tuned.plugins.plugin_sysctl: sysctl option net.core.busy_read will not be set, failed to read the original value.
2021-12-12 22:29:16,370 ERROR    tuned.plugins.plugin_sysctl: Failed to read sysctl parameter 'net.core.busy_poll', the parameter does not exist
2021-12-12 22:29:16,370 ERROR    tuned.plugins.plugin_sysctl: sysctl option net.core.busy_poll will not be set, failed to read the original value.
2021-12-12 22:29:16,375 INFO     tuned.plugins.plugin_sysctl: reapplying system sysctl
2021-12-12 22:29:16,376 WARNING  tuned.plugins.plugin_vm: Option 'transparent_hugepages' is not supported on current hardware.
2021-12-12 22:29:16,377 INFO     tuned.plugins.plugin_bootloader: installing additional boot command line parameters to grub2
2021-12-12 22:29:16,490 WARNING  tuned.profiles.functions.function_check_net_queue_count: net-dev queue count is not correctly specified, setting it to HK CPUs 48

2021-12-12 22:29:16,509 ERROR    tuned.utils.commands: Executing ethtool error: netlink error: requested channel count exceeds maximum (offset 36)
netlink error: Invalid argument
2021-12-12 22:29:16,526 ERROR    tuned.utils.commands: Executing ethtool error: netlink error: requested channel count exceeds maximum (offset 36)
netlink error: Invalid argument
2021-12-12 22:29:16,534 ERROR    tuned.utils.commands: Executing ethtool error: netlink error: requested channel count exceeds maximum (offset 36)
netlink error: Invalid argument
2021-12-12 22:29:16,542 ERROR    tuned.utils.commands: Executing ethtool error: netlink error: requested channel count exceeds maximum (offset 36)
netlink error: Invalid argument
2021-12-12 22:29:16,621 INFO     tuned.plugins.plugin_script: calling script '/usr/lib/tuned/realtime/script.sh' with arguments '['start']'
2021-12-12 22:29:16,661 INFO     tuned.plugins.plugin_script: calling script '/usr/lib/tuned/realtime-virtual-host/script.sh' with arguments '['start']'
2021-12-12 22:29:17,117 INFO     tuned.daemon.daemon: static tuning from profile 'realtime-virtual-host' applied
2021-12-13 01:49:46,502 INFO     tuned.daemon.daemon: stopping tuning
2021-12-13 01:49:46,516 INFO     tuned.daemon.daemon: terminating TuneD, rolling back all changes
2021-12-13 01:49:46,645 ERROR    tuned.units.manager: BUG: Unhandled exception in stop_tuning: 'unicodeescape' codec can't decode bytes in position 22-23: truncated \uXXXX escape
2021-12-13 01:49:46,645 ERROR    tuned.units.manager: Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/tuned/units/manager.py", line 119, in _try_call
    return f(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/tuned/plugins/instance/instance.py", line 87, in unapply_tuning
    self._plugin.instance_unapply_tuning(self, full_rollback)
  File "/usr/lib/python3.9/site-packages/tuned/plugins/base.py", line 312, in instance_unapply_tuning
    self._instance_unapply_static(instance, full_rollback)
  File "/usr/lib/python3.9/site-packages/tuned/plugins/plugin_scheduler.py", line 722, in _instance_unapply_static
    self._restore_ps_affinity()
  File "/usr/lib/python3.9/site-packages/tuned/plugins/plugin_scheduler.py", line 678, in _restore_ps_affinity
    ps = self.get_processes()
  File "/usr/lib/python3.9/site-packages/tuned/plugins/plugin_scheduler.py", line 293, in get_processes
    cmd = self._get_cmdline(proc)
  File "/usr/lib/python3.9/site-packages/tuned/plugins/plugin_scheduler.py", line 281, in _get_cmdline
    cmdline = procfs.process_cmdline(process)
  File "/usr/lib/python3.9/site-packages/procfs/procfs.py", line 43, in process_cmdline
    if pid_info["cmdline"]:
  File "/usr/lib/python3.9/site-packages/procfs/procfs.py", line 356, in __getitem__
    self.load_cmdline()
  File "/usr/lib/python3.9/site-packages/procfs/procfs.py", line 374, in load_cmdline
    cmdline = f.readline().decode(encoding='unicode_escape')
UnicodeDecodeError: 'unicodeescape' codec can't decode bytes in position 22-23: truncated \uXXXX escape

2021-12-13 01:49:46,647 INFO     tuned.plugins.plugin_script: calling script '/usr/lib/tuned/realtime-virtual-host/script.sh' with arguments '['stop', 'full_rollback']'
2021-12-13 01:49:46,665 INFO     tuned.plugins.plugin_script: calling script '/usr/lib/tuned/realtime/script.sh' with arguments '['stop', 'full_rollback']'
Comment 14 errata-xmlrpc 2022-05-17 15:57:56 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (new packages: python-linux-procfs), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:3980