run_client.py: force permission denied (originated from sysctl(KERN_PROCARGS2) -> errno 0) #6461
Description
Build
Build leg reported
Microsoft.Bcl.Numerics.Tests.WorkItemExecution
Pull Request
https://github.com/dotnet/runtime.git/pull/124867
Known issue core information
Fill out the known issue JSON section by following the step by step documentation on how to create a known issue
{
"ErrorMessage" : "force permission denied (originated from sysctl(KERN_PROCARGS2) -> errno 0)",
"BuildRetry": false,
"ErrorPattern": "",
"ExcludeConsoleLog": false
}@dotnet/dnceng
Release Note Category
- Feature changes/additions
- Bug fixes
- Internal Infrastructure Improvements
Release Note Description
Additional information about the issue reported
2026-02-25T19:26:09.065Z INFO job(38) wait Work item's process exited normally.
2026-02-25T19:26:09.124Z ERROR executor(928) _execute_command <built-in function proc_cmdline> returned a result with an exception set
PermissionError: [Errno 13] force permission denied (originated from sysctl(KERN_PROCARGS2) -> errno 0)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/private/etc/helix/scripts/helix/executor.py", line 890, in _execute_command
finished_gracefully = job.wait()
File "/private/etc/helix/scripts/helix/job.py", line 50, in wait
self.kill_any_leaked_workitem_processes()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/private/etc/helix/scripts/helix/job.py", line 93, in kill_any_leaked_workitem_processes
instances = [p for p in psutil.process_iter(attrs=['pid', 'name', 'cmdline']) if current_pid != p.info['pid']]
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/private/etc/helix/scripts/psutil/__init__.py", line 1558, in process_iter
proc.info = proc.as_dict(attrs=attrs, ad_value=ad_value)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/private/etc/helix/scripts/psutil/__init__.py", line 579, in as_dict
ret = meth()
File "/private/etc/helix/scripts/psutil/__init__.py", line 748, in cmdline
return self._proc.cmdline()
~~~~~~~~~~~~~~~~~~^^
File "/private/etc/helix/scripts/psutil/_psosx.py", line 347, in wrapper
return fun(self, *args, **kwargs)
File "/private/etc/helix/scripts/psutil/_psosx.py", line 405, in cmdline
return cext.proc_cmdline(self.pid)
~~~~~~~~~~~~~~~~~^^^^^^^^^^
SystemError: <built-in function proc_cmdline> returned a result with an exception set
2026-02-25T19:26:09.133Z INFO interval(67) set_abort_after_timer Set the timer's abort_after to 180 seconds from now: abort_after = 2026-02-25 14:29:09.133048
2026-02-25T19:26:09.133Z INFO executor(1017) _upload_files Allowing maximum 0.0 seconds to upload 0 bytes of files.
2026-02-25T19:26:09.133Z INFO interval(67) set_abort_after_timer Set the timer's abort_after to 60.0 seconds from now: abort_after = 2026-02-25 14:27:09.133392
2026-02-25T19:26:09.133Z INFO logs(167) __exit__ Uploading self-uploading log file /tmp/helix/logs/9f3bd125-a0b3-4eb0-826c-f5c370c50e8b.log (Client: dci-mac-build-320)
2026-02-25T19:26:09.162Z ERROR logs(169) __exit__ Unhandled error
Traceback (most recent call last):
File "/private/etc/helix/scripts/helix/executor.py", line 149, in run
(log_path, exit_code, timed_out) = self._execute_command(
~~~~~~~~~~~~~~~~~~~~~^
command=command,
^^^^^^^^^^^^^^^^
...<2 lines>...
local_iteration=local_reruns,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/private/etc/helix/scripts/helix/executor.py", line 935, in _execute_command
log.info("Finished _execute_command, exit code: %d" % exit_code)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
TypeError: %d format: a real number is required, not NoneType
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1309813
Error message validated: [force permission denied (originated from sysctl(KERN_PROCARGS2) -> errno 0)]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 2/26/2026 4:58:10 PM UTC
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 0 | 0 |