[issue38263] [Windows] multiprocessing: DupHandle.detach() race condition on DuplicateHandle(DUPLICATE_CLOSE_SOURCE)

[Jesvi Jonathan]

Jesvi Jonathan <jesvi22j at gmail.com> added the comment:

File "c:/Users/jesvi/Documents/GitHub/Jesvi-Bot-Telegram/scripts/main.py", line 144, in thread_test
    p.start()
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\process.py", line 121, in start
    self._popen = self._Popen(self)
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 327, in _Popen
    return Popen(process_obj)
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\popen_spawn_win32.py", line 93, in __init__
    reduction.dump(process_obj, to_child)
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\reduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
TypeError: cannot pickle '_thread.lock' object
Traceback (most recent call last):
  File "<string>", line 1, in <module>
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 107, in spawn_main
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 107, in spawn_main
    new_handle = reduction.duplicate(pipe_handle,
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\reduction.py", line 79, in duplicate
    new_handle = reduction.duplicate(pipe_handle,
  File "C:\Users\jesvi\AppData\Local\Programs\Python\Python38\lib\multiprocessing\reduction.py", line 79, in duplicate
    return _winapi.DuplicateHandle(
OSError: [WinError 6] The handle is invalid
    return _winapi.DuplicateHandle(
OSError: [WinError 6] The handle is invalid

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nosy: +jesvi22j
type: behavior -> compile error
versions:  -Python 3.10, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38263>
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