test_multiprocessing_forkserver.py, test_multiprocessing_fork.py and test_multiprocessing_spawn.py gives tracebacks

Tái hiện các lỗi với test_multiprocessing_forkserver.py, test_multiprocessing_fork.py và test_multiprocessing_spawn.py trên môi trường Linux Python 3.11 được báo cáo. Đọc multiprocessing/resource_tracker.py quanh dòng 209 và so sánh các trường hợp KeyError được đề cập trong pull request 95396. Được xem là hoàn tất khi xác định được liệu các traceback này có được mong đợi hay không và, nếu không, khiến các test bị ảnh hưởng hoàn tất mà không có chúng.

Bug report

During build RPM for python3.11rc1 I've found tracebacks for tests from test suite test_multiprocessing_forkserver.py, test_multiprocessing_fork.py, and test_multiprocessing_spawn.py :

[root@xxx test]# python3.11 test_multiprocessing_forkserver.py
............s..................................................s...............................s.s.s.....s...s...........ss.....s......................................................................................................................................Traceback (most recent call last):
  File "/opt/rh/rh-python311/root/usr/lib64/python3.11/multiprocessing/resource_tracker.py", line 209, in main
.    cache[rtype].remove(name)
KeyError: '/psm_8714e59f'
..............................ssss...............................s.........ss.ss..sss.sss.s.ssss......ss....s.
----------------------------------------------------------------------
Ran 374 tests in 75.001s

OK (skipped=33)
[root@xxx test]# python3.11 test_multiprocessing_spawn.py
............s..............s...................................s...............................s.s.s.....s...s...........ss.....s...............................................................................................ss.....................................Traceback (most recent call last):
  File "/opt/rh/rh-python311/root/usr/lib64/python3.11/multiprocessing/resource_tracker.py", line 209, in main
.    cache[rtype].remove(name)
KeyError: '/psm_e93c9b17'
..............................ssss...............................s.........ss.ss..sss.sss.s.ssss......ss....s.
----------------------------------------------------------------------
Ran 374 tests in 118.379s

OK (skipped=36)

[root@xxx test]# python3.11 test_multiprocessing_fork.py
............s..............s...................................s...............................s.s.s.....s...s...........ss.....s........................................................................................s......ss.....................................Traceback (most recent call last):
  File "/opt/rh/rh-python311/root/usr/lib64/python3.11/multiprocessing/resource_tracker.py", line 209, in main
.    cache[rtype].remove(name)
KeyError: '/psm_1324c68a'
..............................ssss...............................s.........ss.ss..sss.sss.s.ssss......ss....s.
----------------------------------------------------------------------
Ran 374 tests in 67.935s

OK (skipped=37)

I suppose, that tracebacks are not ok during test. Or close the bug, if it normal.
Some KeyError are present in https://github.com/python/cpython/pull/95396.

Your environment

Python 3.11.0rc1 (main, Aug 13 2022, 18:23:13) [GCC 9.3.1 20200408 (Red Hat 9.3.1-2)] on linux
Centos7 x86_64, python 3.11rc1