[issue40089] Add _at_fork_reinit() method to locks

Change by STINNER Victor : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___ __

[issue40089] Add _at_fork_reinit() method to locks

STINNER Victor added the comment: New changeset 6318e45bda6c37d5497f33a6039cdb65aa494c93 by Miss Islington (bot) in branch '3.8': bpo-40089: Fix threading._after_fork() (GH-19191) (GH-19194) https://github.com/python/cpython/commit/6318e45bda6c37d5497f33a6039cdb65aa494c93 -- __

[issue40089] Add _at_fork_reinit() method to locks

STINNER Victor added the comment: New changeset a514ccb3ea6f01fef850d9465b82a1670d5ace44 by Miss Islington (bot) in branch '3.7': bpo-40089: Fix threading._after_fork() (GH-19191) (GH-19193) https://github.com/python/cpython/commit/a514ccb3ea6f01fef850d9465b82a1670d5ace44 -- __

[issue40089] Add _at_fork_reinit() method to locks

STINNER Victor added the comment: New changeset 87255be6964979b5abdc4b9dcf81cdcfdad6e753 by Victor Stinner in branch 'master': bpo-40089: Add _at_fork_reinit() method to locks (GH-19195) https://github.com/python/cpython/commit/87255be6964979b5abdc4b9dcf81cdcfdad6e753 -- __

[issue40089] Add _at_fork_reinit() method to locks

STINNER Victor added the comment: See also bpo-40092: "Crash in _PyThreadState_DeleteExcept() at fork in the process child". -- ___ Python tracker ___ ___

[issue40089] Add _at_fork_reinit() method to locks

STINNER Victor added the comment: See also bpo-40091 "Crash in logging._after_at_fork_child_reinit_locks()" that I just created. -- ___ Python tracker ___ ___

[issue40089] Add _at_fork_reinit() method to locks

Change by STINNER Victor : -- pull_requests: +18557 pull_request: https://github.com/python/cpython/pull/19196 ___ Python tracker ___ __

[issue40089] Add _at_fork_reinit() method to locks

Change by miss-islington : -- pull_requests: +18554 pull_request: https://github.com/python/cpython/pull/19194 ___ Python tracker ___ __

[issue40089] Add _at_fork_reinit() method to locks

Change by STINNER Victor : -- pull_requests: +18555 pull_request: https://github.com/python/cpython/pull/19195 ___ Python tracker ___ __

[issue40089] Add _at_fork_reinit() method to locks

STINNER Victor added the comment: New changeset d8ff44ce4cd6f3ec0fab5fccda6bf14afcb25c30 by Victor Stinner in branch 'master': bpo-40089: Fix threading._after_fork() (GH-19191) https://github.com/python/cpython/commit/d8ff44ce4cd6f3ec0fab5fccda6bf14afcb25c30 --

[issue40089] Add _at_fork_reinit() method to locks

Change by miss-islington : -- nosy: +miss-islington nosy_count: 2.0 -> 3.0 pull_requests: +18553 pull_request: https://github.com/python/cpython/pull/19193 ___ Python tracker _

[issue40089] Add _at_fork_reinit() method to locks

STINNER Victor added the comment: _at_fork() has a bug: it creates a _DummyThread instead of a _MainThread. Example: --- import os, _thread, threading, time def fork_in_thread(): pid = os.fork() if pid: # parent os._exit(0) # child process print(f"child proces

[issue40089] Add _at_fork_reinit() method to locks

Change by STINNER Victor : -- keywords: +patch pull_requests: +18551 stage: -> patch review pull_request: https://github.com/python/cpython/pull/19191 ___ Python tracker ___ _

[issue40089] Add _at_fork_reinit() method to locks

Change by Batuhan Taskaya : -- nosy: +Batuhan Taskaya ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: https:/

[issue40089] Add _at_fork_reinit() method to locks

New submission from STINNER Victor : Using a lock after fork() is unsafe and can crash. Example of a crash in logging after a fork on AIX: https://bugs.python.org/issue40068#msg365028 This problem is explained in length in bpo-6721: "Locks in the standard library should be sanitized on fork".