[issue43832] asyncio + multiprocessing = core dump in sem_trywait

[Andrei Pozolotin]

New submission from Andrei Pozolotin <andrei.pozolotin at gmail.com>:

every attempt to touch multiprocessing.Event.is_set()
from asyncio.run() results in reproducible core dump in sem_trywait

system: Linux 5.11.8

Linux work3 5.11.8-arch1-1 #1 SMP PREEMPT Sun, 21 Mar 2021 01:55:51 +0000 x86_64 GNU/Linux

Python: 3.9.2

https://archlinux.org/packages/extra/x86_64/python/

----------
components: asyncio
files: dump_core.py
messages: 390973
nosy: Andrei Pozolotin, asvetlov, yselivanov
priority: normal
severity: normal
status: open
title: asyncio + multiprocessing = core dump in sem_trywait
type: crash
versions: Python 3.9
Added file: https://bugs.python.org/file49956/dump_core.py

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43832>
_______________________________________