New submission from Nick Sweeting: I mistakenly thought this bug was a pyOpenSSL bug, so I reported it there (https://github.com/pyca/pyopenssl/issues/588), but it looks like this is actually a bug in CPython.
See the link for a nicer formatted bug report with more details. Code to reproduce: https://gist.github.com/pirate/6649314e02384274b29e04364c9d0c16 Crash dump: https://gist.github.com/pirate/e1485110093d2d9fc49596e6ff481777 Description: The bug is a segmentation fault when closing several secure websockets from inside concurrent python3.6 threads: ```pythohn 'python3.6 libssl_bug.py' terminated by signal SIGSEGV (Address boundary error) ``` It does not occur when doing it in a single thread, only when closing multiple threads at once. ```python threads = [] for _ in range(NUM_THREADS): t = SocketThread('wss://echo.websocket.org/', ssl_opt={'cert_reqs': 0}) t.start() threads.append(t) sleep(4) for t in threads: t.keep_running = False t.ws.close() # libssl segfaults on python3.6 when closing a wss:// connection with cert_reqs=0 t.join() ``` This is my first python bug report, so apologies if I didn't get the formatting right or if I'm missing some info. ---------- assignee: christian.heimes components: SSL, macOS files: libssl_bug.py messages: 285971 nosy: Nick Sweeting, christian.heimes, ned.deily, ronaldoussoren priority: normal severity: normal status: open title: SSL destructor segfaults in python3.6 threads when an unverified-cert connection is closed type: crash versions: Python 3.6 Added file: http://bugs.python.org/file46375/libssl_bug.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29340> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
