bpo-43406: Fix possible race condition where ``PyErr_CheckSignals`` tries to execute a non-Python signal handler by pitrou · Pull Request #24756

bpo-43406: Fix possible race condition where ``PyErr_CheckSignals`` tries to execute a non-Python signal handler by pitrou · Pull Request #24756 · python/cpython

…ries to execute a non-Python signal handler.

…06.Na_VpA.rst

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request

Mar 5, 2021

…ries to execute a non-Python signal handler (pythonGH-24756)

We can receive signals (at the C level, in `trip_signal()` in signalmodule.c) while `signal.signal` is being called to modify the corresponding handler.  Later when `PyErr_CheckSignals()` is called to handle the given signal, the handler may be a non-callable object and would raise a cryptic asynchronous exception.
(cherry picked from commit 68245b7)

Co-authored-by: Antoine Pitrou <antoine@python.org>

pitrou added a commit to pitrou/cpython that referenced this pull request

Mar 5, 2021

…ls`` tries to execute a non-Python signal handler (pythonGH-24756)

We can receive signals (at the C level, in `trip_signal()` in signalmodule.c) while `signal.signal` is being called to modify the corresponding handler.  Later when `PyErr_CheckSignals()` is called to handle the given signal, the handler may be a non-callable object and would raise a cryptic asynchronous exception..
(cherry picked from commit 68245b7)

Co-authored-by: Antoine Pitrou <antoine@python.org>

pitrou deleted the bpo-43406-signal-race-condition branch

March 5, 2021 09:45

miss-islington added a commit that referenced this pull request

Mar 6, 2021

…ls`` tries to execute a non-Python signal handler (GH-24756) (GH-24761)

We can receive signals (at the C level, in `trip_signal()` in signalmodule.c) while `signal.signal` is being called to modify the corresponding handler.  Later when `PyErr_CheckSignals()` is called to handle the given signal, the handler may be a non-callable object and would raise a cryptic asynchronous exception.
(cherry picked from commit 68245b7)


Co-authored-by: Antoine Pitrou <antoine@python.org>

miss-islington pushed a commit that referenced this pull request

Mar 6, 2021

…ls`` tries to execute a non-Python signal handler (GH-24756) (GH-24762)

We can receive signals (at the C level, in `trip_signal()` in signalmodule.c) while `signal.signal` is being called to modify the corresponding handler.  Later when `PyErr_CheckSignals()` is called to handle the given signal, the handler may be a non-callable object and would raise a cryptic asynchronous exception..
(cherry picked from commit 68245b7)

Co-authored-by: Antoine Pitrou <antoine@python.org>