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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2021-03-06 15:07:46 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-03-06 15:07:46 (GMT) |
| commit | 1385f8355a036fd65aaf9c7e7ab48467ca922bcf (patch) | |
| tree | 83d052efc9bdf3a2a8189ed556ab2d9b1c0594ff /Misc | |
| parent | 65f3a0d20c8198443c5c6cb44410114fe8c4bf4e (diff) | |
| download | cpython-1385f8355a036fd65aaf9c7e7ab48467ca922bcf.zip cpython-1385f8355a036fd65aaf9c7e7ab48467ca922bcf.tar.gz cpython-1385f8355a036fd65aaf9c7e7ab48467ca922bcf.tar.bz2 | |
[3.9] bpo-43406: Fix possible race condition where ``PyErr_CheckSignals`` 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 68245b7a1030287294c65c298975ab9026543fd2)
Co-authored-by: Antoine Pitrou <antoine@python.org>
Diffstat (limited to 'Misc')
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2021-03-04-22-53-10.bpo-43406.Na_VpA.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-03-04-22-53-10.bpo-43406.Na_VpA.rst b/Misc/NEWS.d/next/Core and Builtins/2021-03-04-22-53-10.bpo-43406.Na_VpA.rst new file mode 100644 index 0000000..c18a55e --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2021-03-04-22-53-10.bpo-43406.Na_VpA.rst @@ -0,0 +1,2 @@ +Fix a possible race condition where ``PyErr_CheckSignals`` tries to execute a +non-Python signal handler. |