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GH-97592: Fix crash in C remove_done_callback due to evil code - #97660
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gvanrossum
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September 29, 2022 23:10
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Sep 29, 2022
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@xiaxinmeng Feel free to add your review. |
JelleZijlstra
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CharlieZhao95
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Sep 30, 2022
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| class evil: | ||
| def __eq__(self, other): | ||
| fut.remove_done_callback(other) | ||
| fut.remove_done_callback(evil()) |
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Class names should normally use the CapWords convention.
Suggested change
| classevil: | |
| def__eq__(self, other): | |
| fut.remove_done_callback(other) | |
| fut.remove_done_callback(evil()) | |
| classEvil: | |
| def__eq__(self, other): | |
| fut.remove_done_callback(other) | |
| fut.remove_done_callback(Evil()) |
| def __eq__(self, other): | ||
| fut.remove_done_callback(other) | ||
| fut.remove_done_callback(evil()) |
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All callbacks added by fut.add_done_callback() will be cleared when calling fut.remove_done_callback(Evil()), but the return value will be the number of callbacks added last.
I'm not sure if we need to improve the return value of remove done callback further, the current changes are good enough to fix the crash. :)
Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
miss-islington
commented
Sep 30, 2022
Contributor
Thanks @gvanrossum for the PR 🌮🎉.. I'm working now to backport this PR to: 3.10, 3.11. |
bedevere-bot
commented
Sep 30, 2022
GH-97692 is a backport of this pull request to the 3.11 branch. |
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Sep 30, 2022
…ythonGH-97660) Evil code could cause fut_callbacks to be cleared when PyObject_RichCompareBool is called. (cherry picked from commit 63780f4) Co-authored-by: Guido van Rossum <guido@python.org>
bedevere-bot
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Sep 30, 2022
GH-97693 is a backport of this pull request to the 3.10 branch. |
miss-islington pushed a commit
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Sep 30, 2022
…ythonGH-97660) Evil code could cause fut_callbacks to be cleared when PyObject_RichCompareBool is called. (cherry picked from commit 63780f4) Co-authored-by: Guido van Rossum <guido@python.org>
miss-islington added a commit
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Sep 30, 2022
) Evil code could cause fut_callbacks to be cleared when PyObject_RichCompareBool is called. (cherry picked from commit 63780f4) Co-authored-by: Guido van Rossum <guido@python.org>
miss-islington added a commit
that referenced
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Sep 30, 2022
) Evil code could cause fut_callbacks to be cleared when PyObject_RichCompareBool is called. (cherry picked from commit 63780f4) Co-authored-by: Guido van Rossum <guido@python.org>
serhiy-storchaka pushed a commit
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Oct 2, 2022
…ython#97660) Evil code could cause fut_callbacks to be cleared when PyObject_RichCompareBool is called.
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