[3.14] gh-140431: Fix GC crash due to partially initialized coroutines (gh-140470)#140504
Merged
colesbury merged 1 commit intoOct 23, 2025
python:3.14python/cpython:3.14from
miss-islington:backport-574405c-3.14miss-islington/cpython:backport-574405c-3.14Copy head branch name to clipboard
Merged
[3.14] gh-140431: Fix GC crash due to partially initialized coroutines (gh-140470)#140504colesbury merged 1 commit intopython:3.14python/cpython:3.14from miss-islington:backport-574405c-3.14miss-islington/cpython:backport-574405c-3.14Copy head branch name to clipboard
colesbury merged 1 commit into
python:3.14python/cpython:3.14from
miss-islington:backport-574405c-3.14miss-islington/cpython:backport-574405c-3.14Copy head branch name to clipboard
Conversation
…pythongh-140470) The `make_gen()` function creates and tracks generator/coro objects, but doesn't fully initialize all the fields. At a minimum, we need to initialize all the fields that may be accessed by gen_traverse because the call to `compute_cr_origin()` can trigger a GC. (cherry picked from commit 574405c) Co-authored-by: Sam Gross <colesbury@gmail.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The
make_gen()function creates and tracks generator/coro objects, butdoesn't fully initialize all the fields. At a minimum, we need to
initialize all the fields that may be accessed by gen_traverse because
the call to
compute_cr_origin()can trigger a GC.(cherry picked from commit 574405c)
Co-authored-by: Sam Gross colesbury@gmail.com