gh-133467: fix data race in type_set_name#137302
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kumaraditya303 changed the title 4 tasks
kumaraditya303 added topic-free-threading needs backport to 3.14 
kumaraditya303 merged commit e99bc7f into python:main 44 checks passed
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Thanks @kumaraditya303 for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14. |
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Aug 1, 2025
Fix data race in `type_set_name` by assigning name under stop the world pause making it thread safe in free-threading. (cherry picked from commit e99bc7f) Co-authored-by: Kumar Aditya <[email protected]>
GH-137303 is a backport of this pull request to the 3.14 branch. |
Agent-Hellboy pushed a commit to Agent-Hellboy/cpython that referenced this pull request Aug 19, 2025
Fix data race in `type_set_name` by assigning name under stop the world pause making it thread safe in free-threading.
kumaraditya303 added a commit that referenced this pull request Oct 7, 2025
gh-133467: fix data race in `type_set_name` (GH-137302) Fix data race in `type_set_name` by assigning name under stop the world pause making it thread safe in free-threading. (cherry picked from commit e99bc7f) Co-authored-by: Kumar Aditya <[email protected]>
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This fixes two data races:
type_set_name: Assign the new name under stop the world pause to avoid data races with threads concurrently reading and writing name.slot_tp_descr_get: Avoid assignment inslot_tp_descr_getas it is not thread safe in free-threading and is a minor optimization.