gh-155363: Fix QSBR slot leak on thread state creation failure - #155365
Open
nascheme wants to merge 1 commit into
Open
gh-155363: Fix QSBR slot leak on thread state creation failure#155365nascheme wants to merge 1 commit into
nascheme wants to merge 1 commit into
Conversation
In the free-threaded build, new_threadstate() reserves a QSBR thread-state slot before it can still fail for other reasons, but the failure paths only called free_threadstate(), which does not know about the reservation.
nascheme
marked this pull request as ready for review
August 7, 2026 21:29
nascheme
requested review from
FFY00,
ZeroIntensity and
ericsnowcurrently
as code owners
August 7, 2026 21:29
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
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
In the free-threaded build,
new_threadstate()reserves a QSBR thread-state slot before it can still fail for other reasons, but the failure paths only calledfree_threadstate(), which does not know about the reservation.Add
_Py_qsbr_unreserve()which returns the unregistered entry to the freelist.