[3.14] gh-136870: fix data races in instrumentation of bytecode (GH-136994)#137082
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hugovk merged 2 commits intopython:3.14python/cpython:3.14from Jul 28, 2025
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[3.14] gh-136870: fix data races in instrumentation of bytecode (GH-136994)#137082hugovk merged 2 commits intopython:3.14python/cpython:3.14from miss-islington:backport-9a6b60a-3.14miss-islington/cpython:backport-9a6b60a-3.14Copy head branch name to clipboard
hugovk merged 2 commits intopython:3.14python/cpython:3.14from
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…nGH-136994) De-instrumenting code objects modifies the thread local bytecode for all threads as such, holding the critical section on the code object is not sufficient and leads to data races. Now, the de-instrumentation is now performed under a stop the world pause as such no thread races with executing the thread local bytecode while it is being de-instrumented. (cherry picked from commit 9a6b60a) Co-authored-by: Kumar Aditya <kumaraditya@python.org>
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…pythonGH-136994) (python#137082) Co-authored-by: Kumar Aditya <kumaraditya@python.org> Co-authored-by: Zachary Ware <zach@python.org>
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De-instrumenting code objects modifies the thread local bytecode for all threads as such, holding the critical section on the code object is not sufficient and leads to data races. Now, the de-instrumentation is now performed under a stop the world pause as such no thread races with executing the thread local bytecode while it is being de-instrumented.
(cherry picked from commit 9a6b60a)
Co-authored-by: Kumar Aditya kumaraditya@python.org