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Title: [3.14] gh-136870: fix data races in instrumentation of bytecode (GH-136994) by miss-islington · Pull Request #137082 · python/cpython · GitHub

Open Graph Title: [3.14] gh-136870: fix data races in instrumentation of bytecode (GH-136994) by miss-islington · Pull Request #137082 · python/cpython

X Title: [3.14] gh-136870: fix data races in instrumentation of bytecode (GH-136994) by miss-islington · Pull Request #137082 · python/cpython

Description: 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 Issue: gh-136870

Open Graph Description: 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-inst...

X Description: 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-inst...

Opengraph URL: https://github.com/python/cpython/pull/137082

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c86701d gh-136870: fix data races in instrumentation of bytecode (GH-136994) kumaraditya303 Jul 24, 2025 https://github.com/python/cpython/pull/137082/commits/c86701de5b8a2a0ffc601c339a5eab1dbc2d204a
1ec680f Merge branch '3.14' into backport-9a6b60a-3.14 zware Jul 24, 2025 https://github.com/python/cpython/pull/137082/commits/1ec680f48b1762e2176f1f570db00e86e24ddd74
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