gh-157247: Block perf trampoline activation when the main interpreter's JIT is enabled - #157258
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@Fidget-Spinner gentle ping |
kumaraditya303
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Sep 11, 2026
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Thanks @cocolato for the PR, and @kumaraditya303 for merging it 🌮🎉.. I'm working now to backport this PR to: 3.15. |
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GH-157324 is a backport of this pull request to the 3.15 branch. |
clin1234
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…preter's JIT is enabled (python#157258)
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refer: https://docs.python.org/3/library/sys.html#sys.activate_stack_trampoline
sys.activate_stack_trampoline()checked only the current interpreter's JIT state, even thoughperf trampolinestate is shared across the process. This allowed a subinterpreter to activateperf_jitwhile the main interpreter's JIT was enabled, causing JIT executors to be published with incorrect unwind information.Check the main interpreter's JIT state instead, so subinterpreters cannot bypass the restriction.