[3.14] gh-140067: Fix memory leak in sub-interpreter creation (GH-140111)#140118
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…ythonGH-140111) Fix memory leak in sub-interpreter creation caused by overwriting of the previously used `_malloced` field. Now the pointer is stored in the first word of the memory block to avoid it being overwritten accidentally. (cherry picked from commit 59547a2) Co-authored-by: Shamil <[email protected]> Co-authored-by: Kumar Aditya <[email protected]>
kumaraditya303 changed the title 
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kumaraditya303 commented Oct 14, 2025
There's a somewhat surprising failing test on gil-enabled tsan CI, will investigate later marking draft for now |
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ZeroIntensity commented Oct 14, 2025
I think that's a known failure. |
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ZeroIntensity commented Oct 14, 2025
Oh, nevermind, #140111 was what caused that known failure. |
This reverts commit c0dee26.
kumaraditya303force-pushed the backport-59547a2-3.14 branch from 61a20ac to d7e44f7Comparekumaraditya303 added the 🔨 test-with-buildbots 
bedevere-bot commented Oct 18, 2025
🤖 New build scheduled with the buildbot fleet by @kumaraditya303 for commit 150ae29 🤖 Results will be shown at: https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F140118%2Fmerge If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again. |
bedevere-bot removed the 🔨 test-with-buildbots kumaraditya303 merged commit 1d11627 into python:3.14 105 of 110 checks passed
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Fix memory leak in sub-interpreter creation caused by overwriting of the previously used
_mallocedfield. Now the pointer is stored in the first word of the memory block to avoid it being overwritten accidentally.(cherry picked from commit 59547a2)