[3.12] gh-116510: Fix crash during sub-interpreter shutdown #124536
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Fix a bug that can cause a crash when sub-interpreters use "basic" single-phase extension modules. Shared objects could refer to PyGC_Head nodes that had been freed as part of interpreter shutdown.
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My fix for this issue is more minimal compared to what was done in gh-30577 (and accidentally reverted in gh-94673). The original fix untracks all GC objects and increfs them. I think that's more than required. We just need to make sure none of them refer to the GC head nodes that we are going to free. At least, I think that's enough and it fixes the weechat crash. Need to check the Kodi crash too. |
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Fix a bug that can cause a crash when sub-interpreters use "basic" single-phase extension modules. Shared objects could refer to PyGC_Head nodes that had been freed as part of interpreter shutdown.