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Title: gh-99110: Initialize frame->previous in init_frame to fix segmentation fault by byllyfish · Pull Request #100182 · python/cpython · GitHub

Open Graph Title: gh-99110: Initialize frame->previous in init_frame to fix segmentation fault by byllyfish · Pull Request #100182 · python/cpython

X Title: gh-99110: Initialize frame->previous in init_frame to fix segmentation fault by byllyfish · Pull Request #100182 · python/cpython

Description: This PR fixes a segmentation fault caused by an uninitialized variable. One way to trigger the seg. fault is to use the PyFrame_New() C API. I've also run across this segmentation fault by calling asyncio.Task.get_stack() on cython based asyncio Task (in the grpcio module). The fix for #99110 needs to be back-ported to 3.11. Issue: gh-99110

Open Graph Description: This PR fixes a segmentation fault caused by an uninitialized variable. One way to trigger the seg. fault is to use the PyFrame_New() C API. I've also run across this segmentation fault by call...

X Description: This PR fixes a segmentation fault caused by an uninitialized variable. One way to trigger the seg. fault is to use the PyFrame_New() C API. I've also run across this segmentation fault by ...

Opengraph URL: https://github.com/python/cpython/pull/100182

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b2e7256 Initialize frame->previous in _PyFrame_InitializeSpecials. byllyfish Dec 12, 2022 https://github.com/python/cpython/pull/100182/commits/b2e72562707b5724917f59ffae6a5dd3931a086d
b6e290d 📜🤖 Added by blurb_it. blurb-it[bot] Dec 12, 2022 https://github.com/python/cpython/pull/100182/commits/b6e290d6c9d05d8c489d7e70b3e75ab51dcfb9c7
f667d8f Fixing Python file whitespace. (patchcheck) byllyfish Dec 12, 2022 https://github.com/python/cpython/pull/100182/commits/f667d8fb603a0ac6044c7e988e7d4d38464ded02
d679783 Move initialization of frame->previous to init_frame. byllyfish Dec 13, 2022 https://github.com/python/cpython/pull/100182/commits/d6797833bcb0fb6195de0fb23b4c2643122af69f
230b80e Move comment above function. byllyfish Dec 18, 2022 https://github.com/python/cpython/pull/100182/commits/230b80e2c5a7da57283f219f94a879602edf29ed
4e70dc5 Add frame_new function to _testcapimodule.c. byllyfish Dec 18, 2022 https://github.com/python/cpython/pull/100182/commits/4e70dc50580212e74aac4c12dd3255933fe85224
627e8d5 Remove blank line. byllyfish Dec 18, 2022 https://github.com/python/cpython/pull/100182/commits/627e8d5a177ae4566b18128dc6e90b85d3bb803c
35a4c58 Use assertIsNone kumaraditya303 Dec 23, 2022 https://github.com/python/cpython/pull/100182/commits/35a4c5820d3d7eb41995f49f5140249145aa8743
34bee72 Merge branch 'main' into fix-issue-99110 kumaraditya303 Dec 23, 2022 https://github.com/python/cpython/pull/100182/commits/34bee7281598f375345476adaac99ce98bc8cdac
2c1db99 Update Misc/NEWS.d/next/Core and Builtins/2022-12-12-01-05-16.gh-issu… kumaraditya303 Dec 23, 2022 https://github.com/python/cpython/pull/100182/commits/2c1db9974a8aea47f38609cf2821b077f211877e
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