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gh-94215: Reproducer for segfault in frame_setlineno() #94563

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merged 1 commit into from
Jul 7, 2022
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gh-94215: Reproducer for segfault in frame_setlineno() #94563

merged 1 commit into from
Jul 7, 2022

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tiran
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@tiran tiran commented Jul 5, 2022 •
edited by bedevere-bot
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tiran commented Jul 5, 2022

I can't promise that the change is correct. The test reproducer no longer crashes with a segfault and refleak tests do not report any reference leaks either.

@tiran tiran added type-crash A hard crash of the interpreter, possibly with a core dump needs backport to 3.11 only security fixes 🔨 test-with-buildbots Test PR w/ buildbots; report in status section labels Jul 5, 2022
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🤖 New build scheduled with the buildbot fleet by @tiran for commit 26da1e6b466408253845ac3e30933012646b6ee2 🤖

If you want to schedule another build, you need to add the ":hammer: test-with-buildbots" label again.

@bedevere-bot bedevere-bot removed the 🔨 test-with-buildbots Test PR w/ buildbots; report in status section label Jul 5, 2022
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tiran commented Jul 5, 2022

My fix is incorrect. It introduces a reference leak.

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kumaraditya303 commented Jul 5, 2022 •
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My fix is incorrect. It introduces a reference leak.

Where is the refleak ? Can you provide a link to failing buildbot? @tiran

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tiran commented Jul 5, 2022

As I said my attempt to solve the segfault introduces a refleak. You can easily reproduce the refleak by running test_pdb with test runner option -R.

@tiran tiran force-pushed the gh-94215-lineno-crash branch from 8887f4b to 05a9f9a Compare July 7, 2022 10:04
@tiran tiran changed the title gh-94215: Reproducer and fix for segfault in frame_setlineno() gh-94215: Reproducer for segfault in frame_setlineno() Jul 7, 2022
@tiran tiran marked this pull request as ready for review July 7, 2022 10:08
@tiran tiran added the tests Tests in the Lib/test dir label Jul 7, 2022
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tiran commented Jul 7, 2022

I have removed the invalid fix and cleaned up the test. I'm going to add and backport the new tests so we have a reproducer for possible ref leak and crashes available.

@tiran tiran added the skip news label Jul 7, 2022
@tiran tiran merged commit de58842 into python:main Jul 7, 2022
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Thanks @tiran for the PR 🌮🎉.. I'm working now to backport this PR to: 3.11.
🐍🍒⛏🤖 I'm not a witch! I'm not a witch!

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jul 7, 2022
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pythongh-94215: Add reproducer for segfault in frame_setlineno() (pyt…
27e0401 
…honGH-94563)

(cherry picked from commit de58842)

Co-authored-by: Christian Heimes <[email protected]>
@bedevere-bot bedevere-bot removed the needs backport to 3.11 only security fixes label Jul 7, 2022
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GH-94652 is a backport of this pull request to the 3.11 branch.

miss-islington added a commit that referenced this pull request Jul 7, 2022
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gh-94215: Add reproducer for segfault in frame_setlineno() (GH-94563)
421c4b0 
(cherry picked from commit de58842)

Co-authored-by: Christian Heimes <[email protected]>
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