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Fix error handling issues in _remote_debugging module #146308

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Fix error handling issues in _remote_debugging module#146308
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3.14bugs and security fixes3.15bugs and security fixesextension-modulesC modules in the Modules dirtype-refactorCode refactoring (with no changes in behavior)

Description

@pablogsal
pablogsal
opened on Mar 22, 2026

Several error handling patterns in Modules/_remote_debugging/ need cleanup:

  • Missing error checks on some code paths (e.g., varint decoding, memory allocation failures)
  • Inconsistent error propagation across platforms
  • A couple of reference counting issues on error paths

Working on a fix.

Linked PRs

Activity

  1. pablogsal
    added
    3.14bugs and security fixes
    3.15bugs and security fixes
    on Mar 22, 2026
  2. brianschubert
    added
    extension-modulesC modules in the Modules dir
    type-refactorCode refactoring (with no changes in behavior)
    on Mar 22, 2026
  3. pablogsal
    added 4 commits that reference this issue on Mar 22, 2026

    pythongh-146308: Fix error handling issues in _remote_debugging module

    719eb8f

    pythongh-146308: Fix error handling issues in _remote_debugging module

    ed3e6b5

    pythongh-146308: Fix error handling issues in _remote_debugging module

    7a0560e

    gh-146308: Fix error handling issues in _remote_debugging module (#14…

    ae6adc9
  4. brianschubert
    added a commit that references this issue on Mar 22, 2026

    [3.14] pythongh-146308: Fix error handling issues in _remote_debuggin…

    cbab7f4
  5. CuriousLearner
    added a commit that references this issue on Mar 23, 2026

    Merge branch 'main' of github.com:python/cpython into fix-pythongh-13…

    3e05fa3

  6. vstinner commented on Mar 24, 2026

    @vstinner
    vstinner
    on Mar 24, 2026
    Member

    Can this issue be closed now? Or do you plan further changes?

  7. brianschubert commented on Mar 24, 2026

    @brianschubert
    brianschubert
    on Mar 24, 2026
    Contributor

    I think these fixes still need to be backported 3.14, but that needs to be done by hand since #141934 was not backported

  8. pablogsal commented on Mar 24, 2026

    @pablogsal
    pablogsal
    on Mar 24, 2026
    MemberAuthor

    I will try to do it today

  9. pablogsal
    added a commit that references this issue on Mar 25, 2026

    [3.14] gh-146308: Fix error handling issues in _remote_debugging modu…

    58c5eda
  10. pablogsal
    closed this as completedon Mar 25, 2026
  11. KowalskiThomas
    marked remote debugging: read_pylong is missing a PyErr_Format call #148447 as a duplicate of this issue on Apr 12, 2026
  12. ljfp
    added a commit that references this issue on Apr 25, 2026

    pythongh-146308: Fix error handling issues in _remote_debugging module (

    3e5559e
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    3.14bugs and security fixes3.15bugs and security fixesextension-modulesC modules in the Modules dirtype-refactorCode refactoring (with no changes in behavior)

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