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gh-156920, gh-156698: fix ProactorEventLoop datagram transport hangs on close() and after write errors #208578

gh-156920, gh-156698: fix ProactorEventLoop datagram transport hangs on close() and after write errors

gh-156920, gh-156698: fix ProactorEventLoop datagram transport hangs on close() and after write errors #208578

Triggered via pull request September 7, 2026 17:10
Status Cancelled
Total duration 4m 57s
Artifacts 2

build.yml

on: pull_request
Change detection  /  Create context from changed files
13s
Change detection / Create context from changed files
Matrix: Address sanitizer
Matrix: build-macos
Matrix: build-san
Matrix: Ubuntu SSL tests
Matrix: build-ubuntu
Matrix: build-windows
Matrix: cifuzz
Waiting for pending jobs
Docs  /  Doctest
4m 21s
Docs / Doctest
Docs  /  Check EPUB
2m 57s
Docs / Check EPUB
Check if Autoconf files are up to date
32s
Check if Autoconf files are up to date
Check if generated files are up to date
3m 36s
Check if generated files are up to date
C API Docs  /  Check if all C APIs are documented
10s
C API Docs / Check if all C APIs are documented
Ubuntu (installed)  /  build, install and test
4m 17s
Ubuntu (installed) / build, install and test
iOS
4m 21s
iOS
Emscripten  /  build and test
4m 11s
Emscripten / build and test
WASI  /  build and test
4m 18s
WASI / build and test
Hypothesis tests on Ubuntu
4m 19s
Hypothesis tests on Ubuntu
Cross build Linux
4m 18s
Cross build Linux
Matrix: build-android
Docs  /  ...  /  Check for removed HTML IDs
2m 4s
Docs / Check for removed HTML IDs / Check for removed HTML IDs
All required checks pass
6s
All required checks pass
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84 errors, 5 warnings, and 2 notices
Docs / Docs
Process completed with exit code 2.
Docs / Check EPUB
Process completed with exit code 1.
Android (aarch64)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Emscripten / build and test
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Emscripten / build and test
The operation was canceled.
Windows (free-threading) / Build and test (x64, switch-case)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Windows (free-threading) / Build and test (x64, switch-case)
The operation was canceled.
Windows / Build and test (Win32, switch-case)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Windows / Build and test (Win32, switch-case)
The operation was canceled.
Sanitizers / TSan (free-threading)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Sanitizers / TSan (free-threading)
The operation was canceled.
Cross build Linux
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Cross build Linux
The operation was canceled.
Address sanitizer (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Address sanitizer (ubuntu-26.04)
The operation was canceled.
Windows (free-threading) / Build and test (x64, tail-call)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Windows (free-threading) / Build and test (x64, tail-call)
The operation was canceled.
Ubuntu (installed) / build, install and test
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Ubuntu (installed) / build, install and test
The operation was canceled.
Android (x86_64)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Android (x86_64)
The operation was canceled.
Windows (free-threading) / Build and test (arm64, switch-case)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Windows (free-threading) / Build and test (arm64, switch-case)
The operation was canceled.
Ubuntu / build and test (ubuntu-26.04-arm)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Ubuntu / build and test (ubuntu-26.04-arm)
The operation was canceled.
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Ubuntu (free-threading) / build and test (ubuntu-26.04-arm)
The operation was canceled.
Windows / Build and test (arm64, switch-case)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Windows / Build and test (arm64, switch-case)
The operation was canceled.
Windows / Build and test (x64, tail-call)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Windows / Build and test (x64, tail-call)
The operation was canceled.
Hypothesis tests on Ubuntu
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Hypothesis tests on Ubuntu
The operation was canceled.
WASI / build and test
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
WASI / build and test
The operation was canceled.
Docs / Check for removed HTML IDs / Check for removed HTML IDs
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Docs / Check for removed HTML IDs / Check for removed HTML IDs
The operation was canceled.
Ubuntu / build and test (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Ubuntu / build and test (ubuntu-26.04)
The operation was canceled.
Docs / Doctest
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Docs / Doctest
The operation was canceled.
Ubuntu (free-threading) / build and test (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Ubuntu (free-threading) / build and test (ubuntu-26.04)
The operation was canceled.
Sanitizers / TSan
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Sanitizers / TSan
The operation was canceled.
Windows / Build and test (x64, switch-case)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Windows / Build and test (x64, switch-case)
The operation was canceled.
Ubuntu (bolt) / build and test (ubuntu-26.04)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Ubuntu (bolt) / build and test (ubuntu-26.04)
The operation was canceled.
Sanitizers / UBSan
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Sanitizers / UBSan
The operation was canceled.
macOS (free-threading) / build and test (macos-26)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
macOS (free-threading) / build and test (macos-26)
The operation was canceled.
iOS
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
iOS
The operation was canceled.
macOS / build and test (macos-26-intel)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
macOS / build and test (macos-26-intel)
The operation was canceled.
macOS / build and test (macos-26)
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
macOS / build and test (macos-26)
The operation was canceled.
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
All required checks pass
Process completed with exit code 1.
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Tests
Canceling since a higher priority waiting request for Tests-graingert-fix-proactor-close-flush exists
Hypothesis tests on Ubuntu
No files were found with the provided path: /home/runner/work/cpython/cpython-builddir/.hypothesis/examples/. No artifacts will be uploaded.
macOS (free-threading) / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26-intel)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-26)
The following taps are not trusted: aws/tap Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required. Untap them with: brew untap aws/tap Trust specific formulae, casks and commands with: brew trust --formula <user>/<tap>/<formula> brew trust --cask <user>/<tap>/<cask> brew trust --command <user>/<tap>/<command> Whole-tap trust is broader and includes all current and future formulae, casks and commands from the listed taps. Trust whole taps with: brew trust aws/tap To disable trust checks: export HOMEBREW_NO_REQUIRE_TAP_TRUST=1 This is not recommended and will be removed in a later release. For more information, see: https://docs.brew.sh/Tap-Trust
Windows (free-threading) / Build and test (arm64, switch-case)
"The windows-11-arm label will migrate to use Visual Studio 2026 by default beginning September 21, 2026. For more information see https://github.com/actions/runner-images/issues/14602"
Windows / Build and test (arm64, switch-case)
"The windows-11-arm label will migrate to use Visual Studio 2026 by default beginning September 21, 2026. For more information see https://github.com/actions/runner-images/issues/14602"

Artifacts

Produced during runtime
Name Size Digest
UBSan-logs-default
363 Bytes
sha256:69348747485016af4fb50426fe66b25159e3c1d90540fd5a515284613c655b44
html-ids-head.json.gz
126 KB
sha256:01630b1983519811a2e65a6a9c9fe0fab6588cecd3de7e8d8a80f4a7f7518338