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gh-141044: Fix ASan leak with small threading.stack_size() #212347

gh-141044: Fix ASan leak with small threading.stack_size()

gh-141044: Fix ASan leak with small threading.stack_size() #212347

Triggered via pull request October 5, 2026 19:26
Status Failure
Total duration 59m 46s
Artifacts 2

build.yml

on: pull_request
Change detection  /  Create context from changed files
15s
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
Docs  /  Doctest
6m 14s
Docs / Doctest
Docs  /  Check EPUB
2m 23s
Docs / Check EPUB
Check if Autoconf files are up to date
27s
Check if Autoconf files are up to date
Check if generated files are up to date
4m 47s
Check if generated files are up to date
C API Docs  /  Check if all C APIs are documented
13s
C API Docs / Check if all C APIs are documented
Ubuntu (installed)  /  build, install and test
5m 54s
Ubuntu (installed) / build, install and test
iOS
18m 29s
iOS
Emscripten  /  build and test
15m 3s
Emscripten / build and test
WASI  /  build and test
4m 28s
WASI / build and test
Hypothesis tests on Ubuntu
10m 45s
Hypothesis tests on Ubuntu
Lazy imports enabled  /  Run Tests with lazy_imports=all
12m 36s
Lazy imports enabled / Run Tests with lazy_imports=all
Cross build Linux
5m 15s
Cross build Linux
Matrix: build-android
Docs  /  ...  /  Check for removed HTML IDs
Docs / Check for removed HTML IDs / Check for removed HTML IDs
All required checks pass
4s
All required checks pass
Fit to window
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Annotations

20 errors, 2 warnings, and 23 notices
Docs / Check EPUB
Process completed with exit code 1.
Android (aarch64)
The job was not acquired by Runner of type hosted even after multiple attempts
Ubuntu SSL tests (ubuntu-26.04, aws-lc, 5.10.0)
The job was not acquired by Runner of type hosted even after multiple attempts
Ubuntu SSL tests (ubuntu-26.04, openssl, 3.6.5)
The job was not acquired by Runner of type hosted even after multiple attempts
Address sanitizer (ubuntu-26.04)
The job was not acquired by Runner of type hosted even after multiple attempts
Ubuntu / build and test (ubuntu-26.04)
The job was not acquired by Runner of type hosted even after multiple attempts
Ubuntu (free-threading) / build and test (ubuntu-26.04)
The job was not acquired by Runner of type hosted even after multiple attempts
Emscripten / build and test
The job was not acquired by Runner of type hosted even after multiple attempts
Ubuntu SSL tests (ubuntu-26.04, openssl, 4.0.3)
The job was not acquired by Runner of type hosted even after multiple attempts
Windows / Build and test (Win32, switch-case)
The job was not acquired by Runner of type hosted even after multiple attempts
Windows / Build and test (x64, tail-call)
The job was not acquired by Runner of type hosted even after multiple attempts
Windows (free-threading) / Build and test (x64, tail-call)
The job was not acquired by Runner of type hosted even after multiple attempts
Windows / Build and test (x64, switch-case)
The job was not acquired by Runner of type hosted even after multiple attempts
Windows (free-threading) / Build and test (x64, switch-case)
The job was not acquired by Runner of type hosted even after multiple attempts
Docs / Docs
The job was not acquired by Runner of type hosted even after multiple attempts
CIFuzz / cpython3 (memory)
The job was not acquired by Runner of type hosted even after multiple attempts
macOS (free-threading) / build and test (macos-26)
The hosted runner lost communication with the server. Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.
macOS / build and test (macos-26)
The hosted runner lost communication with the server. Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.
Tests
Internal server error. Correlation ID: 46f96939-16ed-4fb4-b420-e93eff328b74
All required checks pass
Process completed with exit code 1.
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 / build and test (macos-26-intel)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
Change detection / Create context from changed files
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
C API Docs / Check if all C APIs are documented
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
Docs / Check EPUB
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
Android (aarch64)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
Android (aarch64)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
Android (aarch64)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
Docs / Docs
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
Docs / Docs
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
Docs / Docs
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (memory)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (memory)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (memory)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
iOS
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
CIFuzz / cpython3 (address)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (address)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (address)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (undefined)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (undefined)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
CIFuzz / cpython3 (undefined)
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
macOS (free-threading) / build and test (macos-26)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
macOS / build and test (macos-26)
Due to capacity constraints, jobs targeting macOS arm64 runners may experience longer queue times.
All required checks pass
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"
All required checks pass
"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

Artifacts

Produced during runtime
Name Size Digest
MSan-logs-default
209 Bytes
sha256:39e851107ba49676e3eff4b805ce802c7fd8aa0ffdef2b789d2909b65e7034bf
UBSan-logs-default
1.5 KB
sha256:c60d1229fab91dd1fe227c0197c6a6943ea342ff5e56ed38ebd8e3671ef63743