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gh-142884: Fix UAF in array.array.tofile with concurrent mutations #178316

gh-142884: Fix UAF in array.array.tofile with concurrent mutations

gh-142884: Fix UAF in array.array.tofile with concurrent mutations #178316

Triggered via pull request December 28, 2025 07:20
Status Failure
Total duration 4m 2s
Artifacts 1

build.yml

on: pull_request
Change detection  /  Create context from changed files
15s
Change detection / Create context from changed files
Matrix: build-android
Matrix: Address sanitizer
Matrix: build-macos
Matrix: build-san
Matrix: Ubuntu SSL tests with AWS-LC
Matrix: Ubuntu SSL tests with OpenSSL
Matrix: build-ubuntu
Matrix: build-windows-msi
Waiting for pending jobs
Matrix: build-windows
Matrix: CIFuzz
Docs  /  Docs
1m 48s
Docs / Docs
Docs  /  Doctest
1m 37s
Docs / Doctest
Docs  /  Check EPUB
1m 51s
Docs / Check EPUB
Check if Autoconf files are up to date
25s
Check if Autoconf files are up to date
Check if generated files are up to date
2m 8s
Check if generated files are up to date
iOS
1m 38s
iOS
WASI  /  build and test
1m 0s
WASI / build and test
Hypothesis tests on Ubuntu
1m 59s
Hypothesis tests on Ubuntu
Cross build Linux
2m 16s
Cross build Linux
All required checks pass
3s
All required checks pass
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47 errors and 16 warnings
WASI / build and test
Process completed with exit code 1.
Android (aarch64)
Process completed with exit code 1.
Android (x86_64)
Process completed with exit code 1.
macOS (free-threading) / build and test (macos-14)
Process completed with exit code 2.
macOS / build and test (macos-14)
Process completed with exit code 2.
Docs / Doctest
Process completed with exit code 2.
iOS
Process completed with exit code 1.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.5.4)
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.4.3)
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.0.18)
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.2.6)
Process completed with exit code 2.
Docs / Docs
Process completed with exit code 2.
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.3.5)
Process completed with exit code 2.
Docs / Check EPUB
Process completed with exit code 1.
Windows / Build and test (Win32)
Process completed with exit code 1.
Windows / Build and test (x64)
Process completed with exit code 1.
Windows / Build and test (x64): Modules/arraymodule.c#L1637
l-value specifies const object [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 1.1.1w)
Process completed with exit code 2.
Windows (free-threading) / Build and test (x64)
Process completed with exit code 1.
Windows (free-threading) / Build and test (x64): Modules/arraymodule.c#L1637
l-value specifies const object [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Hypothesis tests on Ubuntu
Process completed with exit code 2.
Hypothesis tests on Ubuntu: Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
Check if generated files are up to date
Process completed with exit code 2.
Ubuntu SSL tests with AWS-LC (ubuntu-24.04, 1.55.0)
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-24.04)
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-24.04): Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
Ubuntu / build and test (ubuntu-24.04)
Process completed with exit code 2.
Ubuntu / build and test (ubuntu-24.04): Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
Cross build Linux
Process completed with exit code 2.
Cross build Linux: Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
Ubuntu / build and test (ubuntu-24.04-arm)
Process completed with exit code 2.
Ubuntu / build and test (ubuntu-24.04-arm): Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
Windows / Build and test (arm64)
Process completed with exit code 1.
Windows / Build and test (arm64): Modules/arraymodule.c#L1637
l-value specifies const object [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Ubuntu (free-threading) / build and test (ubuntu-24.04-arm)
Process completed with exit code 2.
Ubuntu (free-threading) / build and test (ubuntu-24.04-arm): Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
Ubuntu (bolt) / build and test (ubuntu-24.04)
Process completed with exit code 2.
Ubuntu (bolt) / build and test (ubuntu-24.04): Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
Windows (free-threading) / Build and test (arm64)
Process completed with exit code 1.
Windows (free-threading) / Build and test (arm64): Modules/arraymodule.c#L1637
l-value specifies const object [C:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
Address sanitizer (ubuntu-24.04)
Process completed with exit code 2.
Address sanitizer (ubuntu-24.04): Modules/arraymodule.c#L1637
assignment of read-only variable ‘offset’
macOS / build and test (macos-15-intel)
Process completed with exit code 2.
Sanitizers / TSan
Process completed with exit code 2.
Sanitizers / TSan (free-threading)
Process completed with exit code 2.
Sanitizers / UBSan
Process completed with exit code 2.
All required checks pass
Process completed with exit code 1.
macOS (free-threading) / build and test (macos-14)
Already linked: /opt/homebrew/Cellar/tcl-tk/9.0.3
macOS (free-threading) / build and test (macos-14)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS (free-threading) / build and test (macos-14)
gdbm 1.26 is already installed and up-to-date. To reinstall 1.26, run: brew reinstall gdbm
macOS (free-threading) / build and test (macos-14)
xz 5.8.1 is already installed and up-to-date. To reinstall 5.8.1, run: brew reinstall xz
macOS (free-threading) / build and test (macos-14)
pkgconf 2.5.1 is already installed and up-to-date. To reinstall 2.5.1, run: brew reinstall pkgconf
macOS / build and test (macos-14)
Already linked: /opt/homebrew/Cellar/tcl-tk/9.0.3
macOS / build and test (macos-14)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-14)
gdbm 1.26 is already installed and up-to-date. To reinstall 1.26, run: brew reinstall gdbm
macOS / build and test (macos-14)
xz 5.8.1 is already installed and up-to-date. To reinstall 5.8.1, run: brew reinstall xz
macOS / build and test (macos-14)
pkgconf 2.5.1 is already installed and up-to-date. To reinstall 2.5.1, run: brew reinstall pkgconf
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-15-intel)
Already linked: /usr/local/Cellar/tcl-tk/9.0.3
macOS / build and test (macos-15-intel)
`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!
macOS / build and test (macos-15-intel)
gdbm 1.26 is already installed and up-to-date. To reinstall 1.26, run: brew reinstall gdbm
macOS / build and test (macos-15-intel)
xz 5.8.1 is already installed and up-to-date. To reinstall 5.8.1, run: brew reinstall xz
macOS / build and test (macos-15-intel)
pkgconf 2.5.1 is already installed and up-to-date. To reinstall 2.5.1, run: brew reinstall pkgconf

Artifacts

Produced during runtime
Name Size Digest
UBSan-logs-default
387 Bytes
sha256:dfed6ab92026582c151052b75e74098b5e5c5bf0ac50edb9627e2283cf9053d2