Overview
This release contains critical bug fixes for BPF compilation on older kernels and comprehensive test suite improvements.
On the subject of the test suite, you'll notice that I made pretty heavy use of Anthropic's Claude Sonnet 4.5 to generate the scripts. I would really appreciate some other folks Looking at the test runner (tests/run_tests.sh), the helper functions (tests/helpers/test_helpers.sh) and the individual test scripts. To be clear, I didn't just tell Claude to generate them and then check them in and say "Good to go!". I spent around three weeks getting things going. That said, I'd love to get into a good argument^wdiscussion on the way the tests work and whether they're worth running.
Key Fixes
BPF CO-RE Compatibility (Wander Lairson Costa) - Fixed build failures on RHEL 8.x and older kernels (4.18) where thread_info struct lacks the cpu field - Introduced BPF CO-RE compatibility checks allowing single binary to work across kernel versions - Made BPF compilation verbose for easier debugging (Derek Barbosa)
Test Infrastructure
This release includes extensive test infrastructure (97 commits): - 21 comprehensive tests covering all stalld functionality - Matrix testing across backends (sched_debug, queue_track) and threading modes - Automated test discovery and helper library - Configurable starvation generator for controlled testing
Test Validation
Full test suite executed on x86_64 and aarch64 architectures : - x86_64 (Fedora 42, VM): sched_debug backend 100% pass rate (19/19 tests) - aarch64 (RHEL 10, bare metal): sched_debug backend 100% pass rate (19/19 tests)
Minor test timing issues observed with queue_track backend in VM environments (2-4% failure rate) attributed to virtualization and/or architectural timing artifacts. Core functionality verified across both platforms.
Download
git tag: v1.25.1
Contributors
Full release notes: doc/RELEASE_NOTES_v1.25.1.md
Updates may require up to 24 hours to propagate to mirrors. If the following command doesn't work, please retry later:
sudo dnf upgrade --refresh --advisory=FEDORA-2025-9869343b93Please log in to add feedback.
This update has been submitted for testing by jcwillia.
This update's test gating status has been changed to 'ignored'.
This update has been pushed to testing.
This update has been submitted for stable by bodhi.
This update has been pushed to stable.