tools/checkpatch: enforce blank line after subject and add breaking-change checks#18426
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xiaoxiang781216 merged 3 commits intoapache:masterfrom Mar 9, 2026
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@maintainers, could anyone of you tell if my approach is correct or not |
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@simbit18 it is a timeout issue right?? |
…nforcement - Introduced a new flag '-b' to enforce breaking change format in commit messages. - Added checks to ensure that breaking change commits start with '!' and contain 'BREAKING CHANGE:' in the body before 'Signed-off-by'. - Updated usage instructions to reflect the new breaking change option. Signed-off-by: Arjav Patel <arjav1528@gmail.com>
…bels - Updated the check workflow to conditionally include a '-b' option for breaking change enforcement based on PR labels. - Modified the checkpatch script to support reading commit messages from stdin when using the '-m -g' flags. - Improved usage instructions to clarify the new stdin option for commit message checks. Signed-off-by: Arjav Patel <arjav1528@gmail.com>
- Added functionality to read patch content from stdin when using the '--stdin' option with the '-p' flag. - Updated usage instructions to clarify the new stdin option for patch checks. - Improved error handling for unsupported combinations of options. Signed-off-by: Arjav Patel <arjav1528@gmail.com>
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Fixes #17133
Summary
checkpatch.sh didnt require a blank line after the commit subject, so the length check could be bypassed by continuing the subject on line 2. The current changes require a blank second line and adds optional
-bbreaking-change checks (!in subject,BREAKING CHANGE:before sign-off). CI runs checkpatch with-bwhen the PR has the "breaking change" label.--stdinwith-m -gallows message-only checks from stdin.Impact
Commits that continued the subject on line 2 will now fail until a blank line is added. PRs with the "breaking change" label are validated in CI for the correct format. No build, hardware, or documentation impact.
Testing
Verified on macOS with
./tools/checkpatch.sh -m -g --stdin: bypass case is rejected, valid messages pass, and-bcorrectly enforces breaking-change format. Normal-m -g HEADpath and CI label logic were checked.