| name | buggy-behavior |
| description | Review a diff for behavioral defects — logic errors, broken edge cases, feature-gate bugs, and deletions that break backwards compatibility during rolling upgrades. |
| license | Apache-2.0 |
| metadata | {"copyright":"The Kubernetes Authors"} |
Skill: Buggy Behavior
Use this when reviewing a diff for behavioral defects: logic errors, broken edge cases,
and changes that break compatibility with objects created by older versions of the
controller.
Rules
Each rule in this domain is its own sub-skill. Scan the diff for violations of every
rule below.
@./logic-errors/SKILL.md
@./deleted-backwards-compatibility-code/SKILL.md
@./feature-gate-interaction-bugs/SKILL.md
@./unnecessary-guard-conditions/SKILL.md
How to report
Cite the exact file and line, describe the failure mode (what input triggers it, what
goes wrong), and classify severity (high / medium / low). Hot-path logic errors and
deleted compatibility code are high. Untested gate-off paths are typically medium.
Stray unreachable guards are low.
Return two sections:
Findings
A bullet list, one per violation, in this format:
- <High/Medium/Low> | <Finding Title>: <one-sentence explanation grounded in the diff>
Recommendations
One recommendation per finding above, numbered sequentially within this skill. Each
recommendation MUST contain all four sections below.
### Recommendation N: <short title>
**Problem**: Describe the specific issue in the diff.
**Reason**: Explain why this is a problem — what goes wrong or degrades over time.
**Solution**: Give a concrete, actionable fix. Where possible, show a before/after code snippet.
**Locations**: List every place this issue occurs, one per line, in `filepath:line` form.
