Scenario: Metastability Bug: Review Checklist

Review checklist

Review Checklist for Scenario: Metastability Bug focuses on root-cause depth, containment plan clarity, debug sequencing. The goal is to convert issue observations into mechanism-backed closure decisions.

• Crossing and reset intent are explicitly classified.

• Protocol assumptions are documented and checked.

• Critical issues have owners and dates.

• Waivers include mechanism, containment, and expiry.

• Regression matrix includes stress and milestone modes.

• Owners signed: candidate, CDC owner, DV lead.

Signoff ownership

OWNERSHIP MAP — Scenario: Metastability Bug

artifact                  owner
----------------------    -------------------------
design intent           candidate
verification evidence   CDC owner
signoff decision        DV lead

Every open CDC/RDC issue needs one accountable owner before waiver or fix.

Scenario debrief

Score each response on mechanism clarity, evidence quality, and signoff decision discipline.

INTERVIEW FLOW

classify -> explain mechanism -> propose fix -> state regression

PRACTICE SCORE

session1 62%
session2 78%
session3 89%

Debrief prompts

1. Which crossing class or reset dependency failed first?

2. What evidence changed your decision?

3. Fix, waive, or escalate and why?

Key takeaways

• State crossing class, assumptions, and owner with every issue.

• Run structural and dynamic regressions after each fix.

Common pitfalls

• Treating all warnings as equivalent risk.

• Waiving issues without containment evidence.

• Skipping reset and reconvergence stress after CDC fixes.