Your question is Deep Linux and Internals. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Describe a time you dug into deep Linux concepts to diagnose a production issue.
Choose a real incident you personally investigated. Explain the symptoms, hypotheses, Linux internals involved, commands or instrumentation used, mitigation, root cause, and how you verified the fix. Focus on practical reasoning and production safety rather than a generic debugging checklist.