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Practicing Linux Crash/Panic Issue on Production and Cloud Server: Using Kdump + Crash

on YouTube 37m
Talkat KubeCon + CloudNativeCon + Open Source Summit China 2019 · 2019-06-24..06-26· [linux-and-operating-systems, devops-and-delivery]

speaker

name:Ben Shushu
links:none on file

resources

video:https://youtu.be/b91-n-ANpvc
slides:none on file

summary

Walks through using Kdump + crash to collect and analyze real kernel panic dumps on x86_64 and arm64, with six hands‑on experiments: null pointer panic, accessing a deleted linked list, a device‑driver crash, extracting local variables from call traces and stacks, step‑by‑step deadlock reconstruction, and manual reconstruction of a recovery call‑stack. Shows exact crash commands, vmcore capture and crash tool commands, stack layouts used to compute parameter values, and which debugging artifacts reveal the lock holder.

AI-written summary · about

chapters (7)

  1. 0:00Start
  2. 18:16Case Description
  3. 22:15Host Machine - Hung task Backtrace
  4. 29:36KSM merge list extraction
  5. 30:30Introduction to the KSM Stable Tree (Stable/Unstable tree)
  6. 32:13Automatic NUMA balancing
  7. 34:34FlaneGraph of the performance problem

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