This document discusses post-mortem debugging in embedded Linux systems. Post-mortem debugging involves analyzing system state data collected after a crash to investigate the cause. Key data includes RAM regions, CPU states, and peripheral states. Challenges include retrieving this data without modifying critical state information and analyzing it using tools that understand the OS and CPU architecture. Example tools discussed are Lauterbach TRACE32 and Red Hat Crash, which can analyze kernel crashes, IPC issues, deadlocks, and watchdog errors.