Core Dumps

What is a Core Dump ?

• A core dump is a snapshot of the programs memory mappings and state when it crashed.
• A core dump can be used to analyze the reason for the crash.
• A core can come from User space programs or even kernel.

- Core get generated when the user space program receives certain signal like (For detail check man -7 signal)

• Kernel is having special mechanism for booting a secondary kernel and collect the core for primary kernal.

- In linux this is done using Kdump/Kexec