Identify Kernel Stack Overflow and Boundaries
Explore how to identify kernel stack overflow problems using the Crash tool by loading core dumps, examining backtraces, checking stack limits, and disassembling functions. This lesson helps you understand stack boundaries and recursive call patterns in kernel dump analysis.
We can use crash to diagnose kernel stack overflow problems. Let’s see how.
Loading the core dump
We begin by loading the core dump:
crash dump.202206252109 ../KSym/vmlinux-5.10.0-10-amd64
The above command will output the following to the terminal:
Examining the backtrace
We can see that the PANIC description is empty, but the backtrace shows recursive calls and ...