Inquiring about Debugging Platform Drivers using Crash Utility for Kernel Coredump
From: Shenhar, Talel
Date: Tue Jun 20 2023 - 06:47:26 EST
Dear Linux Kernel Community,
I hope this message finds you well.
I'd like to use crash utility for postmortem of my kernel coredump
analysis.
I was able to collect coredump and able to use various operation from
within the crash utility such as irq -s, log, files and others.
I am using: crash-arm64 version: 7.3.0, gdb version: 7.6, kernel version
4.19.
My specific interest lies in debugging drivers internal state, e.g.
platform drivers.
For some hands-on experience with crash utility I'd like to start by
iterating over all the platform drivers and print their names,
However, I am finding it challenging to get started with this process
and I am uncertain of the best approach to achieve this. I have scoured
various resources for insights, but the information related to this
specific usage seems to be scattered and not exhaustive.
Given the collective expertise on this mailing list, I thought it would
be the best place to seek guidance. Specifically, I would appreciate it
if you could provide:
Any relevant documentation, guides, or tutorials to debug platform
drivers using the crash utility for kernel coredump analysis.
Some simple examples of using the crash utility to debug platform
drivers, if possible.
Any important points or common pitfalls to keep in mind while performing
this kind of analysis.
Any other tips, best practices, or recommendations to effectively debug
platform drivers using the crash utility would also be greatly appreciated.
Thank you for your time and assistance. I look forward to hearing from you.
Best regards,
Talel, Shenhar.