How to use kdump in signed kernel

Raana — Fri, 31 Jul 2020 10:10:32 GMT

Dear Team,

Currently, I'm using i.Mx8x based custom board. BSP version is, imx-yocto-L4.14.98_2.0.0_ga.

My query is, I want to capture the crash log when the kernel is getting crash/panic.

We are using 'kdump' utility to achieve this.

Here, I'm using signed (Image + signature) container (combination of Image and dtb).
This signed container will get authenticate and extract in Uboot (by using "auth_cntr") for normal boot.

There are two kernels,
- Standard (production) kernel - kernel we normally boot
- Crash (capture) kernel - kernel specially used for collecting crash dumps

I want to use the signed container for capture kernel also. As per kdump, the capture kernel will be booted from standard kernel

when the crash/panic occurred.

Is there any possibilities to extract the signed capture kernel in standard kernel?

Thank You.
Best Regards,
J.P.Raja

Re: How to use kdump in signed kernel

b36401 — Fri, 07 Aug 2020 04:20:24 GMT

Here is an article regarding to kdump usage:
https://community.nxp.com/docs/DOC-347175

i.MX Processors中的主题 Re: How to use kdump in signed kernel

How to use kdump in signed kernel

Re: How to use kdump in signed kernel