How to use kdump in signed kernel

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How to use kdump in signed kernel

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Raana
Contributor III

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

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b36401
NXP TechSupport
NXP TechSupport

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

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