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up2urheadlights avatar Ubuntu

Compiling Kernel Fails with certificate error

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up2urheadlights

I'm trying to build the kernel from here: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/

and it fails with certificate error. I have run sudo make menuconfig, and then have edited the resulting .config file with nano to comment out "CONFIG_SYSTEM_TRUSTED_KEYS". It still fails with certificate error. The build process does ask questions about keys, and I think this is where the .config file is getting updated and resulting in the failure. If I edit the .config file afterwards "CONFIG_SYSTEM_TRUSTED_KEYS" is no longer commented out. Can anyone point out where I'm going wrong?

EDIT: Further details:

I am following this guide: https://tutorialforlinux.com/2021/03/11/how-to-install-kernel-5-12-from-source-on-ubuntu-21-04/3/ and I am using 21.04. The only difference is that I am downloading the kernel source from the git linked above. There are some pre-requisites that the guide omits (flex, bison, dwarves), but I know that and install those before hand. I get to the command where you actually build the kernel packages, and it asks a lot of questions, presumably because the ubuntu kernel config I copied previously doesn't have config values for the new kernel. One of the questions is about trusted keys, and it restores the "CONFIG_TRUSTED_SYSTEM_KEYS" config switch that I previously commented out per the guide. The build then tries to locate keys which aren't there and it fails. Commenting out "CONFIG_TRUSTED_SYSTEM_KEYS" has worked in the past.

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up2urheadlights avatar Ubuntu
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up2urheadlights

I was able to finally get this to work by instead of commenting out the variable, setting it to an empty string. For example, CONFIG_TRUSTED_SYSTEM_KEYS="" is what worked for me.

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