I have compiled a linaro-hikey kernel following the instructions in https://source.android.com/source/devices#620hikey
Kernel version is 4.9.28,
cross compilers are aarch64-linux-android-*
and I enabled loadable module support in the config.
I created a new boot image using the built images and flashed them.
I have a very simple Hello World kernel module that I want to load.
I compiled it using the same kernel source directory and the same cross compilers.
Versions are matching.
I pushed the .ko file, and su to root on the device.
Now the problem is I get "failed to load, …, Operation not permitted"
when I do the insmod on the device!
I ran the insmod as root and tried 777 permission on the module file.
I even turned off enforcing, but nothing changed.
And there’s nothing being logged in dmesg.
How can I load the module?