Compiling an in-tree module gives version mismatch

[tapir]

# uname -a 
Linux plebian-soquartz-model-a 6.1.0-10-arm64 #1 SMP Debian 6.1.38-1 (2023-07-14) aarch64 GNU/Linux

# apt search linux-source-6.1
linux-source-6.1/stable,now 6.1.38-1 all [installed,automatic]

# apt search linux-headers-6.1.0-10-arm64   
linux-headers-6.1.0-10-arm64/stable,now 6.1.38-1 arm64 [installed]

I'm using the linux source from the repos to build an in-tree kernel module which succeeds. When I try to load this module however I get below

modprobe: ERROR: could not insert 'snd_soc_nau8822': Exec format error

According to google this is an error when the kernel I'm on and the source I've used mismatch. Could you point me to the correct source?

[CounterPillow]

That's Debian's problem, we don't mess with the kernel package at all.

What does the output of file say about the .ko?

[tapir]

It says

snd-soc-nau8822.ko: ELF 64-bit LSB relocatable, ARM aarch64, version 1 (SYSV), BuildID[sha1]=35287feef77276111f3daadd376376800670d637, with debug_info, not stripped

But I also noticed when I try to do "make modules_install" by default the modules get installed to /lib/modules/6.1.38 whereas the default modules of the plebian is under /lib/modules/6.1.0-10-arm64

[CounterPillow]

Judging by this StackOverflow answer maybe you have to run depmod?

Either way, the source you're using should be the correct one; we ship Debian's kernel package, and those are Debian's kernel sources.

[tapir]

is there no patches applied for the board itself? can I just compile the full kernel (as I believe it might be related to my problem) and expect it to work?

[CounterPillow]

The only patches for the board are those applied by Debian itself. You can compile the full kernel package, from the sources Debian ships, and it will work.

[tapir]

thanks