Hey there, I’ve dealt with this exact kind of custom kernel module hiccup before—let’s walk through the most likely fixes step by step:

1. Verify ATM Module is Configured as a Loadable Module #

The error means the atm.ko file wasn’t generated, which usually happens if ATM support wasn’t set up to compile as a module in your kernel config. Here’s how to check and fix that:

• Navigate to your kernel source directory: cd /path/to/linux-5.8.10
• If you don’t have the ncurses library installed (required for the config tool), install it first:

  sudo apt install libncurses-dev
  

• Launch the kernel configuration interface:

  make menuconfig
  

• Use arrow keys to navigate to:
  Networking support → ATM (Asynchronous Transfer Mode) support
• Ensure this option is set to M (loadable module) instead of * (built-in to kernel) or blank (disabled). Press M to toggle if needed, then save your config (press ESC twice, select "Save" and confirm).

2. Clean and Recompile Modules #

With the correct config in place, we’ll clean partial compile artifacts and rebuild modules properly:

• Clean only module-related build files (this preserves your kernel config):

  make modules_clean
  

• Rebuild all kernel modules:

  make modules
  

  Wait for compilation to finish—this may take some time depending on your hardware.
• Try installing the modules again:

  sudo make modules_install
  

3. Check for Silent Compilation Errors (If Issue Persists) #

If atm.ko still doesn’t appear, the module might have failed to compile without obvious feedback. Run a verbose compile to see detailed errors:

make modules V=1

Scroll through the output to find errors related to net/atm. A common fix here is installing missing ATM development dependencies:

sudo apt install linux-atm-dev

Then repeat the clean/recompile steps above.

4. Verify Kernel Source Integrity #

If all else fails, your kernel source archive might be corrupted. Re-download the 5.8.10 source, verify its SHA256 checksum matches the official listing, extract it, and repeat your installation steps from the start.

内容的提问来源于stack exchange，提问作者Md. Rokonuzzaman Reza