The message "loading out-of-tree module taints kernel" indicates that you have loaded a kernel module that is not part of the official Linux kernel tree. This means that the module is not part of the mainline kernel development and might not be as rigorously tested or supported.

Here's what you can do about this notice:

1. Understand the Implications:

   • Loading an out-of-tree module means that you are using a module that hasn't undergone the same level of scrutiny and testing as modules included in the official Linux kernel. This can potentially lead to stability or compatibility issues.

2. Identify the Module:

   • Determine which specific module is being loaded out-of-tree. The message should provide the name of the module. This is important information for troubleshooting.

3. Check Module Source and Compatibility:

   • Make sure that the module you're using is compatible with your specific kernel version. If it was built for a different kernel version, it might not work properly.

4. Consider the Source of the Module:

   • If the module is from a reputable source and is widely used, it may be less of a concern. However, if it's from an obscure or unverified source, exercise caution.

5. Check for Updates or Alternatives:

   • Look for updates to the module or consider if there are alternative modules available that are included in the mainline kernel.

6. Consider Building the Module from Source:

   • If the module is open source and the source code is available, you might consider compiling and building the module yourself to ensure compatibility with your specific kernel version.

7. Monitor System Stability:

   • Keep an eye on the system for any signs of instability or unusual behavior. If you experience issues, consider unloading the module and see if the problems persist.

8. Contact Support or the Module Developer:

   • If the module is essential for your system and you're experiencing problems, consider reaching out to the developer or community for support.

9. Evaluate if the Module is Necessary:

   • Consider if the module is absolutely necessary for your system's functionality. If not, it might be safer to avoid using it.

10. Keep Backups:

    • Always maintain backups of your important data and configurations in case any changes cause unexpected issues.

Remember, using out-of-tree modules can introduce risks to system stability and security. It's generally recommended to use modules included in the official Linux kernel whenever possible.