Instructions for enabling Memory Tagging Extension for the kernel on Pixel 8 by Kees Cook.
The instructions describe how to enable kernel MTE in the reporting mode. Enabling MTE as a mitigation for kernel memory corruptions requires additionally passing
kasan.fault=panic to the kernel command-line as pointed out by Andrey Konovalov.MTE as a kernel mitigation is still an experimental feature and requires improvements as previously pointed out by Mark Brand.