reproduce (this is a W=1 build):
        git remote add tj-wq https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git
        git fetch tj-wq for-next
        git checkout tj-wq/for-next
        b4 shazam https://lore.kernel.org/r/20260829230517.42468-4-atomlin@atomlin.com
        # apt-get install llvm-dev

        # save the config file
        make W=1 ARCH=i386 olddefconfig
        make W=1 ARCH=i386 
        make W=1 headers_install
        make W=1 -C tools/testing/selftests