reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/280ac823486cf3ef2a002b680a99c1e162a16204
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Eduard-Zingerman/bpf-track-may_write-flags-in-liveness/20260926-071959
        git checkout 280ac823486cf3ef2a002b680a99c1e162a16204
        # 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