reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/e4749d23faefb3c72aa0acb948dbd2b325177576
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Artem-Blagodarenko/ext4-validate-count-against-limit-in-ext4_dx_csum_verify-_set/20260805-014713
        git checkout e4749d23faefb3c72aa0acb948dbd2b325177576

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # apt-get install llvm-dev

        # save the config file
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 ARCH=s390 
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 headers_install
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 -C tools/testing/selftests