reproduce (this is a W=1 build): # https://github.com/dsahern/linux/commit/647ca7f9d1a391f033597ff7e34d230019c33421 git remote add dsahern https://github.com/dsahern/linux git fetch --no-tags dsahern perf-trace-ioctl-wip git checkout 647ca7f9d1a391f033597ff7e34d230019c33421 git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # 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 headers_install COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 -C tools/thermal/lib COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 -C tools/lib/api COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 tools/all