reproduce (this is a W=1 build): git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # clang-22 might not be officially released. Try a lower version if installation fails. # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=36e483696f3bcd302cb45a77d0483c2727e3f396 git remote add axboe-block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git git fetch --no-tags axboe-block io_uring-cqe-mix git checkout 36e483696f3bcd302cb45a77d0483c2727e3f396 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash io_uring/