reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/d3865b4072c3244c9f89214798b6577f9e8f4ba9
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Aneesh-Kumar-K-V-Arm/dma-direct-swiotlb-handle-swiotlb-alloc-free-outside-__dma_direct_alloc_pages/20260427-195304
        git checkout d3865b4072c3244c9f89214798b6577f9e8f4ba9

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/dma/