reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/bytedance/kernel/commit/fe7b450226f1062ff7123939ea7ca9d7e30de61a
        git remote add bytedance https://github.com/bytedance/kernel.git
        git fetch --no-tags bytedance 5.15-velinux
        git checkout fe7b450226f1062ff7123939ea7ca9d7e30de61a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash kernel/events/ net/core/