tree: https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git ftrace/core head: fed240d9c9743815fcbc0ca5c0913292ce1f25e2 commit: 4ee1b4cac236650979a5d9b745bb0a83efde3a46 [42/69] bootconfig: Cleanup dummy headers in tools/bootconfig config: xtensa-randconfig-r033-20211019 (attached as .config) compiler: xtensa-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git/c... git remote add rostedt-trace https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git git fetch --no-tags rostedt-trace ftrace/core git checkout 4ee1b4cac236650979a5d9b745bb0a83efde3a46 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=xtensa SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): The function __blake2s_init() references the function __init memblock_alloc_try_nid(). This is often because __blake2s_init lacks a __init annotation or the annotation of memblock_alloc_try_nid is wrong. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org