tree: https://github.com/norov/linux find_bit_smallconst_v4 head: 747508d50b9b17dcf850b2a9c07156bf52e147df commit: dc7e9fd8e17193278b35c65afb44911d93f82dd9 [10/13] lib: add fast path for find_next_*_bit() config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 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://github.com/norov/linux/commit/dc7e9fd8e17193278b35c65afb44911d93f... git remote add norov https://github.com/norov/linux git fetch --no-tags norov find_bit_smallconst_v4 git checkout dc7e9fd8e17193278b35c65afb44911d93f82dd9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 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 bfq_pos_tree_add_move() references the variable __initdata initcall_level_names. This is often because bfq_pos_tree_add_move lacks a __initdata annotation or the annotation of initcall_level_names is wrong. The below error/warnings are from parent commit: << WARNING: modpost: vmlinux.o(.text.unlikely+0x251f8): Section mismatch in reference from the function bitmap_equal() to the variable .init.rodata:__setup_str_initcall_blacklist << WARNING: modpost: vmlinux.o(.data+0x159ca90): Section mismatch in reference from the variable qed_mfw_legacy_maps to the variable .init.rodata:__setup_str_initcall_blacklist << WARNING: modpost: vmlinux.o(.data+0x159cba0): Section mismatch in reference from the variable qed_mfw_ext_maps to the variable .init.rodata:__setup_str_initcall_blacklist << WARNING: modpost: vmlinux.o(.data+0x15a7710): Section mismatch in reference from the variable qede_forced_speed_maps to the variable .init.rodata:__setup_str_initcall_blacklist --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org