tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/ww_rt_mutex head: 401531ec0e4c84f3d26d07d1171f893fee6a08aa commit: 401531ec0e4c84f3d26d07d1171f893fee6a08aa [18/18] locking/ww_mutex: test_ww_rt_mutex config: powerpc64-randconfig-s031-20210718 (attached as .config) compiler: powerpc-linux-gcc (GCC) 10.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue locking/ww_rt_mutex git checkout 401531ec0e4c84f3d26d07d1171f893fee6a08aa # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc 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 errors (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org