tree: https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git dev-queue head: 209f51a407348729203cd6e319e17c5c507f662e commit: 8fd81228faf637f04de07b802fa6684044c97dda [21/87] iavf: fix locking of critical sections config: powerpc64-randconfig-r035-20210616 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git/comm... git remote add tnguy-next-queue https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git git fetch --no-tags tnguy-next-queue dev-queue git checkout 8fd81228faf637f04de07b802fa6684044c97dda # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 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 >>): vim +145 drivers/net/ethernet/intel/iavf/iavf_main.c 133 134 /** 135 * iavf_timeout - try to set bit but give up after timeout 136 * @adapter: board private structure 137 * @bit: bit to set 138 * @msecs: timeout in msecs 139 * 140 * Returns 0 on success, negative on failure 141 **/ 142 static inline int iavf_lock_timeout(struct iavf_adapter *adapter, 143 enum iavf_critical_section_t bit, 144 unsigned int msecs) 146 unsigned int wait, delay = 10; 147 148 for (wait = 0; wait < msecs; wait += delay) { 149 if (!test_and_set_bit(bit, &adapter->crit_section)) 150 return 0; 151 152 msleep(delay); 153 } 154 155 return -1; 156 } 157 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org