tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a0d54b4f5b219fb31f0776e9f53aa137e78ae431 commit: 7b285f41f7376dc37e7fad1e803995fd39f42848 media: ipu3-cio2: Introduce CIO2_LOP_ENTRIES constant date: 4 months ago config: ia64-randconfig-s031-20210112 (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 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: v0.6.3-208-g46a52ca4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7b285f41f7376dc37e7fad1e803995fd39f42848 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" vim +163 drivers/media/pci/intel/ipu3/ipu3-cio2.c 154 155 /* Initialize fpbt entries to point to dummy frame */ 156 static void cio2_fbpt_entry_init_dummy(struct cio2_device *cio2, 157 struct cio2_fbpt_entry 158 entry[CIO2_MAX_LOPS]) 159 { 160 unsigned int i; 161 162 entry[0].first_entry.first_page_offset = 0; 164 entry[1].second_entry.last_page_available_bytes = CIO2_PAGE_SIZE - 1; 165 166 for (i = 0; i < CIO2_MAX_LOPS; i++) 167 entry[i].lop_page_addr = cio2->dummy_lop_bus_addr >> PAGE_SHIFT; 168 169 cio2_fbpt_entry_enable(cio2, entry); 170 } 171 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org