tree: https://github.com/andersson/remoteproc ci-next head: b07cb939c7e2dfd373ace364d5bd0a613bdaf559 commit: 40df0a91b2a5228ded8e5f75b80d28c96c6831cd [11/19] remoteproc: add is_iomem to da_to_va config: arc-randconfig-s031-20210311 (attached as .config) compiler: arceb-elf-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: v0.6.3-262-g5e674421-dirty # https://github.com/andersson/remoteproc/commit/40df0a91b2a5228ded8e5f75b8... git remote add andersson-remoteproc https://github.com/andersson/remoteproc git fetch --no-tags andersson-remoteproc ci-next git checkout 40df0a91b2a5228ded8e5f75b80d28c96c6831cd # 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=arc 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 >>)" drivers/remoteproc/remoteproc_coredump.c:169:53: sparse: expected void const volatile [noderef] __iomem *addr drivers/remoteproc/remoteproc_coredump.c:169:53: sparse: got void *[assigned] ptr vim +169 drivers/remoteproc/remoteproc_coredump.c 150 151 static void rproc_copy_segment(struct rproc *rproc, void *dest, 152 struct rproc_dump_segment *segment, 153 size_t offset, size_t size) 154 { 155 void *ptr; 156 bool is_iomem; 157 158 if (segment->dump) { 159 segment->dump(rproc, segment, dest, offset, size); 160 } else { 161 ptr = rproc_da_to_va(rproc, segment->da + offset, size, &is_iomem); 162 if (!ptr) { 163 dev_err(&rproc->dev, 164 "invalid copy request for segment %pad with offset %zu and size %zu)\n", 165 &segment->da, offset, size); 166 memset(dest, 0xff, size); 167 } else { 168 if (is_iomem) 170 else 171 memcpy(dest, ptr, size); 172 } 173 } 174 } 175 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org