tree: git://git.infradead.org/users/hch/block.git bvec-kmap head: dcf9fd7b54aa00cdd89251aebaa3cc713f035e26 commit: 16a8596288c6b9cb513472678d066a021314a9f7 [34/46] block: use memcpy_from_page and bvec_virt in __blk_queue_bounce config: mips-randconfig-r004-20210522 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project e84a9b9bb3051c35dea993cdad7b3d2575638f85) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu git remote add hch-block git://git.infradead.org/users/hch/block.git git fetch --no-tags hch-block bvec-kmap git checkout 16a8596288c6b9cb513472678d066a021314a9f7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 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 >>): memcpy_to_page(bvec_virt(to), page, to->bv_offset, ^~~~ include/linux/highmem.h:325:61: note: passing argument to parameter 'offset' here static inline void memcpy_to_page(struct page *page, size_t offset, ^ memcpy_to_page(bvec_virt(to), page, to->bv_offset, ^~~~~~~~~~~~~ include/linux/highmem.h:326:19: note: passing argument to parameter 'from' here const char *from, size_t len) ^ 2 warnings generated. vim +255 block/bounce.c 212 213 void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig) 214 { 215 struct bio *bio; 216 int rw = bio_data_dir(*bio_orig); 217 struct bio_vec *to, from; 218 struct bvec_iter iter; 219 unsigned i = 0; 220 bool bounce = false; 221 int sectors = 0; 222 223 bio_for_each_segment(from, *bio_orig, iter) { 224 if (i++ < BIO_MAX_VECS) 225 sectors += from.bv_len >> 9; 226 if (PageHighMem(from.bv_page)) 227 bounce = true; 228 } 229 if (!bounce) 230 return; 231 232 if (sectors < bio_sectors(*bio_orig)) { 233 bio = bio_split(*bio_orig, sectors, GFP_NOIO, &bounce_bio_split); 234 bio_chain(bio, *bio_orig); 235 submit_bio_noacct(*bio_orig); 236 *bio_orig = bio; 237 } 238 bio = bounce_clone_bio(*bio_orig); 239 240 /* 241 * Bvec table can't be updated by bio_for_each_segment_all(), 242 * so retrieve bvec from the table directly. This way is safe 243 * because the 'bio' is single-page bvec. 244 */ 245 for (i = 0, to = bio->bi_io_vec; i < bio->bi_vcnt; to++, i++) { 246 struct page *page = to->bv_page; 247 248 if (!PageHighMem(page)) 249 continue; 250 251 to->bv_page = mempool_alloc(&page_pool, GFP_NOIO); 252 inc_zone_page_state(to->bv_page, NR_BOUNCE); 253 254 if (rw == WRITE) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org