tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git io_uring-bio-cache head: bd966393baf4c2d0d6a1fd38881c0b73f6f79d5c commit: ca5ad15372deeaf2dc37c0acc72423f9097a0f33 [2/7] bio: add allocation cache abstraction config: i386-randconfig-s031-20210309 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-262-g5e674421-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/com... git remote add block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git git fetch --no-tags block io_uring-bio-cache git checkout ca5ad15372deeaf2dc37c0acc72423f9097a0f33 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 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 >>)" block/bio.c:246:61: sparse: expected unsigned short bi_write_hint block/bio.c:246:61: sparse: got restricted blk_status_t [usertype] bi_status vim +246 block/bio.c 240 241 static inline void __bio_init(struct bio *bio) 242 { 243 bio->bi_next = NULL; 244 bio->bi_bdev = NULL; 245 bio->bi_opf = 0; 247 bio->bi_iter.bi_sector = 0; 248 bio->bi_iter.bi_size = 0; 249 bio->bi_iter.bi_idx = 0; 250 bio->bi_iter.bi_bvec_done = 0; 251 bio->bi_end_io = NULL; 252 bio->bi_private = NULL; 253 #ifdef CONFIG_BLK_CGROUP 254 bio->bi_blkg = NULL; 255 bio->bi_issue.value = 0; 256 #ifdef CONFIG_BLK_CGROUP_IOCOST 257 bio->bi_iocost_cost = 0; 258 #endif 259 #endif 260 #ifdef CONFIG_BLK_INLINE_ENCRYPTION 261 bio->bi_crypt_context = NULL; 262 #endif 263 #ifdef CONFIG_BLK_DEV_INTEGRITY 264 bio->bi_integrity = NULL; 265 #endif 266 bio->bi_vcnt = 0; 267 } 268 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org