Hi Konstantin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on mkp-scsi/for-next] [also build test WARNING on v5.15-rc6 next-20211021] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Konstantin-Shelekhin/scsi-target... base: https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next config: i386-randconfig-s001-20211021 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/15d4d8f9601b04ee21f8f6042481828c4... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Konstantin-Shelekhin/scsi-target-iblock-Report-space-allocation-errors/20211021-024526 git checkout 15d4d8f9601b04ee21f8f6042481828c4c34f6b7 # 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 >>) drivers/target/target_core_iblock.c:329:57: sparse: expected restricted blk_status_t [usertype] status drivers/target/target_core_iblock.c:329:57: sparse: got int drivers/target/target_core_iblock.c:351:61: sparse: expected int new drivers/target/target_core_iblock.c:351:61: sparse: got restricted blk_status_t [usertype] bi_status vim +329 drivers/target/target_core_iblock.c 319 320 static void iblock_complete_cmd(struct se_cmd *cmd) 321 { 322 struct iblock_req *ibr = cmd->priv; 323 u8 status; 324 sense_reason_t reason; 325 326 if (!refcount_dec_and_test(&ibr->pending)) 327 return; 328 330 331 if (reason != TCM_NO_SENSE) 332 status = SAM_STAT_CHECK_CONDITION; 333 else 334 status = SAM_STAT_GOOD; 335 336 target_complete_cmd_with_sense(cmd, status, reason); 337 kfree(ibr); 338 } 339 340 static void iblock_bio_done(struct bio *bio) 341 { 342 struct se_cmd *cmd = bio->bi_private; 343 struct iblock_req *ibr = cmd->priv; 344 345 if (bio->bi_status) { 346 pr_err("bio error: %p, err: %d\n", bio, bio->bi_status); 347 /* 348 * Set the error status of the iblock request to the error 349 * status of the first failed bio. 350 */ 352 smp_mb__after_atomic(); 353 } 354 355 bio_put(bio); 356 357 iblock_complete_cmd(cmd); 358 } 359 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org