tree: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git dm-5.10 head: 86958eac97c2edd72a4a36ac2c7c257aee639711 commit: 7a888ac0a16dbdff2889066f35580575c56ebf0c [3/6] dm table: stack 'chunk_sectors' limit to account for target-specific splitting config: microblaze-randconfig-r033-20200913 (attached as .config) compiler: microblaze-linux-gcc (GCC) 9.3.0 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 git checkout 7a888ac0a16dbdff2889066f35580575c56ebf0c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/md/dm-table.c: In function 'dm_calculate_queue_limits': 1507 | limits->chunk_sectors = lcm_not_zero(ti->max_io_len, | ^~~~~~~~~~~~ | min_not_zero cc1: some warnings being treated as errors # https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.gi... git remote add dm https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git git fetch --no-tags dm dm-5.10 git checkout 7a888ac0a16dbdff2889066f35580575c56ebf0c vim +1507 drivers/md/dm-table.c 1467 1468 /* 1469 * Establish the new table's queue_limits and validate them. 1470 */ 1471 int dm_calculate_queue_limits(struct dm_table *table, 1472 struct queue_limits *limits) 1473 { 1474 struct dm_target *ti; 1475 struct queue_limits ti_limits; 1476 unsigned i; 1477 enum blk_zoned_model zoned_model = BLK_ZONED_NONE; 1478 unsigned int zone_sectors = 0; 1479 1480 blk_set_stacking_limits(limits); 1481 1482 for (i = 0; i < dm_table_get_num_targets(table); i++) { 1483 blk_set_stacking_limits(&ti_limits); 1484 1485 ti = dm_table_get_target(table, i); 1486 1487 if (!ti->type->iterate_devices) 1488 goto combine_limits; 1489 1490 /* 1491 * Combine queue limits of all the devices this target uses. 1492 */ 1493 ti->type->iterate_devices(ti, dm_set_device_limits, 1494 &ti_limits); 1495 1496 if (zoned_model == BLK_ZONED_NONE && ti_limits.zoned != BLK_ZONED_NONE) { 1497 /* 1498 * After stacking all limits, validate all devices 1499 * in table support this zoned model and zone sectors. 1500 */ 1501 zoned_model = ti_limits.zoned; 1502 zone_sectors = ti_limits.chunk_sectors; 1503 } 1504 1505 /* Stack chunk_sectors if target-specific splitting is required */ 1506 if (ti->max_io_len) 1508 ti_limits.chunk_sectors); 1509 /* Set I/O hints portion of queue limits */ 1510 if (ti->type->io_hints) 1511 ti->type->io_hints(ti, &ti_limits); 1512 1513 /* 1514 * Check each device area is consistent with the target's 1515 * overall queue limits. 1516 */ 1517 if (ti->type->iterate_devices(ti, device_area_is_invalid, 1518 &ti_limits)) 1519 return -EINVAL; 1520 1521 combine_limits: 1522 /* 1523 * Merge this target's queue limits into the overall limits 1524 * for the table. 1525 */ 1526 if (blk_stack_limits(limits, &ti_limits, 0) < 0) 1527 DMWARN("%s: adding target device " 1528 "(start sect %llu len %llu) " 1529 "caused an alignment inconsistency", 1530 dm_device_name(table->md), 1531 (unsigned long long) ti->begin, 1532 (unsigned long long) ti->len); 1533 } 1534 1535 /* 1536 * Verify that the zoned model and zone sectors, as determined before 1537 * any .io_hints override, are the same across all devices in the table. 1538 * - this is especially relevant if .io_hints is emulating a disk-managed 1539 * zoned model (aka BLK_ZONED_NONE) on host-managed zoned block devices. 1540 * BUT... 1541 */ 1542 if (limits->zoned != BLK_ZONED_NONE) { 1543 /* 1544 * ...IF the above limits stacking determined a zoned model 1545 * validate that all of the table's devices conform to it. 1546 */ 1547 zoned_model = limits->zoned; 1548 zone_sectors = limits->chunk_sectors; 1549 } 1550 if (validate_hardware_zoned_model(table, zoned_model, zone_sectors)) 1551 return -EINVAL; 1552 1553 return validate_hardware_logical_block_alignment(table, limits); 1554 } 1555 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org