tree: https://git.kernel.org/pub/scm/linux/kernel/git/colyli/linux-bcache.git zoned head: 9560b14e9901073c5fca5e5e6c531dbd950b2b04 commit: dbdcbd380a1847351fd02972a53ef07c1dd55065 [1/3] bcache: export bcache zone information for zoned backing device config: i386-randconfig-a005-20200526 (attached as .config) compiler: gcc-6 (Debian 6.3.0-18+deb9u1) 6.3.0 20170516 reproduce (this is a W=1 build): git checkout dbdcbd380a1847351fd02972a53ef07c1dd55065 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): ld: drivers/md/bcache/super.o: in function `bch_cached_dev_zone_init': vim +1392 drivers/md/bcache/super.c 1357 1358 /* 1359 * Initialize zone information for the bcache device, this function 1360 * assumes the bcache device has a cached device (dc != NULL), and 1361 * the cached device is zoned device (bdev_is_zoned(dc->bdev) == true). 1362 * 1363 * The following zone information of the bcache device will be set, 1364 * - zoned mode, same as the mode of zoned backing device 1365 * - zone size in sectors, same as the zoned backing device 1366 * - zones number, it is zones number of zoned backing device minus the 1367 * reserved zones for bcache super blocks. 1368 */ 1369 static int bch_cached_dev_zone_init(struct cached_dev *dc) 1370 { 1371 struct request_queue *d_q, *b_q; 1372 enum blk_zoned_model mode; 1373 1374 if (!bdev_is_zoned(dc->bdev)) 1375 return 0; 1376 1377 /* queue of bcache device */ 1378 d_q = dc->disk.disk->queue; 1379 /* queue of backing device */ 1380 b_q = bdev_get_queue(dc->bdev); 1381 1382 mode = blk_queue_zoned_model(b_q); 1383 if (mode != BLK_ZONED_NONE) { 1384 d_q->limits.zoned = mode; 1385 blk_queue_chunk_sectors(d_q, b_q->limits.chunk_sectors); 1386 /* 1387 * (dc->sb.data_offset / q->limits.chunk_sectors) is the 1388 * zones number reserved for bcache super block. By default 1389 * it is set to 1 by bcache-tools. 1390 */ 1391 d_q->nr_zones = b_q->nr_zones - 1393 } 1394 1395 return 0; 1396 } 1397 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org