Hi Wei, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-nonmm-unstable] [also build test WARNING on akpm-mm/mm-everything linus/master v6.12-rc4 next-20241022] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Wei-Yang/maple_tree-print-empty-for-an-empty-tree-on-mt_dump/20241019-103832 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable patch link: https://lore.kernel.org/r/20241019023716.4516-6-richard.weiyang%40gmail.com patch subject: [PATCH v4 5/5] maple_tree: add a test checking storing null config: x86_64-randconfig-123-20241022 (https://download.01.org/0day-ci/archive/20241023/202410230105.UApdwd9S-lkp@xxxxxxxxx/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241023/202410230105.UApdwd9S-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410230105.UApdwd9S-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> lib/test_maple_tree.c:1456:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *entry @@ got void [noderef] __rcu *ma_root @@ lib/test_maple_tree.c:1456:9: sparse: expected void const *entry lib/test_maple_tree.c:1456:9: sparse: got void [noderef] __rcu *ma_root >> lib/test_maple_tree.c:1456:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *entry @@ got void [noderef] __rcu *ma_root @@ lib/test_maple_tree.c:1456:9: sparse: expected void const *entry lib/test_maple_tree.c:1456:9: sparse: got void [noderef] __rcu *ma_root lib/test_maple_tree.c:1468:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *entry @@ got void [noderef] __rcu *ma_root @@ lib/test_maple_tree.c:1468:9: sparse: expected void const *entry lib/test_maple_tree.c:1468:9: sparse: got void [noderef] __rcu *ma_root lib/test_maple_tree.c:1468:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *entry @@ got void [noderef] __rcu *ma_root @@ lib/test_maple_tree.c:1468:9: sparse: expected void const *entry lib/test_maple_tree.c:1468:9: sparse: got void [noderef] __rcu *ma_root vim +1456 lib/test_maple_tree.c 1389 1390 static noinline void __init check_store_null(struct maple_tree *mt) 1391 { 1392 MA_STATE(mas, mt, 0, ULONG_MAX); 1393 1394 /* 1395 * Store NULL at range [0, ULONG_MAX] to an empty tree should result 1396 * in an empty tree 1397 */ 1398 mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE); 1399 mas_lock(&mas); 1400 mas_store_gfp(&mas, NULL, GFP_KERNEL); 1401 MT_BUG_ON(mt, !mtree_empty(mt)); 1402 mas_unlock(&mas); 1403 mtree_destroy(mt); 1404 1405 /* 1406 * Store NULL at any range to an empty tree should result in an empty 1407 * tree 1408 */ 1409 mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE); 1410 mas_lock(&mas); 1411 mas_set_range(&mas, 3, 10); 1412 mas_store_gfp(&mas, NULL, GFP_KERNEL); 1413 MT_BUG_ON(mt, !mtree_empty(mt)); 1414 mas_unlock(&mas); 1415 mtree_destroy(mt); 1416 1417 /* 1418 * Store NULL at range [0, ULONG_MAX] to a single entry tree should 1419 * result in an empty tree 1420 */ 1421 mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE); 1422 mas_lock(&mas); 1423 mas_set(&mas, 0); 1424 mas_store_gfp(&mas, &mas, GFP_KERNEL); 1425 mas_set_range(&mas, 0, ULONG_MAX); 1426 mas_store_gfp(&mas, NULL, GFP_KERNEL); 1427 MT_BUG_ON(mt, !mtree_empty(mt)); 1428 mas_unlock(&mas); 1429 mtree_destroy(mt); 1430 1431 /* 1432 * Store NULL at range [0, n] to a single entry tree should 1433 * result in an empty tree 1434 */ 1435 mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE); 1436 mas_lock(&mas); 1437 mas_set(&mas, 0); 1438 mas_store_gfp(&mas, &mas, GFP_KERNEL); 1439 mas_set_range(&mas, 0, 5); 1440 mas_store_gfp(&mas, NULL, GFP_KERNEL); 1441 MT_BUG_ON(mt, !mtree_empty(mt)); 1442 mas_unlock(&mas); 1443 mtree_destroy(mt); 1444 1445 /* 1446 * Store NULL at range [m, n] where m > 0 to a single entry tree 1447 * should still be a single entry tree 1448 */ 1449 mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE); 1450 mas_lock(&mas); 1451 mas_set(&mas, 0); 1452 mas_store_gfp(&mas, &mas, GFP_KERNEL); 1453 mas_set_range(&mas, 2, 5); 1454 mas_store_gfp(&mas, NULL, GFP_KERNEL); 1455 MT_BUG_ON(mt, mtree_empty(mt)); > 1456 MT_BUG_ON(mt, xa_is_node(mt->ma_root)); 1457 mas_unlock(&mas); 1458 mtree_destroy(mt); 1459 1460 /* 1461 * Store NULL at range [0, ULONG_MAX] to a tree with node should 1462 * result in an empty tree 1463 */ 1464 mt_init_flags(mt, MT_FLAGS_ALLOC_RANGE); 1465 mas_lock(&mas); 1466 mas_set_range(&mas, 1, 3); 1467 mas_store_gfp(&mas, &mas, GFP_KERNEL); 1468 MT_BUG_ON(mt, !xa_is_node(mt->ma_root)); 1469 mas_set_range(&mas, 0, ULONG_MAX); 1470 mas_store_gfp(&mas, NULL, GFP_KERNEL); 1471 MT_BUG_ON(mt, !mtree_empty(mt)); 1472 mas_unlock(&mas); 1473 mtree_destroy(mt); 1474 } 1475 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
