From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: [tytso-ext4:pu 17/50] fs/ext4/super-test.c:312 super_test_init() error: 'sb' dereferencing possible ERR_PTR()
Date: Thu, 12 Nov 2026 23:11:19 +0100 [thread overview]
Message-ID: <202611122336.ExhSFMb8-lkp@intel.com> (raw)
Unfiltered warning: this smatch report is sent as-is and has not been
reviewed for false positives, so please treat it with due skepticism.
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-ext4@vger.kernel.org
TO: "Theodore Ts'o" <tytso@mit.edu>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git pu
head: 246d715a48c25a74ac372dda5e10d8f69f89b50a
commit: 1cec1055be7fc2b602f1cde94d772ec822ad6d74 [17/50] ext4: add KUnit tests for fs/ext4/super.c
:::::: branch date: 30 hours ago
:::::: commit date: 30 hours ago
config: powerpc-randconfig-2200-20261112 (https://download.01.org/0day-ci/archive/20261112/202611122336.ExhSFMb8-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 8621950157210c1fa68f20f0614cb51310ec9dff)
smatch: v0.5.0-9187-g5189e3fb
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@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202611122336.ExhSFMb8-lkp@intel.com/
smatch warnings:
fs/ext4/super-test.c:312 super_test_init() error: 'sb' dereferencing possible ERR_PTR()
vim +/sb +312 fs/ext4/super-test.c
1cec1055be7fc2 Theodore Ts'o 2026-11-11 253
1cec1055be7fc2 Theodore Ts'o 2026-11-11 254 KUNIT_DEFINE_ACTION_WRAPPER(super_test_cleanup_action, super_test_cleanup,
1cec1055be7fc2 Theodore Ts'o 2026-11-11 255 struct super_test_ctx *);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 256
1cec1055be7fc2 Theodore Ts'o 2026-11-11 257 static int super_test_init(struct kunit *test)
1cec1055be7fc2 Theodore Ts'o 2026-11-11 258 {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 259 struct super_test_ctx *ctx;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 260 struct fs_context *fc;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 261 struct super_block *sb;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 262 struct ext4_sb_info *sbi;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 263 struct inode *root_inode;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 264 int err;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 265
1cec1055be7fc2 Theodore Ts'o 2026-11-11 266 ctx = kzalloc_obj(*ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 267 KUNIT_ASSERT_NOT_NULL(test, ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 268 test->priv = ctx;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 269 active_super_test = test;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 270
1cec1055be7fc2 Theodore Ts'o 2026-11-11 271 ctx->bdev.bd_stats = alloc_percpu(struct disk_stats);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 272 if (!ctx->bdev.bd_stats) {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 273 kfree(ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 274 KUNIT_FAIL_AND_ABORT(test, "failed to alloc bd_stats");
1cec1055be7fc2 Theodore Ts'o 2026-11-11 275 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 276
1cec1055be7fc2 Theodore Ts'o 2026-11-11 277 fc = fs_context_for_mount(&super_test_fs_type, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 278 if (IS_ERR(fc)) {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 279 err = PTR_ERR(fc);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 280 free_percpu(ctx->bdev.bd_stats);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 281 kfree(ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 282 KUNIT_ASSERT_EQ(test, err, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 283 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 284 sb = sget_fc(fc, NULL, set_anon_super_fc);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 285 put_fs_context(fc);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 286 if (IS_ERR(sb)) {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 287 err = PTR_ERR(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 288 free_percpu(ctx->bdev.bd_stats);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 289 kfree(ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 290 KUNIT_ASSERT_EQ(test, err, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 291 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 292 ctx->sb = sb;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 293 sbi = &ctx->sbi;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 294
1cec1055be7fc2 Theodore Ts'o 2026-11-11 295 err = percpu_counter_init(&sbi->s_freeclusters_counter, 0, GFP_KERNEL);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 296 if (err)
1cec1055be7fc2 Theodore Ts'o 2026-11-11 297 goto err_sb;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 298 err = percpu_counter_init(&sbi->s_dirtyclusters_counter, 0, GFP_KERNEL);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 299 if (err) {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 300 percpu_counter_destroy(&sbi->s_freeclusters_counter);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 301 goto err_sb;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 302 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 303 err = percpu_counter_init(&sbi->s_freeinodes_counter, 0, GFP_KERNEL);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 304 if (err) {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 305 percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 306 percpu_counter_destroy(&sbi->s_freeclusters_counter);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 307 goto err_sb;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 308 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 309 ctx->counters_inited = true;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 310
1cec1055be7fc2 Theodore Ts'o 2026-11-11 311 sbi->s_sb = sb;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 @312 sb->s_fs_info = sbi;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 313 sb->s_op = &super_test_sops;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 314 #ifdef CONFIG_FS_ENCRYPTION
1cec1055be7fc2 Theodore Ts'o 2026-11-11 315 sb->s_cop = &ext4_cryptops;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 316 #endif
1cec1055be7fc2 Theodore Ts'o 2026-11-11 317 sb->s_flags |= SB_ACTIVE;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 318 sb->s_blocksize = SUPER_TEST_BLK_SIZE;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 319 sb->s_blocksize_bits = SUPER_TEST_BLK_BITS;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 320 sb->s_maxbytes = MAX_LFS_FILESIZE;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 321 sb->s_time_gran = 1;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 322 sb->s_xattr = ext4_xattr_handlers;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 323 strscpy(sb->s_id, "ext4_super_kunit", sizeof(sb->s_id));
1cec1055be7fc2 Theodore Ts'o 2026-11-11 324
1cec1055be7fc2 Theodore Ts'o 2026-11-11 325 inode_init_once(&ctx->bd_inode);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 326 ctx->bd_inode.i_sb = sb;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 327 ctx->bd_inode.i_blkbits = SUPER_TEST_BLK_BITS;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 328 ctx->bd_inode.i_mapping = &ctx->bd_inode.i_data;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 329 ctx->bd_inode.i_data.host = &ctx->bd_inode;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 330 ctx->bdev_queue.limits.logical_block_size = 512;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 331 ctx->bdev_queue.limits.dma_alignment = 511;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 332 ctx->bdev_disk.part0 = &ctx->bdev;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 333 ctx->bdev_disk.queue = &ctx->bdev_queue;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 334 ctx->bdev.bd_disk = &ctx->bdev_disk;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 335 ctx->bdev.bd_queue = &ctx->bdev_queue;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 336 ctx->bdev.bd_mapping = &ctx->bd_inode.i_data;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 337 bdev_clear_flag(&ctx->bdev, BD_READ_ONLY);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 338 sb->s_bdev = &ctx->bdev;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 339
1cec1055be7fc2 Theodore Ts'o 2026-11-11 340 bgl_lock_init(&ctx->bgl);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 341 sbi->s_blockgroup_lock = &ctx->bgl;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 342
1cec1055be7fc2 Theodore Ts'o 2026-11-11 343 sbi->s_es = &ctx->es;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 344 ctx->es.s_magic = cpu_to_le16(EXT4_SUPER_MAGIC);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 345 ctx->es.s_first_data_block = cpu_to_le32(SUPER_TEST_FIRST_DATA_BLK);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 346 ctx->es.s_rev_level = cpu_to_le32(EXT4_DYNAMIC_REV);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 347 ctx->es.s_creator_os = cpu_to_le32(EXT4_OS_LINUX);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 348 ctx->es.s_inodes_count = cpu_to_le32(SUPER_TEST_TOTAL_INODES);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 349 ctx->es.s_inodes_per_group = cpu_to_le32(SUPER_TEST_INODES_PER_GRP);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 350 ctx->es.s_blocks_per_group = cpu_to_le32(SUPER_TEST_BLOCKS_PER_GRP);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 351 ctx->es.s_clusters_per_group = cpu_to_le32(SUPER_TEST_BLOCKS_PER_GRP);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 352 ctx->es.s_first_ino = cpu_to_le32(SUPER_TEST_FIRST_INO);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 353 ctx->es.s_inode_size = cpu_to_le16(SUPER_TEST_INODE_SIZE);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 354 ctx->es.s_min_extra_isize = cpu_to_le16(SUPER_TEST_EXTRA_ISIZE);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 355 ctx->es.s_want_extra_isize = cpu_to_le16(SUPER_TEST_EXTRA_ISIZE);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 356 ctx->es.s_desc_size = cpu_to_le16(EXT4_MIN_DESC_SIZE_64BIT);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 357 ctx->es.s_reserved_gdt_blocks = cpu_to_le16(SUPER_TEST_RSV_GDT_BLKS);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 358 ctx->es.s_errors = cpu_to_le16(EXT4_ERRORS_RO);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 359 ctx->es.s_checksum_type = EXT4_CRC32C_CHKSUM;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 360 generate_random_uuid(ctx->es.s_uuid);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 361 ext4_blocks_count_set(&ctx->es, SUPER_TEST_TOTAL_BLKS);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 362
1cec1055be7fc2 Theodore Ts'o 2026-11-11 363 ext4_set_feature_sparse_super(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 364 ext4_set_feature_extents(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 365 ext4_set_feature_extra_isize(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 366 ext4_set_feature_metadata_csum(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 367 ext4_set_feature_64bit(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 368 sbi->s_csum_seed = ext4_chksum(~0, ctx->es.s_uuid,
1cec1055be7fc2 Theodore Ts'o 2026-11-11 369 sizeof(ctx->es.s_uuid));
1cec1055be7fc2 Theodore Ts'o 2026-11-11 370 ext4_superblock_csum_set(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 371
1cec1055be7fc2 Theodore Ts'o 2026-11-11 372 ctx->sb_bh.b_data = (char *)&ctx->es;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 373 ctx->sb_bh.b_size = sizeof(ctx->es);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 374 ctx->sb_bh.b_bdev = &ctx->bdev;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 375 atomic_set(&ctx->sb_bh.b_count, 1);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 376 set_buffer_uptodate(&ctx->sb_bh);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 377 sbi->s_sbh = &ctx->sb_bh;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 378
1cec1055be7fc2 Theodore Ts'o 2026-11-11 379 sbi->s_sb_block = 1;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 380 sbi->s_inode_size = SUPER_TEST_INODE_SIZE;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 381 sbi->s_inodes_per_block = SUPER_TEST_INODES_PER_BLK;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 382 sbi->s_inodes_per_group = SUPER_TEST_INODES_PER_GRP;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 383 sbi->s_itb_per_group = SUPER_TEST_ITB_PER_GRP;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 384 sbi->s_first_ino = SUPER_TEST_FIRST_INO;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 385 sbi->s_want_extra_isize = SUPER_TEST_EXTRA_ISIZE;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 386 sbi->s_blocks_per_group = SUPER_TEST_BLOCKS_PER_GRP;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 387 sbi->s_clusters_per_group = SUPER_TEST_BLOCKS_PER_GRP;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 388 sbi->s_cluster_ratio = 1;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 389 sbi->s_cluster_bits = 0;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 390 sbi->s_groups_count = SUPER_TEST_NGROUPS;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 391 sbi->s_gdb_count = SUPER_TEST_GDB_COUNT;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 392 sbi->s_desc_size = EXT4_MIN_DESC_SIZE_64BIT;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 393 sbi->s_desc_per_block = SUPER_TEST_BLK_SIZE / EXT4_MIN_DESC_SIZE_64BIT;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 394 sbi->s_desc_per_block_bits = ilog2(sbi->s_desc_per_block);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 395 sbi->s_resuid = make_kuid(&init_user_ns, EXT4_DEF_RESUID);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 396 sbi->s_resgid = make_kgid(&init_user_ns, EXT4_DEF_RESGID);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 397 sbi->s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 398 sbi->s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 399 sbi->s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 400 sbi->s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 401 sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 402 sbi->s_err_report_sec = 86400;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 403
1cec1055be7fc2 Theodore Ts'o 2026-11-11 404 spin_lock_init(&sbi->s_bdev_wb_lock);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 405 spin_lock_init(&sbi->s_error_lock);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 406 spin_lock_init(&sbi->s_md_lock);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 407 INIT_WORK(&sbi->s_sb_upd_work, super_test_sb_upd_work);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 408 timer_setup(&sbi->s_err_report, super_test_err_timer, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 409
1cec1055be7fc2 Theodore Ts'o 2026-11-11 410 ratelimit_state_init(&sbi->s_err_ratelimit_state,
1cec1055be7fc2 Theodore Ts'o 2026-11-11 411 DEFAULT_RATELIMIT_INTERVAL, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 412 ratelimit_state_init(&sbi->s_warning_ratelimit_state,
1cec1055be7fc2 Theodore Ts'o 2026-11-11 413 DEFAULT_RATELIMIT_INTERVAL, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 414 ratelimit_state_init(&sbi->s_msg_ratelimit_state,
1cec1055be7fc2 Theodore Ts'o 2026-11-11 415 DEFAULT_RATELIMIT_INTERVAL, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 416
1cec1055be7fc2 Theodore Ts'o 2026-11-11 417 super_setup_default_groups(ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 418
1cec1055be7fc2 Theodore Ts'o 2026-11-11 419 root_inode = new_inode(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 420 if (!root_inode) {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 421 err = -ENOMEM;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 422 goto err_counters;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 423 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 424 root_inode->i_ino = EXT4_ROOT_INO;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 425 root_inode->i_mode = S_IFDIR | 0755;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 426 root_inode->i_flags |= S_NOQUOTA;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 427 root_inode->i_op = &simple_dir_inode_operations;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 428 set_nlink(root_inode, 2);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 429 sb->s_root = d_make_root(root_inode);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 430 if (!sb->s_root) {
1cec1055be7fc2 Theodore Ts'o 2026-11-11 431 err = -ENOMEM;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 432 goto err_counters;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 433 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 434
1cec1055be7fc2 Theodore Ts'o 2026-11-11 435 up_write(&sb->s_umount);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 436
1cec1055be7fc2 Theodore Ts'o 2026-11-11 437 kunit_activate_static_stub(test, ext4_get_group_desc,
1cec1055be7fc2 Theodore Ts'o 2026-11-11 438 super_get_group_desc_stub);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 439 kunit_activate_static_stub(test, __ext4_iget, super_iget_stub);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 440
1cec1055be7fc2 Theodore Ts'o 2026-11-11 441 err = kunit_add_action_or_reset(test, super_test_cleanup_action, ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 442 KUNIT_ASSERT_EQ(test, err, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 443 return 0;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 444
1cec1055be7fc2 Theodore Ts'o 2026-11-11 445 err_counters:
1cec1055be7fc2 Theodore Ts'o 2026-11-11 446 percpu_counter_destroy(&sbi->s_freeinodes_counter);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 447 percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 448 percpu_counter_destroy(&sbi->s_freeclusters_counter);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 449 err_sb:
1cec1055be7fc2 Theodore Ts'o 2026-11-11 450 active_super_test = NULL;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 451 deactivate_locked_super(sb);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 452 rcu_barrier();
1cec1055be7fc2 Theodore Ts'o 2026-11-11 453 free_percpu(ctx->bdev.bd_stats);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 454 kfree(ctx);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 455 KUNIT_ASSERT_EQ(test, err, 0);
1cec1055be7fc2 Theodore Ts'o 2026-11-11 456 return err;
1cec1055be7fc2 Theodore Ts'o 2026-11-11 457 }
1cec1055be7fc2 Theodore Ts'o 2026-11-11 458
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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