EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue ====================================================== WARNING: possible circular locking dependency detected 4.14.253-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor187/8620 is trying to acquire lock: (&dquot->dq_lock){+.+.}, at: [] dquot_commit+0x4d/0x3a0 fs/quota/dquot.c:469 but task is already holding lock: (&ei->i_data_sem/2){++++}, at: [] ext4_map_blocks+0x623/0x1730 fs/ext4/inode.c:649 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ei->i_data_sem/2){++++}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 ext4_map_blocks+0x29f/0x1730 fs/ext4/inode.c:577 ext4_getblk+0x98/0x3f0 fs/ext4/inode.c:992 ext4_bread+0x6c/0x1a0 fs/ext4/inode.c:1042 ext4_quota_write+0x1dd/0x490 fs/ext4/super.c:5889 write_blk+0x106/0x1e0 fs/quota/quota_tree.c:72 get_free_dqblk+0xf3/0x2a0 fs/quota/quota_tree.c:101 do_insert_tree+0x68d/0xfc0 fs/quota/quota_tree.c:308 do_insert_tree+0xdb4/0xfc0 fs/quota/quota_tree.c:339 do_insert_tree+0xdb4/0xfc0 fs/quota/quota_tree.c:339 do_insert_tree+0xdb4/0xfc0 fs/quota/quota_tree.c:339 dq_insert_tree fs/quota/quota_tree.c:365 [inline] qtree_write_dquot+0x18a/0x4e0 fs/quota/quota_tree.c:384 v2_write_dquot+0x10f/0x240 fs/quota/quota_v2.c:359 dquot_acquire+0x220/0x470 fs/quota/dquot.c:436 ext4_acquire_dquot+0x1b8/0x290 fs/ext4/super.c:5547 dqget+0x6a0/0xe90 fs/quota/dquot.c:892 __dquot_initialize+0x2fb/0xa70 fs/quota/dquot.c:1466 ext4_create+0x6e/0x520 fs/ext4/namei.c:2488 lookup_open+0x77a/0x1750 fs/namei.c:3241 do_last fs/namei.c:3334 [inline] path_openat+0xe08/0x2970 fs/namei.c:3569 do_filp_open+0x179/0x3c0 fs/namei.c:3603 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #1 (&s->s_dquot.dqio_sem){++++}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 v2_read_dquot+0x49/0x120 fs/quota/quota_v2.c:333 dquot_acquire+0x10e/0x470 fs/quota/dquot.c:428 ext4_acquire_dquot+0x1b8/0x290 fs/ext4/super.c:5547 dqget+0x6a0/0xe90 fs/quota/dquot.c:892 __dquot_initialize+0x2fb/0xa70 fs/quota/dquot.c:1466 ext4_create+0x6e/0x520 fs/ext4/namei.c:2488 lookup_open+0x77a/0x1750 fs/namei.c:3241 do_last fs/namei.c:3334 [inline] path_openat+0xe08/0x2970 fs/namei.c:3569 do_filp_open+0x179/0x3c0 fs/namei.c:3603 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #0 (&dquot->dq_lock){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 dquot_commit+0x4d/0x3a0 fs/quota/dquot.c:469 ext4_write_dquot+0x1ac/0x240 fs/ext4/super.c:5531 ext4_mark_dquot_dirty+0xfe/0x190 fs/ext4/super.c:5582 mark_dquot_dirty fs/quota/dquot.c:341 [inline] mark_all_dquot_dirty fs/quota/dquot.c:379 [inline] __dquot_alloc_space+0x329/0x7b0 fs/quota/dquot.c:1698 dquot_alloc_space_nodirty include/linux/quotaops.h:295 [inline] dquot_alloc_space include/linux/quotaops.h:308 [inline] dquot_alloc_block include/linux/quotaops.h:332 [inline] ext4_mb_new_blocks+0x4ac/0x3db0 fs/ext4/mballoc.c:4562 ext4_ext_map_blocks+0x2845/0x6b10 fs/ext4/extents.c:4505 ext4_map_blocks+0x675/0x1730 fs/ext4/inode.c:656 _ext4_get_block+0x187/0x480 fs/ext4/inode.c:809 __block_write_begin_int+0x35c/0x1090 fs/buffer.c:2038 ext4_write_begin+0x43e/0x1260 fs/ext4/inode.c:1344 ext4_da_write_begin+0x628/0xe70 fs/ext4/inode.c:3058 generic_perform_write+0x1c9/0x420 mm/filemap.c:3055 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180 ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44c/0x630 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb other info that might help us debug this: Chain exists of: &dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/2); lock(&s->s_dquot.dqio_sem); lock(&ei->i_data_sem/2); lock(&dquot->dq_lock); *** DEADLOCK *** 4 locks held by syz-executor187/8620: #0: (sb_writers#3){.+.+}, at: [] file_start_write include/linux/fs.h:2712 [inline] #0: (sb_writers#3){.+.+}, at: [] vfs_write+0x3d8/0x4d0 fs/read_write.c:543 #1: (&sb->s_type->i_mutex_key#10){+.+.}, at: [] inode_trylock include/linux/fs.h:739 [inline] #1: (&sb->s_type->i_mutex_key#10){+.+.}, at: [] ext4_file_write_iter+0x1cc/0xd20 fs/ext4/file.c:236 #2: (&ei->i_data_sem/2){++++}, at: [] ext4_map_blocks+0x623/0x1730 fs/ext4/inode.c:649 #3: (dquot_srcu){....}, at: [] i_dquot fs/quota/dquot.c:917 [inline] #3: (dquot_srcu){....}, at: [] __dquot_alloc_space+0x184/0x7b0 fs/quota/dquot.c:1658 stack backtrace: CPU: 0 PID: 8620 Comm: syz-executor187 Not tainted 4.14.253-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 dquot_commit+0x4d/0x3a0 fs/quota/dquot.c:469 ext4_write_dquot+0x1ac/0x240 fs/ext4/super.c:5531 ext4_mark_dquot_dirty+0xfe/0x190 fs/ext4/super.c:5582 mark_dquot_dirty fs/quota/dquot.c:341 [inline] mark_all_dquot_dirty fs/quota/dquot.c:379 [inline] __dquot_alloc_space+0x329/0x7b0 fs/quota/dquot.c:1698 dquot_alloc_space_nodirty include/linux/quotaops.h:295 [inline] dquot_alloc_space include/linux/quotaops.h:308 [inline] dquot_alloc_block include/linux/quotaops.h:332 [inline] ext4_mb_new_blocks+0x4ac/0x3db0 fs/ext4/mballoc.c:4562 ext4_ext_map_blocks+0x2845/0x6b10 fs/ext4/extents.c:4505 ext4_map_blocks+0x675/0x1730 fs/ext4/inode.c:656 _ext4_get_block+0x187/0x480 fs/ext4/inode.c:809 __block_write_begin_int+0x35c/0x1090 fs/buffer.c:2038 ext4_write_begin+0x43e/0x1260 fs/ext4/inode.c:1344 ext4_da_write_begin+0x628/0xe70 fs/ext4/inode.c:3058 generic_perform_write+0x1c9/0x420 mm/filemap.c:3055 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180 ext4_file_write_iter+0x276/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44c/0x630 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f65f27343b9 RSP: 002b:00007ffda1f7c848 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f65f2778181 RCX: 00007f65f27343b9 RDX: 000000000d4ba0ff RSI: 00000000200009c0 RDI: 0000000000000003 RBP: 0000000020010000 R08: 00007ffda1f7c870 R09: 00007ffda1f7c870 R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e R13: 00007ffda1f7c8a0 R14: 00007ffda1f7c880 R15: 0000000000000029 EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed EXT4-fs warning (device loop0): ext4_enable_quotas:5767: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop0): mount failed