(syz.0.730,8509,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xdf8356d3, computed 0xb6558d89. Applying ECC.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.730/8509 is trying to acquire lock:
ffff88803b830618 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_acquire_dquot+0x455/0xb30

but task is already holding lock:
ffff88803c44b1e0
 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_lock_global_qf+0x1e8/0x270

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #6 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}:
       lock_acquire+0x120/0x360
       down_write+0x96/0x1f0
       ocfs2_lock_global_qf+0x1e8/0x270
       ocfs2_acquire_dquot+0x2b0/0xb30
       dqget+0x7b1/0xf10
       __dquot_initialize+0x3b3/0xcb0
       ocfs2_get_init_inode+0x13b/0x1b0
       ocfs2_mknod+0x863/0x2050
       ocfs2_create+0x1a5/0x440
       path_openat+0x14f4/0x3830
       do_filp_open+0x1fa/0x410
       do_sys_openat2+0x121/0x1c0
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #5 (&ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE]){+.+.}-{4:4}:
       lock_acquire+0x120/0x360
       down_write+0x96/0x1f0
       ocfs2_lock_global_qf+0x1ca/0x270
       ocfs2_acquire_dquot+0x2b0/0xb30
       dqget+0x7b1/0xf10
       __dquot_initialize+0x3b3/0xcb0
       ocfs2_get_init_inode+0x13b/0x1b0
       ocfs2_mknod+0x863/0x2050
       ocfs2_create+0x1a5/0x440
       path_openat+0x14f4/0x3830
       do_filp_open+0x1fa/0x410
       do_sys_openat2+0x121/0x1c0
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #4 (&dquot->dq_lock){+.+.}-{4:4}:
       lock_acquire+0x120/0x360
       __mutex_lock+0x187/0x1350
       dqget+0x72a/0xf10
       dquot_transfer+0x4b8/0x6d0
       ext4_setattr+0x865/0x1bc0
       notify_change+0xb36/0xe40
       chown_common+0x40c/0x5c0
       ksys_fchown+0xea/0x160
       __x64_sys_fchown+0x7a/0x90
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #3 (&ei->xattr_sem){++++}-{4:4}:
       lock_acquire+0x120/0x360
       down_read+0x46/0x2e0
       ext4_setattr+0x855/0x1bc0
       notify_change+0xb36/0xe40
       chown_common+0x40c/0x5c0
       do_fchownat+0x161/0x270
       __x64_sys_chown+0x82/0xa0
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (jbd2_handle){++++}-{0:0}:
       lock_acquire+0x120/0x360
       start_this_handle+0x1fa7/0x21c0
       jbd2__journal_start+0x2c1/0x5b0
       jbd2_journal_start+0x2a/0x40
       ocfs2_start_trans+0x376/0x6d0
       ocfs2_shutdown_local_alloc+0x200/0xa10
       ocfs2_dismount_volume+0x201/0x8d0
       generic_shutdown_super+0x135/0x2c0
       kill_block_super+0x44/0x90
       deactivate_locked_super+0xbc/0x130
       cleanup_mnt+0x425/0x4c0
       task_work_run+0x1d4/0x260
       exit_to_user_mode_loop+0xec/0x110
       do_syscall_64+0x2bd/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&journal->j_trans_barrier){.+.+}-{4:4}:
       lock_acquire+0x120/0x360
       down_read+0x46/0x2e0
       ocfs2_start_trans+0x36a/0x6d0
       ocfs2_shutdown_local_alloc+0x200/0xa10
       ocfs2_dismount_volume+0x201/0x8d0
       generic_shutdown_super+0x135/0x2c0
       kill_block_super+0x44/0x90
       deactivate_locked_super+0xbc/0x130
       cleanup_mnt+0x425/0x4c0
       task_work_run+0x1d4/0x260
       exit_to_user_mode_loop+0xec/0x110
       do_syscall_64+0x2bd/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (sb_internal#2){.+.+}-{0:0}:
       validate_chain+0xb9b/0x2140
       __lock_acquire+0xab9/0xd20
       lock_acquire+0x120/0x360
       ocfs2_start_trans+0x26b/0x6d0
       ocfs2_acquire_dquot+0x455/0xb30
       dqget+0x7b1/0xf10
       __dquot_initialize+0x3b3/0xcb0
       ocfs2_get_init_inode+0x13b/0x1b0
       ocfs2_mknod+0x863/0x2050
       ocfs2_create+0x1a5/0x440
       path_openat+0x14f4/0x3830
       do_filp_open+0x1fa/0x410
       do_sys_openat2+0x121/0x1c0
       __x64_sys_openat+0x138/0x170
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  sb_internal#2 --> &ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE] --> &ocfs2_quota_ip_alloc_sem_key

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_quota_ip_alloc_sem_key);
                               lock(&ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE]);
                               lock(&ocfs2_quota_ip_alloc_sem_key);
  rlock(sb_internal#2);

 *** DEADLOCK ***

6 locks held by syz.0.730/8509:
 #0: ffff88803b830428 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88803c5dc3c0 (&type->i_mutex_dir_key#15){++++}-{4:4}, at: path_openat+0x8da/0x3830
 #2: ffff88803c44d240 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x15e/0x4640
 #3: ffff88811c85a0a8 (&dquot->dq_lock){+.+.}-{4:4}, at: ocfs2_acquire_dquot+0x2a3/0xb30
 #4: ffff88803c44b540 (&ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_lock_global_qf+0x1ca/0x270
 #5: ffff88803c44b1e0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_lock_global_qf+0x1e8/0x270

stack backtrace:
CPU: 1 UID: 0 PID: 8509 Comm: syz.0.730 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 print_circular_bug+0x2ee/0x310
 check_noncircular+0x134/0x160
 validate_chain+0xb9b/0x2140
 __lock_acquire+0xab9/0xd20
 lock_acquire+0x120/0x360
 ocfs2_start_trans+0x26b/0x6d0
 ocfs2_acquire_dquot+0x455/0xb30
 dqget+0x7b1/0xf10
 __dquot_initialize+0x3b3/0xcb0
 ocfs2_get_init_inode+0x13b/0x1b0
 ocfs2_mknod+0x863/0x2050
 ocfs2_create+0x1a5/0x440
 path_openat+0x14f4/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f27d2f8eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f27d3de1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f27d31d5fa0 RCX: 00007f27d2f8eba9
RDX: 000000000000275a RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007f27d3011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f27d31d6038 R14: 00007f27d31d5fa0 R15: 00007ffd79906828
 </TASK>
(syz.0.730,8509,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0x7dc2e7ff, computed 0x9456929a. Applying ECC.
(syz.0.730,8509,1):ocfs2_block_check_validate:416 ERROR: Fixed CRC32 failed: stored: 0x7dc2e7ff, computed 0x3803a0ac
(syz.0.730,8509,1):ocfs2_read_quota_phys_block:160 ERROR: status = -5
(syz.0.730,8509,1):ocfs2_quota_read:201 ERROR: status = -5
Quota error (device loop0): find_tree_dqentry: Can't read quota tree block 2
Quota error (device loop0): qtree_read_dquot: Can't read quota structure for id 0
(syz.0.730,8509,1):ocfs2_acquire_dquot:890 ERROR: status = -5
(syz.0.730,8509,1):ocfs2_mknod:317 ERROR: status = -5
(syz.0.730,8509,1):ocfs2_mknod:505 ERROR: status = -5
(syz.0.730,8509,1):ocfs2_create:678 ERROR: status = -5
