ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.2.387/6318 is trying to acquire lock:
ffff0000f5e0bf60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1ac/0x23c fs/ocfs2/quota_global.c:314

but task is already holding lock:
ffff0000f5e0c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
ffff0000f5e0c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x190/0x23c fs/ocfs2/quota_global.c:313

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #6 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}:
       down_write+0x5c/0x88 kernel/locking/rwsem.c:1573
       inode_lock include/linux/fs.h:764 [inline]
       ocfs2_lock_global_qf+0x190/0x23c fs/ocfs2/quota_global.c:313
       ocfs2_acquire_dquot+0x260/0xab0 fs/ocfs2/quota_global.c:816
       dqget+0x638/0xa98 fs/quota/dquot.c:1013
       __dquot_initialize+0x2e4/0xb30 fs/quota/dquot.c:1542
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1604
       ocfs2_get_init_inode+0x140/0x1b4 fs/ocfs2/namei.c:202
       ocfs2_mknod+0x7d4/0x218c fs/ocfs2/namei.c:310
       ocfs2_create+0x19c/0x51c fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3533 [inline]
       open_last_lookups fs/namei.c:3601 [inline]
       path_openat+0xda8/0x27a0 fs/namei.c:3831
       do_filp_open+0x198/0x38c fs/namei.c:3861
       do_sys_openat2+0x134/0x3fc fs/open.c:1320
       do_sys_open fs/open.c:1336 [inline]
       __do_sys_openat fs/open.c:1352 [inline]
       __se_sys_openat fs/open.c:1347 [inline]
       __arm64_sys_openat+0x11c/0x150 fs/open.c:1347
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x200/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #5 (&dquot->dq_lock){+.+.}-{3:3}:
       __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603
       __mutex_lock kernel/locking/mutex.c:747 [inline]
       mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
       dquot_commit+0x54/0x1c8 fs/quota/dquot.c:535
       ext4_write_dquot+0x1b4/0x320 fs/ext4/super.c:6817
       ext4_mark_dquot_dirty+0xe8/0x150 fs/ext4/super.c:6894
       mark_dquot_dirty fs/quota/dquot.c:400 [inline]
       mark_all_dquot_dirty+0x1f8/0x424 fs/quota/dquot.c:440
       __dquot_free_space+0x768/0xaa4 fs/quota/dquot.c:1967
       dquot_free_space_nodirty include/linux/quotaops.h:372 [inline]
       dquot_free_space include/linux/quotaops.h:377 [inline]
       dquot_free_block include/linux/quotaops.h:388 [inline]
       ext4_mb_clear_bb fs/ext4/mballoc.c:6153 [inline]
       ext4_free_blocks+0x18dc/0x2468 fs/ext4/mballoc.c:6283
       ext4_remove_blocks fs/ext4/extents.c:2541 [inline]
       ext4_ext_rm_leaf fs/ext4/extents.c:2707 [inline]
       ext4_ext_remove_space+0x1618/0x3b98 fs/ext4/extents.c:2955
       ext4_ext_truncate+0x170/0x218 fs/ext4/extents.c:4491
       ext4_truncate+0xa00/0x1090 fs/ext4/inode.c:4302
       ext4_evict_inode+0xbd0/0x1264 fs/ext4/inode.c:288
       evict+0x3d8/0x824 fs/inode.c:705
       iput_final fs/inode.c:1834 [inline]
       iput+0x728/0x7e8 fs/inode.c:1860
       ext4_process_orphan+0x24c/0x2c0 fs/ext4/orphan.c:358
       ext4_orphan_cleanup+0x964/0x1090 fs/ext4/orphan.c:472
       __ext4_fill_super fs/ext4/super.c:5574 [inline]
       ext4_fill_super+0x5af8/0x63bc fs/ext4/super.c:5693
       get_tree_bdev+0x35c/0x54c fs/super.c:1377
       ext4_get_tree+0x28/0x38 fs/ext4/super.c:5723
       vfs_get_tree+0x90/0x278 fs/super.c:1584
       do_new_mount+0x228/0x804 fs/namespace.c:3078
       path_mount+0x5ac/0xe6c fs/namespace.c:3408
       do_mount fs/namespace.c:3421 [inline]
       __do_sys_mount fs/namespace.c:3629 [inline]
       __se_sys_mount fs/namespace.c:3606 [inline]
       __arm64_sys_mount+0x4a0/0x5a0 fs/namespace.c:3606
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #4 (&ei->i_data_sem){++++}-{3:3}:
       down_read+0x64/0x300 kernel/locking/rwsem.c:1520
       ext4_map_blocks+0x270/0x160c fs/ext4/inode.c:606
       ext4_append+0x1bc/0x488 fs/ext4/namei.c:75
       ext4_init_new_dir+0x270/0x4f0 fs/ext4/namei.c:3030
       ext4_mkdir+0x3b8/0xa28 fs/ext4/namei.c:3076
       vfs_mkdir+0x314/0x4d8 fs/namei.c:4157
       do_mkdirat+0x1b8/0x3ec fs/namei.c:4182
       __do_sys_mkdirat fs/namei.c:4197 [inline]
       __se_sys_mkdirat fs/namei.c:4195 [inline]
       __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4195
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #3 (jbd2_handle){++++}-{0:0}:
       wait_transaction_locked+0x184/0x23c fs/jbd2/transaction.c:177
       add_transaction_credits+0x104/0xaf0 fs/jbd2/transaction.c:-1
       start_this_handle+0x4dc/0x125c fs/jbd2/transaction.c:422
       jbd2__journal_restart+0x1c8/0x678 fs/jbd2/transaction.c:815
       jbd2_journal_restart+0x30/0x40 fs/jbd2/transaction.c:827
       ocfs2_extend_trans+0x2d8/0x864 fs/ocfs2/journal.c:459
       ocfs2_extend_rotate_transaction fs/ocfs2/alloc.c:2297 [inline]
       ocfs2_try_to_merge_extent+0xb54/0x17e0 fs/ocfs2/alloc.c:3805
       ocfs2_split_extent+0x149c/0x1b84 fs/ocfs2/alloc.c:5131
       ocfs2_change_extent_flag+0x8a0/0xb60 fs/ocfs2/alloc.c:5222
       ocfs2_mark_extent_written+0x2e4/0x630 fs/ocfs2/alloc.c:5268
       ocfs2_dio_end_io_write fs/ocfs2/aops.c:2367 [inline]
       ocfs2_dio_end_io+0x6a8/0x1098 fs/ocfs2/aops.c:2451
       dio_complete+0x218/0x640 fs/direct-io.c:271
       __blockdev_direct_IO+0x27f0/0x31e0 fs/direct-io.c:1320
       ocfs2_direct_IO+0x208/0x278 fs/ocfs2/aops.c:2488
       generic_file_direct_write+0x104/0x2b4 mm/filemap.c:3787
       __generic_file_write_iter+0x144/0x250 mm/filemap.c:3945
       ocfs2_file_write_iter+0x13ac/0x1cd0 fs/ocfs2/file.c:2469
       do_iter_readv_writev fs/read_write.c:-1 [inline]
       do_iter_write+0x520/0x93c fs/read_write.c:861
       vfs_iter_write+0x88/0xac fs/read_write.c:902
       iter_file_splice_write+0x528/0xa38 fs/splice.c:685
       do_splice_from fs/splice.c:763 [inline]
       direct_splice_actor+0xe4/0x138 fs/splice.c:950
       splice_direct_to_actor+0x3ec/0x9e4 fs/splice.c:896
       do_splice_direct+0x168/0x25c fs/splice.c:1002
       do_sendfile+0x460/0xc8c fs/read_write.c:1255
       __do_sys_sendfile64 fs/read_write.c:1323 [inline]
       __se_sys_sendfile64 fs/read_write.c:1309 [inline]
       __arm64_sys_sendfile64+0x138/0x374 fs/read_write.c:1309
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #2 (&journal->j_trans_barrier){.+.+}-{3:3}:
       down_read+0x64/0x300 kernel/locking/rwsem.c:1520
       ocfs2_start_trans+0x38c/0x6f4 fs/ocfs2/journal.c:374
       ocfs2_modify_bh+0xd8/0x44c fs/ocfs2/quota_local.c:101
       ocfs2_local_read_info+0x1054/0x13c4 fs/ocfs2/quota_local.c:764
       dquot_load_quota_sb+0x68c/0x998 fs/quota/dquot.c:2495
       dquot_load_quota_inode+0x274/0x4dc fs/quota/dquot.c:2532
       ocfs2_enable_quotas+0x17c/0x3c4 fs/ocfs2/super.c:926
       ocfs2_fill_super+0x32f8/0x417c fs/ocfs2/super.c:1139
       mount_bdev+0x264/0x35c fs/super.c:1454
       ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186
       legacy_get_tree+0xd8/0x174 fs/fs_context.c:632
       vfs_get_tree+0x90/0x278 fs/super.c:1584
       do_new_mount+0x228/0x804 fs/namespace.c:3078
       path_mount+0x5ac/0xe6c fs/namespace.c:3408
       do_mount fs/namespace.c:3421 [inline]
       __do_sys_mount fs/namespace.c:3629 [inline]
       __se_sys_mount fs/namespace.c:3606 [inline]
       __arm64_sys_mount+0x4a0/0x5a0 fs/namespace.c:3606
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #1 (sb_internal#4){.+.+}-{0:0}:
       __lock_release kernel/locking/lockdep.c:5390 [inline]
       lock_release+0x308/0x90c kernel/locking/lockdep.c:5696
       up_write+0x48/0x5c0 kernel/locking/rwsem.c:1625
       inode_unlock include/linux/fs.h:769 [inline]
       ocfs2_free_ac_resource fs/ocfs2/suballoc.c:126 [inline]
       ocfs2_free_alloc_context+0x94/0x18c fs/ocfs2/suballoc.c:140
       ocfs2_write_begin_nolock+0x39ec/0x3a80 fs/ocfs2/aops.c:1827
       ocfs2_write_begin+0x1b4/0x318 fs/ocfs2/aops.c:1906
       generic_perform_write+0x240/0x508 mm/filemap.c:3862
       __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
       ocfs2_file_write_iter+0x13ac/0x1cd0 fs/ocfs2/file.c:2469
       do_iter_readv_writev fs/read_write.c:-1 [inline]
       do_iter_write+0x520/0x93c fs/read_write.c:861
       vfs_writev fs/read_write.c:934 [inline]
       do_pwritev+0x1e8/0x338 fs/read_write.c:1031
       __do_sys_pwritev2 fs/read_write.c:1090 [inline]
       __se_sys_pwritev2 fs/read_write.c:1081 [inline]
       __arm64_sys_pwritev2+0xdc/0x110 fs/read_write.c:1081
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3095 [inline]
       check_prevs_add kernel/locking/lockdep.c:3214 [inline]
       validate_chain kernel/locking/lockdep.c:3830 [inline]
       __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063
       lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5676
       down_write+0x5c/0x88 kernel/locking/rwsem.c:1573
       ocfs2_lock_global_qf+0x1ac/0x23c fs/ocfs2/quota_global.c:314
       ocfs2_acquire_dquot+0x260/0xab0 fs/ocfs2/quota_global.c:816
       dqget+0x638/0xa98 fs/quota/dquot.c:1013
       __dquot_initialize+0x2e4/0xb30 fs/quota/dquot.c:1542
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1604
       ocfs2_get_init_inode+0x140/0x1b4 fs/ocfs2/namei.c:202
       ocfs2_mknod+0x7d4/0x218c fs/ocfs2/namei.c:310
       ocfs2_create+0x19c/0x51c fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3533 [inline]
       open_last_lookups fs/namei.c:3601 [inline]
       path_openat+0xda8/0x27a0 fs/namei.c:3831
       do_filp_open+0x198/0x38c fs/namei.c:3861
       do_sys_openat2+0x134/0x3fc fs/open.c:1320
       do_sys_open fs/open.c:1336 [inline]
       __do_sys_openat fs/open.c:1352 [inline]
       __se_sys_openat fs/open.c:1347 [inline]
       __arm64_sys_openat+0x11c/0x150 fs/open.c:1347
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x200/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

other info that might help us debug this:

Chain exists of:
  &ocfs2_quota_ip_alloc_sem_key --> &dquot->dq_lock --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7);
                               lock(&dquot->dq_lock);
                               lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7);
  lock(&ocfs2_quota_ip_alloc_sem_key);

 *** DEADLOCK ***

5 locks held by syz.2.387/6318:
 #0: ffff0000d3936460 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:402
 #1: ffff0000f5fd5f48 (&type->i_mutex_dir_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
 #1: ffff0000f5fd5f48 (&type->i_mutex_dir_key#17){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3598 [inline]
 #1: ffff0000f5fd5f48 (&type->i_mutex_dir_key#17){+.+.}-{3:3}, at: path_openat+0x5dc/0x27a0 fs/namei.c:3831
 #2: ffff0000f5e0df48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
 #2: ffff0000f5e0df48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x110/0x3d40 fs/ocfs2/suballoc.c:804
 #3: ffff0000fb1bc0a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x254/0xab0 fs/ocfs2/quota_global.c:811
 #4: ffff0000f5e0c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
 #4: ffff0000f5e0c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x190/0x23c fs/ocfs2/quota_global.c:313

stack backtrace:
CPU: 0 PID: 6318 Comm: syz.2.387 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2048
 check_noncircular+0x264/0x2f8 kernel/locking/lockdep.c:2170
 check_prev_add kernel/locking/lockdep.c:3095 [inline]
 check_prevs_add kernel/locking/lockdep.c:3214 [inline]
 validate_chain kernel/locking/lockdep.c:3830 [inline]
 __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063
 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5676
 down_write+0x5c/0x88 kernel/locking/rwsem.c:1573
 ocfs2_lock_global_qf+0x1ac/0x23c fs/ocfs2/quota_global.c:314
 ocfs2_acquire_dquot+0x260/0xab0 fs/ocfs2/quota_global.c:816
 dqget+0x638/0xa98 fs/quota/dquot.c:1013
 __dquot_initialize+0x2e4/0xb30 fs/quota/dquot.c:1542
 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1604
 ocfs2_get_init_inode+0x140/0x1b4 fs/ocfs2/namei.c:202
 ocfs2_mknod+0x7d4/0x218c fs/ocfs2/namei.c:310
 ocfs2_create+0x19c/0x51c fs/ocfs2/namei.c:674
 lookup_open fs/namei.c:3533 [inline]
 open_last_lookups fs/namei.c:3601 [inline]
 path_openat+0xda8/0x27a0 fs/namei.c:3831
 do_filp_open+0x198/0x38c fs/namei.c:3861
 do_sys_openat2+0x134/0x3fc fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __arm64_sys_openat+0x11c/0x150 fs/open.c:1347
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x200/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585