ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.492/5957 is trying to acquire lock:
ffff0000d027e650 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_acquire_dquot+0x5d0/0xab0 fs/ocfs2/quota_global.c:848

but task is already holding lock:
ffff0000f56db120 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1ac/0x23c fs/ocfs2/quota_global.c:314

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #6 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}:
       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:1010
       __dquot_initialize+0x2e4/0xb30 fs/quota/dquot.c:1539
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1601
       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:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xda8/0x27a0 fs/namei.c:3788
       do_filp_open+0x198/0x38c fs/namei.c:3818
       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+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

-> #5 (&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:758 [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:1010
       __dquot_initialize+0x2e4/0xb30 fs/quota/dquot.c:1539
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1601
       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:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xda8/0x27a0 fs/namei.c:3788
       do_filp_open+0x198/0x38c fs/namei.c:3818
       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+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 (&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:532
       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:397 [inline]
       mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:437
       __dquot_alloc_space+0x564/0xcfc fs/quota/dquot.c:1774
       dquot_alloc_space_nodirty include/linux/quotaops.h:293 [inline]
       dquot_alloc_space include/linux/quotaops.h:306 [inline]
       dquot_alloc_block include/linux/quotaops.h:330 [inline]
       ext4_mb_new_blocks+0xd40/0x4244 fs/ext4/mballoc.c:5740
       ext4_ext_map_blocks+0x1330/0x563c fs/ext4/extents.c:4361
       ext4_map_blocks+0x7b0/0x160c fs/ext4/inode.c:681
       ext4_getblk+0x178/0x680 fs/ext4/inode.c:892
       ext4_bread+0x3c/0x1a8 fs/ext4/inode.c:948
       ext4_append+0x23c/0x488 fs/ext4/namei.c:83
       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:4114
       do_mkdirat+0x1b8/0x3ec fs/namei.c:4139
       __do_sys_mkdirat fs/namei.c:4154 [inline]
       __se_sys_mkdirat fs/namei.c:4152 [inline]
       __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4152
       __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 (&ei->i_data_sem){++++}-{3:3}:
       down_write+0x5c/0x88 kernel/locking/rwsem.c:1573
       ext4_map_blocks+0x720/0x160c fs/ext4/inode.c:674
       mpage_map_one_extent fs/ext4/inode.c:2436 [inline]
       mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
       ext4_writepages+0xdbc/0x28fc fs/ext4/inode.c:2857
       do_writepages+0x2c4/0x50c mm/page-writeback.c:2491
       __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1622
       writeback_sb_inodes+0x870/0x1470 fs/fs-writeback.c:1913
       __writeback_inodes_wb+0x104/0x370 fs/fs-writeback.c:1984
       wb_writeback+0x420/0xfdc fs/fs-writeback.c:2089
       wb_check_background_flush fs/fs-writeback.c:2155 [inline]
       wb_do_writeback fs/fs-writeback.c:2243 [inline]
       wb_workfn+0xb40/0xe18 fs/fs-writeback.c:2270
       process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292
       worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439
       kthread+0x254/0x2e0 kernel/kthread.c:376
       ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

-> #2 (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_truncate_rec+0x694/0x192c fs/ocfs2/alloc.c:5433
       ocfs2_remove_extent+0x15b8/0x1e5c fs/ocfs2/alloc.c:5635
       ocfs2_remove_btree_range+0xd20/0x12e8 fs/ocfs2/alloc.c:5770
       ocfs2_remove_inode_range+0x14d4/0x2478 fs/ocfs2/file.c:1907
       __ocfs2_change_file_space+0x758/0xcf4 fs/ocfs2/file.c:2028
       ocfs2_fallocate+0x1f0/0x228 fs/ocfs2/file.c:2138
       vfs_fallocate+0x4a4/0x5fc fs/open.c:323
       ioctl_preallocate+0x20c/0x2b0 fs/ioctl.c:290
       file_ioctl fs/ioctl.c:-1 [inline]
       do_vfs_ioctl+0x187c/0x202c fs/ioctl.c:849
       __do_sys_ioctl fs/ioctl.c:868 [inline]
       __se_sys_ioctl fs/ioctl.c:856 [inline]
       __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856
       __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 (&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_mknod+0xd2c/0x218c fs/ocfs2/namei.c:361
       ocfs2_create+0x19c/0x51c fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xda8/0x27a0 fs/namei.c:3788
       do_filp_open+0x198/0x38c fs/namei.c:3818
       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+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 (sb_internal#3){.+.+}-{0:0}:
       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
       percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
       __sb_start_write include/linux/fs.h:1891 [inline]
       sb_start_intwrite include/linux/fs.h:2013 [inline]
       ocfs2_start_trans+0x20c/0x6f4 fs/ocfs2/journal.c:372
       ocfs2_acquire_dquot+0x5d0/0xab0 fs/ocfs2/quota_global.c:848
       dqget+0x638/0xa98 fs/quota/dquot.c:1010
       __dquot_initialize+0x2e4/0xb30 fs/quota/dquot.c:1539
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1601
       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:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xda8/0x27a0 fs/namei.c:3788
       do_filp_open+0x198/0x38c fs/namei.c:3818
       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+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

other info that might help us debug this:

Chain exists of:
  sb_internal#3 --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7 --> &ocfs2_quota_ip_alloc_sem_key

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_quota_ip_alloc_sem_key);
                               lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7);
                               lock(&ocfs2_quota_ip_alloc_sem_key);
  lock(sb_internal#3);

 *** DEADLOCK ***

6 locks held by syz.0.492/5957:
 #0: ffff0000d027e460 (sb_writers#17){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:402
 #1: ffff0000f56d9808 (&type->i_mutex_dir_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #1: ffff0000f56d9808 (&type->i_mutex_dir_key#11){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
 #1: ffff0000f56d9808 (&type->i_mutex_dir_key#11){+.+.}-{3:3}, at: path_openat+0x5dc/0x27a0 fs/namei.c:3788
 #2: ffff0000f5403488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #2: ffff0000f5403488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x110/0x3d40 fs/ocfs2/suballoc.c:804
 #3: ffff0000f571c0a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x254/0xab0 fs/ocfs2/quota_global.c:811
 #4: ffff0000f56db488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #4: ffff0000f56db488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x190/0x23c fs/ocfs2/quota_global.c:313
 #5: ffff0000f56db120 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1ac/0x23c fs/ocfs2/quota_global.c:314

stack backtrace:
CPU: 1 PID: 5957 Comm: syz.0.492 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
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
 percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
 __sb_start_write include/linux/fs.h:1891 [inline]
 sb_start_intwrite include/linux/fs.h:2013 [inline]
 ocfs2_start_trans+0x20c/0x6f4 fs/ocfs2/journal.c:372
 ocfs2_acquire_dquot+0x5d0/0xab0 fs/ocfs2/quota_global.c:848
 dqget+0x638/0xa98 fs/quota/dquot.c:1010
 __dquot_initialize+0x2e4/0xb30 fs/quota/dquot.c:1539
 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1601
 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:3490 [inline]
 open_last_lookups fs/namei.c:3558 [inline]
 path_openat+0xda8/0x27a0 fs/namei.c:3788
 do_filp_open+0x198/0x38c fs/namei.c:3818
 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+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