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.0.139/4991 is trying to acquire lock:
ffff0000da75e650 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_acquire_dquot+0x5c8/0xac8 fs/ocfs2/quota_global.c:848

but task is already holding lock:
ffff0000e270bf60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1ac/0x238 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/0x238 fs/ocfs2/quota_global.c:314
       ocfs2_acquire_dquot+0x268/0xac8 fs/ocfs2/quota_global.c:816
       dqget+0x654/0xcc4 fs/quota/dquot.c:988
       __dquot_initialize+0x2fc/0xacc fs/quota/dquot.c:1517
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579
       ocfs2_get_init_inode+0x140/0x1b4 fs/ocfs2/namei.c:202
       ocfs2_mknod+0x7bc/0x2110 fs/ocfs2/namei.c:310
       ocfs2_create+0x19c/0x4f8 fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xe18/0x26bc fs/namei.c:3788
       do_filp_open+0x194/0x384 fs/namei.c:3818
       do_sys_openat2+0x134/0x3f4 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+0x118/0x14c fs/open.c:1347
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x130 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+0x190/0x238 fs/ocfs2/quota_global.c:313
       ocfs2_acquire_dquot+0x268/0xac8 fs/ocfs2/quota_global.c:816
       dqget+0x654/0xcc4 fs/quota/dquot.c:988
       __dquot_initialize+0x2fc/0xacc fs/quota/dquot.c:1517
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579
       ocfs2_get_init_inode+0x140/0x1b4 fs/ocfs2/namei.c:202
       ocfs2_mknod+0x7bc/0x2110 fs/ocfs2/namei.c:310
       ocfs2_create+0x19c/0x4f8 fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xe18/0x26bc fs/namei.c:3788
       do_filp_open+0x194/0x384 fs/namei.c:3818
       do_sys_openat2+0x134/0x3f4 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+0x118/0x14c fs/open.c:1347
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x130 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+0x190/0x1f60 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+0x50/0x1c4 fs/quota/dquot.c:507
       ext4_write_dquot+0x1b4/0x31c fs/ext4/super.c:6811
       ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6888
       mark_dquot_dirty fs/quota/dquot.c:372 [inline]
       mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412
       __dquot_alloc_space+0x560/0xce0 fs/quota/dquot.c:1752
       dquot_alloc_space_nodirty include/linux/quotaops.h:300 [inline]
       dquot_alloc_space include/linux/quotaops.h:313 [inline]
       dquot_alloc_block include/linux/quotaops.h:337 [inline]
       ext4_mb_new_blocks+0xd48/0x4338 fs/ext4/mballoc.c:5738
       ext4_ext_map_blocks+0x1394/0x56f4 fs/ext4/extents.c:4340
       ext4_map_blocks+0x860/0x1778 fs/ext4/inode.c:679
       ext4_getblk+0x178/0x664 fs/ext4/inode.c:890
       ext4_bread+0x3c/0x1a8 fs/ext4/inode.c:946
       ext4_append+0x248/0x498 fs/ext4/namei.c:83
       ext4_add_entry+0x780/0xbc8 fs/ext4/namei.c:2511
       ext4_add_nondir+0x98/0x244 fs/ext4/namei.c:2845
       ext4_create+0x2a0/0x3fc fs/ext4/namei.c:2891
       lookup_open fs/namei.c:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xe18/0x26bc fs/namei.c:3788
       do_filp_open+0x194/0x384 fs/namei.c:3818
       do_sys_openat2+0x134/0x3f4 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+0x118/0x14c fs/open.c:1347
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x130 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+0x7c4/0x1778 fs/ext4/inode.c:672
       mpage_map_one_extent fs/ext4/inode.c:2434 [inline]
       mpage_map_and_submit_extent fs/ext4/inode.c:2487 [inline]
       ext4_writepages+0xdbc/0x28b4 fs/ext4/inode.c:2855
       do_writepages+0x2b0/0x504 mm/page-writeback.c:2491
       __writeback_single_inode+0x164/0x1554 fs/fs-writeback.c:1622
       writeback_sb_inodes+0x858/0x143c fs/fs-writeback.c:1913
       __writeback_inodes_wb+0x110/0x394 fs/fs-writeback.c:1984
       wb_writeback+0x428/0xfcc 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+0xb38/0xe18 fs/fs-writeback.c:2270
       process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
       worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
       kthread+0x250/0x2d8 kernel/kthread.c:376
       ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

-> #2 (jbd2_handle){++++}-{0:0}:
       wait_transaction_locked+0x180/0x234 fs/jbd2/transaction.c:177
       add_transaction_credits+0x104/0xaf0 fs/jbd2/transaction.c:-1
       start_this_handle+0x520/0x1280 fs/jbd2/transaction.c:422
       jbd2__journal_restart+0x1c8/0x674 fs/jbd2/transaction.c:815
       jbd2_journal_restart+0x30/0x40 fs/jbd2/transaction.c:827
       ocfs2_extend_trans+0x2d8/0x860 fs/ocfs2/journal.c:459
       ocfs2_insert_path+0x104/0xf0c fs/ocfs2/alloc.c:4179
       ocfs2_do_insert_extent+0x984/0xec0 fs/ocfs2/alloc.c:4334
       ocfs2_insert_extent+0xff0/0x1a04 fs/ocfs2/alloc.c:4757
       ocfs2_add_clusters_in_btree+0x590/0xf78 fs/ocfs2/alloc.c:4849
       ocfs2_add_inode_data fs/ocfs2/file.c:546 [inline]
       ocfs2_extend_allocation+0x8dc/0x16d4 fs/ocfs2/file.c:626
       ocfs2_extend_no_holes+0x1a4/0x438 fs/ocfs2/file.c:1027
       ocfs2_expand_nonsparse_inode+0x134/0x3ac fs/ocfs2/aops.c:1621
       ocfs2_write_begin_nolock+0xec8/0x3a44 fs/ocfs2/aops.c:1687
       ocfs2_write_begin+0x1b8/0x31c fs/ocfs2/aops.c:1904
       generic_perform_write+0x234/0x4f4 mm/filemap.c:3862
       __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
       ocfs2_file_write_iter+0x138c/0x1c64 fs/ocfs2/file.c:2469
       do_iter_readv_writev fs/read_write.c:-1 [inline]
       do_iter_write+0x53c/0x940 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+0xd4/0x108 fs/read_write.c:1081
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x130 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+0x374/0x6cc fs/ocfs2/journal.c:374
       ocfs2_mknod+0xd1c/0x2110 fs/ocfs2/namei.c:361
       ocfs2_create+0x19c/0x4f8 fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xe18/0x26bc fs/namei.c:3788
       do_filp_open+0x194/0x384 fs/namei.c:3818
       do_sys_openat2+0x134/0x3f4 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+0x118/0x14c fs/open.c:1347
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x130 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:3090 [inline]
       check_prevs_add kernel/locking/lockdep.c:3209 [inline]
       validate_chain kernel/locking/lockdep.c:3825 [inline]
       __lock_acquire+0x2880/0x6800 kernel/locking/lockdep.c:5049
       lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
       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/0x6cc fs/ocfs2/journal.c:372
       ocfs2_acquire_dquot+0x5c8/0xac8 fs/ocfs2/quota_global.c:848
       dqget+0x654/0xcc4 fs/quota/dquot.c:988
       __dquot_initialize+0x2fc/0xacc fs/quota/dquot.c:1517
       dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579
       ocfs2_get_init_inode+0x140/0x1b4 fs/ocfs2/namei.c:202
       ocfs2_mknod+0x7bc/0x2110 fs/ocfs2/namei.c:310
       ocfs2_create+0x19c/0x4f8 fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3490 [inline]
       open_last_lookups fs/namei.c:3558 [inline]
       path_openat+0xe18/0x26bc fs/namei.c:3788
       do_filp_open+0x194/0x384 fs/namei.c:3818
       do_sys_openat2+0x134/0x3f4 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+0x118/0x14c fs/open.c:1347
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x130 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.0.139/4991:
 #0: ffff0000da75e460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:402
 #1: ffff0000d9715108 (&type->i_mutex_dir_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #1: ffff0000d9715108 (&type->i_mutex_dir_key#12){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline]
 #1: ffff0000d9715108 (&type->i_mutex_dir_key#12){+.+.}-{3:3}, at: path_openat+0x5f4/0x26bc fs/namei.c:3788
 #2: ffff0000e27089c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #2: ffff0000e27089c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x10c/0x3c80 fs/ocfs2/suballoc.c:782
 #3: ffff0000f65400a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x25c/0xac8 fs/ocfs2/quota_global.c:811
 #4: ffff0000e270c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #4: ffff0000e270c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x190/0x238 fs/ocfs2/quota_global.c:313
 #5: ffff0000e270bf60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1ac/0x238 fs/ocfs2/quota_global.c:314

stack backtrace:
CPU: 1 PID: 4991 Comm: syz.0.139 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 dump_backtrace+0x1c0/0x1ec 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:3090 [inline]
 check_prevs_add kernel/locking/lockdep.c:3209 [inline]
 validate_chain kernel/locking/lockdep.c:3825 [inline]
 __lock_acquire+0x2880/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 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/0x6cc fs/ocfs2/journal.c:372
 ocfs2_acquire_dquot+0x5c8/0xac8 fs/ocfs2/quota_global.c:848
 dqget+0x654/0xcc4 fs/quota/dquot.c:988
 __dquot_initialize+0x2fc/0xacc fs/quota/dquot.c:1517
 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1579
 ocfs2_get_init_inode+0x140/0x1b4 fs/ocfs2/namei.c:202
 ocfs2_mknod+0x7bc/0x2110 fs/ocfs2/namei.c:310
 ocfs2_create+0x19c/0x4f8 fs/ocfs2/namei.c:674
 lookup_open fs/namei.c:3490 [inline]
 open_last_lookups fs/namei.c:3558 [inline]
 path_openat+0xe18/0x26bc fs/namei.c:3788
 do_filp_open+0x194/0x384 fs/namei.c:3818
 do_sys_openat2+0x134/0x3f4 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+0x118/0x14c fs/open.c:1347
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 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