======================================================
WARNING: possible circular locking dependency detected
5.15.182-syzkaller #0 Not tainted
------------------------------------------------------
syz.2.139/4711 is trying to acquire lock:
ffff0000c53109c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
ffff0000c53109c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0xf8/0x260c fs/ocfs2/localalloc.c:635

but task is already holding lock:
ffff0000c531cda0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1a8/0x22c fs/ocfs2/quota_global.c:314

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #7 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}:
       down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
       ocfs2_lock_global_qf+0x1a8/0x22c fs/ocfs2/quota_global.c:314
       ocfs2_acquire_dquot+0x244/0xa2c fs/ocfs2/quota_global.c:816
       dqget+0x658/0xcf4 fs/quota/dquot.c:988
       ocfs2_setattr+0xa7c/0x16c4 fs/ocfs2/file.c:1236
       notify_change+0xa08/0xcd8 fs/attr.c:505
       chown_common+0x42c/0x5a0 fs/open.c:680
       vfs_fchown fs/open.c:748 [inline]
       ksys_fchown+0xe0/0x158 fs/open.c:759
       __do_sys_fchown fs/open.c:767 [inline]
       __se_sys_fchown fs/open.c:765 [inline]
       __arm64_sys_fchown+0x7c/0x94 fs/open.c:765
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

-> #6 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}:
       down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
       inode_lock include/linux/fs.h:787 [inline]
       ocfs2_lock_global_qf+0x18c/0x22c fs/ocfs2/quota_global.c:313
       ocfs2_acquire_dquot+0x244/0xa2c fs/ocfs2/quota_global.c:816
       dqget+0x658/0xcf4 fs/quota/dquot.c:988
       ocfs2_setattr+0xa7c/0x16c4 fs/ocfs2/file.c:1236
       notify_change+0xa08/0xcd8 fs/attr.c:505
       chown_common+0x42c/0x5a0 fs/open.c:680
       vfs_fchown fs/open.c:748 [inline]
       ksys_fchown+0xe0/0x158 fs/open.c:759
       __do_sys_fchown fs/open.c:767 [inline]
       __se_sys_fchown fs/open.c:765 [inline]
       __arm64_sys_fchown+0x7c/0x94 fs/open.c:765
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

-> #5 (&dquot->dq_lock){+.+.}-{3:3}:
       __mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596
       __mutex_lock kernel/locking/mutex.c:729 [inline]
       mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743
       dquot_commit+0x50/0x1c4 fs/quota/dquot.c:507
       ext4_write_dquot+0x1b4/0x31c fs/ext4/super.c:6180
       ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6257
       mark_dquot_dirty fs/quota/dquot.c:372 [inline]
       mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412
       __dquot_alloc_space+0x560/0xd0c fs/quota/dquot.c:1752
       dquot_alloc_space_nodirty include/linux/quotaops.h:297 [inline]
       dquot_alloc_space include/linux/quotaops.h:310 [inline]
       dquot_alloc_block include/linux/quotaops.h:334 [inline]
       ext4_mb_new_blocks+0xd30/0x4024 fs/ext4/mballoc.c:5739
       ext4_ext_map_blocks+0xf70/0x5628 fs/ext4/extents.c:4339
       ext4_map_blocks+0x7b8/0x167c fs/ext4/inode.c:673
       _ext4_get_block+0x190/0x4ec fs/ext4/inode.c:816
       ext4_get_block+0x4c/0x60 fs/ext4/inode.c:833
       ext4_block_write_begin+0x528/0x1110 fs/ext4/inode.c:1101
       ext4_write_begin+0x5d0/0xdbc fs/ext4/ext4_jbd2.h:-1
       ext4_da_write_begin+0x380/0x83c fs/ext4/inode.c:2975
       generic_perform_write+0x204/0x480 mm/filemap.c:3785
       ext4_buffered_write_iter+0x408/0x538 fs/ext4/file.c:268
       ext4_file_write_iter+0x698/0x14cc include/linux/fs.h:-1
       call_write_iter include/linux/fs.h:2172 [inline]
       new_sync_write fs/read_write.c:507 [inline]
       vfs_write+0x7c8/0xa2c fs/read_write.c:594
       ksys_write+0x120/0x210 fs/read_write.c:647
       __do_sys_write fs/read_write.c:659 [inline]
       __se_sys_write fs/read_write.c:656 [inline]
       __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

-> #4 (&ei->i_data_sem){++++}-{3:3}:
       down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
       ext4_truncate+0x7bc/0xf94 fs/ext4/inode.c:4245
       ext4_setattr+0xc20/0x142c fs/ext4/inode.c:5582
       notify_change+0xa08/0xcd8 fs/attr.c:505
       do_truncate+0x178/0x1f0 fs/open.c:65
       do_sys_ftruncate+0x284/0x31c fs/open.c:193
       __do_sys_ftruncate fs/open.c:204 [inline]
       __se_sys_ftruncate fs/open.c:202 [inline]
       __arm64_sys_ftruncate+0x60/0x74 fs/open.c:202
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

-> #3 (jbd2_handle){++++}-{0:0}:
       start_this_handle+0xef4/0x11a4 fs/jbd2/transaction.c:464
       jbd2__journal_start+0x28c/0x744 fs/jbd2/transaction.c:521
       jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:560
       ocfs2_start_trans+0x43c/0x794 fs/ocfs2/journal.c:354
       ocfs2_mknod+0xc60/0x1e88 fs/ocfs2/namei.c:361
       ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3462 [inline]
       open_last_lookups fs/namei.c:3532 [inline]
       path_openat+0x1144/0x26e4 fs/namei.c:3739
       do_filp_open+0x164/0x330 fs/namei.c:3769
       do_sys_openat2+0x128/0x3d8 fs/open.c:1253
       do_sys_open fs/open.c:1269 [inline]
       __do_sys_openat fs/open.c:1285 [inline]
       __se_sys_openat fs/open.c:1280 [inline]
       __arm64_sys_openat+0x120/0x154 fs/open.c:1280
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

-> #2 (&journal->j_trans_barrier){.+.+}-{3:3}:
       down_read+0xc0/0x390 kernel/locking/rwsem.c:1498
       ocfs2_start_trans+0x430/0x794 fs/ocfs2/journal.c:352
       ocfs2_mknod+0xc60/0x1e88 fs/ocfs2/namei.c:361
       ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3462 [inline]
       open_last_lookups fs/namei.c:3532 [inline]
       path_openat+0x1144/0x26e4 fs/namei.c:3739
       do_filp_open+0x164/0x330 fs/namei.c:3769
       do_sys_openat2+0x128/0x3d8 fs/open.c:1253
       do_sys_open fs/open.c:1269 [inline]
       __do_sys_openat fs/open.c:1285 [inline]
       __se_sys_openat fs/open.c:1280 [inline]
       __arm64_sys_openat+0x120/0x154 fs/open.c:1280
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

-> #1 (sb_internal#3){.+.+}-{0:0}:
       percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
       __sb_start_write include/linux/fs.h:1811 [inline]
       sb_start_intwrite include/linux/fs.h:1928 [inline]
       ocfs2_start_trans+0x2c4/0x794 fs/ocfs2/journal.c:350
       ocfs2_mknod+0xc60/0x1e88 fs/ocfs2/namei.c:361
       ocfs2_create+0x180/0x468 fs/ocfs2/namei.c:674
       lookup_open fs/namei.c:3462 [inline]
       open_last_lookups fs/namei.c:3532 [inline]
       path_openat+0x1144/0x26e4 fs/namei.c:3739
       do_filp_open+0x164/0x330 fs/namei.c:3769
       do_sys_openat2+0x128/0x3d8 fs/open.c:1253
       do_sys_open fs/open.c:1269 [inline]
       __do_sys_openat fs/open.c:1285 [inline]
       __se_sys_openat fs/open.c:1280 [inline]
       __arm64_sys_openat+0x120/0x154 fs/open.c:1280
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3053 [inline]
       check_prevs_add kernel/locking/lockdep.c:3172 [inline]
       validate_chain kernel/locking/lockdep.c:3788 [inline]
       __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012
       lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
       down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
       inode_lock include/linux/fs.h:787 [inline]
       ocfs2_reserve_local_alloc_bits+0xf8/0x260c fs/ocfs2/localalloc.c:635
       ocfs2_reserve_clusters_with_limit+0x198/0x9e0 fs/ocfs2/suballoc.c:1162
       ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline]
       ocfs2_lock_allocators+0x27c/0x518 fs/ocfs2/suballoc.c:2669
       ocfs2_extend_allocation+0x328/0x1504 fs/ocfs2/file.c:588
       ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1030
       ocfs2_acquire_dquot+0x530/0xa2c fs/ocfs2/quota_global.c:841
       dqget+0x658/0xcf4 fs/quota/dquot.c:988
       ocfs2_setattr+0xa7c/0x16c4 fs/ocfs2/file.c:1236
       notify_change+0xa08/0xcd8 fs/attr.c:505
       chown_common+0x42c/0x5a0 fs/open.c:680
       vfs_fchown fs/open.c:748 [inline]
       ksys_fchown+0xe0/0x158 fs/open.c:759
       __do_sys_fchown fs/open.c:767 [inline]
       __se_sys_fchown fs/open.c:765 [inline]
       __arm64_sys_fchown+0x7c/0x94 fs/open.c:765
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
       el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
       el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
       el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> &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(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);

 *** DEADLOCK ***

5 locks held by syz.2.139/4711:
 #0: ffff0000ce8ee460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:421
 #1: ffff0000dede1808 (&type->i_mutex_dir_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff0000dede1808 (&type->i_mutex_dir_key#15){+.+.}-{3:3}, at: chown_common+0x380/0x5a0 fs/open.c:674
 #2: ffff0000f0c100a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x238/0xa2c fs/ocfs2/quota_global.c:811
 #3: ffff0000c531d108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #3: ffff0000c531d108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x18c/0x22c fs/ocfs2/quota_global.c:313
 #4: ffff0000c531cda0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1a8/0x22c fs/ocfs2/quota_global.c:314

stack backtrace:
CPU: 1 PID: 4711 Comm: syz.2.139 Not tainted 5.15.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011
 check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2133
 check_prev_add kernel/locking/lockdep.c:3053 [inline]
 check_prevs_add kernel/locking/lockdep.c:3172 [inline]
 validate_chain kernel/locking/lockdep.c:3788 [inline]
 __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012
 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
 down_write+0xbc/0x12c kernel/locking/rwsem.c:1551
 inode_lock include/linux/fs.h:787 [inline]
 ocfs2_reserve_local_alloc_bits+0xf8/0x260c fs/ocfs2/localalloc.c:635
 ocfs2_reserve_clusters_with_limit+0x198/0x9e0 fs/ocfs2/suballoc.c:1162
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline]
 ocfs2_lock_allocators+0x27c/0x518 fs/ocfs2/suballoc.c:2669
 ocfs2_extend_allocation+0x328/0x1504 fs/ocfs2/file.c:588
 ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1030
 ocfs2_acquire_dquot+0x530/0xa2c fs/ocfs2/quota_global.c:841
 dqget+0x658/0xcf4 fs/quota/dquot.c:988
 ocfs2_setattr+0xa7c/0x16c4 fs/ocfs2/file.c:1236
 notify_change+0xa08/0xcd8 fs/attr.c:505
 chown_common+0x42c/0x5a0 fs/open.c:680
 vfs_fchown fs/open.c:748 [inline]
 ksys_fchown+0xe0/0x158 fs/open.c:759
 __do_sys_fchown fs/open.c:767 [inline]
 __se_sys_fchown fs/open.c:765 [inline]
 __arm64_sys_fchown+0x7c/0x94 fs/open.c:765
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584