ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 5.15.185-syzkaller #0 Not tainted ------------------------------------------------------ syz.3.541/6816 is trying to acquire lock: ffff0000f249c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] ffff0000f249c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0xf8/0x260c fs/ocfs2/localalloc.c:635 but task is already holding lock: ffff0000e95d8660 (&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: -> #8 (&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 dquot_set_dqblk+0x40/0xf24 fs/quota/dquot.c:2826 quota_setquota+0x428/0x4b8 fs/quota/quota.c:309 do_quotactl+0x65c/0x738 fs/quota/quota.c:801 __do_sys_quotactl fs/quota/quota.c:959 [inline] __se_sys_quotactl fs/quota/quota.c:915 [inline] __arm64_sys_quotactl+0x2ac/0x734 fs/quota/quota.c:915 __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 -> #7 (&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 dquot_set_dqblk+0x40/0xf24 fs/quota/dquot.c:2826 quota_setquota+0x428/0x4b8 fs/quota/quota.c:309 do_quotactl+0x65c/0x738 fs/quota/quota.c:801 __do_sys_quotactl fs/quota/quota.c:959 [inline] __se_sys_quotactl fs/quota/quota.c:915 [inline] __arm64_sys_quotactl+0x2ac/0x734 fs/quota/quota.c:915 __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 (&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_unwritten+0x38/0x4c fs/ext4/inode.c:847 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 -> #5 (&ei->i_data_sem){++++}-{3:3}: down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 ext4_map_blocks+0x71c/0x167c fs/ext4/inode.c:666 mpage_map_one_extent fs/ext4/inode.c:2408 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2461 [inline] ext4_writepages+0xf00/0x2c14 fs/ext4/inode.c:2829 do_writepages+0x36c/0x578 mm/page-writeback.c:2386 __writeback_single_inode+0x148/0x11f0 fs/fs-writeback.c:1647 writeback_sb_inodes+0x7fc/0x1378 fs/fs-writeback.c:1930 __writeback_inodes_wb+0x110/0x394 fs/fs-writeback.c:2001 wb_writeback+0x3ec/0xe44 fs/fs-writeback.c:2106 wb_check_background_flush fs/fs-writeback.c:2172 [inline] wb_do_writeback fs/fs-writeback.c:2260 [inline] wb_workfn+0xa7c/0xdd8 fs/fs-writeback.c:2288 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457 kthread+0x374/0x454 kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 -> #4 (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:376 ocfs2_modify_bh+0xe4/0x450 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x102c/0x131c fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x6c4/0xa24 fs/quota/dquot.c:2463 dquot_load_quota_inode+0x274/0x4e4 fs/quota/dquot.c:2500 ocfs2_enable_quotas+0x17c/0x3b4 fs/ocfs2/super.c:927 ocfs2_fill_super+0x2e74/0x4074 fs/ocfs2/super.c:1140 mount_bdev+0x264/0x358 fs/super.c:1400 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __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 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 ocfs2_start_trans+0x430/0x794 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe4/0x450 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x102c/0x131c fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x6c4/0xa24 fs/quota/dquot.c:2463 dquot_load_quota_inode+0x274/0x4e4 fs/quota/dquot.c:2500 ocfs2_enable_quotas+0x17c/0x3b4 fs/ocfs2/super.c:927 ocfs2_fill_super+0x2e74/0x4074 fs/ocfs2/super.c:1140 mount_bdev+0x264/0x358 fs/super.c:1400 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1530 do_new_mount+0x228/0x810 fs/namespace.c:3010 path_mount+0x5b4/0x1000 fs/namespace.c:3340 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount fs/namespace.c:3538 [inline] __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3538 __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 (sb_internal#5){.+.+}-{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:372 ocfs2_shutdown_local_alloc+0x1ac/0x7e4 fs/ocfs2/localalloc.c:416 ocfs2_dismount_volume+0x1d4/0x8b4 fs/ocfs2/super.c:1885 ocfs2_put_super+0xec/0x308 fs/ocfs2/super.c:1610 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 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 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}: down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_reserve_suballoc_bits+0x12c/0x3a68 fs/ocfs2/suballoc.c:782 ocfs2_reserve_cluster_bitmap_bits+0xcc/0x1c8 fs/ocfs2/suballoc.c:1128 ocfs2_local_alloc_reserve_for_window fs/ocfs2/localalloc.c:1112 [inline] ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1248 [inline] ocfs2_reserve_local_alloc_bits+0x708/0x260c fs/ocfs2/localalloc.c:668 ocfs2_reserve_clusters_with_limit+0x198/0x9e0 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters+0x3c/0x50 fs/ocfs2/suballoc.c:1223 ocfs2_mknod+0xc10/0x1e88 fs/ocfs2/namei.c:354 ocfs2_mkdir+0x180/0x468 fs/ocfs2/namei.c:657 vfs_mkdir+0x314/0x4d4 fs/namei.c:4065 do_mkdirat+0x1bc/0x508 fs/namei.c:4090 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4103 __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]#6){+.+.}-{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 dquot_set_dqblk+0x40/0xf24 fs/quota/dquot.c:2826 quota_setquota+0x428/0x4b8 fs/quota/quota.c:309 do_quotactl+0x65c/0x738 fs/quota/quota.c:801 __do_sys_quotactl fs/quota/quota.c:959 [inline] __se_sys_quotactl fs/quota/quota.c:915 [inline] __arm64_sys_quotactl+0x2ac/0x734 fs/quota/quota.c:915 __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]#6 --> &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]#6); *** DEADLOCK *** 4 locks held by syz.3.541/6816: #0: ffff0000f16180e0 (&type->s_umount_key#99){++++}-{3:3}, at: user_get_super+0x118/0x234 fs/super.c:850 #1: ffff0000dcafc0a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x238/0xa2c fs/ocfs2/quota_global.c:811 #2: ffff0000e95d89c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #2: ffff0000e95d89c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x18c/0x22c fs/ocfs2/quota_global.c:313 #3: ffff0000e95d8660 (&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: 6816 Comm: syz.3.541 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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 dquot_set_dqblk+0x40/0xf24 fs/quota/dquot.c:2826 quota_setquota+0x428/0x4b8 fs/quota/quota.c:309 do_quotactl+0x65c/0x738 fs/quota/quota.c:801 __do_sys_quotactl fs/quota/quota.c:959 [inline] __se_sys_quotactl fs/quota/quota.c:915 [inline] __arm64_sys_quotactl+0x2ac/0x734 fs/quota/quota.c:915 __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 ocfs2: Unmounting device (7,3) on (node local)