(syz.3.30,4553,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0x98842a5e, computed 0xe74db1cd. Applying ECC. ====================================================== WARNING: possible circular locking dependency detected 6.1.148-syzkaller #0 Not tainted ------------------------------------------------------ syz.3.30/4553 is trying to acquire lock: ffff0000c4a90650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_extend_allocation+0x5d4/0x15ec fs/ocfs2/file.c:593 but task is already holding lock: ffff0000e9cad108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] ffff0000e9cad108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x12c/0x3cd4 fs/ocfs2/suballoc.c:782 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #7 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_reserve_suballoc_bits+0x12c/0x3cd4 fs/ocfs2/suballoc.c:782 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1128 [inline] ocfs2_reserve_clusters_with_limit+0x290/0x9e0 fs/ocfs2/suballoc.c:1173 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x27c/0x518 fs/ocfs2/suballoc.c:2669 ocfs2_extend_allocation+0x328/0x15ec fs/ocfs2/file.c:585 ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x550/0xac4 fs/ocfs2/quota_global.c:841 dqget+0x654/0xccc fs/quota/dquot.c:988 ocfs2_setattr+0xc20/0x18d4 fs/ocfs2/file.c:1233 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xe0/0x158 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 -> #6 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1573 ocfs2_lock_global_qf+0x1a8/0x22c fs/ocfs2/quota_global.c:314 ocfs2_acquire_dquot+0x268/0xac4 fs/ocfs2/quota_global.c:816 dqget+0x654/0xccc fs/quota/dquot.c:988 ocfs2_setattr+0xc20/0x18d4 fs/ocfs2/file.c:1233 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xe0/0x158 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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]#2){+.+.}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_lock_global_qf+0x18c/0x22c fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x268/0xac4 fs/ocfs2/quota_global.c:816 dqget+0x654/0xccc fs/quota/dquot.c:988 ocfs2_setattr+0xc20/0x18d4 fs/ocfs2/file.c:1233 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xe0/0x158 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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+0x190/0x1f38 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 wait_on_dquot fs/quota/dquot.c:356 [inline] dqget+0x5e4/0xccc fs/quota/dquot.c:983 dquot_transfer+0x30c/0x6f0 fs/quota/dquot.c:2150 ext4_setattr+0x7d4/0x150c fs/ext4/inode.c:5502 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xe0/0x158 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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->xattr_sem){.+.+}-{3:3}: down_read+0x64/0x304 kernel/locking/rwsem.c:1520 ext4_setattr+0x7c4/0x150c fs/ext4/inode.c:5501 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 do_fchownat+0x158/0x268 fs/open.c:767 __do_sys_fchownat fs/open.c:782 [inline] __se_sys_fchownat fs/open.c:779 [inline] __arm64_sys_fchownat+0xb8/0xd4 fs/open.c:779 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 (jbd2_handle){++++}-{0:0}: start_this_handle+0xfe0/0x122c fs/jbd2/transaction.c:463 jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:520 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:559 ocfs2_start_trans+0x380/0x6c4 fs/ocfs2/journal.c:376 ocfs2_modify_bh+0xe4/0x43c 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:2470 dquot_load_quota_inode+0x274/0x4e4 fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x17c/0x3b4 fs/ocfs2/super.c:926 ocfs2_fill_super+0x3060/0x3e98 fs/ocfs2/super.c:1139 mount_bdev+0x264/0x358 fs/super.c:1443 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3063 path_mount+0x5b4/0xe78 fs/namespace.c:3393 do_mount fs/namespace.c:3406 [inline] __do_sys_mount fs/namespace.c:3614 [inline] __se_sys_mount fs/namespace.c:3591 [inline] __arm64_sys_mount+0x49c/0x584 fs/namespace.c:3591 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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+0x64/0x304 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x374/0x6c4 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe4/0x43c 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:2470 dquot_load_quota_inode+0x274/0x4e4 fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x17c/0x3b4 fs/ocfs2/super.c:926 ocfs2_fill_super+0x3060/0x3e98 fs/ocfs2/super.c:1139 mount_bdev+0x264/0x358 fs/super.c:1443 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3063 path_mount+0x5b4/0xe78 fs/namespace.c:3393 do_mount fs/namespace.c:3406 [inline] __do_sys_mount fs/namespace.c:3614 [inline] __se_sys_mount fs/namespace.c:3591 [inline] __arm64_sys_mount+0x49c/0x584 fs/namespace.c:3591 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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#2){.+.+}-{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+0x293c/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 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/0x6c4 fs/ocfs2/journal.c:372 ocfs2_extend_allocation+0x5d4/0x15ec fs/ocfs2/file.c:593 ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x550/0xac4 fs/ocfs2/quota_global.c:841 dqget+0x654/0xccc fs/quota/dquot.c:988 ocfs2_setattr+0xc20/0x18d4 fs/ocfs2/file.c:1233 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xe0/0x158 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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#2 --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3); lock(sb_internal#2); *** DEADLOCK *** 6 locks held by syz.3.30/4553: #0: ffff0000c4a90460 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:437 #1: ffff0000e9ca89c8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff0000e9ca89c8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: chown_common+0x2ac/0x574 fs/open.c:726 #2: ffff0000e2fd60a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x25c/0xac4 fs/ocfs2/quota_global.c:811 #3: ffff0000e9cadf48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #3: ffff0000e9cadf48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x18c/0x22c fs/ocfs2/quota_global.c:313 #4: ffff0000e9cadbe0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1a8/0x22c fs/ocfs2/quota_global.c:314 #5: ffff0000e9cad108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #5: ffff0000e9cad108 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x12c/0x3cd4 fs/ocfs2/suballoc.c:782 stack backtrace: CPU: 0 PID: 4553 Comm: syz.3.30 Not tainted 6.1.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: dump_backtrace+0x1c8/0x1f4 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+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:2048 check_noncircular+0x240/0x2d4 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+0x293c/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 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/0x6c4 fs/ocfs2/journal.c:372 ocfs2_extend_allocation+0x5d4/0x15ec fs/ocfs2/file.c:593 ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x550/0xac4 fs/ocfs2/quota_global.c:841 dqget+0x654/0xccc fs/quota/dquot.c:988 ocfs2_setattr+0xc20/0x18d4 fs/ocfs2/file.c:1233 notify_change+0xb0c/0xdcc fs/attr.c:499 chown_common+0x414/0x574 fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xe0/0x158 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 (syz.3.30,4553,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xdf8356d3, computed 0xb8c23ae4. Applying ECC. (syz.3.30,4553,0):ocfs2_block_check_validate:416 ERROR: Fixed CRC32 failed: stored: 0xdf8356d3, computed 0x2acb7e3c (syz.3.30,4553,0):ocfs2_read_quota_phys_block:160 ERROR: status = -5 (syz.3.30,4553,0):ocfs2_quota_read:201 ERROR: status = -5 Quota error (device loop3): qtree_write_dquot: Error -5 occurred while creating quota (syz.3.30,4553,0):ocfs2_acquire_dquot:878 ERROR: status = -5