(syz.0.24,6998,1):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0x98842a5e, computed 0xe74db1cd. Applying ECC. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.24/6998 is trying to acquire lock: ffff0000d929c610 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_extend_allocation+0x5d4/0x14cc fs/ocfs2/file.c:597 but task is already holding lock: ffff0000f53bd100 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] ffff0000f53bd100 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x12c/0x3b9c fs/ocfs2/suballoc.c:788 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #7 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:980 [inline] ocfs2_reserve_suballoc_bits+0x12c/0x3b9c fs/ocfs2/suballoc.c:788 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1134 [inline] ocfs2_reserve_clusters_with_limit+0x290/0x9e0 fs/ocfs2/suballoc.c:1179 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1229 [inline] ocfs2_lock_allocators+0x27c/0x518 fs/ocfs2/suballoc.c:2772 ocfs2_extend_allocation+0x328/0x14cc fs/ocfs2/file.c:589 ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x530/0xa10 fs/ocfs2/quota_global.c:853 dqget+0x654/0xccc fs/quota/dquot.c:980 ocfs2_setattr+0xb30/0x17a0 fs/ocfs2/file.c:1233 notify_change+0xa0c/0xcb8 fs/attr.c:546 chown_common+0x374/0x4dc fs/open.c:791 vfs_fchown fs/open.c:859 [inline] ksys_fchown+0xe0/0x158 fs/open.c:871 __do_sys_fchown fs/open.c:876 [inline] __se_sys_fchown fs/open.c:874 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:874 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #6 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 ocfs2_lock_global_qf+0x1a8/0x22c fs/ocfs2/quota_global.c:314 ocfs2_acquire_dquot+0x258/0xa10 fs/ocfs2/quota_global.c:828 dqget+0x654/0xccc fs/quota/dquot.c:980 ocfs2_setattr+0xb30/0x17a0 fs/ocfs2/file.c:1233 notify_change+0xa0c/0xcb8 fs/attr.c:546 chown_common+0x374/0x4dc fs/open.c:791 vfs_fchown fs/open.c:859 [inline] ksys_fchown+0xe0/0x158 fs/open.c:871 __do_sys_fchown fs/open.c:876 [inline] __se_sys_fchown fs/open.c:874 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:874 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #5 (&ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:980 [inline] ocfs2_lock_global_qf+0x18c/0x22c fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x258/0xa10 fs/ocfs2/quota_global.c:828 dqget+0x654/0xccc fs/quota/dquot.c:980 ocfs2_setattr+0xb30/0x17a0 fs/ocfs2/file.c:1233 notify_change+0xa0c/0xcb8 fs/attr.c:546 chown_common+0x374/0x4dc fs/open.c:791 vfs_fchown fs/open.c:859 [inline] ksys_fchown+0xe0/0x158 fs/open.c:871 __do_sys_fchown fs/open.c:876 [inline] __se_sys_fchown fs/open.c:874 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:874 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #4 (&dquot->dq_lock){+.+.}-{4:4}: __mutex_lock_common+0x1d8/0x2430 kernel/locking/mutex.c:598 __mutex_lock kernel/locking/mutex.c:760 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812 wait_on_dquot fs/quota/dquot.c:357 [inline] dqget+0x5e4/0xccc fs/quota/dquot.c:975 dquot_transfer+0x238/0x560 fs/quota/dquot.c:2143 ext4_setattr+0x738/0x1810 fs/ext4/inode.c:5881 notify_change+0xa0c/0xcb8 fs/attr.c:546 chown_common+0x374/0x4dc fs/open.c:791 vfs_fchown fs/open.c:859 [inline] ksys_fchown+0xe0/0x158 fs/open.c:871 __do_sys_fchown fs/open.c:876 [inline] __se_sys_fchown fs/open.c:874 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:874 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #3 (&ei->xattr_sem){.+.+}-{4:4}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537 ext4_setattr+0x728/0x1810 fs/ext4/inode.c:5880 notify_change+0xa0c/0xcb8 fs/attr.c:546 chown_common+0x374/0x4dc fs/open.c:791 do_fchownat+0x154/0x260 fs/open.c:822 __do_sys_fchownat fs/open.c:837 [inline] __se_sys_fchownat fs/open.c:834 [inline] __arm64_sys_fchownat+0xb8/0xd4 fs/open.c:834 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0xe74/0x10dc fs/jbd2/transaction.c:444 jbd2__journal_start+0x288/0x51c fs/jbd2/transaction.c:501 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:540 ocfs2_start_trans+0x368/0x6b0 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe4/0x43c fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x104c/0x1364 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x6bc/0xa90 fs/quota/dquot.c:2462 dquot_load_quota_inode+0x274/0x4e4 fs/quota/dquot.c:2499 ocfs2_enable_quotas+0x17c/0x3b4 fs/ocfs2/super.c:930 ocfs2_fill_super+0x4004/0x532c fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x360/0x414 fs/super.c:1691 get_tree_bdev+0x2c/0x3c fs/super.c:1714 ocfs2_get_tree+0x28/0x38 fs/ocfs2/super.c:1184 vfs_get_tree+0x90/0x28c fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount+0x284/0x944 fs/namespace.c:3727 path_mount+0x5b4/0xdfc fs/namespace.c:4037 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount fs/namespace.c:4215 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4215 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x35c/0x6b0 fs/ocfs2/journal.c:372 ocfs2_modify_bh+0xe4/0x43c fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x104c/0x1364 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x6bc/0xa90 fs/quota/dquot.c:2462 dquot_load_quota_inode+0x274/0x4e4 fs/quota/dquot.c:2499 ocfs2_enable_quotas+0x17c/0x3b4 fs/ocfs2/super.c:930 ocfs2_fill_super+0x4004/0x532c fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x360/0x414 fs/super.c:1691 get_tree_bdev+0x2c/0x3c fs/super.c:1714 ocfs2_get_tree+0x28/0x38 fs/ocfs2/super.c:1184 vfs_get_tree+0x90/0x28c fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount+0x284/0x944 fs/namespace.c:3727 path_mount+0x5b4/0xdfc fs/namespace.c:4037 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount fs/namespace.c:4215 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4215 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #0 (sb_internal#2){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1916 [inline] sb_start_intwrite include/linux/fs.h:2099 [inline] ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_extend_allocation+0x5d4/0x14cc fs/ocfs2/file.c:597 ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x530/0xa10 fs/ocfs2/quota_global.c:853 dqget+0x654/0xccc fs/quota/dquot.c:980 ocfs2_setattr+0xb30/0x17a0 fs/ocfs2/file.c:1233 notify_change+0xa0c/0xcb8 fs/attr.c:546 chown_common+0x374/0x4dc fs/open.c:791 vfs_fchown fs/open.c:859 [inline] ksys_fchown+0xe0/0x158 fs/open.c:871 __do_sys_fchown fs/open.c:876 [inline] __se_sys_fchown fs/open.c:874 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:874 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 other info that might help us debug this: Chain exists of: sb_internal#2 --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]); rlock(sb_internal#2); *** DEADLOCK *** 6 locks held by syz.0.24/6998: #0: ffff0000d929c420 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:552 #1: ffff0000f53b89c0 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:985 [inline] #1: ffff0000f53b89c0 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: chown_common+0x290/0x4dc fs/open.c:779 #2: ffff0000f530a0a8 (&dquot->dq_lock){+.+.}-{4:4}, at: ocfs2_acquire_dquot+0x24c/0xa10 fs/ocfs2/quota_global.c:823 #3: ffff0000f53bdf40 (&ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #3: ffff0000f53bdf40 (&ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_lock_global_qf+0x18c/0x22c fs/ocfs2/quota_global.c:313 #4: ffff0000f53bdbe0 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}, at: ocfs2_lock_global_qf+0x1a8/0x22c fs/ocfs2/quota_global.c:314 #5: ffff0000f53bd100 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #5: ffff0000f53bd100 (&ocfs2_sysfile_lock_key[GLOBAL_BITMAP_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x12c/0x3b9c fs/ocfs2/suballoc.c:788 stack backtrace: CPU: 0 UID: 0 PID: 6998 Comm: syz.0.24 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2043 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1916 [inline] sb_start_intwrite include/linux/fs.h:2099 [inline] ocfs2_start_trans+0x1f4/0x6b0 fs/ocfs2/journal.c:370 ocfs2_extend_allocation+0x5d4/0x14cc fs/ocfs2/file.c:597 ocfs2_extend_no_holes+0x1a8/0x424 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x530/0xa10 fs/ocfs2/quota_global.c:853 dqget+0x654/0xccc fs/quota/dquot.c:980 ocfs2_setattr+0xb30/0x17a0 fs/ocfs2/file.c:1233 notify_change+0xa0c/0xcb8 fs/attr.c:546 chown_common+0x374/0x4dc fs/open.c:791 vfs_fchown fs/open.c:859 [inline] ksys_fchown+0xe0/0x158 fs/open.c:871 __do_sys_fchown fs/open.c:876 [inline] __se_sys_fchown fs/open.c:874 [inline] __arm64_sys_fchown+0x7c/0x94 fs/open.c:874 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 (syz.0.24,6998,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xdf8356d3, computed 0xb8c23ae4. Applying ECC. (syz.0.24,6998,0):ocfs2_block_check_validate:416 ERROR: Fixed CRC32 failed: stored: 0xdf8356d3, computed 0x2acb7e3c (syz.0.24,6998,0):ocfs2_read_quota_phys_block:160 ERROR: status = -5 (syz.0.24,6998,0):ocfs2_quota_read:201 ERROR: status = -5 Quota error (device loop0): qtree_write_dquot: Error -5 occurred while creating quota (syz.0.24,6998,0):ocfs2_acquire_dquot:890 ERROR: status = -5