(syz.0.54,5033,1):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.0.54/5033 is trying to acquire lock: ffff0000def8e628 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_extend_allocation+0x3a0/0xacc fs/ocfs2/file.c:593 but task is already holding lock: ffff0000cbcf3308 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] ffff0000cbcf3308 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x74/0x1cd8 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+0x44/0x70 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_reserve_suballoc_bits+0x74/0x1cd8 fs/ocfs2/suballoc.c:782 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1128 [inline] ocfs2_reserve_clusters_with_limit+0x18c/0x6b0 fs/ocfs2/suballoc.c:1173 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x178/0x3cc fs/ocfs2/suballoc.c:2669 ocfs2_extend_allocation+0x1c0/0xacc fs/ocfs2/file.c:585 ocfs2_extend_no_holes+0xb8/0x264 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x298/0x4e8 fs/ocfs2/quota_global.c:841 dqget+0x3b8/0x628 fs/quota/dquot.c:988 ocfs2_setattr+0x7a4/0xe14 fs/ocfs2/file.c:1233 notify_change+0x6d0/0x750 fs/attr.c:499 chown_common+0x2b0/0x39c fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xb4/0x110 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x28/0x3c fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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+0x44/0x70 kernel/locking/rwsem.c:1573 ocfs2_lock_global_qf+0xdc/0x124 fs/ocfs2/quota_global.c:314 ocfs2_acquire_dquot+0xd4/0x4e8 fs/ocfs2/quota_global.c:816 dqget+0x3b8/0x628 fs/quota/dquot.c:988 ocfs2_setattr+0x7a4/0xe14 fs/ocfs2/file.c:1233 notify_change+0x6d0/0x750 fs/attr.c:499 chown_common+0x2b0/0x39c fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xb4/0x110 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x28/0x3c fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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+0x44/0x70 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_lock_global_qf+0xd0/0x124 fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0xd4/0x4e8 fs/ocfs2/quota_global.c:816 dqget+0x3b8/0x628 fs/quota/dquot.c:988 ocfs2_setattr+0x7a4/0xe14 fs/ocfs2/file.c:1233 notify_change+0x6d0/0x750 fs/attr.c:499 chown_common+0x2b0/0x39c fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xb4/0x110 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x28/0x3c fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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 kernel/locking/mutex.c:603 [inline] __mutex_lock+0x90/0xc68 kernel/locking/mutex.c:747 mutex_lock_nested+0x30/0x3c kernel/locking/mutex.c:799 wait_on_dquot fs/quota/dquot.c:356 [inline] dqget+0x38c/0x628 fs/quota/dquot.c:983 dquot_transfer+0x1e8/0x414 fs/quota/dquot.c:2150 ext4_setattr+0x490/0xacc fs/ext4/inode.c:5516 notify_change+0x6d0/0x750 fs/attr.c:499 chown_common+0x2b0/0x39c fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xb4/0x110 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x28/0x3c fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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+0x44/0x164 kernel/locking/rwsem.c:1520 ext4_setattr+0x480/0xacc fs/ext4/inode.c:5515 notify_change+0x6d0/0x750 fs/attr.c:499 chown_common+0x2b0/0x39c fs/open.c:736 do_fchownat+0x104/0x1f8 fs/open.c:767 __do_sys_fchownat fs/open.c:782 [inline] __se_sys_fchownat fs/open.c:779 [inline] __arm64_sys_fchownat+0x30/0x44 fs/open.c:779 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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+0x650/0x770 fs/jbd2/transaction.c:463 jbd2__journal_start+0x158/0x304 fs/jbd2/transaction.c:520 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:559 ocfs2_start_trans+0x200/0x444 fs/ocfs2/journal.c:376 ocfs2_modify_bh+0x4c/0x330 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x870/0x9b0 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x358/0x45c fs/quota/dquot.c:2470 dquot_load_quota_inode+0x168/0x1ec fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x8c/0x22c fs/ocfs2/super.c:926 ocfs2_fill_super+0x1c90/0x1f98 fs/ocfs2/super.c:1139 mount_bdev+0x1b4/0x20c fs/super.c:1443 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186 legacy_get_tree+0x30/0x74 fs/fs_context.c:632 vfs_get_tree+0x3c/0xe0 fs/super.c:1573 do_new_mount+0x1e8/0x4ec fs/namespace.c:3078 path_mount+0x340/0x84c fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x338/0x3b0 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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+0x44/0x164 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x1f4/0x444 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0x4c/0x330 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x870/0x9b0 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x358/0x45c fs/quota/dquot.c:2470 dquot_load_quota_inode+0x168/0x1ec fs/quota/dquot.c:2507 ocfs2_enable_quotas+0x8c/0x22c fs/ocfs2/super.c:926 ocfs2_fill_super+0x1c90/0x1f98 fs/ocfs2/super.c:1139 mount_bdev+0x1b4/0x20c fs/super.c:1443 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186 legacy_get_tree+0x30/0x74 fs/fs_context.c:632 vfs_get_tree+0x3c/0xe0 fs/super.c:1573 do_new_mount+0x1e8/0x4ec fs/namespace.c:3078 path_mount+0x340/0x84c fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x338/0x3b0 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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+0x11a4/0x2254 kernel/locking/lockdep.c:5049 lock_acquire+0x12c/0x29c 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+0x110/0x444 fs/ocfs2/journal.c:372 ocfs2_extend_allocation+0x3a0/0xacc fs/ocfs2/file.c:593 ocfs2_extend_no_holes+0xb8/0x264 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x298/0x4e8 fs/ocfs2/quota_global.c:841 dqget+0x3b8/0x628 fs/quota/dquot.c:988 ocfs2_setattr+0x7a4/0xe14 fs/ocfs2/file.c:1233 notify_change+0x6d0/0x750 fs/attr.c:499 chown_common+0x2b0/0x39c fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xb4/0x110 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x28/0x3c fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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.0.54/5033: #0: ffff0000def8e438 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write_file+0x28/0xd8 fs/namespace.c:446 #1: ffff0000d96d89c8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff0000d96d89c8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: chown_common+0x16c/0x39c fs/open.c:726 #2: ffff0000d967e0a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0xc8/0x4e8 fs/ocfs2/quota_global.c:811 #3: ffff0000cbcf40c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #3: ffff0000cbcf40c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0xd0/0x124 fs/ocfs2/quota_global.c:313 #4: ffff0000cbcf3d60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0xdc/0x124 fs/ocfs2/quota_global.c:314 #5: ffff0000cbcf3308 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #5: ffff0000cbcf3308 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x74/0x1cd8 fs/ocfs2/suballoc.c:782 stack backtrace: CPU: 1 PID: 5033 Comm: syz.0.54 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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+0x2c8/0x2e0 kernel/locking/lockdep.c:2048 check_noncircular+0x10c/0x118 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+0x11a4/0x2254 kernel/locking/lockdep.c:5049 lock_acquire+0x12c/0x29c 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+0x110/0x444 fs/ocfs2/journal.c:372 ocfs2_extend_allocation+0x3a0/0xacc fs/ocfs2/file.c:593 ocfs2_extend_no_holes+0xb8/0x264 fs/ocfs2/file.c:1027 ocfs2_acquire_dquot+0x298/0x4e8 fs/ocfs2/quota_global.c:841 dqget+0x3b8/0x628 fs/quota/dquot.c:988 ocfs2_setattr+0x7a4/0xe14 fs/ocfs2/file.c:1233 notify_change+0x6d0/0x750 fs/attr.c:499 chown_common+0x2b0/0x39c fs/open.c:736 vfs_fchown fs/open.c:804 [inline] ksys_fchown+0xb4/0x110 fs/open.c:815 __do_sys_fchown fs/open.c:823 [inline] __se_sys_fchown fs/open.c:821 [inline] __arm64_sys_fchown+0x28/0x3c fs/open.c:821 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x174 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x3c/0xec arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x10c 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.0.54,5033,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xdf8356d3, computed 0xb8c23ae4. Applying ECC. (syz.0.54,5033,0):ocfs2_block_check_validate:416 ERROR: Fixed CRC32 failed: stored: 0xdf8356d3, computed 0x2acb7e3c (syz.0.54,5033,0):ocfs2_read_quota_phys_block:160 ERROR: status = -5 (syz.0.54,5033,0):ocfs2_quota_read:201 ERROR: status = -5 Quota error (device loop0): qtree_write_dquot: Error -5 occurred while creating quota (syz.0.54,5033,0):ocfs2_acquire_dquot:878 ERROR: status = -5