(syz.3.2629,14645,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.3.2629/14645 is trying to acquire lock: ffff888054ff0650 (sb_internal#3){.+.+}-{0:0}, at: ocfs2_acquire_dquot+0x681/0xb20 fs/ocfs2/quota_global.c:848 but task is already holding lock: ffff8880593a3f60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1fe/0x290 fs/ocfs2/quota_global.c:314 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}: down_write+0x36/0x60 kernel/locking/rwsem.c:1573 ocfs2_lock_global_qf+0x1fe/0x290 fs/ocfs2/quota_global.c:314 ocfs2_acquire_dquot+0x2a0/0xb20 fs/ocfs2/quota_global.c:816 dqget+0x778/0xeb0 fs/quota/dquot.c:988 __dquot_initialize+0x3c3/0xcd0 fs/quota/dquot.c:1517 ocfs2_get_init_inode+0x144/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x8c8/0x25b0 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:657 vfs_mkdir+0x387/0x570 fs/namei.c:4114 do_mkdirat+0x1d8/0x440 fs/namei.c:4139 __do_sys_mkdirat fs/namei.c:4154 [inline] __se_sys_mkdirat fs/namei.c:4152 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #5 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}: down_write+0x36/0x60 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_lock_global_qf+0x1d7/0x290 fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x2a0/0xb20 fs/ocfs2/quota_global.c:816 dqget+0x778/0xeb0 fs/quota/dquot.c:988 __dquot_initialize+0x3c3/0xcd0 fs/quota/dquot.c:1517 ocfs2_get_init_inode+0x144/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x8c8/0x25b0 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:657 vfs_mkdir+0x387/0x570 fs/namei.c:4114 do_mkdirat+0x1d8/0x440 fs/namei.c:4139 __do_sys_mkdirat fs/namei.c:4154 [inline] __se_sys_mkdirat fs/namei.c:4152 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #4 (&dquot->dq_lock){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x12d/0xaf0 kernel/locking/mutex.c:747 dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6811 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412 __dquot_alloc_space+0x5fc/0xe60 fs/quota/dquot.c:1752 dquot_alloc_space_nodirty include/linux/quotaops.h:300 [inline] dquot_alloc_space include/linux/quotaops.h:313 [inline] dquot_alloc_block include/linux/quotaops.h:337 [inline] ext4_mb_new_blocks+0xf8d/0x4760 fs/ext4/mballoc.c:5738 ext4_ext_map_blocks+0x195b/0x6810 fs/ext4/extents.c:4340 ext4_map_blocks+0x9de/0x1b70 fs/ext4/inode.c:679 ext4_getblk+0x1cc/0x6f0 fs/ext4/inode.c:890 ext4_bread+0x26/0x170 fs/ext4/inode.c:946 ext4_append+0x2be/0x560 fs/ext4/namei.c:83 ext4_add_entry+0x8eb/0xdb0 fs/ext4/namei.c:2511 ext4_add_nondir+0x93/0x270 fs/ext4/namei.c:2845 ext4_create+0x2e6/0x470 fs/ext4/namei.c:2891 lookup_open fs/namei.c:3490 [inline] open_last_lookups fs/namei.c:3558 [inline] path_openat+0x1181/0x2ee0 fs/namei.c:3788 do_filp_open+0x1f1/0x430 fs/namei.c:3818 do_sys_openat2+0x150/0x4b0 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_open fs/open.c:1344 [inline] __se_sys_open fs/open.c:1340 [inline] __x64_sys_open+0x11b/0x140 fs/open.c:1340 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #3 (&ei->i_data_sem){++++}-{3:3}: down_write+0x36/0x60 kernel/locking/rwsem.c:1573 ext4_truncate+0x999/0x1240 fs/ext4/inode.c:4290 ext4_setattr+0x10cb/0x19f0 fs/ext4/inode.c:5649 notify_change+0xc74/0xf40 fs/attr.c:499 do_truncate+0x1ac/0x240 fs/open.c:65 do_sys_ftruncate+0x312/0x3c0 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (jbd2_handle){++++}-{0:0}: wait_transaction_locked+0x1bf/0x270 fs/jbd2/transaction.c:177 add_transaction_credits fs/jbd2/transaction.c:241 [inline] start_this_handle+0x7ec/0x2230 fs/jbd2/transaction.c:422 jbd2__journal_restart+0x233/0x6c0 fs/jbd2/transaction.c:815 ocfs2_extend_trans+0x2fc/0x800 fs/ocfs2/journal.c:459 ocfs2_extend_rotate_transaction fs/ocfs2/alloc.c:2297 [inline] ocfs2_try_to_merge_extent+0xdb9/0x1cd0 fs/ocfs2/alloc.c:3805 ocfs2_split_extent+0x1a82/0x21f0 fs/ocfs2/alloc.c:5131 ocfs2_change_extent_flag+0xafb/0xe10 fs/ocfs2/alloc.c:5222 ocfs2_mark_extent_written+0x30f/0x600 fs/ocfs2/alloc.c:5268 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2377 [inline] ocfs2_dio_end_io+0xc34/0x1200 fs/ocfs2/aops.c:2431 dio_complete+0x251/0x710 fs/direct-io.c:271 __blockdev_direct_IO+0x2f25/0x3570 fs/direct-io.c:1320 ocfs2_direct_IO+0x233/0x2a0 fs/ocfs2/aops.c:2468 generic_file_direct_write+0x10f/0x330 mm/filemap.c:3787 __generic_file_write_iter+0x15f/0x2a0 mm/filemap.c:3945 ocfs2_file_write_iter+0x1660/0x1f00 fs/ocfs2/file.c:2469 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x642/0xb10 fs/read_write.c:861 iter_file_splice_write+0x699/0xcc0 fs/splice.c:685 do_splice_from fs/splice.c:763 [inline] direct_splice_actor+0xe1/0x130 fs/splice.c:950 splice_direct_to_actor+0x48b/0xb90 fs/splice.c:896 do_splice_direct+0x1ce/0x2f0 fs/splice.c:1002 do_sendfile+0x5f3/0xea0 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3a4/0x6f0 fs/ocfs2/journal.c:374 ocfs2_mknod+0xf77/0x25b0 fs/ocfs2/namei.c:361 ocfs2_create+0x1b6/0x4b0 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3490 [inline] open_last_lookups fs/namei.c:3558 [inline] path_openat+0x1181/0x2ee0 fs/namei.c:3788 do_filp_open+0x1f1/0x430 fs/namei.c:3818 do_sys_openat2+0x150/0x4b0 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_open fs/open.c:1344 [inline] __se_sys_open fs/open.c:1340 [inline] __x64_sys_open+0x11b/0x140 fs/open.c:1340 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (sb_internal#3){.+.+}-{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+0x2d07/0x7d10 kernel/locking/lockdep.c:5049 lock_acquire+0x1bb/0x4a0 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+0x2a5/0x6f0 fs/ocfs2/journal.c:372 ocfs2_acquire_dquot+0x681/0xb20 fs/ocfs2/quota_global.c:848 dqget+0x778/0xeb0 fs/quota/dquot.c:988 __dquot_initialize+0x3c3/0xcd0 fs/quota/dquot.c:1517 ocfs2_get_init_inode+0x144/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x8c8/0x25b0 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:657 vfs_mkdir+0x387/0x570 fs/namei.c:4114 do_mkdirat+0x1d8/0x440 fs/namei.c:4139 __do_sys_mkdirat fs/namei.c:4154 [inline] __se_sys_mkdirat fs/namei.c:4152 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: sb_internal#3 --> &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(sb_internal#3); *** DEADLOCK *** 6 locks held by syz.3.2629/14645: #0: ffff888054ff0460 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:402 #1: ffff88805904ed88 (&type->i_mutex_dir_key#9/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff88805904ed88 (&type->i_mutex_dir_key#9/1){+.+.}-{3:3}, at: filename_create+0x208/0x470 fs/namei.c:3884 #2: ffff888053e742c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff888053e742c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x16d/0x4810 fs/ocfs2/suballoc.c:782 #3: ffff8880487e00a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x293/0xb20 fs/ocfs2/quota_global.c:811 #4: ffff8880593a42c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #4: ffff8880593a42c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x1d7/0x290 fs/ocfs2/quota_global.c:313 #5: ffff8880593a3f60 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1fe/0x290 fs/ocfs2/quota_global.c:314 stack backtrace: CPU: 0 PID: 14645 Comm: syz.3.2629 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 Call Trace: dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106 check_noncircular+0x296/0x330 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+0x2d07/0x7d10 kernel/locking/lockdep.c:5049 lock_acquire+0x1bb/0x4a0 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+0x2a5/0x6f0 fs/ocfs2/journal.c:372 ocfs2_acquire_dquot+0x681/0xb20 fs/ocfs2/quota_global.c:848 dqget+0x778/0xeb0 fs/quota/dquot.c:988 __dquot_initialize+0x3c3/0xcd0 fs/quota/dquot.c:1517 ocfs2_get_init_inode+0x144/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x8c8/0x25b0 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:657 vfs_mkdir+0x387/0x570 fs/namei.c:4114 do_mkdirat+0x1d8/0x440 fs/namei.c:4139 __do_sys_mkdirat fs/namei.c:4154 [inline] __se_sys_mkdirat fs/namei.c:4152 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7feb9b19ae57 Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feb9bfd0e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007feb9bfd0ee0 RCX: 00007feb9b19ae57 RDX: 00000000000001ff RSI: 0000200000000280 RDI: 00000000ffffff9c RBP: 0000200000000040 R08: 00002000000007c0 R09: 0000000000000000 R10: 0000200000000040 R11: 0000000000000246 R12: 0000200000000280 R13: 00007feb9bfd0ea0 R14: 0000000000000000 R15: 0000000000000000