JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,6) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.6.99-syzkaller #0 Not tainted ------------------------------------------------------ syz.6.1925/12440 is trying to acquire lock: ffff888052ca00a8 (&dquot->dq_lock){+.+.}-{3:3}, at: wait_on_dquot fs/quota/dquot.c:356 [inline] ffff888052ca00a8 (&dquot->dq_lock){+.+.}-{3:3}, at: dqget+0x6fc/0xeb0 fs/quota/dquot.c:983 but task is already holding lock: ffff88805b3cc2d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff88805b3cc2d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x165/0x4360 fs/ocfs2/suballoc.c:782 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}: down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:655 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:818 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline] ocfs2_evict_inode+0x1313/0x3e60 fs/ocfs2/inode.c:1216 evict+0x486/0x870 fs/inode.c:705 ocfs2_dentry_iput+0x248/0x370 fs/ocfs2/dcache.c:418 __dentry_kill+0x431/0x650 fs/dcache.c:611 dentry_kill+0xb8/0x290 fs/dcache.c:-1 dput+0xfe/0x1e0 fs/dcache.c:918 __fput+0x5e5/0x970 fs/file_table.c:392 task_work_run+0x1ce/0x250 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}: down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_del_inode_from_orphan+0x135/0x740 fs/ocfs2/namei.c:2716 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2333 [inline] ocfs2_dio_end_io+0x47b/0x10f0 fs/ocfs2/aops.c:2431 dio_complete+0x254/0x710 fs/direct-io.c:282 __blockdev_direct_IO+0x2dc8/0x3420 fs/direct-io.c:1308 ocfs2_direct_IO+0x240/0x2b0 fs/ocfs2/aops.c:2468 generic_file_direct_write+0x1d4/0x3e0 mm/filemap.c:3941 __generic_file_write_iter+0x11b/0x230 mm/filemap.c:4097 ocfs2_file_write_iter+0x1582/0x1d00 fs/ocfs2/file.c:2468 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x79a/0xc70 fs/read_write.c:860 vfs_writev fs/read_write.c:933 [inline] do_writev+0x252/0x410 fs/read_write.c:976 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}: down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 ocfs2_create_local_dquot+0x1a4/0x1790 fs/ocfs2/quota_local.c:1224 ocfs2_acquire_dquot+0x7cf/0xaf0 fs/ocfs2/quota_global.c:871 dqget+0x77c/0xeb0 fs/quota/dquot.c:988 ocfs2_setattr+0xd63/0x1b20 fs/ocfs2/file.c:1232 notify_change+0xb0d/0xe10 fs/attr.c:499 chown_common+0x3f9/0x5a0 fs/open.c:783 vfs_fchown fs/open.c:851 [inline] ksys_fchown+0xed/0x160 fs/open.c:862 __do_sys_fchown fs/open.c:870 [inline] __se_sys_fchown fs/open.c:868 [inline] __x64_sys_fchown+0x7a/0x90 fs/open.c:868 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&dquot->dq_lock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x129/0xcc0 kernel/locking/mutex.c:747 wait_on_dquot fs/quota/dquot.c:356 [inline] dqget+0x6fc/0xeb0 fs/quota/dquot.c:983 __dquot_initialize+0x3ba/0xcb0 fs/quota/dquot.c:1516 ocfs2_get_init_inode+0x13c/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x867/0x20f0 fs/ocfs2/namei.c:310 ocfs2_create+0x196/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3488 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0x1277/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_creat fs/open.c:1512 [inline] __se_sys_creat fs/open.c:1506 [inline] __x64_sys_creat+0x90/0xb0 fs/open.c:1506 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &dquot->dq_lock --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type] --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); lock(&dquot->dq_lock); *** DEADLOCK *** 3 locks held by syz.6.1925/12440: #0: ffff8880269fe418 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:403 #1: ffff888052c96d98 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff888052c96d98 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: open_last_lookups fs/namei.c:3553 [inline] #1: ffff888052c96d98 (&type->i_mutex_dir_key#13){++++}-{3:3}, at: path_openat+0x7c6/0x3190 fs/namei.c:3786 #2: ffff88805b3cc2d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #2: ffff88805b3cc2d8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x165/0x4360 fs/ocfs2/suballoc.c:782 stack backtrace: CPU: 0 PID: 12440 Comm: syz.6.1925 Not tainted 6.6.99-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x129/0xcc0 kernel/locking/mutex.c:747 wait_on_dquot fs/quota/dquot.c:356 [inline] dqget+0x6fc/0xeb0 fs/quota/dquot.c:983 __dquot_initialize+0x3ba/0xcb0 fs/quota/dquot.c:1516 ocfs2_get_init_inode+0x13c/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x867/0x20f0 fs/ocfs2/namei.c:310 ocfs2_create+0x196/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3488 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0x1277/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_creat fs/open.c:1512 [inline] __se_sys_creat fs/open.c:1506 [inline] __x64_sys_creat+0x90/0xb0 fs/open.c:1506 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f927538e9a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f927612f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f92755b5fa0 RCX: 00007f927538e9a9 RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000200000000100 RBP: 00007f9275410ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f92755b5fa0 R15: 00007fff59ea4a58 syz.6.1925 (12440) used greatest stack depth: 17712 bytes left