syzbot

ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
======================================================
WARNING: possible circular locking dependency detected
6.17.0-rc1-syzkaller-00111-g24ea63ea3877 #0 Tainted: G        W          
------------------------------------------------------
syz.0.80/6481 is trying to acquire lock:
ffff88804a3a3e80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
ffff88804a3a3e80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_remove_inode fs/ocfs2/inode.c:731 [inline]
ffff88804a3a3e80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:894 [inline]
ffff88804a3a3e80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1155 [inline]
ffff88804a3a3e80 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x153d/0x40c0 fs/ocfs2/inode.c:1292

but task is already holding lock:
ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:852 [inline]
ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1155 [inline]
ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xf86/0x40c0 fs/ocfs2/inode.c:1292

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
       inode_lock include/linux/fs.h:869 [inline]
       ocfs2_del_inode_from_orphan+0x134/0x740 fs/ocfs2/namei.c:2730
       ocfs2_dio_end_io_write fs/ocfs2/aops.c:2306 [inline]
       ocfs2_dio_end_io+0x47b/0x1100 fs/ocfs2/aops.c:2404
       dio_complete+0x25e/0x790 fs/direct-io.c:281
       __blockdev_direct_IO+0x2bc0/0x31f0 fs/direct-io.c:1303
       ocfs2_direct_IO+0x260/0x2d0 fs/ocfs2/aops.c:2441
       generic_file_direct_write+0x1d9/0x3e0 mm/filemap.c:4109
       __generic_file_write_iter+0x120/0x240 mm/filemap.c:4278
       ocfs2_file_write_iter+0x157d/0x1d20 fs/ocfs2/file.c:2469
       iter_file_splice_write+0x9cb/0x10b0 fs/splice.c:738
       do_splice_from fs/splice.c:935 [inline]
       direct_splice_actor+0x104/0x160 fs/splice.c:1158
       splice_direct_to_actor+0x5b3/0xcd0 fs/splice.c:1102
       do_splice_direct_actor fs/splice.c:1201 [inline]
       do_splice_direct+0x187/0x270 fs/splice.c:1227
       do_sendfile+0x4ec/0x7f0 fs/read_write.c:1370
       __do_sys_sendfile64 fs/read_write.c:1431 [inline]
       __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #3 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
       ocfs2_lock_global_qf+0x1e8/0x270 fs/ocfs2/quota_global.c:314
       ocfs2_acquire_dquot+0x2b0/0xb30 fs/ocfs2/quota_global.c:828
       dqget+0x7c1/0xf20 fs/quota/dquot.c:977
       __dquot_initialize+0x3b3/0xcb0 fs/quota/dquot.c:1505
       ocfs2_get_init_inode+0x13b/0x1b0 fs/ocfs2/namei.c:205
       ocfs2_symlink+0xaee/0x23e0 fs/ocfs2/namei.c:1890
       vfs_symlink+0x143/0x2f0 fs/namei.c:4730
       do_symlinkat+0x1b1/0x3f0 fs/namei.c:4756
       __do_sys_symlinkat fs/namei.c:4772 [inline]
       __se_sys_symlinkat fs/namei.c:4769 [inline]
       __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4769
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&ocfs2_sysfile_lock_key[USER_QUOTA_SYSTEM_INODE]){+.+.}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
       inode_lock include/linux/fs.h:869 [inline]
       ocfs2_lock_global_qf+0x1ca/0x270 fs/ocfs2/quota_global.c:313
       ocfs2_acquire_dquot+0x2b0/0xb30 fs/ocfs2/quota_global.c:828
       dqget+0x7c1/0xf20 fs/quota/dquot.c:977
       __dquot_initialize+0x3b3/0xcb0 fs/quota/dquot.c:1505
       ocfs2_get_init_inode+0x13b/0x1b0 fs/ocfs2/namei.c:205
       ocfs2_symlink+0xaee/0x23e0 fs/ocfs2/namei.c:1890
       vfs_symlink+0x143/0x2f0 fs/namei.c:4730
       do_symlinkat+0x1b1/0x3f0 fs/namei.c:4756
       __do_sys_symlinkat fs/namei.c:4772 [inline]
       __se_sys_symlinkat fs/namei.c:4769 [inline]
       __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4769
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&dquot->dq_lock){+.+.}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       __mutex_lock_common kernel/locking/rtmutex_api.c:535 [inline]
       mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:547
       wait_on_dquot fs/quota/dquot.c:354 [inline]
       dqget+0x73a/0xf20 fs/quota/dquot.c:972
       __dquot_initialize+0x3b3/0xcb0 fs/quota/dquot.c:1505
       ocfs2_get_init_inode+0x13b/0x1b0 fs/ocfs2/namei.c:205
       ocfs2_symlink+0xaee/0x23e0 fs/ocfs2/namei.c:1890
       vfs_symlink+0x143/0x2f0 fs/namei.c:4730
       do_symlinkat+0x1b1/0x3f0 fs/namei.c:4756
       __do_sys_symlinkat fs/namei.c:4772 [inline]
       __se_sys_symlinkat fs/namei.c:4769 [inline]
       __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4769
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
       __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
       inode_lock include/linux/fs.h:869 [inline]
       ocfs2_remove_inode fs/ocfs2/inode.c:731 [inline]
       ocfs2_wipe_inode fs/ocfs2/inode.c:894 [inline]
       ocfs2_delete_inode fs/ocfs2/inode.c:1155 [inline]
       ocfs2_evict_inode+0x153d/0x40c0 fs/ocfs2/inode.c:1292
       evict+0x504/0x9c0 fs/inode.c:810
       d_delete_notify include/linux/fsnotify.h:377 [inline]
       vfs_rmdir+0x3ec/0x520 fs/namei.c:4474
       do_rmdir+0x25f/0x550 fs/namei.c:4516
       __do_sys_rmdir fs/namei.c:4535 [inline]
       __se_sys_rmdir fs/namei.c:4533 [inline]
       __x64_sys_rmdir+0x47/0x50 fs/namei.c:4533
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
                               lock(&ocfs2_quota_ip_alloc_sem_key);
                               lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
  lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);

 *** DEADLOCK ***

4 locks held by syz.0.80/6481:
 #0: ffff88802bc32488 (sb_writers#17){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
 #1: ffff88805b562d80 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:914 [inline]
 #1: ffff88805b562d80 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: do_rmdir+0x1b2/0x550 fs/namei.c:4508
 #2: ffff8880394e0e30 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0x106/0x250 fs/ocfs2/dlmglue.c:2875
 #3: ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline]
 #3: ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:852 [inline]
 #3: ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1155 [inline]
 #3: ffff88805b47f180 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xf86/0x40c0 fs/ocfs2/inode.c:1292

stack backtrace:
CPU: 1 UID: 0 PID: 6481 Comm: syz.0.80 Tainted: G        W           6.17.0-rc1-syzkaller-00111-g24ea63ea3877 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043
 check_noncircular+0x134/0x160 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+0xb9b/0x2140 kernel/locking/lockdep.c:3908
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 down_write+0x3a/0x50 kernel/locking/rwsem.c:1590
 inode_lock include/linux/fs.h:869 [inline]
 ocfs2_remove_inode fs/ocfs2/inode.c:731 [inline]
 ocfs2_wipe_inode fs/ocfs2/inode.c:894 [inline]
 ocfs2_delete_inode fs/ocfs2/inode.c:1155 [inline]
 ocfs2_evict_inode+0x153d/0x40c0 fs/ocfs2/inode.c:1292
 evict+0x504/0x9c0 fs/inode.c:810
 d_delete_notify include/linux/fsnotify.h:377 [inline]
 vfs_rmdir+0x3ec/0x520 fs/namei.c:4474
 do_rmdir+0x25f/0x550 fs/namei.c:4516
 __do_sys_rmdir fs/namei.c:4535 [inline]
 __se_sys_rmdir fs/namei.c:4533 [inline]
 __x64_sys_rmdir+0x47/0x50 fs/namei.c:4533
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd99f28ebe9
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:00007fd99d4ee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007fd99f4b5fa0 RCX: 00007fd99f28ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007fd99f311e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd99f4b6038 R14: 00007fd99f4b5fa0 R15: 00007ffdc6b31bc8
 </TASK>
(syz.0.80,6481,0):ocfs2_find_entry:1094 ERROR: status = -117
(syz.0.80,6481,0):ocfs2_orphan_del:2396 ERROR: status = -117
(syz.0.80,6481,0):ocfs2_orphan_del:2418 ERROR: status = -117
(syz.0.80,6481,0):ocfs2_remove_inode:752 ERROR: status = -117
(syz.0.80,6481,0):ocfs2_wipe_inode:897 ERROR: status = -117
(syz.0.80,6481,0):ocfs2_delete_inode:1158 ERROR: status = -117