======================================================
WARNING: possible circular locking dependency detected
6.15.0-rc1-syzkaller #0 Not tainted
------------------------------------------------------
syz.0.328/7963 is trying to acquire lock:
ffff888050c75f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
ffff888050c75f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}, at: ocfs2_remove_inode+0x15b/0x8a0 fs/ocfs2/inode.c:669

but task is already holding lock:
ffff88807872a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
ffff88807872a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2d5/0x1210 fs/ocfs2/inode.c:790

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]){+.+.}-{4:4}:
       down_write+0x92/0x200 kernel/locking/rwsem.c:1577
       inode_lock include/linux/fs.h:867 [inline]
       ocfs2_del_inode_from_orphan+0x112/0x700 fs/ocfs2/namei.c:2727
       ocfs2_dio_end_io_write+0x2cb/0xf30 fs/ocfs2/aops.c:2303
       ocfs2_dio_end_io+0x136/0x2c0 fs/ocfs2/aops.c:2401
       dio_complete+0x224/0x970 fs/direct-io.c:281
       __blockdev_direct_IO+0x33eb/0x4080 fs/direct-io.c:1303
       ocfs2_direct_IO+0x263/0x360 fs/ocfs2/aops.c:2438
       generic_file_direct_write+0x19a/0x410 mm/filemap.c:4036
       __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4205
       ocfs2_file_write_iter+0xbc4/0x21b0 fs/ocfs2/file.c:2469
       iter_file_splice_write+0x91f/0x1150 fs/splice.c:738
       do_splice_from fs/splice.c:935 [inline]
       direct_splice_actor+0x192/0x6c0 fs/splice.c:1158
       splice_direct_to_actor+0x345/0xa30 fs/splice.c:1102
       do_splice_direct_actor fs/splice.c:1201 [inline]
       do_splice_direct+0x174/0x240 fs/splice.c:1227
       do_sendfile+0xafd/0xe50 fs/read_write.c:1368
       __do_sys_sendfile64 fs/read_write.c:1429 [inline]
       __se_sys_sendfile64 fs/read_write.c:1415 [inline]
       __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1415
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}:
       down_write+0x92/0x200 kernel/locking/rwsem.c:1577
       ocfs2_create_local_dquot+0x157/0xb30 fs/ocfs2/quota_local.c:1232
       ocfs2_acquire_dquot+0x626/0xb00 fs/ocfs2/quota_global.c:883
       dqget+0x693/0x1180 fs/quota/dquot.c:977
       dquot_set_dqblk+0x2b/0x1290 fs/quota/dquot.c:2820
       quota_setquota+0x4c4/0x5e0 fs/quota/quota.c:310
       do_quotactl+0xaf6/0x13d0 fs/quota/quota.c:802
       __do_sys_quotactl fs/quota/quota.c:961 [inline]
       __se_sys_quotactl fs/quota/quota.c:917 [inline]
       __x64_sys_quotactl+0x1b3/0x440 fs/quota/quota.c:917
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&dquot->dq_lock){+.+.}-{4:4}:
       __mutex_lock_common kernel/locking/mutex.c:601 [inline]
       __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746
       wait_on_dquot fs/quota/dquot.c:354 [inline]
       dqget+0x5f1/0x1180 fs/quota/dquot.c:972
       __dquot_initialize+0x586/0xd50 fs/quota/dquot.c:1505
       ocfs2_get_init_inode+0xe7/0x1b0 fs/ocfs2/namei.c:202
       ocfs2_mknod+0x974/0x2540 fs/ocfs2/namei.c:310
       ocfs2_mkdir+0x17c/0x490 fs/ocfs2/namei.c:656
       vfs_mkdir+0x593/0x8c0 fs/namei.c:4324
       do_mkdirat+0x304/0x3e0 fs/namei.c:4357
       __do_sys_mkdirat fs/namei.c:4374 [inline]
       __se_sys_mkdirat fs/namei.c:4372 [inline]
       __x64_sys_mkdirat+0x83/0xb0 fs/namei.c:4372
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3166 [inline]
       check_prevs_add kernel/locking/lockdep.c:3285 [inline]
       validate_chain kernel/locking/lockdep.c:3909 [inline]
       __lock_acquire+0x1173/0x1ba0 kernel/locking/lockdep.c:5235
       lock_acquire kernel/locking/lockdep.c:5866 [inline]
       lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823
       down_write+0x92/0x200 kernel/locking/rwsem.c:1577
       inode_lock include/linux/fs.h:867 [inline]
       ocfs2_remove_inode+0x15b/0x8a0 fs/ocfs2/inode.c:669
       ocfs2_wipe_inode+0x446/0x1210 fs/ocfs2/inode.c:832
       ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline]
       ocfs2_evict_inode+0x6e0/0x1680 fs/ocfs2/inode.c:1230
       evict+0x3e6/0x920 fs/inode.c:810
       iput_final fs/inode.c:1898 [inline]
       iput fs/inode.c:1924 [inline]
       iput+0x521/0x880 fs/inode.c:1910
       d_delete_notify include/linux/fsnotify.h:402 [inline]
       vfs_rmdir fs/namei.c:4432 [inline]
       vfs_rmdir+0x487/0x690 fs/namei.c:4396
       do_rmdir+0x2e8/0x3c0 fs/namei.c:4474
       __do_sys_rmdir fs/namei.c:4493 [inline]
       __se_sys_rmdir fs/namei.c:4491 [inline]
       __x64_sys_rmdir+0xc5/0x110 fs/namei.c:4491
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xcd/0x260 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[args->fi_sysfile_type]#4 --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
                               lock(&ocfs2_quota_ip_alloc_sem_key);
                               lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]);
  lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4);

 *** DEADLOCK ***

4 locks held by syz.0.328/7963:
 #0: ffff888078cfe420 (sb_writers#20){.+.+}-{0:0}, at: do_rmdir+0x1e2/0x3c0 fs/namei.c:4462
 #1: ffff888050c7b480 (&type->i_mutex_dir_key#17/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:902 [inline]
 #1: ffff888050c7b480 (&type->i_mutex_dir_key#17/1){+.+.}-{4:4}, at: do_rmdir+0x233/0x3c0 fs/namei.c:4466
 #2: ffff888035bacbd0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0xe4/0x2e0 fs/ocfs2/dlmglue.c:2875
 #3: ffff88807872a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
 #3: ffff88807872a640 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2d5/0x1210 fs/ocfs2/inode.c:790

stack backtrace:
CPU: 1 UID: 0 PID: 7963 Comm: syz.0.328 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2079
 check_noncircular+0x14c/0x170 kernel/locking/lockdep.c:2211
 check_prev_add kernel/locking/lockdep.c:3166 [inline]
 check_prevs_add kernel/locking/lockdep.c:3285 [inline]
 validate_chain kernel/locking/lockdep.c:3909 [inline]
 __lock_acquire+0x1173/0x1ba0 kernel/locking/lockdep.c:5235
 lock_acquire kernel/locking/lockdep.c:5866 [inline]
 lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823
 down_write+0x92/0x200 kernel/locking/rwsem.c:1577
 inode_lock include/linux/fs.h:867 [inline]
 ocfs2_remove_inode+0x15b/0x8a0 fs/ocfs2/inode.c:669
 ocfs2_wipe_inode+0x446/0x1210 fs/ocfs2/inode.c:832
 ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline]
 ocfs2_evict_inode+0x6e0/0x1680 fs/ocfs2/inode.c:1230
 evict+0x3e6/0x920 fs/inode.c:810
 iput_final fs/inode.c:1898 [inline]
 iput fs/inode.c:1924 [inline]
 iput+0x521/0x880 fs/inode.c:1910
 d_delete_notify include/linux/fsnotify.h:402 [inline]
 vfs_rmdir fs/namei.c:4432 [inline]
 vfs_rmdir+0x487/0x690 fs/namei.c:4396
 do_rmdir+0x2e8/0x3c0 fs/namei.c:4474
 __do_sys_rmdir fs/namei.c:4493 [inline]
 __se_sys_rmdir fs/namei.c:4491 [inline]
 __x64_sys_rmdir+0xc5/0x110 fs/namei.c:4491
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4e1178d169
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:00007f4e12560038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f4e119a6080 RCX: 00007f4e1178d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000400
RBP: 00007f4e1180e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f4e119a6080 R15: 00007ffffbaae628
 </TASK>