============================================
WARNING: possible recursive locking detected
6.12.0-rc1-syzkaller-g80cb3fb61135 #0 Not tainted
--------------------------------------------
syz.0.64/6811 is trying to acquire lock:
ffff0000db3c9e60 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1109 [inline]
ffff0000db3c9e60 (&ni->ni_lock/4){+.+.}-{3:3}, at: mi_read+0x26c/0x4d8 fs/ntfs3/record.c:148

but task is already holding lock:
ffff0000db3ce7d0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1109 [inline]
ffff0000db3ce7d0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0xf8/0x1f8 fs/ntfs3/namei.c:84

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&ni->ni_lock/4);
  lock(&ni->ni_lock/4);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

3 locks held by syz.0.64/6811:
 #0: ffff0000d5b4c420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:515
 #1: ffff0000db3cea68 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
 #1: ffff0000db3cea68 (&type->i_mutex_dir_key#8/1){+.+.}-{3:3}, at: do_unlinkat+0x2dc/0x700 fs/namei.c:4520
 #2: ffff0000db3ce7d0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1109 [inline]
 #2: ffff0000db3ce7d0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_lookup+0xf8/0x1f8 fs/ntfs3/namei.c:84

stack backtrace:
CPU: 0 UID: 0 PID: 6811 Comm: syz.0.64 Not tainted 6.12.0-rc1-syzkaller-g80cb3fb61135 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:319
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:326
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_deadlock_bug+0x4e8/0x668 kernel/locking/lockdep.c:3037
 check_deadlock kernel/locking/lockdep.c:3089 [inline]
 validate_chain kernel/locking/lockdep.c:3891 [inline]
 __lock_acquire+0x6180/0x77c8 kernel/locking/lockdep.c:5202
 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825
 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:608
 __mutex_lock kernel/locking/mutex.c:752 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804
 ni_lock fs/ntfs3/ntfs_fs.h:1109 [inline]
 mi_read+0x26c/0x4d8 fs/ntfs3/record.c:148
 ntfs_read_mft fs/ntfs3/inode.c:70 [inline]
 ntfs_iget5+0x358/0x2c0c fs/ntfs3/inode.c:537
 dir_search_u+0x298/0x324 fs/ntfs3/dir.c:264
 ntfs_lookup+0x108/0x1f8 fs/ntfs3/namei.c:85
 lookup_one_qstr_excl+0x108/0x230 fs/namei.c:1633
 do_unlinkat+0x2fc/0x700 fs/namei.c:4521
 __do_sys_unlinkat fs/namei.c:4576 [inline]
 __se_sys_unlinkat fs/namei.c:4569 [inline]
 __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:4569
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:732
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:750
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598