============================================
WARNING: possible recursive locking detected
syzkaller #0 Tainted: G             L     
--------------------------------------------
syz.1.2734/19570 is trying to acquire lock:
ffff8881b2c880f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: mi_read+0x2dd/0x5b0

but task is already holding lock:
ffff8881ba7d46f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_readdir+0x749/0xec0

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

       CPU0
       ----
  lock(&ni->ni_lock/5);
  lock(&ni->ni_lock/5);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

3 locks held by syz.1.2734/19570:
 #0: ffff88816a0e90f0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x246/0x320
 #1: ffff8881ba7d4980 (&type->i_mutex_dir_key#10){++++}-{4:4}, at: iterate_dir+0x209/0x4d0
 #2: ffff8881ba7d46f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_readdir+0x749/0xec0

stack backtrace:
CPU: 1 UID: 0 PID: 19570 Comm: syz.1.2734 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_deadlock_bug+0x279/0x290
 __lock_acquire+0x24df/0x2cf0
 lock_acquire+0x106/0x350
 __mutex_lock+0x19d/0x1550
 mi_read+0x2dd/0x5b0
 ntfs_iget5+0x433/0x3760
 ntfs_read_hdr+0x787/0xc10
 ntfs_readdir+0x9e1/0xec0
 iterate_dir+0x2e2/0x4d0
 __se_sys_getdents64+0xf1/0x280
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff8a379e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff8a46f1028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007ff8a3a25fa0 RCX: 00007ff8a379e0d9
RDX: 00000000000000b3 RSI: 0000200000000200 RDI: 0000000000000008
RBP: 00007ff8a3835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff8a3a26038 R14: 00007ff8a3a25fa0 R15: 00007ffe42005d78
 </TASK>
ntfs3(loop1): MFT: r=20, expect seq=1 instead of 0!
ntfs3(loop1): MFT: r=1b, expect seq=1 instead of 0!
ntfs3(loop1): MFT: r=1f, expect seq=1 instead of 0!
ntfs3(loop1): MFT: r=1f, expect seq=1 instead of 0!
