============================================
WARNING: possible recursive locking detected
syzkaller #0 Tainted: G             L     
--------------------------------------------
syz-executor/14076 is trying to acquire lock:
ffff88811e0d31f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: mi_read+0x2dd/0x5b0

but task is already holding lock:
ffff88811e0d54f8 (&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-executor/14076:
 #0: ffff8881bbe77cf0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x246/0x320
 #1: ffff88811e0d5780 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: iterate_dir+0x209/0x4d0
 #2: ffff88811e0d54f8 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_readdir+0x749/0xec0

stack backtrace:
CPU: 1 UID: 0 PID: 14076 Comm: syz-executor 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+0x27a/0x290
 __lock_acquire+0x261c/0x2e50
 lock_acquire+0x115/0x350
 __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: 0033:0x7ff53c1c6a73
Code: c7 c0 e8 ff ff ff 64 c7 00 16 00 00 00 31 c0 eb 9e e8 81 9b fd ff 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 e8 ff ff ff f7 d8
RSP: 002b:00007fff85f39248 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 0000555583e2ba30 RCX: 00007ff53c1c6a73
RDX: 0000000000008000 RSI: 0000555583e2ba60 RDI: 0000000000000005
RBP: 0000555583e2ba60 R08: 00007ff53c3f2e20 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 0000555583e2ba34
R13: ffffffffffffffe8 R14: 0000000000000010 R15: 00007fff85f3b4f0
 </TASK>
ntfs3(loop8): MFT: r=20, expect seq=1 instead of 0!
ntfs3(loop8): MFT: r=1b, expect seq=1 instead of 0!
ntfs3(loop8): MFT: r=20, expect seq=1 instead of 0!
ntfs3(loop8): MFT: r=20, expect seq=1 instead of 0!
