loop0: detected capacity change from 0 to 4096
ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512).
loop0: detected capacity change from 4096 to 4095
ntfs3: loop0: ino=5, "/" directory corrupted
============================================
WARNING: possible recursive locking detected
6.12.0-rc1-syzkaller-00306-g27cc6fdf7201 #0 Not tainted
--------------------------------------------
syz.0.0/5109 is trying to acquire lock:
ffff888012f08100 (&ni->ni_lock#2){+.+.}-{3:3}, at: ntfs_set_state+0x1ff/0x6c0 fs/ntfs3/fsntfs.c:947

but task is already holding lock:
ffff888012f0ef28 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1129 [inline]
ffff888012f0ef28 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_write_inode+0x1bc/0x1010 fs/ntfs3/frecord.c:3333

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

       CPU0
       ----
  lock(&ni->ni_lock#2);
  lock(&ni->ni_lock#2);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by syz.0.0/5109:
 #0: ffff88804ba6e420 (sb_writers#11){.+.+}-{0:0}, at: do_ftruncate+0x28b/0x580 fs/open.c:178
 #1: ffff888012f0f1c0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
 #1: ffff888012f0f1c0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: do_truncate fs/open.c:63 [inline]
 #1: ffff888012f0f1c0 (&sb->s_type->i_mutex_key#19){+.+.}-{3:3}, at: do_ftruncate+0x44e/0x580 fs/open.c:181
 #2: ffff888012f0ef28 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1129 [inline]
 #2: ffff888012f0ef28 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_write_inode+0x1bc/0x1010 fs/ntfs3/frecord.c:3333
 #3: ffff888012f0e7d0 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1129 [inline]
 #3: ffff888012f0e7d0 (&ni->ni_lock#2){+.+.}-{3:3}, at: ni_update_parent+0x9d2/0xdd0 fs/ntfs3/frecord.c:3298

stack backtrace:
CPU: 0 UID: 0 PID: 5109 Comm: syz.0.0 Not tainted 6.12.0-rc1-syzkaller-00306-g27cc6fdf7201 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_deadlock_bug+0x483/0x620 kernel/locking/lockdep.c:3037
 check_deadlock kernel/locking/lockdep.c:3089 [inline]
 validate_chain+0x15e2/0x5920 kernel/locking/lockdep.c:3891
 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
 __mutex_lock_common kernel/locking/mutex.c:608 [inline]
 __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752
 ntfs_set_state+0x1ff/0x6c0 fs/ntfs3/fsntfs.c:947
 indx_read+0x5a7/0xc50
 indx_find+0x47a/0xbf0 fs/ntfs3/index.c:1181
 indx_update_dup+0x485/0x860 fs/ntfs3/index.c:2666
 ni_update_parent+0xa18/0xdd0 fs/ntfs3/frecord.c:3301
 ni_write_inode+0xd9a/0x1010 fs/ntfs3/frecord.c:3392
 ntfs_truncate fs/ntfs3/file.c:472 [inline]
 ntfs3_setattr+0x962/0xb80 fs/ntfs3/file.c:774
 notify_change+0xbca/0xe90 fs/attr.c:503
 do_truncate fs/open.c:65 [inline]
 do_ftruncate+0x462/0x580 fs/open.c:181
 do_sys_ftruncate fs/open.c:199 [inline]
 __do_sys_ftruncate fs/open.c:207 [inline]
 __se_sys_ftruncate fs/open.c:205 [inline]
 __x64_sys_ftruncate+0x95/0xf0 fs/open.c:205
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6f2277dff9
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:00007f6f23555038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f6f22935f80 RCX: 00007f6f2277dff9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000006
RBP: 00007f6f227f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6f22935f80 R15: 00007ffe3e197718
 </TASK>
ntfs3: loop0: Mark volume as dirty due to NTFS errors