loop5: detected capacity change from 0 to 4096
ntfs3(loop5): Different NTFS sector size (1024) and media sector size (512).
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.5.15112/20768 is trying to acquire lock:
ffff888023d5e540 (&mm->mmap_lock){++++}-{4:4}, at: __might_fault+0xaf/0x130

but task is already holding lock:
ffff88801a815fa8 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ntfs_fiemap+0x10a/0x1a0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&ni->ni_lock#3/5){+.+.}-{4:4}:
       __mutex_lock+0x19f/0x1300
       attr_data_get_block+0x2f1/0x1e90
       ntfs_file_mmap_prepare+0x55c/0x8b0
       mmap_region+0xdb2/0x2240
       do_mmap+0xc39/0x10c0
       vm_mmap_pgoff+0x2c9/0x4f0
       ksys_mmap_pgoff+0x51e/0x760
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&mm->mmap_lock){++++}-{4:4}:
       __lock_acquire+0x15a5/0x2cf0
       lock_acquire+0x106/0x330
       __might_fault+0xcb/0x130
       _copy_to_user+0x2c/0xb0
       fiemap_fill_next_extent+0x1dd/0x3c0
       ni_fiemap+0x8f1/0xca0
       ntfs_fiemap+0x11d/0x1a0
       do_vfs_ioctl+0x125a/0x1530
       __se_sys_ioctl+0x82/0x170
       do_syscall_64+0xe2/0xf80
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ni->ni_lock#3/5);
                               lock(&mm->mmap_lock);
                               lock(&ni->ni_lock#3/5);
  rlock(&mm->mmap_lock);

 *** DEADLOCK ***

1 lock held by syz.5.15112/20768:
 #0: ffff88801a815fa8 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ntfs_fiemap+0x10a/0x1a0

stack backtrace:
CPU: 0 UID: 0 PID: 20768 Comm: syz.5.15112 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_circular_bug+0x2e1/0x300
 check_noncircular+0x12e/0x150
 __lock_acquire+0x15a5/0x2cf0
 lock_acquire+0x106/0x330
 __might_fault+0xcb/0x130
 _copy_to_user+0x2c/0xb0
 fiemap_fill_next_extent+0x1dd/0x3c0
 ni_fiemap+0x8f1/0xca0
 ntfs_fiemap+0x11d/0x1a0
 do_vfs_ioctl+0x125a/0x1530
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe743f9acb9
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:00007fe744e9f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe744215fa0 RCX: 00007fe743f9acb9
RDX: 0000200000000180 RSI: 00000000c020660b RDI: 000000000000000b
RBP: 00007fe744008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe744216038 R14: 00007fe744215fa0 R15: 00007ffd063c1c28
 </TASK>
netlink: 4 bytes leftover after parsing attributes in process `syz.5.15112'.
