loop2: detected capacity change from 0 to 32768
loop2: detected capacity change from 0 to 4096
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.2.39/6202 is trying to acquire lock:
ffff88810375ef28 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: attr_data_get_block+0x2ec/0x1ec0

but task is already holding lock:
ffff888023bfed60 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x211/0x4d0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&mm->mmap_lock){++++}-{4:4}:
       lock_acquire+0x120/0x360
       __might_fault+0xcc/0x130
       _copy_to_user+0x2c/0xb0
       fiemap_fill_next_extent+0x1c0/0x390
       ni_fiemap+0x89c/0xbf0
       ntfs_fiemap+0x11d/0x1a0
       do_vfs_ioctl+0x1173/0x1430
       __se_sys_ioctl+0x82/0x170
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ni->ni_lock#3/5){+.+.}-{4:4}:
       validate_chain+0xb9b/0x2140
       __lock_acquire+0xab9/0xd20
       lock_acquire+0x120/0x360
       __mutex_lock+0x187/0x1350
       attr_data_get_block+0x2ec/0x1ec0
       ntfs_file_mmap_prepare+0x4cf/0x7d0
       mmap_region+0xb41/0x20c0
       do_mmap+0xc45/0x10d0
       vm_mmap_pgoff+0x2a6/0x4d0
       ksys_mmap_pgoff+0x51f/0x760
       do_syscall_64+0xfa/0x3b0
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

 Possible unsafe locking scenario:

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

 *** DEADLOCK ***

1 lock held by syz.2.39/6202:
 #0: ffff888023bfed60 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x211/0x4d0

stack backtrace:
CPU: 1 UID: 0 PID: 6202 Comm: syz.2.39 Not tainted syzkaller #0 PREEMPT(full) 
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+0x189/0x250
 print_circular_bug+0x2ee/0x310
 check_noncircular+0x134/0x160
 validate_chain+0xb9b/0x2140
 __lock_acquire+0xab9/0xd20
 lock_acquire+0x120/0x360
 __mutex_lock+0x187/0x1350
 attr_data_get_block+0x2ec/0x1ec0
 ntfs_file_mmap_prepare+0x4cf/0x7d0
 mmap_region+0xb41/0x20c0
 do_mmap+0xc45/0x10d0
 vm_mmap_pgoff+0x2a6/0x4d0
 ksys_mmap_pgoff+0x51f/0x760
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd09b8eba9
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:00007fcd0aa45038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fcd09dd5fa0 RCX: 00007fcd09b8eba9
RDX: 00000000027ffff7 RSI: 0000000000600000 RDI: 0000200000000000
RBP: 00007fcd09c11e19 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000004012011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcd09dd6038 R14: 00007fcd09dd5fa0 R15: 00007ffcd1586d08
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6202 at fs/ntfs3/frecord.c:3030 ni_rename+0xee/0x100
Modules linked in:
CPU: 1 UID: 0 PID: 6202 Comm: syz.2.39 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ni_rename+0xee/0x100
Code: 8b 05 a6 fd 99 0f 48 3b 44 24 10 75 22 44 89 e0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 49 59 76 08 cc e8 43 fc b8 fe 90 <0f> 0b 90 eb c5 e8 48 74 73 08 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc9000436fab8 EFLAGS: 00010283
RAX: ffffffff8306b29d RBX: 00000000fffffffe RCX: 0000000000080000
RDX: ffffc90007ff9000 RSI: 000000000000392b RDI: 000000000000392c
RBP: 00000000fffffffe R08: ffffffff8fa3a037 R09: 1ffffffff1f47406
R10: dffffc0000000000 R11: fffffbfff1f47407 R12: 0000000000000000
R13: ffff888123dfd500 R14: ffff888103648eb0 R15: ffff88810375e6d0
FS:  00007fcd0aa456c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b324f3ff8 CR3: 00000000213b2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ntfs_rename+0x735/0xbf0
 vfs_rename+0xbda/0xf00
 do_renameat2+0x6ce/0xa80
 __x64_sys_rename+0x82/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd09b8eba9
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:00007fcd0aa45038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fcd09dd5fa0 RCX: 00007fcd09b8eba9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 00002000000002c0
RBP: 00007fcd09c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcd09dd6038 R14: 00007fcd09dd5fa0 R15: 00007ffcd1586d08
 </TASK>
