ntfs3(loop7): ino=1a, mi_enum_attr
ntfs3(loop7): Failed to initialize $Extend/$Reparse.
overlay: Bad value for 'verity'
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G             L     
------------------------------------------------------
syz.7.3917/30284 is trying to acquire lock:
ffff8881ba74f518 (mapping.invalidate_lock#10){++++}-{4:4}, at: filemap_fault+0x6d7/0x13b0

but task is already holding lock:
ffff8881761a9e88 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (vm_lock){++++}-{0:0}:
       __vma_start_exclude_readers+0x283/0x930
       __vma_start_write+0xdc/0x290
       mprotect_fixup+0x761/0xb10
       setup_arg_pages+0x658/0xbd0
       load_elf_binary+0xc7e/0x2950
       bprm_execve+0x9c7/0x1630
       kernel_execve+0x8c3/0x9c0
       try_to_run_init_process+0x13/0x60
       kernel_init+0xad/0x1d0
       ret_from_fork+0x514/0xb70
       ret_from_fork_asm+0x1a/0x30

-> #2 (&mm->mmap_lock){++++}-{4:4}:
       down_read_killable+0x50/0x3b0
       mmap_read_lock_killable+0x1d/0x70
       lock_mm_and_find_vma+0x2d6/0x340
       do_user_addr_fault+0x341/0x1340
       exc_page_fault+0x6a/0xc0
       asm_exc_page_fault+0x26/0x30
       filldir+0x2bd/0x630
       ntfs_read_hdr+0x8a4/0xc10
       ntfs_readdir+0x9e1/0xec0
       iterate_dir+0x2e2/0x4d0
       __se_sys_getdents+0xf1/0x270
       do_syscall_64+0x174/0x580
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&ni->ni_lock/5){+.+.}-{4:4}:
       __mutex_lock+0x19d/0x1550
       attr_data_get_block+0x1bf/0x2a0
       ntfs_iomap_begin+0x4f0/0xf10
       iomap_iter+0x5f5/0xf80
       iomap_readahead+0x3e9/0xe80
       ntfs_readahead+0x193/0x210
       read_pages+0x193/0x5a0
       page_cache_ra_unbounded+0x754/0x9d0
       page_cache_ra_order+0xb47/0xee0
       filemap_get_pages+0x4a9/0x1ec0
       filemap_read+0x426/0x11e0
       vfs_read+0x595/0xa80
       ksys_read+0x150/0x270
       do_syscall_64+0x174/0x580
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (mapping.invalidate_lock#10){++++}-{4:4}:
       __lock_acquire+0x1520/0x2cf0
       lock_acquire+0x106/0x350
       down_read+0x4a/0x330
       filemap_fault+0x6d7/0x13b0
       __do_fault+0x138/0x2a0
       do_pte_missing+0x2215/0x34b0
       handle_mm_fault+0x1b36/0x3080
       do_user_addr_fault+0xa4d/0x1340
       exc_page_fault+0x6a/0xc0
       asm_exc_page_fault+0x26/0x30

other info that might help us debug this:

Chain exists of:
  mapping.invalidate_lock#10 --> &mm->mmap_lock --> vm_lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  rlock(vm_lock);
                               lock(&mm->mmap_lock);
                               lock(vm_lock);
  rlock(mapping.invalidate_lock#10);

 *** DEADLOCK ***

1 lock held by syz.7.3917/30284:
 #0: ffff8881761a9e88 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500

stack backtrace:
CPU: 1 UID: 0 PID: 30284 Comm: syz.7.3917 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+0x1520/0x2cf0
 lock_acquire+0x106/0x350
 down_read+0x4a/0x330
 filemap_fault+0x6d7/0x13b0
 __do_fault+0x138/0x2a0
 do_pte_missing+0x2215/0x34b0
 handle_mm_fault+0x1b36/0x3080
 do_user_addr_fault+0xa4d/0x1340
 exc_page_fault+0x6a/0xc0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7f97df859bd5
Code: 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 49 39 f0 0f 84 22 07 00 00 48 83 c6 01 48 89 b4 24 38 01 00 00 <41> 0f b6 44 32 ff 48 d3 e0 83 c1 08 89 8c 24 44 01 00 00 48 09 c2
RSP: 002b:00007f97e094b4c0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000000000f02 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000f02 R09: 0000000000000008
R10: 0000200000001e82 R11: 0000000000000246 R12: 0000000000000005
R13: 00007f97e094bee0 R14: 00007f97e094bea0 R15: 00007f97d5600000
 </TASK>
