======================================================
WARNING: possible circular locking dependency detected
6.13.0-rc1-next-20241205-syzkaller #0 Not tainted
------------------------------------------------------
syz.4.138/6550 is trying to acquire lock:
ffff88805f0b1248 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:830 [inline]
ffff88805f0b1248 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: ntfs_file_mmap+0x5bc/0x850 fs/ntfs3/file.c:379

but task is already holding lock:
ffff8880612c81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:152 [inline]
ffff8880612c81e0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x182/0x430 mm/util.c:578

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&mm->mmap_lock){++++}-{4:4}:
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       down_read_killable+0xca/0xd30 kernel/locking/rwsem.c:1547
       mmap_read_lock_killable+0x1d/0x70 include/linux/mmap_lock.h:199
       get_mmap_lock_carefully mm/memory.c:6229 [inline]
       lock_mm_and_find_vma+0x29c/0x2f0 mm/memory.c:6280
       do_user_addr_fault arch/x86/mm/fault.c:1361 [inline]
       handle_page_fault arch/x86/mm/fault.c:1481 [inline]
       exc_page_fault+0x1bf/0x8b0 arch/x86/mm/fault.c:1539
       asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
       fault_in_readable+0x173/0x2d0
       fault_in_iov_iter_readable+0x229/0x280 lib/iov_iter.c:94
       ntfs_compress_write+0x110b/0x2170 fs/ntfs3/file.c:1095
       ntfs_file_write_iter+0x4c4/0x7a0 fs/ntfs3/file.c:1266
       new_sync_write fs/read_write.c:586 [inline]
       vfs_write+0xaeb/0xd30 fs/read_write.c:679
       ksys_write+0x18f/0x2b0 fs/read_write.c:731
       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

-> #0 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3161 [inline]
       check_prevs_add kernel/locking/lockdep.c:3280 [inline]
       validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
       __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       down_write+0x99/0x220 kernel/locking/rwsem.c:1577
       inode_lock include/linux/fs.h:830 [inline]
       ntfs_file_mmap+0x5bc/0x850 fs/ntfs3/file.c:379
       call_mmap include/linux/fs.h:2195 [inline]
       mmap_file mm/internal.h:124 [inline]
       __mmap_new_file_vma mm/vma.c:2291 [inline]
       __mmap_new_vma mm/vma.c:2355 [inline]
       __mmap_region+0x2204/0x2cd0 mm/vma.c:2456
       mmap_region+0x226/0x2c0 mm/mmap.c:1037
       do_mmap+0x97a/0x10d0 mm/mmap.c:499
       vm_mmap_pgoff+0x214/0x430 mm/util.c:580
       ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:545
       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

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&mm->mmap_lock);
                               lock(&sb->s_type->i_mutex_key#25);
                               lock(&mm->mmap_lock);
  lock(&sb->s_type->i_mutex_key#25);

 *** DEADLOCK ***

1 lock held by syz.4.138/6550:
 #0: ffff8880612c81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:152 [inline]
 #0: ffff8880612c81e0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x182/0x430 mm/util.c:578

stack backtrace:
CPU: 0 UID: 0 PID: 6550 Comm: syz.4.138 Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074
 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206
 check_prev_add kernel/locking/lockdep.c:3161 [inline]
 check_prevs_add kernel/locking/lockdep.c:3280 [inline]
 validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 down_write+0x99/0x220 kernel/locking/rwsem.c:1577
 inode_lock include/linux/fs.h:830 [inline]
 ntfs_file_mmap+0x5bc/0x850 fs/ntfs3/file.c:379
 call_mmap include/linux/fs.h:2195 [inline]
 mmap_file mm/internal.h:124 [inline]
 __mmap_new_file_vma mm/vma.c:2291 [inline]
 __mmap_new_vma mm/vma.c:2355 [inline]
 __mmap_region+0x2204/0x2cd0 mm/vma.c:2456
 mmap_region+0x226/0x2c0 mm/mmap.c:1037
 do_mmap+0x97a/0x10d0 mm/mmap.c:499
 vm_mmap_pgoff+0x214/0x430 mm/util.c:580
 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:545
 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: 0033:0x7f4430f7ff19
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:00007f4431d71058 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f4431145fa0 RCX: 00007f4430f7ff19
RDX: 0000000000000002 RSI: 0000000000001000 RDI: 0000000020001000
RBP: 00007f4430ff3cc8 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4431145fa0 R15: 00007ffe698d2a38
 </TASK>