ntfs3(loop6): Failed to load $Extend (-22).
ntfs3(loop6): Failed to initialize $Extend.
======================================================
WARNING: possible circular locking dependency detected
6.13.0-rc2-syzkaller-00130-g150b567e0d57 #0 Not tainted
------------------------------------------------------
syz.6.239/7977 is trying to acquire lock:
ffff88805ab63700 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
ffff88805ab63700 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: ntfs_file_mmap+0x5bc/0x850 fs/ntfs3/file.c:379

but task is already holding lock:
ffff88807e12ea60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
ffff88807e12ea60 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x17c/0x3d0 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
       gup_fast_fallback+0x25f/0x29c0 mm/gup.c:3416
       pin_user_pages_fast+0xcc/0x160 mm/gup.c:3540
       iov_iter_extract_user_pages lib/iov_iter.c:1844 [inline]
       iov_iter_extract_pages+0x3bb/0x5c0 lib/iov_iter.c:1907
       dio_refill_pages fs/direct-io.c:172 [inline]
       dio_get_page fs/direct-io.c:213 [inline]
       do_direct_IO fs/direct-io.c:915 [inline]
       __blockdev_direct_IO+0x1443/0x4890 fs/direct-io.c:1243
       blockdev_direct_IO include/linux/fs.h:3313 [inline]
       ntfs_direct_IO+0x194/0x370 fs/ntfs3/inode.c:806
       generic_file_read_iter+0x341/0x550 mm/filemap.c:2811
       do_iter_readv_writev+0x600/0x880
       vfs_readv+0x2b3/0xa80 fs/read_write.c:1011
       do_preadv fs/read_write.c:1125 [inline]
       __do_sys_preadv2 fs/read_write.c:1184 [inline]
       __se_sys_preadv2+0x196/0x2b0 fs/read_write.c:1175
       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#22){+.+.}-{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:818 [inline]
       ntfs_file_mmap+0x5bc/0x850 fs/ntfs3/file.c:379
       call_mmap include/linux/fs.h:2183 [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:1348
       do_mmap+0x8f0/0x1000 mm/mmap.c:496
       vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:580
       ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542
       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#22);
                               lock(&mm->mmap_lock);
  lock(&sb->s_type->i_mutex_key#22);

 *** DEADLOCK ***

1 lock held by syz.6.239/7977:
 #0: ffff88807e12ea60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
 #0: ffff88807e12ea60 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x17c/0x3d0 mm/util.c:578

stack backtrace:
CPU: 1 UID: 0 PID: 7977 Comm: syz.6.239 Not tainted 6.13.0-rc2-syzkaller-00130-g150b567e0d57 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
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:818 [inline]
 ntfs_file_mmap+0x5bc/0x850 fs/ntfs3/file.c:379
 call_mmap include/linux/fs.h:2183 [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:1348
 do_mmap+0x8f0/0x1000 mm/mmap.c:496
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:580
 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542
 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: 0033:0x7f95b9385d19
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:00007f95ba256038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f95b9575fa0 RCX: 00007f95b9385d19
RDX: 8088e3ad122bc192 RSI: 0000000000600000 RDI: 0000000020000000
RBP: 00007f95b9401a20 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000004002011 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f95b9575fa0 R15: 00007ffd27cc9f48
 </TASK>