ntfs3(loop8): Different NTFS sector size (1024) and media sector size (512).
ntfs3(loop8): Mark volume as dirty due to NTFS errors
ntfs3(loop8): Failed to load $Extend (-22).
ntfs3(loop8): Failed to initialize $Extend.
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.8.428/12205 is trying to acquire lock:
ffff888049b8afb0 (&ni->file.run_lock#2){++++}-{4:4}, at: run_unpack_ex+0x7e5/0xba0 fs/ntfs3/run.c:1124

but task is already holding lock:
ffff888039d86250 (&wnd->rw_lock){++++}-{4:4}, at: run_unpack_ex+0x701/0xba0 fs/ntfs3/run.c:1105

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (&wnd->rw_lock){++++}-{4:4}:
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_write_nested+0x3e/0x60 kernel/locking/rwsem.c:1706
       mark_as_free_ex+0x3e/0x390 fs/ntfs3/fsntfs.c:2464
       run_deallocate_ex+0x187/0x2f0 fs/ntfs3/attrib.c:122
       attr_collapse_range+0xc36/0x1730 fs/ntfs3/attrib.c:1972
       ntfs_fallocate+0x7dc/0x10b0 fs/ntfs3/file.c:645
       vfs_fallocate+0x672/0x7f0 fs/open.c:342
       ksys_fallocate fs/open.c:366 [inline]
       __do_sys_fallocate fs/open.c:371 [inline]
       __se_sys_fallocate fs/open.c:369 [inline]
       __x64_sys_fallocate+0xc0/0x110 fs/open.c:369
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (&ni->file.run_lock#2){++++}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
       __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
       down_read+0x97/0x1f0 kernel/locking/rwsem.c:1537
       run_unpack_ex+0x7e5/0xba0 fs/ntfs3/run.c:1124
       ntfs_read_mft fs/ntfs3/inode.c:401 [inline]
       ntfs_iget5+0x232b/0x37e0 fs/ntfs3/inode.c:541
       ntfs_dir_emit fs/ntfs3/dir.c:337 [inline]
       ntfs_read_hdr+0x7cf/0xc30 fs/ntfs3/dir.c:385
       ntfs_readdir+0xa5f/0xdd0 fs/ntfs3/dir.c:496
       iterate_dir+0x3a5/0x580 fs/readdir.c:108
       __do_sys_getdents64 fs/readdir.c:410 [inline]
       __se_sys_getdents64+0xe4/0x260 fs/readdir.c:396
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&wnd->rw_lock);
                               lock(&ni->file.run_lock#2);
                               lock(&wnd->rw_lock);
  rlock(&ni->file.run_lock#2);

 *** DEADLOCK ***

3 locks held by syz.8.428/12205:
 #0: ffff8880330afd28 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x253/0x320 fs/file.c:1232
 #1: ffff888049b8f6f8 (&type->i_mutex_dir_key#9){++++}-{4:4}, at: iterate_dir+0x29e/0x580 fs/readdir.c:101
 #2: ffff888039d86250 (&wnd->rw_lock){++++}-{4:4}, at: run_unpack_ex+0x701/0xba0 fs/ntfs3/run.c:1105

stack backtrace:
CPU: 1 UID: 0 PID: 12205 Comm: syz.8.428 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043
 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 down_read+0x97/0x1f0 kernel/locking/rwsem.c:1537
 run_unpack_ex+0x7e5/0xba0 fs/ntfs3/run.c:1124
 ntfs_read_mft fs/ntfs3/inode.c:401 [inline]
 ntfs_iget5+0x232b/0x37e0 fs/ntfs3/inode.c:541
 ntfs_dir_emit fs/ntfs3/dir.c:337 [inline]
 ntfs_read_hdr+0x7cf/0xc30 fs/ntfs3/dir.c:385
 ntfs_readdir+0xa5f/0xdd0 fs/ntfs3/dir.c:496
 iterate_dir+0x3a5/0x580 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:410 [inline]
 __se_sys_getdents64+0xe4/0x260 fs/readdir.c:396
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe5cc08eec9
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:00007fe5ca2f6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fe5cc2e5fa0 RCX: 00007fe5cc08eec9
RDX: 0000000000001009 RSI: 0000200000004180 RDI: 0000000000000004
RBP: 00007fe5cc111f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe5cc2e6038 R14: 00007fe5cc2e5fa0 R15: 00007ffebd1ade08
 </TASK>