INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 4430 Comm: syz.4.5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
 assign_lock_key+0x1f5/0x230 kernel/locking/lockdep.c:974
 register_lock_class+0x20e/0x860 kernel/locking/lockdep.c:1287
 __lock_acquire+0x160/0x7c50 kernel/locking/lockdep.c:4928
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 down_write+0x36/0x60 kernel/locking/rwsem.c:1573
 ntfs_set_size+0x13c/0x1f0 fs/ntfs3/inode.c:845
 ntfs_extend+0x15c/0x510 fs/ntfs3/file.c:353
 ntfs3_setattr+0x2fa/0xc00 fs/ntfs3/file.c:712
 notify_change+0xc74/0xf40 fs/attr.c:499
 do_truncate+0x197/0x220 fs/open.c:65
 vfs_truncate+0x262/0x2f0 fs/open.c:111
 do_sys_truncate+0xdc/0x190 fs/open.c:134
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe2d198f749
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:00007fe2cfbb4038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fe2d1be6180 RCX: 00007fe2d198f749
RDX: 0000000000000000 RSI: 0000000000000f62 RDI: 0000200000000080
RBP: 00007fe2d1a13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe2d1be6218 R14: 00007fe2d1be6180 R15: 00007fff9725af98
 </TASK>
ntfs3: loop4: ino=19, "file1" attr_set_size
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(sem->magic != sem): count = 0x1, magic = 0x0, owner = 0xffff88807ba78000, curr 0xffff88807ba78000, list not empty
WARNING: CPU: 1 PID: 4430 at kernel/locking/rwsem.c:1366 __up_write kernel/locking/rwsem.c:1366 [inline]
WARNING: CPU: 1 PID: 4430 at kernel/locking/rwsem.c:1366 up_write+0x2d6/0x420 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 1 PID: 4430 Comm: syz.4.5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__up_write kernel/locking/rwsem.c:1366 [inline]
RIP: 0010:up_write+0x2d6/0x420 kernel/locking/rwsem.c:1626
Code: 48 c7 c7 80 f9 6b 8a 48 c7 c6 20 fb 6b 8a 48 8b 54 24 08 48 8b 0c 24 4c 8b 44 24 10 4d 89 e1 41 52 e8 7e 84 ea ff 48 83 c4 08 <0f> 0b e9 9d fd ff ff 0f 0b e9 86 fe ff ff c6 05 0c 30 88 0c 01 48
RSP: 0018:ffffc900042c7a60 EFLAGS: 00010296
RAX: 4c3343f5629b5c00 RBX: ffff888053dbefe0 RCX: 0000000000080000
RDX: ffffc90011e36000 RSI: 000000000006ef6a RDI: 000000000006ef6b
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffff52000858edd
R10: fffff52000858edd R11: 1ffff92000858edc R12: ffff88807ba78000
R13: ffff888053dbf048 R14: 1ffff1100a7b7e09 R15: ffff888053dbf038
FS:  00007fe2cfbb46c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe2c7813c00 CR3: 0000000028552000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ntfs_set_size+0x16e/0x1f0 fs/ntfs3/inode.c:850
 ntfs_extend+0x15c/0x510 fs/ntfs3/file.c:353
 ntfs3_setattr+0x2fa/0xc00 fs/ntfs3/file.c:712
 notify_change+0xc74/0xf40 fs/attr.c:499
 do_truncate+0x197/0x220 fs/open.c:65
 vfs_truncate+0x262/0x2f0 fs/open.c:111
 do_sys_truncate+0xdc/0x190 fs/open.c:134
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe2d198f749
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:00007fe2cfbb4038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fe2d1be6180 RCX: 00007fe2d198f749
RDX: 0000000000000000 RSI: 0000000000000f62 RDI: 0000200000000080
RBP: 00007fe2d1a13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe2d1be6218 R14: 00007fe2d1be6180 R15: 00007fff9725af98
 </TASK>