comedi comedi1: c6xdigio: I/O port conflict (0x9e0,3)
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DEBUG_LOCKS_WARN_ON(1)
WARNING: kernel/locking/lockdep.c:238 at hlock_class kernel/locking/lockdep.c:238 [inline], CPU#1: syz.5.2909/23592
WARNING: kernel/locking/lockdep.c:238 at check_wait_context kernel/locking/lockdep.c:4854 [inline], CPU#1: syz.5.2909/23592
WARNING: kernel/locking/lockdep.c:238 at __lock_acquire+0x379/0xd20 kernel/locking/lockdep.c:5187, CPU#1: syz.5.2909/23592
Modules linked in:
CPU: 1 UID: 0 PID: 23592 Comm: syz.5.2909 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:hlock_class kernel/locking/lockdep.c:238 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline]
RIP: 0010:__lock_acquire+0x379/0xd20 kernel/locking/lockdep.c:5187
Code: eb 33 90 e8 f9 80 30 03 85 c0 74 22 83 3d f2 ad 46 0e 00 75 19 90 48 c7 c7 40 fc e8 8d 48 c7 c6 02 2e d8 8d e8 a8 e6 e5 ff 90 <0f> 0b 90 90 90 31 c0 48 8b 3c 24 0f b6 98 c4 00 00 00 41 8b 46 20
RSP: 0018:ffffc9000e6b7810 EFLAGS: 00010046
RAX: 73b91b564be5e500 RBX: ffffffff8b434268 RCX: ffff888029f65ac0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000001f53 R08: ffff8880b8724253 R09: 1ffff110170e484a
R10: dffffc0000000000 R11: ffffed10170e484b R12: 0000000000000000
R13: 0000000000000000 R14: ffff888029f66668 R15: ffff888029f665f0
FS:  00007ff45863b6c0(0000) GS:ffff8881258ba000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f12ceca3f50 CR3: 000000005354c000 CR4: 00000000003526f0
DR0: 0000000000000002 DR1: 0000000000000005 DR2: 8000000000000000
DR3: 1000000100000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590
 kernfs_remove_by_name_ns+0x3d/0x130 fs/kernfs/dir.c:1712
 remove_bind_files drivers/base/bus.c:605 [inline]
 bus_remove_driver+0x198/0x2f0 drivers/base/bus.c:743
 comedi_device_detach_locked+0x175/0x750 drivers/comedi/drivers.c:207
 comedi_device_detach drivers/comedi/drivers.c:215 [inline]
 comedi_device_attach+0x5d4/0x720 drivers/comedi/drivers.c:1011
 do_devconfig_ioctl drivers/comedi/comedi_fops.c:872 [inline]
 comedi_unlocked_ioctl+0x5ff/0x1020 drivers/comedi/comedi_fops.c:2178
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584
 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: 0033:0x7ff45778ebe9
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:00007ff45863b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff4579c5fa0 RCX: 00007ff45778ebe9
RDX: 0000200000000140 RSI: 0000000040946400 RDI: 000000000000000a
RBP: 00007ff457811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff4579c6038 R14: 00007ff4579c5fa0 R15: 00007ffe0d047638
 </TASK>