comedi comedi1: c6xdigio: I/O port conflict (0x401,3)
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Unexpected driver unregister!
WARNING: CPU: 1 PID: 7247 at drivers/base/driver.c:273 driver_unregister+0x94/0xb0
Modules linked in:
CPU: 1 UID: 0 PID: 7247 Comm: syz.1.271 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:driver_unregister+0x94/0xb0
Code: 6a a0 fc 48 89 df 5b 41 5e 41 5f e9 56 55 ff ff e8 11 0b 01 fc eb 05 e8 0a 0b 01 fc 90 48 c7 c7 80 33 c5 8b e8 0d 95 c4 fb 90 <0f> 0b 90 90 5b 41 5e 41 5f c3 cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 0018:ffffc90003b0fa40 EFLAGS: 00010246
RAX: dc83e7ebee70b000 RBX: ffffffff8ef899e0 RCX: 0000000000080000
RDX: ffffc9000ad59000 RSI: 0000000000000faa RDI: 0000000000000fab
RBP: 0000000000000001 R08: ffff888136624293 R09: 1ffff11026cc4852
R10: dffffc0000000000 R11: ffffed1026cc4853 R12: ffff888020555838
R13: ffffffff8ef89930 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f9716ddd6c0(0000) GS:ffff8881a417e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000012c0 CR3: 0000000037fd6000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 comedi_device_detach_locked+0x178/0x750
 comedi_device_attach+0x5d4/0x720
 comedi_unlocked_ioctl+0x5ff/0x1020
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9715f8ec29
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:00007f9716ddd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f97161d6090 RCX: 00007f9715f8ec29
RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000005
RBP: 00007f9716011e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f97161d6128 R14: 00007f97161d6090 R15: 00007fffc819dfc8
 </TASK>
