comedi comedi1: c6xdigio: I/O port conflict (0x401,3)
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Unexpected driver unregister!
WARNING: CPU: 0 PID: 30919 at drivers/base/driver.c:273 driver_unregister+0x94/0xb0
Modules linked in:
CPU: 0 UID: 0 PID: 30919 Comm: syz.6.9473 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: 35 5d fc 48 89 df 5b 41 5e 41 5f e9 56 55 ff ff e8 b1 36 be fb eb 05 e8 aa 36 be fb 90 48 c7 c7 00 03 0a 8c e8 6d d3 81 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:ffffc900035afa40 EFLAGS: 00010246
RAX: c935666701547800 RBX: ffffffff8f3f7300 RCX: 0000000000080000
RDX: ffffc9002bce6000 RSI: 000000000000105c RDI: 000000000000105d
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa22c R12: ffff88802061b038
R13: ffffffff8f3f7250 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f2f765f66c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f81bff8 CR3: 0000000042190000 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: 0033:0x7f2f7838ec29
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:00007f2f765f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2f785d6090 RCX: 00007f2f7838ec29
RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000003
RBP: 00007f2f78411e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2f785d6128 R14: 00007f2f785d6090 R15: 00007ffde857eb98
 </TASK>
