comedi comedi1: c6xdigio: I/O port conflict (0xffffffff80000000,3)
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Unexpected driver unregister!
WARNING: drivers/base/driver.c:273 at driver_unregister+0x94/0xb0 drivers/base/driver.c:273, CPU#1: syz.2.19/6024
Modules linked in:
CPU: 1 UID: 0 PID: 6024 Comm: syz.2.19 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 drivers/base/driver.c:273
Code: fc 59 fc 48 89 df 5b 41 5e 41 5f e9 56 55 ff ff e8 61 f7 b8 fb eb 05 e8 5a f7 b8 fb 90 48 c7 c7 a0 13 2a 8c e8 ed 6e 7c fb 90 <0f> 0b 90 90 5b 41 5e 41 5f e9 fe 08 80 05 cc cc cc cc cc cc cc cc
RSP: 0018:ffffc900030cfa20 EFLAGS: 00010246
RAX: f3b3fece18bbbc00 RBX: ffffffff8f6011c0 RCX: ffff888022480000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3a6c8 R12: ffff888021c8c838
R13: ffffffff8f601110 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f72c734f6c0(0000) GS:ffff8881a39e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f661fcce0d0 CR3: 0000000118cb2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 comedi_device_detach_locked+0x178/0x750 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:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 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: 0033:0x7f72c658eba9
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:00007f72c734f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f72c67d5fa0 RCX: 00007f72c658eba9
RDX: 00002000000002c0 RSI: 0000000040946400 RDI: 0000000000000003
RBP: 00007f72c6611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f72c67d6038 R14: 00007f72c67d5fa0 R15: 00007fff74b13638
 </TASK>
