comedi comedi3: c6xdigio: I/O port conflict (0x5c8a8144,3)
BUG: unable to handle page fault for address: ffffffff8b35d228
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD df3b067 P4D df3b067 PUD df3c063 PMD b2001a1 
Oops: Oops: 0003 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 28452 Comm: syz.1.2104 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:down_write+0xd1/0x1f0
Code: 24 20 00 00 00 00 48 89 df be 08 00 00 00 e8 d6 cb a7 f6 4c 89 f7 be 08 00 00 00 e8 c9 cb a7 f6 48 8b 44 24 20 b9 01 00 00 00 <f0> 48 0f b1 0b 0f 85 c2 00 00 00 48 c7 c0 70 b4 a3 8f 48 c1 e8 03
RSP: 0018:ffffc90002a9f960 EFLAGS: 00010256
RAX: 0000000000000000 RBX: ffffffff8b35d228 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90002a9f980
RBP: ffffc90002a9f9e0 R08: ffffc90002a9f987 R09: 1ffff92000553f30
R10: dffffc0000000000 R11: fffff52000553f31 R12: 1ffff92000553f2c
R13: dffffc0000000000 R14: ffffc90002a9f980 R15: dffffc0000000000
FS:  00007f22e2fbf6c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff8b35d228 CR3: 000000010f126000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 kernfs_remove_by_name_ns+0x3d/0x130
 bus_remove_driver+0x198/0x2f0
 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: 0033:0x7f22e218ebe9
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:00007f22e2fbf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f22e23b5fa0 RCX: 00007f22e218ebe9
RDX: 0000200000000080 RSI: 0000000040946400 RDI: 0000000000000008
RBP: 00007f22e2211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f22e23b6038 R14: 00007f22e23b5fa0 R15: 00007ffd4063d1d8
 </TASK>
Modules linked in:
CR2: ffffffff8b35d228
---[ end trace 0000000000000000 ]---
RIP: 0010:down_write+0xd1/0x1f0
Code: 24 20 00 00 00 00 48 89 df be 08 00 00 00 e8 d6 cb a7 f6 4c 89 f7 be 08 00 00 00 e8 c9 cb a7 f6 48 8b 44 24 20 b9 01 00 00 00 <f0> 48 0f b1 0b 0f 85 c2 00 00 00 48 c7 c0 70 b4 a3 8f 48 c1 e8 03
RSP: 0018:ffffc90002a9f960 EFLAGS: 00010256
RAX: 0000000000000000 RBX: ffffffff8b35d228 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90002a9f980
RBP: ffffc90002a9f9e0 R08: ffffc90002a9f987 R09: 1ffff92000553f30
R10: dffffc0000000000 R11: fffff52000553f31 R12: 1ffff92000553f2c
R13: dffffc0000000000 R14: ffffc90002a9f980 R15: dffffc0000000000
FS:  00007f22e2fbf6c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff8b35d228 CR3: 000000010f126000 CR4: 00000000000006f0
