comedi comedi3: c6xdigio: I/O port conflict (0x2,3)
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000031: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000188-0x000000000000018f]
CPU: 0 UID: 0 PID: 21312 Comm: syz.2.2979 Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #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:kasan_byte_accessible+0x12/0x30
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc9000325f8a0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff8b7a6bc6 RCX: b38fe6ca7bcb3e00
RDX: 0000000000000000 RSI: ffffffff8b7a6bc6 RDI: 0000000000000031
RBP: ffffffff825da12d R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1020006f83 R12: 0000000000000000
R13: 0000000000000188 R14: 0000000000000188 R15: 0000000000000001
FS:  00007fcc42bf66c0(0000) GS:ffff8880b8624000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c351fdb CR3: 000000003da14000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __kasan_check_byte+0x12/0x40
 lock_acquire+0x8d/0x360
 down_write+0x96/0x1f0
 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: 0033:0x7fcc4498ebe9
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:00007fcc42bf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcc44bb5fa0 RCX: 00007fcc4498ebe9
RDX: 00002000000000c0 RSI: 0000000040946400 RDI: 0000000000000003
RBP: 00007fcc44a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcc44bb6038 R14: 00007fcc44bb5fa0 R15: 00007ffdd7b192e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x30
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc9000325f8a0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff8b7a6bc6 RCX: b38fe6ca7bcb3e00
RDX: 0000000000000000 RSI: ffffffff8b7a6bc6 RDI: 0000000000000031
RBP: ffffffff825da12d R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1020006f83 R12: 0000000000000000
R13: 0000000000000188 R14: 0000000000000188 R15: 0000000000000001
FS:  00007fcc42bf66c0(0000) GS:ffff8881a3c24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcc449733e0 CR3: 000000003da14000 CR4: 00000000000006f0
