syzbot

comedi comedi0: c6xdigio: I/O port conflict (0x7,3)
------------[ cut here ]------------
Unexpected driver unregister!
WARNING: CPU: 0 PID: 4399 at drivers/base/driver.c:263 driver_unregister+0x8e/0xa0 drivers/base/driver.c:263
Modules linked in:
CPU: 0 PID: 4399 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:driver_unregister+0x8e/0xa0 drivers/base/driver.c:263
Code: e8 37 22 22 fd 48 89 df 5b 41 5e 41 5f e9 ea 63 ff ff e8 c5 87 ae fc eb 05 e8 be 87 ae fc 48 c7 c7 80 85 7b 8a e8 12 45 d5 04 <0f> 0b 5b 41 5e 41 5f c3 00 00 cc cc 00 00 cc cc 00 00 41 57 41 56
RSP: 0018:ffffc900010ffa60 EFLAGS: 00010246
RAX: ae0615b286548d00 RBX: ffffffff8d12c600 RCX: ffff88807c31bb80
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed10172067b0
R10: ffffed10172067b0 R11: 1ffff110172067af R12: ffff88814c6c1838
R13: ffffffff8d12c550 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000555559dae500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055deedf9f950 CR3: 0000000022d35000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 comedi_device_detach_locked+0x16e/0x710 drivers/comedi/drivers.c:207
 comedi_device_detach drivers/comedi/drivers.c:215 [inline]
 comedi_device_attach+0x5c9/0x700 drivers/comedi/drivers.c:1011
 do_devconfig_ioctl drivers/comedi/comedi_fops.c:868 [inline]
 comedi_unlocked_ioctl+0x5a6/0x1050 drivers/comedi/comedi_fops.c:2173
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1d246ddfc9
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:00007ffdb0515068 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1d24934fa0 RCX: 00007f1d246ddfc9
RDX: 00002000000000c0 RSI: 0000000040946400 RDI: 0000000000000003
RBP: 00007f1d24760f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1d24934fa0 R14: 00007f1d24934fa0 R15: 0000000000000003
 </TASK>