Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000006: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0xdead4ead00000030-0xdead4ead00000037]
CPU: 0 UID: 0 PID: 12439 Comm: syz.2.1337 Not tainted 6.16.0-rc6-syzkaller-00281-gf4a40a4282f4 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:kernfs_root+0x67/0x2a0 fs/kernfs/kernfs-internal.h:76
Code: 89 c6 e8 2c 2c 5c ff 58 85 db 0f 85 b7 00 00 00 e8 de 30 5c ff 48 8d 7d 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1a 02 00 00 48 8b 5d 30 e8 d6 b9 26 09 31 ff 41
RSP: 0018:ffffc90004d179b8 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90012037000
RDX: 1bd5a9d5a0000006 RSI: ffffffff825fb7d2 RDI: dead4ead00000030
RBP: dead4ead00000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8c41c380
R13: 0000000000000000 R14: ffffed102986a038 R15: ffff88814c350000
FS:  00007f5ddbe226c0(0000) GS:ffff888124720000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000625ab000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kernfs_remove_by_name_ns+0x2e/0x110 fs/kernfs/dir.c:1711
 sysfs_remove_file include/linux/sysfs.h:777 [inline]
 driver_remove_file drivers/base/driver.c:201 [inline]
 driver_remove_file+0x4a/0x60 drivers/base/driver.c:197
 remove_bind_files drivers/base/bus.c:605 [inline]
 bus_remove_driver+0x224/0x2c0 drivers/base/bus.c:743
 driver_unregister+0x76/0xb0 drivers/base/driver.c:277
 comedi_device_detach+0x13d/0x9e0 drivers/comedi/drivers.c:207
 do_devconfig_ioctl+0x46c/0x580 drivers/comedi/comedi_fops.c:833
 comedi_unlocked_ioctl+0x15bb/0x2e90 drivers/comedi/comedi_fops.c:2136
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5ddaf8e9a9
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:00007f5ddbe22038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5ddb1b6240 RCX: 00007f5ddaf8e9a9
RDX: 0000000000000000 RSI: 0000000040946400 RDI: 000000000000000b
RBP: 00007f5ddb010d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5ddb1b6240 R15: 00007ffe4bba9f28
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kernfs_root+0x67/0x2a0 fs/kernfs/kernfs-internal.h:76
Code: 89 c6 e8 2c 2c 5c ff 58 85 db 0f 85 b7 00 00 00 e8 de 30 5c ff 48 8d 7d 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1a 02 00 00 48 8b 5d 30 e8 d6 b9 26 09 31 ff 41
RSP: 0018:ffffc90004d179b8 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90012037000
RDX: 1bd5a9d5a0000006 RSI: ffffffff825fb7d2 RDI: dead4ead00000030
RBP: dead4ead00000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8c41c380
R13: 0000000000000000 R14: ffffed102986a038 R15: ffff88814c350000
FS:  00007f5ddbe226c0(0000) GS:ffff888124720000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000625ab000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	89 c6                	mov    %eax,%esi
   2:	e8 2c 2c 5c ff       	call   0xff5c2c33
   7:	58                   	pop    %rax
   8:	85 db                	test   %ebx,%ebx
   a:	0f 85 b7 00 00 00    	jne    0xc7
  10:	e8 de 30 5c ff       	call   0xff5c30f3
  15:	48 8d 7d 30          	lea    0x30(%rbp),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 1a 02 00 00    	jne    0x24e
  34:	48 8b 5d 30          	mov    0x30(%rbp),%rbx
  38:	e8 d6 b9 26 09       	call   0x926ba13
  3d:	31 ff                	xor    %edi,%edi
  3f:	41                   	rex.B