usb 5-1: New USB device found, idVendor=0525, idProduct=a4a1, bcdDevice= 0.40
usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 5-1: Product: syz
usb 5-1: Manufacturer: syz
usb 5-1: SerialNumber: syz
Oops: general protection fault, probably for non-canonical address 0xdffffc00000000cf: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000678-0x000000000000067f]
CPU: 1 UID: 0 PID: 311 Comm: kworker/1:2 Not tainted syzkaller #0 60889c1c5e6bdc1f3cb1b6a230ba908545dccc71
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events wacom_wireless_work
RIP: 0010:wacom_release_resources drivers/hid/wacom_sys.c:2307 [inline]
RIP: 0010:wacom_wireless_work+0x1ba/0xb80 drivers/hid/wacom_sys.c:2504
Code: 89 f7 e8 39 bc af fd 49 8b 06 48 89 45 c0 48 8d 90 78 06 00 00 48 89 d0 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 48 89 45 b0 <42> 0f b6 04 30 84 c0 48 89 55 d0 0f 85 99 07 00 00 80 3a 00 4c 89
RSP: 0018:ffffc9000b77fbf0 EFLAGS: 00010206
RAX: 00000000000000cf RBX: ffff8881167b0438 RCX: dffffc0000000000
RDX: 0000000000000678 RSI: 0000000000000008 RDI: ffff8881167b0028
RBP: ffffc9000b77fc88 R08: ffff8881167b043f R09: 1ffff11022cf6087
R10: 0000000000000000 R11: ffffffff8430a2a0 R12: ffff88811659c000
R13: 1ffff110269bdc88 R14: dffffc0000000000 R15: ffff888134dee440
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c1c881d58 CR3: 0000000115fe8000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3273 [inline]
 process_scheduled_works+0x7f4/0x1060 kernel/workqueue.c:3354
 worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435
 kthread+0x2c4/0x360 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:wacom_release_resources drivers/hid/wacom_sys.c:2307 [inline]
RIP: 0010:wacom_wireless_work+0x1ba/0xb80 drivers/hid/wacom_sys.c:2504
Code: 89 f7 e8 39 bc af fd 49 8b 06 48 89 45 c0 48 8d 90 78 06 00 00 48 89 d0 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 48 89 45 b0 <42> 0f b6 04 30 84 c0 48 89 55 d0 0f 85 99 07 00 00 80 3a 00 4c 89
RSP: 0018:ffffc9000b77fbf0 EFLAGS: 00010206
RAX: 00000000000000cf RBX: ffff8881167b0438 RCX: dffffc0000000000
RDX: 0000000000000678 RSI: 0000000000000008 RDI: ffff8881167b0028
RBP: ffffc9000b77fc88 R08: ffff8881167b043f R09: 1ffff11022cf6087
R10: 0000000000000000 R11: ffffffff8430a2a0 R12: ffff88811659c000
R13: 1ffff110269bdc88 R14: dffffc0000000000 R15: ffff888134dee440
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559e013fee38 CR3: 0000000115fe8000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	89 f7                	mov    %esi,%edi
   2:	e8 39 bc af fd       	call   0xfdafbc40
   7:	49 8b 06             	mov    (%r14),%rax
   a:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
   e:	48 8d 90 78 06 00 00 	lea    0x678(%rax),%rdx
  15:	48 89 d0             	mov    %rdx,%rax
  18:	48 c1 e8 03          	shr    $0x3,%rax
  1c:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  23:	fc ff df
  26:	48 89 45 b0          	mov    %rax,-0x50(%rbp)
* 2a:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	48 89 55 d0          	mov    %rdx,-0x30(%rbp)
  35:	0f 85 99 07 00 00    	jne    0x7d4
  3b:	80 3a 00             	cmpb   $0x0,(%rdx)
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89