usb 1-1: Manufacturer: syz
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted syzkaller #0 ff996278633adec6fd25d1632b496761701c4fe9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:logi_dj_probe+0xb68/0xf20 drivers/hid/hid-logitech-dj.c:1803
Code: 16 62 fd 49 83 c6 40 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 86 d3 bb fd 4d 8b 36 49 83 c6 28 4c 89 f0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 ba 02 00 00 41 8b 0e 48 8b 7d d0 48 81 c7
RSP: 0018:ffffc900000a6b80 EFLAGS: 00010206
RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffff8881026562c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000a6bd8 R08: ffff8881026562c0 R09: 0000000000000007
R10: 0000000000000006 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff867e8490 R14: 0000000000000028 R15: ffff888104bbc000
FS:  0000000000000000(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e4fc78fb48 CR3: 0000000105b92000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 __hid_device_probe drivers/hid/hid-core.c:2760 [inline]
 hid_device_probe+0x2c8/0x690 drivers/hid/hid-core.c:2799
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x2e1/0x8b0 drivers/base/dd.c:657
 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799
 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829
 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957
 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	fd                   	std
   1:	49 83 c6 40          	add    $0x40,%r14
   5:	4c 89 f0             	mov    %r14,%rax
   8:	48 c1 e8 03          	shr    $0x3,%rax
   c:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  10:	74 08                	je     0x1a
  12:	4c 89 f7             	mov    %r14,%rdi
  15:	e8 86 d3 bb fd       	call   0xfdbbd3a0
  1a:	4d 8b 36             	mov    (%r14),%r14
  1d:	49 83 c6 28          	add    $0x28,%r14
  21:	4c 89 f0             	mov    %r14,%rax
  24:	48 c1 e8 03          	shr    $0x3,%rax
* 28:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax <-- trapping instruction
  2c:	84 c0                	test   %al,%al
  2e:	0f 85 ba 02 00 00    	jne    0x2ee
  34:	41 8b 0e             	mov    (%r14),%ecx
  37:	48 8b 7d d0          	mov    -0x30(%rbp),%rdi
  3b:	48                   	rex.W
  3c:	81                   	.byte 0x81
  3d:	c7                   	.byte 0xc7