mcp2221 0003:04D8:00DD.0001: unknown main item tag 0x0
mcp2221 0003:04D8:00DD.0001: unknown main item tag 0x0
mcp2221 0003:04D8:00DD.0001: USB HID v0.00 Device [HID 04d8:00dd] on usb-dummy_hcd.0-1/input0
Unable to handle kernel paging request at virtual address dfff800000000000
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4162 Comm: kworker/1:23 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Workqueue: usb_hub_wq hub_event
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : mcp_smbus_xfer+0x64/0xd70 drivers/hid/hid-mcp2221.c:445
lr : mcp_smbus_xfer+0x44/0xd70 drivers/hid/hid-mcp2221.c:441
sp : ffff80001fe06340
x29: ffff80001fe06340 x28: 0000000000000000 x27: dfff800000000000
x26: ffff0000e56441b0 x25: ffff80000eed5d94 x24: 0000000000000000
x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000018
x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80001135f958 x15: 000000000004ffff
x14: 0000000000000003 x13: 1ffff00003fc0c28 x12: 0000000000000000
x11: ff8080000eed5dd8 x10: 0000000000000000 x9 : ffff80000eed5dd8
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000018 x0 : ffff0000e5644088
Call trace:
 mcp_smbus_xfer+0x64/0xd70 drivers/hid/hid-mcp2221.c:445
 __i2c_smbus_xfer+0x57c/0x21fc drivers/i2c/i2c-core-smbus.c:590
 i2c_smbus_xfer+0x1f0/0x314 drivers/i2c/i2c-core-smbus.c:545
 i2c_default_probe+0x1cc/0x260 drivers/i2c/i2c-core-base.c:-1
 i2c_detect_address drivers/i2c/i2c-core-base.c:2493 [inline]
 i2c_detect drivers/i2c/i2c-core-base.c:2568 [inline]
 i2c_do_add_adapter+0x3ec/0x7f4 drivers/i2c/i2c-core-base.c:1423
 __process_new_adapter+0x28/0x3c drivers/i2c/i2c-core-base.c:1430
 bus_for_each_drv+0x154/0x1e4 drivers/base/bus.c:429
 i2c_register_adapter+0xfbc/0x1284 drivers/i2c/i2c-core-base.c:1604
 i2c_add_adapter+0x16c/0x24c drivers/i2c/i2c-core-base.c:-1
 mcp2221_probe+0x264/0x5f4 drivers/hid/hid-mcp2221.c:915
 hid_device_probe+0x234/0x32c drivers/hid/hid-core.c:2348
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26c/0xad8 drivers/base/dd.c:595
 __driver_probe_device+0x1c8/0x368 drivers/base/dd.c:775
 driver_probe_device+0x78/0x338 drivers/base/dd.c:805
 __device_attach_driver+0x270/0x4a4 drivers/base/dd.c:927
 bus_for_each_drv+0x154/0x1e4 drivers/base/bus.c:429
 __device_attach+0x2a4/0x3d8 drivers/base/dd.c:999
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1048
 bus_probe_device+0xbc/0x1c4 drivers/base/bus.c:489
 device_add+0x93c/0xe4c drivers/base/core.c:3427
 hid_add_device+0x310/0x4d8 drivers/hid/hid-core.c:2500
 usbhid_probe+0x87c/0xbd0 drivers/hid/usbhid/hid-core.c:1442
 usb_probe_interface+0x50c/0x988 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26c/0xad8 drivers/base/dd.c:595
 __driver_probe_device+0x1c8/0x368 drivers/base/dd.c:775
 driver_probe_device+0x78/0x338 drivers/base/dd.c:805
 __device_attach_driver+0x270/0x4a4 drivers/base/dd.c:927
 bus_for_each_drv+0x154/0x1e4 drivers/base/bus.c:429
 __device_attach+0x2a4/0x3d8 drivers/base/dd.c:999
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1048
 bus_probe_device+0xbc/0x1c4 drivers/base/bus.c:489
 device_add+0x93c/0xe4c drivers/base/core.c:3427
 usb_set_configuration+0x15f8/0x1b94 drivers/usb/core/message.c:2223
 usb_generic_driver_probe+0x8c/0x148 drivers/usb/core/generic.c:238
 usb_probe_device+0x120/0x258 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26c/0xad8 drivers/base/dd.c:595
 __driver_probe_device+0x1c8/0x368 drivers/base/dd.c:775
 driver_probe_device+0x78/0x338 drivers/base/dd.c:805
 __device_attach_driver+0x270/0x4a4 drivers/base/dd.c:927
 bus_for_each_drv+0x154/0x1e4 drivers/base/bus.c:429
 __device_attach+0x2a4/0x3d8 drivers/base/dd.c:999
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1048
 bus_probe_device+0xbc/0x1c4 drivers/base/bus.c:489
 device_add+0x93c/0xe4c drivers/base/core.c:3427
 usb_new_device+0x7d8/0x1170 drivers/usb/core/hub.c:2632
 hub_port_connect drivers/usb/core/hub.c:5497 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5637 [inline]
 port_event drivers/usb/core/hub.c:5799 [inline]
 hub_event+0x21f8/0x4224 drivers/usb/core/hub.c:5881
 process_one_work+0x7a4/0x1178 kernel/workqueue.c:2310
 worker_thread+0x8fc/0x103c kernel/workqueue.c:2457
 kthread+0x37c/0x460 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:856
Code: aa1303e0 9665e8f1 f9400273 d343fe7c (387b6b88) 
---[ end trace 780fa910ed9d680a ]---
----------------
Code disassembly (best guess):
   0:	aa1303e0 	mov	x0, x19
   4:	9665e8f1 	bl	0xfffffffff997a3c8
   8:	f9400273 	ldr	x19, [x19]
   c:	d343fe7c 	lsr	x28, x19, #3
* 10:	387b6b88 	ldrb	w8, [x28, x27] <-- trapping instruction