Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
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: 0 PID: 12584 Comm: syz.0.2530 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : dummy_udc_stop+0x84/0x130 drivers/usb/gadget/udc/dummy_hcd.c:1052
lr : gadget_to_dummy_hcd drivers/usb/gadget/udc/dummy_hcd.c:317 [inline]
lr : dummy_udc_stop+0x54/0x130 drivers/usb/gadget/udc/dummy_hcd.c:1051
sp : ffff800021d57640
x29: ffff800021d57640 x28: 1fffe0001a3a2201 x27: ffff0000d1d11008
x26: 1fffe0001a3a2200 x25: dfff800000000000 x24: 1fffe0001a3a2296
x23: ffff0000d1d114b1 x22: ffff800013120ff8 x21: dfff800000000000
x20: 0000000000000003 x19: 0000000000000000 x18: 1fffe00033e7037e
x17: ffff80001538d000 x16: ffff800011b9e758 x15: 0000000000000000
x14: 0000000000000001 x13: 1ffff000043aae84 x12: 0000000000000000
x11: ff0080000dcf0f2c x10: 0000000000000000 x9 : 0000000000000658
x8 : 0000000000000000 x7 : ffff80000dceb098 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082d44c8
x2 : ffff0000d5b85400 x1 : 0000000000000003 x0 : 0000000000000005
Call trace:
 dummy_udc_stop+0x84/0x130 drivers/usb/gadget/udc/dummy_hcd.c:1052
 usb_gadget_udc_stop_locked drivers/usb/gadget/udc/core.c:1255 [inline]
 gadget_unbind_driver+0x204/0x35c drivers/usb/gadget/udc/core.c:1705
 device_remove drivers/base/dd.c:547 [inline]
 __device_release_driver drivers/base/dd.c:1279 [inline]
 device_release_driver_internal+0x3d4/0x6e4 drivers/base/dd.c:1305
 driver_detach+0x1e8/0x2ac drivers/base/dd.c:1368
 bus_remove_driver+0x120/0x240 drivers/base/bus.c:679
 driver_unregister+0x78/0xac drivers/base/driver.c:274
 usb_gadget_unregister_driver+0x50/0x78 drivers/usb/gadget/udc/core.c:1762
 raw_release+0xc4/0x294 drivers/usb/gadget/legacy/raw_gadget.c:416
 __fput+0x1b4/0x7b0 fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x1f4/0x280 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0x54c/0x19ac kernel/exit.c:887
 do_group_exit+0x198/0x238 kernel/exit.c:1030
 get_signal+0x11f4/0x133c kernel/signal.c:2880
 do_signal arch/arm64/kernel/signal.c:1095 [inline]
 do_notify_resume+0x364/0x2c84 arch/arm64/kernel/signal.c:1148
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: aa1303e0 96b01128 f9400273 d343fe68 (38756908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1303e0 	mov	x0, x19
   4:	96b01128 	bl	0xfffffffffac044a4
   8:	f9400273 	ldr	x19, [x19]
   c:	d343fe68 	lsr	x8, x19, #3
* 10:	38756908 	ldrb	w8, [x8, x21] <-- trapping instruction