Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Mem abort info:
  ESR = 0x0000000096000006
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4479 Comm: syz.2.15 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+0x94/0x2f4 drivers/usb/gadget/udc/dummy_hcd.c:1034
lr : gadget_to_dummy_hcd drivers/usb/gadget/udc/dummy_hcd.c:316 [inline]
lr : dummy_udc_stop+0x64/0x2f4 drivers/usb/gadget/udc/dummy_hcd.c:1033
sp : ffff8000212f7860
x29: ffff8000212f7870 x28: 1fffe0001a3d3c01 x27: ffff0000d1e9e008
x26: 1fffe0001a3d3c00 x25: dfff800000000000 x24: 1fffe0001a3d3c96
x23: dfff800000000000 x22: ffff800013110b18 x21: ffff0000d0d3cc00
x20: 0000000000000003 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800011b90080 x15: ffff8000089b5c5c
x14: 0000000000000001 x13: 1ffff0000425eed0 x12: 0000000000080000
x11: ff0080000dceb890 x10: 0000000000000002 x9 : 0000000000000658
x8 : 0000000000000000 x7 : ffff80000dce59ec x6 : 0000000000000000
x2 : ffff0000d28b0000 x1 : 0000000000000003 x0 : 0000000000000005
Call trace:
 dummy_udc_stop+0x94/0x2f4 drivers/usb/gadget/udc/dummy_hcd.c:1034
 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
 usb_gadget_unregister_driver+0x50/0x78 drivers/usb/gadget/udc/core.c:1762
 unregister_gadget drivers/usb/gadget/configfs.c:253 [inline]
 gadget_dev_desc_UDC_store+0x124/0x268 drivers/usb/gadget/configfs.c:280
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x260/0x338 fs/configfs/file.c:229
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 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 96b0241f f9400273 d343fe68 (38776908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1303e0 	mov	x0, x19
   4:	96b0241f 	bl	0xfffffffffac09080
   8:	f9400273 	ldr	x19, [x19]
   c:	d343fe68 	lsr	x8, x19, #3
* 10:	38776908 	ldrb	w8, [x8, x23] <-- trapping instruction