Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
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, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0
user pgtable: 4k pages, 52-bit VAs, pgdp=0000000043ec1800
[0000000000000000] pgd=0800000049b2f403, p4d=080000007594a403, pud=0800000076360403, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 22870 Comm: syz.0.6962 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: linux,dummy-virt (DT)
pstate: 81402009 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : dummy_udc_start+0x2c/0x9c drivers/usb/gadget/udc/dummy_hcd.c:1022
lr : usb_gadget_udc_start_locked drivers/usb/gadget/udc/core.c:1237 [inline]
lr : gadget_bind_driver+0x140/0x284 drivers/usb/gadget/udc/core.c:1667
sp : ffff800084a03b30
x29: ffff800084a03b30 x28: f9f0000005bb3300 x27: 0000000000000000
x26: 0000000000000000 x25: f3f00000050fd768 x24: f0f000000c569058
x23: f5f0000004a3abc8 x22: ffff800082eabc88 x21: f0f000000c569010
x20: f0f000000c569010 x19: f3f00000050fd400 x18: 00000000ffffffff
x17: 0000000000000000 x16: 0000000000000000 x15: ffff800084a03cea
x14: ffff800084a03a20 x13: ffff800084a03d28 x12: 0000000080000000
x11: 0000000000000000 x10: 0fffffffffffffff x9 : 0000000000000000
x8 : 00000000ffff8000 x7 : dead000000000122 x6 : f9f0000005bb3300
x5 : 0000000000000001 x4 : f7f0000035e9e110 x3 : 0000000000000000
x2 : ffff8000811fabe4 x1 : 0000000000000002 x0 : 0000000000000000
Call trace:
 dummy_udc_start+0x2c/0x9c drivers/usb/gadget/udc/dummy_hcd.c:1024 (P)
 usb_gadget_udc_start_locked drivers/usb/gadget/udc/core.c:1237 [inline]
 gadget_bind_driver+0x140/0x284 drivers/usb/gadget/udc/core.c:1667
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0xbc/0x2bc drivers/base/dd.c:706
 __driver_probe_device+0x118/0x16c drivers/base/dd.c:868
 driver_probe_device+0x3c/0x120 drivers/base/dd.c:898
 __driver_attach+0x90/0x180 drivers/base/dd.c:1292
 bus_for_each_dev+0x7c/0xdc drivers/base/bus.c:383
 driver_attach+0x24/0x30 drivers/base/dd.c:1310
 bus_add_driver+0xe4/0x208 drivers/base/bus.c:763
 driver_register+0x68/0x130 drivers/base/driver.c:174
 usb_gadget_register_driver_owner+0x54/0xfc drivers/usb/gadget/udc/core.c:1752
 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:596 [inline]
 raw_ioctl+0x728/0xd38 drivers/usb/gadget/legacy/raw_gadget.c:1307
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __arm64_sys_ioctl+0xac/0x104 fs/ioctl.c:583
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x1c/0x34 arch/arm64/kernel/syscall.c:140
 el0_svc+0x38/0x1fc arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0xa0/0xf0 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:594
Code: 7100143f 54000220 f9482000 51000421 (f9400013) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	7100143f 	cmp	w1, #0x5
   4:	54000220 	b.eq	0x48  // b.none
   8:	f9482000 	ldr	x0, [x0, #4160]
   c:	51000421 	sub	w1, w1, #0x1
* 10:	f9400013 	ldr	x19, [x0] <-- trapping instruction