Unable to handle kernel paging request at virtual address dfff80000000000c
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0
[dfff80000000000c] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7705 Comm: syz.5.611 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : dummy_queue+0x16c/0x748 drivers/usb/gadget/udc/dummy_hcd.c:737
lr : gadget_to_dummy_hcd drivers/usb/gadget/udc/dummy_hcd.c:318 [inline]
lr : dummy_queue+0x138/0x748 drivers/usb/gadget/udc/dummy_hcd.c:736
sp : ffff8000935673f0
x29: ffff800093567420 x28: ffff0000d3958600 x27: 1fffe0001956382a
x26: ffff0000cab1cc00 x25: dfff800000000000 x24: ffff0000cab1c150
x23: dfff800000000000 x22: 1fffe0001a72b0c0 x21: 0000000000000060
x20: ffff0000cab1c158 x19: ffff0000d3958610 x18: 00000000ffffffff
x17: ffff80008a791000 x16: 0000000000000004 x15: ffff800080c97634
x14: 00000000ffff8000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000080000 x9 : 00000000000006a8
x8 : 000000000000000c x7 : 0000000000000000 x6 : 000000000000003f
x5 : 00000000ffffffff x4 : 0000000000000820 x3 : ffff8000835ba074
x2 : 0000000000000003 x1 : ffff0000e18eba80 x0 : 0000000000000000
Call trace:
 dummy_queue+0x16c/0x748 drivers/usb/gadget/udc/dummy_hcd.c:737 (P)
 usb_ep_queue+0xe4/0x578 drivers/usb/gadget/udc/core.c:305
 gs_start_rx+0x220/0x468 drivers/usb/gadget/function/u_serial.c:336
 gs_start_io+0x120/0x1ec drivers/usb/gadget/function/u_serial.c:571
 gs_open+0x220/0x514 drivers/usb/gadget/function/u_serial.c:661
 tty_open+0x404/0x89c drivers/tty/tty_io.c:2137
 chrdev_open+0x398/0x3e8 fs/char_dev.c:411
 do_dentry_open+0x5c4/0xfc0 fs/open.c:947
 vfs_open+0x44/0x2dc fs/open.c:1052
 do_open fs/namei.c:4700 [inline]
 path_openat+0x21fc/0x2a60 fs/namei.c:4863
 do_file_open+0x1c8/0x2e8 fs/namei.c:4892
 do_sys_openat2+0x114/0x1e8 fs/open.c:1368
 do_sys_open+0xb0/0xe0 fs/open.c:1374
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __arm64_sys_openat+0xa8/0xc4 fs/open.c:1385
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
Code: 97578b6c f94002a8 91018115 d343fea8 (38f96908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97578b6c 	bl	0xfffffffffd5e2db0
   4:	f94002a8 	ldr	x8, [x21]
   8:	91018115 	add	x21, x8, #0x60
   c:	d343fea8 	lsr	x8, x21, #3
* 10:	38f96908 	ldrsb	w8, [x8, x25] <-- trapping instruction