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: 5133 Comm: syz.1.144 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 22400005 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : l2cap_unregister_user+0x34/0x18c net/bluetooth/l2cap_core.c:1893
lr : l2cap_unregister_user+0x30/0x18c net/bluetooth/l2cap_core.c:1892
sp : ffff8000217c77b0
x29: ffff8000217c77b0 x28: ffff0000f7113780 x27: 00000000000089f0
x26: dfff800000000000 x25: dfff800000000000 x24: ffff8000217c7840
x23: dfff800000000000 x22: dfff800000000000 x21: 0000000000000000
x20: 0000000000000000 x19: ffff0000f9390090 x18: ffff800011b9bf60
x17: 1fffe00033ea637e x16: ffff8000082d92bc x15: ffff80001521d000
x14: 0000000000000001 x13: 0000000000033768 x12: 0000000000ff0100
x11: ff00800010c97964 x10: 0000000000000003 x9 : ffff800010c97964
x8 : 0000000000000000 x7 : ffff800008257984 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff8000217c73a0 x1 : ffff0000f9390090 x0 : 0000000000000000
Call trace:
 l2cap_unregister_user+0x34/0x18c net/bluetooth/l2cap_core.c:1893
 hidp_connection_del+0xb0/0x14c net/bluetooth/hidp/core.c:1422
 do_hidp_sock_ioctl net/bluetooth/hidp/sock.c:97 [inline]
 hidp_sock_ioctl+0x60c/0xa70 net/bluetooth/hidp/sock.c:128
 sock_do_ioctl+0x100/0x258 net/socket.c:1201
 sock_ioctl+0x238/0x824 net/socket.c:1320
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 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: aa0003f4 f2fbfff7 97cd7691 d343fe88 (38776908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa0003f4 	mov	x20, x0
   4:	f2fbfff7 	movk	x23, #0xdfff, lsl #48
   8:	97cd7691 	bl	0xffffffffff35da4c
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	38776908 	ldrb	w8, [x8, x23] <-- trapping instruction