syzbot

Unable to handle kernel paging request at virtual address dfff80000000000e
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
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
[dfff80000000000e] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4242 Comm: kworker/u5:7 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Workqueue: hci3 hci_power_on
pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btintel_read_version+0x90/0x194 drivers/bluetooth/btintel.c:414
lr : btintel_read_version+0x3c/0x194 drivers/bluetooth/btintel.c:407
sp : ffff80001dda7420
x29: ffff80001dda7420 x28: ffff80001dda74c0 x27: ffff80001dda7640
x26: 0000000000000000 x25: ffff700003bb4e98 x24: ffff0000d7cc9fb8
x23: dfff800000000000 x22: ffff80001dda7620 x21: ffff0000d7cc8000
x20: ffff80001dda7620 x19: 0000000000000000 x18: ffff80001dd87480
x17: ffff8000188cc000 x16: ffff8000084f9258 x15: 0000000000000000
x14: 0000000000000002 x13: ffff0000d7c3d340 x12: 0000000000ff0100
x11: 0000000000ff0100 x10: 0000000000000003 x9 : 000000000000000e
x8 : 0000000000000070 x7 : ffff8000082db800 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000031 x0 : 0000000000000000
Call trace:
 btintel_read_version+0x90/0x194 drivers/bluetooth/btintel.c:414
 ag6xx_setup+0x1a4/0xd0c drivers/bluetooth/hci_ag6xx.c:169
 hci_uart_setup+0x330/0x7d8 drivers/bluetooth/hci_ldisc.c:423
 hci_dev_setup_sync net/bluetooth/hci_sync.c:4678 [inline]
 hci_dev_init_sync net/bluetooth/hci_sync.c:4748 [inline]
 hci_dev_open_sync+0x35c/0x3078 net/bluetooth/hci_sync.c:4846
 hci_dev_do_open net/bluetooth/hci_core.c:483 [inline]
 hci_power_on+0x150/0x68c net/bluetooth/hci_core.c:984
 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
Code: f2fbfff7 d343fd09 1200090a 11000d4a (38f76929) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f2fbfff7 	movk	x23, #0xdfff, lsl #48
   4:	d343fd09 	lsr	x9, x8, #3
   8:	1200090a 	and	w10, w8, #0x7
   c:	11000d4a 	add	w10, w10, #0x3
* 10:	38f76929 	ldrsb	w9, [x9, x23] <-- trapping instruction