Unable to handle kernel paging request at virtual address dfff800000000013
KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f]
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
[dfff800000000013] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Workqueue: kafsd afs_process_async_call
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __mutex_lock_common+0xfc/0x1f3c kernel/locking/mutex.c:582
lr : __mutex_lock_common+0xd0/0x1f3c kernel/locking/mutex.c:580
sp : ffff80001cc378a0
x29: ffff80001cc379e0 x28: ffff700003986f28 x27: 0000000000000000
x26: 0000000000000000 x25: 1fffe0001867f400 x24: 0000000000000000
x23: dfff800000000000 x22: ffff800010fd8f18 x21: ffff80001cc37960
x20: 0000000000000000 x19: 0000000000000038 x18: 1fffe00033e7697e
x17: ffff80001537d000 x16: ffff8000082dbd3c x15: 0000000000000000
x14: 0000000000000005 x13: 1ffff00003986f2c x12: 0000000000000000
x11: ff0080000a975dac x10: 0000000000000000 x9 : 0000000000000003
x8 : 0000000000000013 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000000 x1 : ffff800011ceedc0 x0 : 0000000000000000
Call trace:
 __mutex_lock_common+0xfc/0x1f3c kernel/locking/mutex.c:582
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 rxrpc_kernel_abort_call+0x34/0x88 net/rxrpc/sendmsg.c:853
 afs_deliver_to_call+0x4d0/0xec0 fs/afs/rxrpc.c:-1
 afs_process_async_call+0x90/0xf8 fs/afs/rxrpc.c:703
 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292
 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439
 kthread+0x254/0x2e0 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: b9486108 35000148 91018268 d343fd08 (38776908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	b9486108 	ldr	w8, [x8, #2144]
   4:	35000148 	cbnz	w8, 0x2c
   8:	91018268 	add	x8, x19, #0x60
   c:	d343fd08 	lsr	x8, x8, #3
* 10:	38776908 	ldrb	w8, [x8, x23] <-- trapping instruction