ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
kobject_add_internal failed for hci2:201 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci2: failed to register connection device
Unable to handle kernel paging request at virtual address dfff800000000026
KASAN: null-ptr-deref in range [0x0000000000000130-0x0000000000000137]
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
[dfff800000000026] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4323 Comm: kworker/u5:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Workqueue: hci2 hci_rx_work
pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __lock_acquire+0xf4/0x6800 kernel/locking/lockdep.c:4919
lr : lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
sp : ffff800020e97100
x29: ffff800020e97310 x28: 0000000000000000 x27: 0000000000000001
x26: 0000000000000130 x25: 1ffff00002a40070 x24: 0000000000000000
x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000
x20: ffff800010cb5f4c x19: 0000000000000000 x18: ffff800011b7bf60
x17: ffff800018338000 x16: ffff8000082d9364 x15: ffff800017e19000
x14: 0000000000000001 x13: 1fffe0001a6ae824 x12: 0000000000100000
x11: 0000000000022832 x10: ffff7000041d2e40 x9 : ffff0000d4cb8000
x8 : 0000000000000026 x7 : ffff800010cb5f4c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000130
Call trace:
 __lock_acquire+0xf4/0x6800 kernel/locking/lockdep.c:4919
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 lock_sock_nested+0x70/0x130 net/core/sock.c:3496
 lock_sock include/net/sock.h:1805 [inline]
 l2cap_sock_ready_cb+0x4c/0x12c net/bluetooth/l2cap_sock.c:1697
 l2cap_chan_ready net/bluetooth/l2cap_core.c:1411 [inline]
 l2cap_le_start+0x8f8/0x1028 net/bluetooth/l2cap_core.c:1523
 l2cap_conn_ready net/bluetooth/l2cap_core.c:1793 [inline]
 l2cap_connect_cfm+0x57c/0xd98 net/bluetooth/l2cap_core.c:8366
 hci_connect_cfm+0x98/0x130 include/net/bluetooth/hci_core.h:1814
 le_conn_complete_evt+0xd30/0x1244 net/bluetooth/hci_event.c:5882
 hci_le_conn_complete_evt+0x114/0x3f4 net/bluetooth/hci_event.c:5908
 hci_le_meta_evt+0x2c0/0x4a0 net/bluetooth/hci_event.c:7101
 hci_event_func net/bluetooth/hci_event.c:7412 [inline]
 hci_event_packet+0x6b8/0xf18 net/bluetooth/hci_event.c:7467
 hci_rx_work+0x324/0xa80 net/bluetooth/hci_core.c:4083
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: d0067e48 b94bc108 340001c8 d343ff48 (38776908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	d0067e48 	adrp	x8, 0xcfca000
   4:	b94bc108 	ldr	w8, [x8, #3008]
   8:	340001c8 	cbz	w8, 0x40
   c:	d343ff48 	lsr	x8, x26, #3
* 10:	38776908 	ldrb	w8, [x8, x23] <-- trapping instruction