ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci1: 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: 0 PID: 4301 Comm: kworker/u5:2 Not tainted 6.1.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: hci1 hci_rx_work
pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __lock_acquire+0xe0/0x6544 kernel/locking/lockdep.c:4919
lr : lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
sp : ffff800020797120
x29: ffff800020797330 x28: dfff800000000000 x27: 0000000000000000
x26: ffff800010bccc70 x25: 1ffff00002a0e0b0 x24: 0000000000000000
x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000000
x20: 0000000000000130 x19: 0000000000000000 x18: ffff800011a7bd00
x17: ffff80001819f000 x16: ffff8000082d1c08 x15: ffff800017c7ffc0
x14: ffff0000c61fc218 x13: ffff0000c61fc308 x12: 0000000000100000
x11: 0000000000024a3c x10: ffff7000040f2e44 x9 : ffff800015070584
x8 : 0000000000000026 x7 : ffff800010bccc70 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000130
Call trace:
 __lock_acquire+0xe0/0x6544 kernel/locking/lockdep.c:4919
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 lock_sock_nested+0x70/0x130 net/core/sock.c:3488
 lock_sock include/net/sock.h:1756 [inline]
 l2cap_sock_ready_cb+0x4c/0x130 net/bluetooth/l2cap_sock.c:1694
 l2cap_chan_ready net/bluetooth/l2cap_core.c:1410 [inline]
 l2cap_le_start+0x8f0/0x1010 net/bluetooth/l2cap_core.c:1522
 l2cap_conn_ready net/bluetooth/l2cap_core.c:1791 [inline]
 l2cap_connect_cfm+0x578/0xd64 net/bluetooth/l2cap_core.c:8340
 hci_connect_cfm+0x98/0x130 include/net/bluetooth/hci_core.h:1787
 le_conn_complete_evt+0xaa4/0xf8c net/bluetooth/hci_event.c:5871
 hci_le_conn_complete_evt+0x114/0x3f8 net/bluetooth/hci_event.c:5897
 hci_le_meta_evt+0x2c0/0x4a4 net/bluetooth/hci_event.c:7067
 hci_event_func net/bluetooth/hci_event.c:7378 [inline]
 hci_event_packet+0x6ac/0xf08 net/bluetooth/hci_event.c:7433
 hci_rx_work+0x324/0xaa0 net/bluetooth/hci_core.c:4090
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
Code: d0067208 b9468108 340001c8 d343fe88 (387c6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	d0067208 	adrp	x8, 0xce42000
   4:	b9468108 	ldr	w8, [x8, #1664]
   8:	340001c8 	cbz	w8, 0x40
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	387c6908 	ldrb	w8, [x8, x28] <-- trapping instruction