Bluetooth: hci0: Opcode 0x0c1a failed: -110
general protection fault, probably for non-canonical address 0xdffffc0000000026: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000130-0x0000000000000137]
CPU: 0 PID: 48 Comm: kworker/u5:0 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: hci0 hci_rx_work
RIP: 0010:__lock_acquire+0xe8/0x7c50 kernel/locking/lockdep.c:4919
Code: 42 0f b6 04 00 84 c0 0f 85 53 65 00 00 83 3d 42 c5 9b 0c 00 0f 84 c0 27 00 00 83 3d 71 98 1c 0b 00 74 29 48 89 d8 48 c1 e8 03 <42> 80 3c 00 00 74 12 48 89 df e8 49 5d 6f 00 49 b8 00 00 00 00 00
RSP: 0018:ffffc90000b97300 EFLAGS: 00010002
RAX: 0000000000000026 RBX: 0000000000000130 RCX: 1ffff92000172e84
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130
RBP: ffffc90000b97550 R08: dffffc0000000000 R09: 0000000000000000
R10: fffffbfff1bfd006 R11: 1ffffffff1bfd005 R12: ffff88801dec5940
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f88ff1a90 CR3: 000000007f94f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 lock_sock_nested+0x44/0x100 net/core/sock.c:3488
 lock_sock include/net/sock.h:1756 [inline]
 l2cap_sock_new_connection_cb+0x46/0x2a0 net/bluetooth/l2cap_sock.c:1493
 l2cap_connect_cfm+0x35d/0x10d0 net/bluetooth/l2cap_core.c:8323
 hci_connect_cfm+0x8f/0x130 include/net/bluetooth/hci_core.h:1787
 le_conn_complete_evt+0xdb2/0x1320 net/bluetooth/hci_event.c:5871
 hci_le_conn_complete_evt+0x183/0x440 net/bluetooth/hci_event.c:5897
 hci_event_func net/bluetooth/hci_event.c:7378 [inline]
 hci_event_packet+0x791/0x1210 net/bluetooth/hci_event.c:7433
 hci_rx_work+0x3eb/0xd40 net/bluetooth/hci_core.c:4090
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0xe8/0x7c50 kernel/locking/lockdep.c:4919
Code: 42 0f b6 04 00 84 c0 0f 85 53 65 00 00 83 3d 42 c5 9b 0c 00 0f 84 c0 27 00 00 83 3d 71 98 1c 0b 00 74 29 48 89 d8 48 c1 e8 03 <42> 80 3c 00 00 74 12 48 89 df e8 49 5d 6f 00 49 b8 00 00 00 00 00
RSP: 0018:ffffc90000b97300 EFLAGS: 00010002
RAX: 0000000000000026 RBX: 0000000000000130 RCX: 1ffff92000172e84
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130
RBP: ffffc90000b97550 R08: dffffc0000000000 R09: 0000000000000000
R10: fffffbfff1bfd006 R11: 1ffffffff1bfd005 R12: ffff88801dec5940
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f88ff1a90 CR3: 000000007f94f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	42 0f b6 04 00       	movzbl (%rax,%r8,1),%eax
   5:	84 c0                	test   %al,%al
   7:	0f 85 53 65 00 00    	jne    0x6560
   d:	83 3d 42 c5 9b 0c 00 	cmpl   $0x0,0xc9bc542(%rip)        # 0xc9bc556
  14:	0f 84 c0 27 00 00    	je     0x27da
  1a:	83 3d 71 98 1c 0b 00 	cmpl   $0x0,0xb1c9871(%rip)        # 0xb1c9892
  21:	74 29                	je     0x4c
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 00 00       	cmpb   $0x0,(%rax,%r8,1) <-- trapping instruction
  2f:	74 12                	je     0x43
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 49 5d 6f 00       	call   0x6f5d82
  39:	49                   	rex.WB
  3a:	b8 00 00 00 00       	mov    $0x0,%eax