Bluetooth: Wrong link type (-22)
general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
CPU: 1 PID: 3575 Comm: kworker/u5:8 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: hci5 hci_power_on
RIP: 0010:btintel_read_version+0x8c/0x1b0 drivers/bluetooth/btintel.c:414
Code: 08 4c 89 e7 e8 95 22 39 fa 49 8b 34 24 e9 cc 00 00 00 48 89 c3 48 b9 00 00 00 00 00 fc ff df 4c 8d 68 70 4c 89 e8 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 f2 00 00 00 41 8b 6d 00 bf 0a 00 00 00 89
RSP: 0018:ffffc9000480f588 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000031 RDI: 0000000000000000
RBP: ffffc9000480f870 R08: ffffffff89a074fe R09: ffffffff89a07402
R10: 0000000000000002 R11: ffff88802877d940 R12: ffff888022be0000
R13: 0000000000000070 R14: 0000000000000000 R15: ffffc9000480f780
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd2e14dd18 CR3: 000000005f382000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ag6xx_setup+0x1c1/0x1010 drivers/bluetooth/hci_ag6xx.c:169
 hci_uart_setup+0x390/0x800 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+0x49a/0x3590 net/bluetooth/hci_sync.c:4846
 hci_dev_do_open net/bluetooth/hci_core.c:483 [inline]
 hci_power_on+0x1c4/0x6f0 net/bluetooth/hci_core.c:984
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btintel_read_version+0x8c/0x1b0 drivers/bluetooth/btintel.c:414
Code: 08 4c 89 e7 e8 95 22 39 fa 49 8b 34 24 e9 cc 00 00 00 48 89 c3 48 b9 00 00 00 00 00 fc ff df 4c 8d 68 70 4c 89 e8 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 f2 00 00 00 41 8b 6d 00 bf 0a 00 00 00 89
RSP: 0018:ffffc9000480f588 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000031 RDI: 0000000000000000
RBP: ffffc9000480f870 R08: ffffffff89a074fe R09: ffffffff89a07402
R10: 0000000000000002 R11: ffff88802877d940 R12: ffff888022be0000
R13: 0000000000000070 R14: 0000000000000000 R15: ffffc9000480f780
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff7a4fad988 CR3: 000000007beb4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	08 4c 89 e7          	or     %cl,-0x19(%rcx,%rcx,4)
   4:	e8 95 22 39 fa       	call   0xfa39229e
   9:	49 8b 34 24          	mov    (%r12),%rsi
   d:	e9 cc 00 00 00       	jmp    0xde
  12:	48 89 c3             	mov    %rax,%rbx
  15:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  1c:	fc ff df
  1f:	4c 8d 68 70          	lea    0x70(%rax),%r13
  23:	4c 89 e8             	mov    %r13,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 f2 00 00 00    	jne    0x128
  36:	41 8b 6d 00          	mov    0x0(%r13),%ebp
  3a:	bf 0a 00 00 00       	mov    $0xa,%edi
  3f:	89                   	.byte 0x89