Oops: general protection fault, probably for non-canonical address 0xdffffc000000004b: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000258-0x000000000000025f]
CPU: 0 PID: 20572 Comm: kworker/0:7 Not tainted 6.10.0-rc6-syzkaller-01414-g58f9416d413a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events l2cap_info_timeout
RIP: 0010:__lock_acquire+0x6a/0x1fd0 kernel/locking/lockdep.c:5005
Code: df 0f b6 04 30 84 c0 0f 85 4b 16 00 00 83 3d d8 a5 3b 0e 00 0f 84 1c 11 00 00 83 3d 3f 9b ad 0c 00 74 2c 4c 89 e0 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 e7 e8 68 d7 89 00 48 be 00 00 00 00 00 fc
RSP: 0018:ffffc900031ef750 EFLAGS: 00010006
RAX: 000000000000004b RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000258
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f5bc26 R12: 0000000000000258
R13: 0000000000000000 R14: ffff88802f5e8000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055840b6b4131 CR3: 000000007c3f4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 lock_sock_nested+0x48/0x100 net/core/sock.c:3543
 lock_sock include/net/sock.h:1607 [inline]
 l2cap_sock_ready_cb+0x47/0x140 net/bluetooth/l2cap_sock.c:1660
 l2cap_chan_ready net/bluetooth/l2cap_core.c:1256 [inline]
 l2cap_conn_start+0x8db/0x1140 net/bluetooth/l2cap_core.c:1506
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0x6a/0x1fd0 kernel/locking/lockdep.c:5005
Code: df 0f b6 04 30 84 c0 0f 85 4b 16 00 00 83 3d d8 a5 3b 0e 00 0f 84 1c 11 00 00 83 3d 3f 9b ad 0c 00 74 2c 4c 89 e0 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 e7 e8 68 d7 89 00 48 be 00 00 00 00 00 fc
RSP: 0018:ffffc900031ef750 EFLAGS: 00010006
RAX: 000000000000004b RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000258
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f5bc26 R12: 0000000000000258
R13: 0000000000000000 R14: ffff88802f5e8000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055840b6b4131 CR3: 000000007c3f4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	df 0f                	fisttps (%rdi)
   2:	b6 04                	mov    $0x4,%dh
   4:	30 84 c0 0f 85 4b 16 	xor    %al,0x164b850f(%rax,%rax,8)
   b:	00 00                	add    %al,(%rax)
   d:	83 3d d8 a5 3b 0e 00 	cmpl   $0x0,0xe3ba5d8(%rip)        # 0xe3ba5ec
  14:	0f 84 1c 11 00 00    	je     0x1136
  1a:	83 3d 3f 9b ad 0c 00 	cmpl   $0x0,0xcad9b3f(%rip)        # 0xcad9b60
  21:	74 2c                	je     0x4f
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 30 00          	cmpb   $0x0,(%rax,%rsi,1) <-- trapping instruction
  2e:	74 12                	je     0x42
  30:	4c 89 e7             	mov    %r12,%rdi
  33:	e8 68 d7 89 00       	call   0x89d7a0
  38:	48                   	rex.W
  39:	be 00 00 00 00       	mov    $0x0,%esi
  3e:	00 fc                	add    %bh,%ah