Oops: general protection fault, probably for non-canonical address 0xdffffc000000004b: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000258-0x000000000000025f]
CPU: 1 UID: 0 PID: 6041 Comm: kworker/1:5 Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events l2cap_info_timeout
RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 e9 fe cb 60 09 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90003fffa00 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: 0000000000000258 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8950f3b1 RDI: dffffc000000004b
RBP: 0000000000000258 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffff80 R11: 0000000000000001 R12: ffffffff8950f3b1
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888124852000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3305ffff CR3: 0000000033491000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __kasan_check_byte+0x13/0x50 mm/kasan/common.c:556
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire kernel/locking/lockdep.c:5845 [inline]
 lock_acquire+0xfc/0x350 kernel/locking/lockdep.c:5828
 lock_sock_nested+0x41/0xf0 net/core/sock.c:3752
 lock_sock include/net/sock.h:1667 [inline]
 l2cap_sock_ready_cb+0x41/0x170 net/bluetooth/l2cap_sock.c:1674
 l2cap_chan_ready net/bluetooth/l2cap_core.c:1246 [inline]
 l2cap_conn_start+0x144/0xb30 net/bluetooth/l2cap_core.c:1512
 l2cap_info_timeout+0x81/0xa0 net/bluetooth/l2cap_core.c:1669
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199
Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 e9 fe cb 60 09 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90003fffa00 EFLAGS: 00010286

RAX: dffffc0000000000 RBX: 0000000000000258 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8950f3b1 RDI: dffffc000000004b
RBP: 0000000000000258 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffff80 R11: 0000000000000001 R12: ffffffff8950f3b1
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888124852000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555e72a808 CR3: 0000000028e37000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	0f 1f 00             	nopl   (%rax)
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	66 0f 1f 00          	nopw   (%rax)
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 c1 ef 03          	shr    $0x3,%rdi
  27:	48 01 c7             	add    %rax,%rdi
* 2a:	0f b6 07             	movzbl (%rdi),%eax <-- trapping instruction
  2d:	3c 07                	cmp    $0x7,%al
  2f:	0f 96 c0             	setbe  %al
  32:	e9 fe cb 60 09       	jmp    0x960cc35
  37:	66                   	data16
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)