general protection fault, probably for non-canonical address 0xdffffc0000000066: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000330-0x0000000000000337]
CPU: 1 PID: 5069 Comm: kworker/1:4 Not tainted 6.8.0-rc4-syzkaller-g8d3dea210042 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events l2cap_chan_timeout
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:587 [inline]
RIP: 0010:__mutex_lock+0xf2/0xd70 kernel/locking/mutex.c:752
Code: c0 c0 b3 44 94 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 78 0b 00 00 83 3d 7b 52 dd 08 00 75 21 49 8d 7d 60 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 c2 d9 8a f6 4d 39 6d 60 0f 85 f2 0a 00 00
RSP: 0018:ffffc900042e7a60 EFLAGS: 00010206
RAX: 0000000000000066 RBX: 0000000000000000 RCX: ffffffff9444b303
RDX: dffffc0000000000 RSI: ffff888027aed940 RDI: 0000000000000330
RBP: ffffc900042e7bb8 R08: ffffc900042e7b27 R09: 0000000000000000
R10: ffffc900042e7b00 R11: fffff5200085cf65 R12: dffffc0000000000
R13: 00000000000002d0 R14: 0000000000000000 R15: ffff888071ad9000
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f525755b198 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 l2cap_chan_timeout+0x5a/0x340 net/bluetooth/l2cap_core.c:438
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:587 [inline]
RIP: 0010:__mutex_lock+0xf2/0xd70 kernel/locking/mutex.c:752
Code: c0 c0 b3 44 94 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 78 0b 00 00 83 3d 7b 52 dd 08 00 75 21 49 8d 7d 60 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 c2 d9 8a f6 4d 39 6d 60 0f 85 f2 0a 00 00
RSP: 0018:ffffc900042e7a60 EFLAGS: 00010206
RAX: 0000000000000066 RBX: 0000000000000000 RCX: ffffffff9444b303
RDX: dffffc0000000000 RSI: ffff888027aed940 RDI: 0000000000000330
RBP: ffffc900042e7bb8 R08: ffffc900042e7b27 R09: 0000000000000000
R10: ffffc900042e7b00 R11: fffff5200085cf65 R12: dffffc0000000000
R13: 00000000000002d0 R14: 0000000000000000 R15: ffff888071ad9000
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed29190000 CR3: 0000000023a38000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c0 c0 b3             	rol    $0xb3,%al
   3:	44 94                	rex.R xchg %eax,%esp
   5:	48 c1 e8 03          	shr    $0x3,%rax
   9:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax
   e:	84 c0                	test   %al,%al
  10:	0f 85 78 0b 00 00    	jne    0xb8e
  16:	83 3d 7b 52 dd 08 00 	cmpl   $0x0,0x8dd527b(%rip)        # 0x8dd5298
  1d:	75 21                	jne    0x40
  1f:	49 8d 7d 60          	lea    0x60(%r13),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 c2 d9 8a f6       	call   0xf68ad9f8
  36:	4d 39 6d 60          	cmp    %r13,0x60(%r13)
  3a:	0f 85 f2 0a 00 00    	jne    0xb32