general protection fault, probably for non-canonical address 0xdffffc0000000066: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000330-0x0000000000000337]
CPU: 1 PID: 27 Comm: kworker/1:0 Not tainted 6.7.0-rc2-syzkaller-gc2d5304e6c64 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events l2cap_chan_timeout
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0x12b/0x9d0 kernel/locking/mutex.c:747
Code: d0 7c 08 84 d2 0f 85 82 06 00 00 8b 35 7e 94 fe 07 85 f6 75 29 48 8d 7b 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6a 06 00 00 48 3b 5b 60 0f 85 8f 01 00 00 bf 01
RSP: 0018:ffffc90000a87b80 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 00000000000002d0 RCX: 1ffffffff24ff8bc
RDX: 0000000000000066 RSI: 0000000000000000 RDI: 0000000000000330
RBP: ffffc90000a87ca0 R08: ffffffff89884d48 R09: 0000000000000000
R10: ffffc90000a87cb8 R11: 1ffffffff22c0891 R12: 1ffff92000150f7a
R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbba36d76e1 CR3: 000000001c94e000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 l2cap_chan_timeout+0x68/0x2f0 net/bluetooth/l2cap_core.c:438
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0x12b/0x9d0 kernel/locking/mutex.c:747
Code: d0 7c 08 84 d2 0f 85 82 06 00 00 8b 35 7e 94 fe 07 85 f6 75 29 48 8d 7b 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6a 06 00 00 48 3b 5b 60 0f 85 8f 01 00 00 bf 01
RSP: 0018:ffffc90000a87b80 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 00000000000002d0 RCX: 1ffffffff24ff8bc
RDX: 0000000000000066 RSI: 0000000000000000 RDI: 0000000000000330
RBP: ffffc90000a87ca0 R08: ffffffff89884d48 R09: 0000000000000000
R10: ffffc90000a87cb8 R11: 1ffffffff22c0891 R12: 1ffff92000150f7a
R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbba379d988 CR3: 000000000cd77000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	d0 7c 08 84          	sarb   -0x7c(%rax,%rcx,1)
   4:	d2 0f                	rorb   %cl,(%rdi)
   6:	85 82 06 00 00 8b    	test   %eax,-0x74fffffa(%rdx)
   c:	35 7e 94 fe 07       	xor    $0x7fe947e,%eax
  11:	85 f6                	test   %esi,%esi
  13:	75 29                	jne    0x3e
  15:	48 8d 7b 60          	lea    0x60(%rbx),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 6a 06 00 00    	jne    0x69e
  34:	48 3b 5b 60          	cmp    0x60(%rbx),%rbx
  38:	0f 85 8f 01 00 00    	jne    0x1cd
  3e:	bf                   	.byte 0xbf
  3f:	01                   	.byte 0x1