general protection fault, probably for non-canonical address 0xdffffc0000000066: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000330-0x0000000000000337]
CPU: 0 PID: 5192 Comm: kworker/0:4 Not tainted 6.8.0-rc2-syzkaller-g1bbb19b6eb1b #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:587 [inline]
RIP: 0010:__mutex_lock+0x12b/0x9d0 kernel/locking/mutex.c:752
Code: d0 7c 08 84 d2 0f 85 86 06 00 00 8b 35 1e 74 9c 09 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 6e 06 00 00 48 3b 5b 60 0f 85 93 01 00 00 bf 01
RSP: 0018:ffffc900036e7b80 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 00000000000002d0 RCX: 1ffffffff28c48e4
RDX: 0000000000000066 RSI: 0000000000000000 RDI: 0000000000000330
RBP: ffffc900036e7ca0 R08: ffffffff89c60148 R09: 0000000000000000
R10: ffffc900036e7cb8 R11: 0000000000000001 R12: 1ffff920006dcf7a
R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc861feff8 CR3: 000000002f6d2000 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+0x889/0x15e0 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 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+0x12b/0x9d0 kernel/locking/mutex.c:752
Code: d0 7c 08 84 d2 0f 85 86 06 00 00 8b 35 1e 74 9c 09 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 6e 06 00 00 48 3b 5b 60 0f 85 93 01 00 00 bf 01
RSP: 0018:ffffc900036e7b80 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 00000000000002d0 RCX: 1ffffffff28c48e4
RDX: 0000000000000066 RSI: 0000000000000000 RDI: 0000000000000330
RBP: ffffc900036e7ca0 R08: ffffffff89c60148 R09: 0000000000000000
R10: ffffc900036e7cb8 R11: 0000000000000001 R12: 1ffff920006dcf7a
R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc861feff8 CR3: 000000002f6d2000 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 86 06 00 00 8b    	test   %eax,-0x74fffffa(%rsi)
   c:	35 1e 74 9c 09       	xor    $0x99c741e,%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 6e 06 00 00    	jne    0x6a2
  34:	48 3b 5b 60          	cmp    0x60(%rbx),%rbx
  38:	0f 85 93 01 00 00    	jne    0x1d1
  3e:	bf                   	.byte 0xbf
  3f:	01                   	.byte 0x1