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: 23 Comm: kworker/1:0 Not tainted 6.5.0-syzkaller-10898-gfdde61878047 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events l2cap_chan_timeout
RIP: 0010:__mutex_lock_common+0x110/0x2530 kernel/locking/mutex.c:582
Code: 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 19 1d 00 00 83 3d b2 5d 1e 07 00 75 2b 48 8b 44 24 08 48 8d 78 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 d4 81 16 f7 48 8b 44 24 08 48 39 40 60 0f
RSP: 0018:ffffc900001d7aa0 EFLAGS: 00010206
RAX: 0000000000000066 RBX: 0000000000000000 RCX: ffffffff91ef5303
RDX: dffffc0000000000 RSI: ffff888016a6d940 RDI: 0000000000000330
RBP: ffffc900001d7c08 R08: ffffc900001d7b87 R09: 0000000000000000
R10: ffffc900001d7b60 R11: fffff5200003af71 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000140 CR3: 00000000799e4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
 l2cap_chan_timeout+0x5a/0x340 net/bluetooth/l2cap_core.c:438
 process_one_work+0x781/0x1130 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0xabf/0x1060 kernel/workqueue.c:2784
 kthread+0x2b8/0x350 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common+0x110/0x2530 kernel/locking/mutex.c:582
Code: 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 19 1d 00 00 83 3d b2 5d 1e 07 00 75 2b 48 8b 44 24 08 48 8d 78 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 d4 81 16 f7 48 8b 44 24 08 48 39 40 60 0f
RSP: 0018:ffffc900001d7aa0 EFLAGS: 00010206
RAX: 0000000000000066 RBX: 0000000000000000 RCX: ffffffff91ef5303
RDX: dffffc0000000000 RSI: ffff888016a6d940 RDI: 0000000000000330
RBP: ffffc900001d7c08 R08: ffffc900001d7b87 R09: 0000000000000000
R10: ffffc900001d7b60 R11: fffff5200003af71 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f56afbfdffc CR3: 000000000d130000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 c1 e8 03          	shr    $0x3,%rax
   4:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
   9:	84 c0                	test   %al,%al
   b:	0f 85 19 1d 00 00    	jne    0x1d2a
  11:	83 3d b2 5d 1e 07 00 	cmpl   $0x0,0x71e5db2(%rip)        # 0x71e5dca
  18:	75 2b                	jne    0x45
  1a:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  1f:	48 8d 78 60          	lea    0x60(%rax),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 d4 81 16 f7       	call   0xf716820a
  36:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  3b:	48 39 40 60          	cmp    %rax,0x60(%rax)
  3f:	0f                   	.byte 0xf