general protection fault, probably for non-canonical address 0xdffffc0000000066: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000330-0x0000000000000337]
CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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 60 66 4a 94 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 79 0b 00 00 83 3d db 39 d5 08 00 75 21 49 8d 7d 60 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 b2 c8 7f f6 4d 39 6d 60 0f 85 f3 0a 00 00
RSP: 0000:ffffc900000d7a20 EFLAGS: 00010206
RAX: 0000000000000066 RBX: 0000000000000000 RCX: ffffffff944a6603
RDX: dffffc0000000000 RSI: ffff888017295a00 RDI: 0000000000000330
RBP: ffffc900000d7b78 R08: ffffc900000d7ae7 R09: 0000000000000000
R10: ffffc900000d7ac0 R11: fffff5200001af5d R12: dffffc0000000000
R13: 00000000000002d0 R14: 0000000000000000 R15: ffff888022445000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055da728a07e5 CR3: 0000000061c20000 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:418
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </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 60 66 4a 94 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 79 0b 00 00 83 3d db 39 d5 08 00 75 21 49 8d 7d 60 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 b2 c8 7f f6 4d 39 6d 60 0f 85 f3 0a 00 00
RSP: 0000:ffffc900000d7a20 EFLAGS: 00010206
RAX: 0000000000000066 RBX: 0000000000000000 RCX: ffffffff944a6603
RDX: dffffc0000000000 RSI: ffff888017295a00 RDI: 0000000000000330
RBP: ffffc900000d7b78 R08: ffffc900000d7ae7 R09: 0000000000000000
R10: ffffc900000d7ac0 R11: fffff5200001af5d R12: dffffc0000000000
R13: 00000000000002d0 R14: 0000000000000000 R15: ffff888022445000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dab119f0c0 CR3: 000000007b4ac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c0 60 66 4a          	shlb   $0x4a,0x66(%rax)
   4:	94                   	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 79 0b 00 00    	jne    0xb8f
  16:	83 3d db 39 d5 08 00 	cmpl   $0x0,0x8d539db(%rip)        # 0x8d539f8
  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 b2 c8 7f f6       	call   0xf67fc8e8
  36:	4d 39 6d 60          	cmp    %r13,0x60(%r13)
  3a:	0f 85 f3 0a 00 00    	jne    0xb33