Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 9137 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x14a/0x340 lib/klist.c:249
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 49 88 d9 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 2a 88 d9 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90003b7f5c0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88802fafbd00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90003b7f6c0 R08: ffffffff8f642c83 R09: 1ffffffff1ec8590
R10: dffffc0000000000 R11: fffffbfff1ec8591 R12: 0000000000000000
R13: 1ffff1100f93c90c R14: ffff88807c9e4860 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125ed5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8ece16a8 CR3: 0000000032ff0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 device_move+0x193/0x730 drivers/base/core.c:4615
 hci_conn_del_sysfs+0xb8/0x1a0 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline]
 hci_conn_del+0xc33/0x1240 net/bluetooth/hci_conn.c:1229
 hci_conn_hash_flush+0x191/0x260 net/bluetooth/hci_conn.c:2633
 hci_dev_close_sync+0xacf/0x13c0 net/bluetooth/hci_sync.c:5315
 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]
 hci_unregister_dev+0x21a/0x5b0 net/bluetooth/hci_core.c:2715
 vhci_release+0x152/0x1a0 drivers/bluetooth/hci_vhci.c:690
 __fput+0x44c/0xa70 fs/file_table.c:468
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6bd/0x2300 kernel/exit.c:970
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1111
 get_signal+0x1285/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x87/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2e9/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd7cad8f2cb
Code: Unable to access opcode bytes at 0x7fd7cad8f2a1.
RSP: 002b:00007fff96d10370 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffed RBX: 0000000000000005 RCX: 00007fd7cad8f2cb
RDX: 00007fff96d103d0 RSI: 0000000000008933 RDI: 0000000000000005
RBP: 00007fff96d103d0 R08: 0000000000000009 R09: 0000000000000004
R10: 0000000000000022 R11: 0000000000000246 R12: 00007fff96d1045c
R13: 00007fd7cae1335f R14: 00007fd7cbb14620 R15: 00007fd7cae1335f
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x14a/0x340 lib/klist.c:249
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 49 88 d9 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 2a 88 d9 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90003b7f5c0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88802fafbd00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90003b7f6c0 R08: ffffffff8f642c83 R09: 1ffffffff1ec8590
R10: dffffc0000000000 R11: fffffbfff1ec8591 R12: 0000000000000000
R13: 1ffff1100f93c90c R14: ffff88807c9e4860 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125fd5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056230670cf40 CR3: 000000000dd36000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	4d 89 f5             	mov    %r14,%r13
   3:	49 c1 ed 03          	shr    $0x3,%r13
   7:	43 80 7c 3d 00 00    	cmpb   $0x0,0x0(%r13,%r15,1)
   d:	74 08                	je     0x17
   f:	4c 89 f7             	mov    %r14,%rdi
  12:	e8 49 88 d9 f6       	call   0xf6d98860
  17:	4d 8b 26             	mov    (%r14),%r12
  1a:	49 83 e4 fe          	and    $0xfffffffffffffffe,%r12
  1e:	49 8d 7c 24 58       	lea    0x58(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 2a 88 d9 f6       	call   0xf6d98860
  36:	49 8b 44 24 58       	mov    0x58(%r12),%rax
  3b:	48 89 44 24 08       	mov    %rax,0x8(%rsp)