general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 1 PID: 8328 Comm: syz.0.869 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x165/0x390 lib/klist.c:249
Code: 80 3c 04 00 74 08 4c 89 f7 e8 d7 b0 bc f7 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 b0 b0 bc f7 49 8b 47 58 48 89 44 24 10 4c 89
RSP: 0018:ffffc900045f7580 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff888059351e00 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900045f7678 R08: ffffffff8e08a3c3 R09: 1ffffffff1c11478
R10: dffffc0000000000 R11: fffffbfff1c11479 R12: 1ffff1100c3fd68c
R13: dffffc0000000000 R14: ffff888061feb460 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056060f82e008 CR3: 0000000061bd2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 device_move+0x18a/0x6e0 drivers/base/core.c:4648
 hci_conn_del_sysfs+0xab/0x160 net/bluetooth/hci_sysfs.c:73
 hci_conn_cleanup+0x55d/0x730 net/bluetooth/hci_conn.c:172
 hci_conn_del+0x4c0/0x6d0 net/bluetooth/hci_conn.c:1152
 hci_conn_hash_flush+0x203/0x290 net/bluetooth/hci_conn.c:2511
 hci_dev_close_sync+0x9e5/0x1120 net/bluetooth/hci_sync.c:5260
 hci_dev_do_close net/bluetooth/hci_core.c:528 [inline]
 hci_unregister_dev+0x216/0x500 net/bluetooth/hci_core.c:2731
 vhci_release+0x7f/0xd0 drivers/bluetooth/hci_vhci.c:573
 __fput+0x20a/0x8b0 fs/file_table.c:320
 task_work_run+0x1d0/0x260 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0x9d5/0x2570 kernel/exit.c:881
 do_group_exit+0x229/0x2e0 kernel/exit.c:1024
 get_signal+0x1259/0x1340 kernel/signal.c:2872
 arch_do_signal_or_restart+0xc4/0x1310 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa8ec79ce59
Code: Unable to access opcode bytes at 0x7fa8ec79ce2f.
RSP: 002b:00007fa8ea9d5028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 000000000003ffee RBX: 00007fa8eca16090 RCX: 00007fa8ec79ce59
RDX: 000000000400034f RSI: 0000200000000480 RDI: 0000000000000003
RBP: 00007fa8ec832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa8eca16128 R14: 00007fa8eca16090 R15: 00007ffcdd5145b8
 </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+0x165/0x390 lib/klist.c:249
Code: 80 3c 04 00 74 08 4c 89 f7 e8 d7 b0 bc f7 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 b0 b0 bc f7 49 8b 47 58 48 89 44 24 10 4c 89
RSP: 0018:ffffc900045f7580 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff888059351e00 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900045f7678 R08: ffffffff8e08a3c3 R09: 1ffffffff1c11478
R10: dffffc0000000000 R11: fffffbfff1c11479 R12: 1ffff1100c3fd68c
R13: dffffc0000000000 R14: ffff888061feb460 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e3afda2f70 CR3: 000000007e661000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	80 3c 04 00          	cmpb   $0x0,(%rsp,%rax,1)
   4:	74 08                	je     0xe
   6:	4c 89 f7             	mov    %r14,%rdi
   9:	e8 d7 b0 bc f7       	call   0xf7bcb0e5
   e:	4d 8b 3e             	mov    (%r14),%r15
  11:	49 83 e7 fe          	and    $0xfffffffffffffffe,%r15
  15:	49 8d 7f 58          	lea    0x58(%r15),%rdi
  19:	48 89 f8             	mov    %rdi,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 05                	je     0x35
  30:	e8 b0 b0 bc f7       	call   0xf7bcb0e5
  35:	49 8b 47 58          	mov    0x58(%r15),%rax
  39:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89