Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 UID: 0 PID: 24876 Comm: syz-executor Not tainted 6.15.0-rc6-syzkaller-01230-gf685204c57e8 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:kernfs_rename_ns+0x3a/0x810 fs/kernfs/dir.c:1744
Code: ec 40 49 89 cf 48 89 54 24 08 49 89 f4 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 f1 41 64 ff 49 8d 6e 30 49 89 ed 49 c1 ed 03 <41> 80 7c 1d 00 00 74 08 48 89 ef e8 a6 3b c6 ff 48 83 7d 00 00 0f
RSP: 0018:ffffc90003c2f7e8 EFLAGS: 00010206
RAX: ffffffff825bafff RBX: dffffc0000000000 RCX: ffff88807f268000
RDX: 0000000000000000 RSI: ffff88801faea3c0 RDI: 0000000000000000
RBP: 0000000000000030 R08: ffff88807f268000 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000000 R12: ffff88801faea3c0
R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881261b6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001b00 CR3: 0000000051ec6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kobject_move+0x3a5/0x4f0 lib/kobject.c:569
 device_move+0xe0/0x700 drivers/base/core.c:4609
 hci_conn_del_sysfs+0xb8/0x170 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline]
 hci_conn_del+0x8f5/0xca0 net/bluetooth/hci_conn.c:1167
 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:2535
 hci_dev_close_sync+0xaef/0x1330 net/bluetooth/hci_sync.c:5225
 hci_dev_do_close net/bluetooth/hci_core.c:483 [inline]
 hci_unregister_dev+0x206/0x500 net/bluetooth/hci_core.c:2678
 vhci_release+0x80/0xd0 drivers/bluetooth/hci_vhci.c:665
 __fput+0x44c/0xa70 fs/file_table.c:465
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x8d6/0x2550 kernel/exit.c:953
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
 __do_sys_exit_group kernel/exit.c:1113 [inline]
 __se_sys_exit_group kernel/exit.c:1111 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1111
 x64_sys_call+0x21ba/0x21c0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2916d8e969
Code: Unable to access opcode bytes at 0x7f2916d8e93f.
RSP: 002b:00007ffefb82a5f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2916d8e969
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007f2916dee8f0 R08: 00007ffefb828397 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000003 R14: 00000000ffffffff R15: 00007ffefb82a7b0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kernfs_rename_ns+0x3a/0x810 fs/kernfs/dir.c:1744
Code: ec 40 49 89 cf 48 89 54 24 08 49 89 f4 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 f1 41 64 ff 49 8d 6e 30 49 89 ed 49 c1 ed 03 <41> 80 7c 1d 00 00 74 08 48 89 ef e8 a6 3b c6 ff 48 83 7d 00 00 0f
RSP: 0018:ffffc90003c2f7e8 EFLAGS: 00010206
RAX: ffffffff825bafff RBX: dffffc0000000000 RCX: ffff88807f268000
RDX: 0000000000000000 RSI: ffff88801faea3c0 RDI: 0000000000000000
RBP: 0000000000000030 R08: ffff88807f268000 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000000 R12: ffff88801faea3c0
R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881260b6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04b4980178 CR3: 0000000051f7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	ec                   	in     (%dx),%al
   1:	40                   	rex
   2:	49 89 cf             	mov    %rcx,%r15
   5:	48 89 54 24 08       	mov    %rdx,0x8(%rsp)
   a:	49 89 f4             	mov    %rsi,%r12
   d:	49 89 fe             	mov    %rdi,%r14
  10:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
  17:	fc ff df
  1a:	e8 f1 41 64 ff       	call   0xff644210
  1f:	49 8d 6e 30          	lea    0x30(%r14),%rbp
  23:	49 89 ed             	mov    %rbp,%r13
  26:	49 c1 ed 03          	shr    $0x3,%r13
* 2a:	41 80 7c 1d 00 00    	cmpb   $0x0,0x0(%r13,%rbx,1) <-- trapping instruction
  30:	74 08                	je     0x3a
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	e8 a6 3b c6 ff       	call   0xffc63be0
  3a:	48 83 7d 00 00       	cmpq   $0x0,0x0(%rbp)
  3f:	0f                   	.byte 0xf