Bluetooth: hci3: Opcode 0x0c1a failed: -4
Bluetooth: hci3: Error when powering off device on rfkill (-4)
Oops: stack segment: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 21393 Comm: syz.1.4818 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:kernfs_rename_ns+0x3a/0x7a0 fs/kernfs/dir.c:1747
Code: ec 48 48 89 cb 48 89 54 24 10 49 89 f5 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 91 1f 5f ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 76 d4 c4 ff 49 83 3f 00 0f 84
RSP: 0018:ffffc900114cf7a0 EFLAGS: 00010206
RAX: ffffffff8260e6ff RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90017c3a000 RSI: 0000000000007887 RDI: 0000000000007888
RBP: 0000000000000006 R08: ffff888079f83c80 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000
R13: ffff8881446b4690 R14: 0000000000000000 R15: 0000000000000030
FS:  00007f937e1536c0(0000) GS:ffff888126138000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 0000000071a6a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kobject_move+0x3a5/0x4f0 lib/kobject.c:569
 device_move+0xe0/0x700 drivers/base/core.c:4606
 hci_conn_del_sysfs+0xb8/0x170 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline]
 hci_conn_del+0xc33/0x11b0 net/bluetooth/hci_conn.c:1217
 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:2610
 hci_dev_close_sync+0xaef/0x1330 net/bluetooth/hci_sync.c:5308
 hci_dev_do_close+0x2f/0x90 net/bluetooth/hci_core.c:501
 hci_rfkill_set_block+0x21d/0x2e0 net/bluetooth/hci_core.c:929
 rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346
 rfkill_fop_write+0x44b/0x570 net/rfkill/core.c:1301
 vfs_write+0x27e/0xb30 fs/read_write.c:684
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f937d38f6c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f937e153038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f937d5e5fa0 RCX: 00007f937d38f6c9
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000009
RBP: 00007f937d411f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f937d5e6038 R14: 00007f937d5e5fa0 R15: 00007ffce0dccaa8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kernfs_rename_ns+0x3a/0x7a0 fs/kernfs/dir.c:1747
Code: ec 48 48 89 cb 48 89 54 24 10 49 89 f5 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 91 1f 5f ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 76 d4 c4 ff 49 83 3f 00 0f 84
RSP: 0018:ffffc900114cf7a0 EFLAGS: 00010206
RAX: ffffffff8260e6ff RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90017c3a000 RSI: 0000000000007887 RDI: 0000000000007888
RBP: 0000000000000006 R08: ffff888079f83c80 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000
R13: ffff8881446b4690 R14: 0000000000000000 R15: 0000000000000030
FS:  00007f937e1536c0(0000) GS:ffff888126138000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c387f71 CR3: 0000000071a6a000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	ec                   	in     (%dx),%al
   1:	48                   	rex.W
   2:	48 89 cb             	mov    %rcx,%rbx
   5:	48 89 54 24 10       	mov    %rdx,0x10(%rsp)
   a:	49 89 f5             	mov    %rsi,%r13
   d:	49 89 fe             	mov    %rdi,%r14
  10:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  17:	fc ff df
  1a:	e8 91 1f 5f ff       	call   0xff5f1fb0
  1f:	4d 8d 7e 30          	lea    0x30(%r14),%r15
  23:	4c 89 fd             	mov    %r15,%rbp
  26:	48 c1 ed 03          	shr    $0x3,%rbp
* 2a:	42 80 7c 25 00 00    	cmpb   $0x0,0x0(%rbp,%r12,1) <-- trapping instruction
  30:	74 08                	je     0x3a
  32:	4c 89 ff             	mov    %r15,%rdi
  35:	e8 76 d4 c4 ff       	call   0xffc4d4b0
  3a:	49 83 3f 00          	cmpq   $0x0,(%r15)
  3e:	0f                   	.byte 0xf
  3f:	84                   	.byte 0x84