Bluetooth: hci0: Opcode 0x0c1a failed: -4
Bluetooth: hci0: Error when powering off device on rfkill (-4)
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 15826 Comm: syz.8.2403 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:kernfs_rename_ns+0x3b/0xb30 fs/kernfs/dir.c:1829
Code: 48 89 fb 4c 8d 73 30 48 83 ec 30 48 89 14 24 48 89 4c 24 08 e8 36 df 4e ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 09 00 00 48 8b 43 30 48 85 c0 0f 84 7c 09 00
RSP: 0018:ffffc90005acf8f0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000ecc3000
RDX: 0000000000000006 RSI: ffffffff82b9acaa RDI: 0000000000000000
RBP: ffff8880232983c0 R08: 0000000000000007 R09: 0000000000000000
R10: 000000007fffffff R11: ffffffff81000130 R12: ffff8880432b8200
R13: ffff888072fce8c0 R14: 0000000000000030 R15: 1ffff92000b59f2b
FS:  00007fa04bb946c0(0000) GS:ffff888124376000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb14718ca10 CR3: 000000008602f000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kobject_move+0x127/0x260 lib/kobject.c:569
 device_move+0xa9/0x1140 drivers/base/core.c:4623
 hci_conn_del_sysfs+0x86/0x1a0 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline]
 hci_conn_del+0x506/0x1180 net/bluetooth/hci_conn.c:1240
 hci_conn_hash_flush+0x186/0x280 net/bluetooth/hci_conn.c:2651
 hci_dev_close_sync+0x5a7/0x1240 net/bluetooth/hci_sync.c:5368
 hci_dev_do_close+0x2e/0xb0 net/bluetooth/hci_core.c:502
 hci_rfkill_set_block+0x225/0x3a0 net/bluetooth/hci_core.c:930
 rfkill_set_block+0x205/0x510 net/rfkill/core.c:360
 rfkill_fop_write+0x2c0/0x580 net/rfkill/core.c:1314
 vfs_write+0x2aa/0x1070 fs/read_write.c:686
 ksys_write+0x1f8/0x250 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa04ad9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa04bb94028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa04b016090 RCX: 00007fa04ad9cdd9
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000008
RBP: 00007fa04ae32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa04b016128 R14: 00007fa04b016090 R15: 00007ffdfc04f628
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kernfs_rename_ns+0x3b/0xb30 fs/kernfs/dir.c:1829
Code: 48 89 fb 4c 8d 73 30 48 83 ec 30 48 89 14 24 48 89 4c 24 08 e8 36 df 4e ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 09 00 00 48 8b 43 30 48 85 c0 0f 84 7c 09 00
RSP: 0018:ffffc90005acf8f0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000ecc3000
RDX: 0000000000000006 RSI: ffffffff82b9acaa RDI: 0000000000000000
RBP: ffff8880232983c0 R08: 0000000000000007 R09: 0000000000000000
R10: 000000007fffffff R11: ffffffff81000130 R12: ffff8880432b8200
R13: ffff888072fce8c0 R14: 0000000000000030 R15: 1ffff92000b59f2b
FS:  00007fa04bb946c0(0000) GS:ffff888124476000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c381983 CR3: 000000008602f000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	48 89 fb             	mov    %rdi,%rbx
   3:	4c 8d 73 30          	lea    0x30(%rbx),%r14
   7:	48 83 ec 30          	sub    $0x30,%rsp
   b:	48 89 14 24          	mov    %rdx,(%rsp)
   f:	48 89 4c 24 08       	mov    %rcx,0x8(%rsp)
  14:	e8 36 df 4e ff       	call   0xff4edf4f
  19:	4c 89 f2             	mov    %r14,%rdx
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 c8 09 00 00    	jne    0x9fc
  34:	48 8b 43 30          	mov    0x30(%rbx),%rax
  38:	48 85 c0             	test   %rax,%rax
  3b:	0f                   	.byte 0xf
  3c:	84 7c 09 00          	test   %bh,0x0(%rcx,%rcx,1)