Bluetooth: hci1: Opcode 0x0c1a failed: -4
Bluetooth: hci1: Error when powering off device on rfkill (-4)
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: 15036 Comm: syz.9.2340 Not tainted 6.17.0-rc1-syzkaller-00202-g7de0eebbb4c3 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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 9c b3 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 9c b3 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90003927820 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88804ca08000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90003927908 R08: ffffffff8f89f903 R09: 1ffffffff1f13f20
R10: dffffc0000000000 R11: fffffbfff1f13f21 R12: 0000000000000000
R13: 1ffff11005f2410c R14: ffff88802f920860 R15: dffffc0000000000
FS:  00007fd76ff336c0(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcfbcbfaf98 CR3: 0000000065b92000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 device_move+0x193/0x700 drivers/base/core.c:4615
 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+0x949/0xcf0 net/bluetooth/hci_conn.c:1176
 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:2565
 hci_dev_close_sync+0xaef/0x1330 net/bluetooth/hci_sync.c:5294
 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/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd76f18ebe9
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:00007fd76ff33038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd76f3b6090 RCX: 00007fd76f18ebe9
RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fd76f211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd76f3b6128 R14: 00007fd76f3b6090 R15: 00007ffcf9b07ea8
 </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 9c b3 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 9c b3 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90003927820 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88804ca08000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90003927908 R08: ffffffff8f89f903 R09: 1ffffffff1f13f20
R10: dffffc0000000000 R11: fffffbfff1f13f21 R12: 0000000000000000
R13: 1ffff11005f2410c R14: ffff88802f920860 R15: dffffc0000000000
FS:  00007fd76ff336c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c25fd71 CR3: 0000000065b92000 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 9c b3 f6       	call   0xf6b39c60
  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 9c b3 f6       	call   0xf6b39c60
  36:	49 8b 44 24 58       	mov    0x58(%r12),%rax
  3b:	48 89 44 24 08       	mov    %rax,0x8(%rsp)