Bluetooth: hci1: Opcode 0x0c1a failed: -4
Bluetooth: hci1: Error when powering off device on rfkill (-4)
Bluetooth: hci2: Opcode 0x0c1a failed: -4
Bluetooth: hci2: Error when powering off device on rfkill (-4)
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 13419 Comm: syz.2.1976 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:klist_remove+0x156/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 dd 4e 92 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 be 4e 92 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90008c37820 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881ba650000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90008c37920 R08: ffffffff90171a03 R09: 1ffffffff202e340
R10: dffffc0000000000 R11: fffffbfff202e341 R12: 0000000000000000
R13: 1ffff110369d3a0c R14: ffff8881b4e9d060 R15: dffffc0000000000
FS:  00007fc33dcfd6c0(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcb4d48da8 CR3: 0000000115884000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 device_move+0x193/0x730
 hci_conn_del_sysfs+0xb8/0x1a0
 hci_conn_del+0xc36/0x1230
 hci_conn_hash_flush+0x191/0x260
 hci_dev_close_sync+0x821/0x10e0
 hci_dev_do_close+0x30/0xc0
 hci_rfkill_set_block+0x1f4/0x290
 rfkill_set_block+0x1a4/0x4e0
 rfkill_fop_write+0x461/0x5a0
 vfs_write+0x29a/0xb90
 ksys_write+0x150/0x270
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc33cd9cdd9
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:00007fc33dcfd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc33d015fa0 RCX: 00007fc33cd9cdd9
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000005
RBP: 00007fc33ce32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc33d016038 R14: 00007fc33d015fa0 R15: 00007fff7265bbe8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_remove+0x156/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 dd 4e 92 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 be 4e 92 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90008c37820 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881ba650000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90008c37920 R08: ffffffff90171a03 R09: 1ffffffff202e340
R10: dffffc0000000000 R11: fffffbfff202e341 R12: 0000000000000000
R13: 1ffff110369d3a0c R14: ffff8881b4e9d060 R15: dffffc0000000000
FS:  00007fc33dcfd6c0(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005593ff2f0000 CR3: 0000000115884000 CR4: 0000000000352ef0
