Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 1 UID: 0 PID: 22423 Comm: syz.1.14105 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+0x14a/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 c9 fc e7 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 aa fc e7 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90008c9f5e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881747e3a00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90008c9f6e0 R08: ffffffff8f63a103 R09: 1ffffffff1ec7420
R10: dffffc0000000000 R11: fffffbfff1ec7421 R12: 0000000000000000
R13: 1ffff1103383208c R14: ffff88819c190460 R15: dffffc0000000000
FS:  00007fde0bc376c0(0000) GS:ffff8882a9f36000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe5b851762 CR3: 000000019809c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 device_move+0x193/0x700
 hci_conn_del_sysfs+0xb8/0x170
 hci_conn_del+0xc33/0x11b0
 hci_conn_hash_flush+0x191/0x230
 hci_dev_close_sync+0xaef/0x1330
 hci_unregister_dev+0x21a/0x510
 vhci_release+0x152/0x1a0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x6b5/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1285/0x1340
 arch_do_signal_or_restart+0xa0/0x790
 exit_to_user_mode_loop+0x72/0x130
 do_syscall_64+0x2bd/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fde0adc2005
Code: Unable to access opcode bytes at 0x7fde0adc1fdb.
RSP: 002b:00007fde0bc36f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fde0afe5fa0 RCX: 00007fde0adc2005
RDX: 00007fde0bc36fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fde0ae13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fde0afe6038 R14: 00007fde0afe5fa0 R15: 00007ffc37758498
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_remove+0x14a/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 c9 fc e7 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 aa fc e7 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90008c9f5e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881747e3a00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90008c9f6e0 R08: ffffffff8f63a103 R09: 1ffffffff1ec7420
R10: dffffc0000000000 R11: fffffbfff1ec7421 R12: 0000000000000000
R13: 1ffff1103383208c R14: ffff88819c190460 R15: dffffc0000000000
FS:  00007fde0bc376c0(0000) GS:ffff8882a9f36000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe5b9b42f8 CR3: 000000019809c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
