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: 17249 Comm: syz.0.2938 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 89 1b b2 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 6a 1b b2 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc900038ff940 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8880210bd640 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900038ffa40 R08: ffffffff8f8a08e3 R09: 1ffffffff1f1411c
R10: dffffc0000000000 R11: fffffbfff1f1411d R12: 0000000000000000
R13: 1ffff110072d738c R14: ffff8880396b9c60 R15: dffffc0000000000
FS:  00007fe999b026c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe999b01fc8 CR3: 000000010e8b6000 CR4: 00000000000006f0
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_dev_close+0x108/0x200
 sock_do_ioctl+0xdc/0x300
 sock_ioctl+0x576/0x790
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe998b8eba9
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:00007fe999b02038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe998dd5fa0 RCX: 00007fe998b8eba9
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000006
RBP: 00007fe998c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe998dd6038 R14: 00007fe998dd5fa0 R15: 00007ffc63a60a48
 </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 89 1b b2 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 6a 1b b2 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc900038ff940 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8880210bd640 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900038ffa40 R08: ffffffff8f8a08e3 R09: 1ffffffff1f1411c
R10: dffffc0000000000 R11: fffffbfff1f1411d R12: 0000000000000000
R13: 1ffff110072d738c R14: ffff8880396b9c60 R15: dffffc0000000000
FS:  00007fe999b026c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6a1df07d60 CR3: 000000010e8b6000 CR4: 00000000000006f0
