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: 8567 Comm: syz.9.492 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 29 9b d5 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 0a 9b d5 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc900036975e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881bf229d40 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900036976e0 R08: ffffffff8f68d203 R09: 1ffffffff1ed1a40
R10: dffffc0000000000 R11: fffffbfff1ed1a41 R12: 0000000000000000
R13: 1ffff1102d75800c R14: ffff88816bac0060 R15: dffffc0000000000
FS:  00007f6c516a66c0(0000) GS:ffff88818e832000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe302e0c58 CR3: 0000000103fca000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 device_move+0x193/0x730
 hci_conn_del_sysfs+0xb8/0x1a0
 hci_conn_del+0xc36/0x1240
 hci_conn_hash_flush+0x191/0x260
 hci_dev_close_sync+0x821/0x1100
 hci_unregister_dev+0x21a/0x5b0
 vhci_release+0x152/0x1a0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x8bd/0x25b0
 do_group_exit+0x21c/0x2d0
 get_signal+0x1285/0x1340
 arch_do_signal_or_restart+0x9a/0x7a0
 exit_to_user_mode_loop+0x87/0x4f0
 do_syscall_64+0x2d0/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6c507c2085
Code: Unable to access opcode bytes at 0x7f6c507c205b.
RSP: 002b:00007f6c516a5f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f6c509e5fa0 RCX: 00007f6c507c2085
RDX: 00007f6c516a5fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6c507f297f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f6c509e6038 R14: 00007f6c509e5fa0 R15: 00007ffe302e5248
 </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 29 9b d5 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 0a 9b d5 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc900036975e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881bf229d40 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900036976e0 R08: ffffffff8f68d203 R09: 1ffffffff1ed1a40
R10: dffffc0000000000 R11: fffffbfff1ed1a41 R12: 0000000000000000
R13: 1ffff1102d75800c R14: ffff88816bac0060 R15: dffffc0000000000
FS:  00007f6c516a66c0(0000) GS:ffff88818e832000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f84f1b73ea0 CR3: 0000000116984000 CR4: 00000000000006f0
