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: 8670 Comm: syz.2.492 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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 0d 56 96 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 ee 55 96 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc900065a7640 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88816f30bb80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900065a7740 R08: ffffffff90167023 R09: 1ffffffff202ce04
R10: dffffc0000000000 R11: fffffbfff202ce05 R12: 0000000000000000
R13: 1ffff1102e69f60c R14: ffff8881734fb060 R15: dffffc0000000000
FS:  00007fe8440c36c0(0000) GS:ffff88818dca4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9469017dac CR3: 0000000111a92000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 device_move+0x18e/0x720
 hci_conn_del_sysfs+0xb8/0x1a0
 hci_conn_del+0xc3d/0x1200
 hci_conn_hash_flush+0x189/0x260
 hci_dev_close_sync+0x7c8/0x1040
 hci_unregister_dev+0x21a/0x5a0
 vhci_release+0x16d/0x1c0
 __fput+0x418/0xa50
 task_work_run+0x1d9/0x270
 do_exit+0x73a/0x2360
 do_group_exit+0x22d/0x2f0
 get_signal+0x121b/0x12c0
 arch_do_signal_or_restart+0xbb/0x860
 exit_to_user_mode_loop+0xa9/0x6b0
 do_syscall_64+0x353/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe84315d68e
Code: Unable to access opcode bytes at 0x7fe84315d664.
RSP: 002b:00007fe8440c2f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fe8440c36c0 RCX: 00007fe84315d68e
RDX: 00007fe8440c2fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fe843232e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe843416038 R14: 00007fe843415fa0 R15: 00007ffcb4686368
 </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 0d 56 96 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 ee 55 96 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc900065a7640 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88816f30bb80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc900065a7740 R08: ffffffff90167023 R09: 1ffffffff202ce04
R10: dffffc0000000000 R11: fffffbfff202ce05 R12: 0000000000000000
R13: 1ffff1102e69f60c R14: ffff8881734fb060 R15: dffffc0000000000
FS:  00007fe8440c36c0(0000) GS:ffff88818dca4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9468fea2f8 CR3: 000000001d5ce000 CR4: 00000000000006f0
