1300 892686 BUG unable to handle kernel NULL pointer dereference at 00

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[ 1300.892686] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
[ 1300.892697] IP: dirlist_fini+0x38/0x7a [hook]
[ 1300.892698] PGD 0 P4D 0
[ 1300.892701] Oops: 0000 [#1] SMP PTI
[ 1300.892702] Modules linked in: hook(OE-) vboxsf snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi crct10dif_pclmul crc32_pclmul ghash_clmulni_intel joydev snd_seq snd_seq_device snd_timer pcbc aesni_intel snd input_leds aes_x86_64 crypto_simd glue_helper cryptd vboxguest soundcore vboxvideo(CE) ttm drm_kms_helper drm fb_sys_fops syscopyarea sysfillrect sysimgblt intel_rapl_perf mac_hid serio_raw sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid mptspi mptscsih psmouse mptbase ahci scsi_transport_spi libahci e1000 i2c_piix4 pata_acpi video
[ 1300.892732] CPU: 1 PID: 15777 Comm: rmmod Tainted: G C OE 4.15.0-50-generic #54-Ubuntu
[ 1300.892733] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 1300.892739] RIP: 0010:dirlist_fini+0x38/0x7a [hook]
[ 1300.892740] RSP: 0018:ffffaf26450d7e48 EFLAGS: 00010246
[ 1300.892741] RAX: 0000000000000000 RBX: ffff8fb42a685c98 RCX: 0000000000000000
[ 1300.892743] RDX: ffffaf26450d7e20 RSI: 0000000053c9c540 RDI: ffffaf26450d7e18
[ 1300.892744] RBP: ffffaf26450d7e70 R08: 0000000000000000 R09: 0000000000005780
[ 1300.892745] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 1300.892746] R13: ffff8fb42a685c80 R14: 0000000000000000 R15: 0000000000000000
[ 1300.892748] FS: 00007f9053c9c540(0000) GS:ffff8fb4ffc40000(0000) knlGS:0000000000000000
[ 1300.892749] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1300.892750] CR2: 0000000000000010 CR3: 00000001704e4006 CR4: 00000000000606e0
[ 1300.892753] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1300.892754] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1300.892755] Call Trace:
[ 1300.892763] hide_dir_fini+0x15/0x20 [hook]
[ 1300.892768] finalize+0x68/0x7a [hook]
[ 1300.892773] lkm_exit+0x13/0x3b [hook]
[ 1300.892776] SyS_delete_module+0x1ab/0x2c0
[ 1300.892779] do_syscall_64+0x73/0x130
[ 1300.892781] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 1300.892783] RIP: 0033:0x7f90537bf1b7
[ 1300.892784] RSP: 002b:00007ffc5a0c0248 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[ 1300.892785] RAX: ffffffffffffffda RBX: 00007ffc5a0c02a8 RCX: 00007f90537bf1b7
[ 1300.892787] RDX: 000000000000000a RSI: 0000000000000800 RDI: 00005573452067f8
[ 1300.892788] RBP: 0000557345206790 R08: 00007ffc5a0bf1c1 R09: 0000000000000000
[ 1300.892789] R10: 00007f905383bcc0 R11: 0000000000000206 R12: 00007ffc5a0c0470
[ 1300.892790] R13: 00007ffc5a0c1eee R14: 0000557345206260 R15: 0000557345206790
[ 1300.892791] Code: ad 29 23 00 45 31 f6 41 54 53 48 c7 05 9c 29 23 00 00 00 00 00 49 8d 5d 18 e8 63 f0 49 d3 4d 39 75 10 76 36 4c 8b 7b 08 45 31 e4 <4d> 39 67 10 76 0f 4b 8b 7c e7 18 49 ff c4 e8 43 45 5e d3 eb eb
[ 1300.892819] RIP: dirlist_fini+0x38/0x7a [hook] RSP: ffffaf26450d7e48
[ 1300.892820] CR2: 0000000000000010
[ 1300.892822] ---[ end trace dfdf5f4b9d462c66 ]---
[ 1413.071968] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 1413.073553] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'