[VirtualBox] Install virtualbox driver

Install Linux Header

Install linux header
pacman -S linux-headers

check linux version
uname -a
Linux archlinux 5.2.4-arch1-1-ARCH #1 SMP PREEMPT Sun Jul 28 10:52:46 UTC 2019 x86_64 GNU/Linux

Download VirtualBox-6.0.10-132072-Linux_amd64.run from “All distributions 64-bit”:https://www.virtualbox.org/wiki/Linux_Downloads

Download linux header
Download linux-headers-4.13.9-1-x86_64.pkg.tar.xz

Decompress the package
mkdir /tmp/mozilla/linux-headers
tar xvf linux-headers-5.2.4.arch1-1-x86_64.pkg.tar.xz -C /tmp/mozilla/linux-headers
sudo cp /tmp/mozilla/linux-headers/usr/usr/src/linux-5.2.4.arch1/* /lib/modules/5.2.4-arch1-1-ARCH/build -rf

Install VirtualBox

make a folder was named test
mkdir /tmp/test

Extract file to the folder of test
sh ./VirtualBox-6.0.10-132072-Linux_amd64.run --target /tmp/test/

jump into /tmp/test
cd /tmp/test

Install Virtualbox
sudo ./install.sh

make a folder was named src
mkdir /tmp/test/src

extract VirtualBox.tar.bz2 into src
tar xvf VirtualBox.tar.bz2 -C src/

jump into /tmp/test/src/src/vboxhost and compile source code
cd /tmp/test/src/src/vboxhost/

editor build_in_tmp, remove rm command like below

execute script to compile vbox kernel
./build_in_tmp

copy all kernal which under /tmp/vbox.0 (0 will depend on, sometimes is 1 or 2) to any folder which you want.
cp /tmp/vbox.2/vbox*.ko to somewhere

#!/bin/sh
# $Id: build_in_tmp 118839 2017-10-28 15:14:05Z bird $
## @file
# Script to build a kernel module in /tmp.
#
# Useful if the module sources are installed in read-only directory.
#

#
# Copyright (C) 2007-2017 Oracle Corporation
#
# This file is part of VirtualBox Open Source Edition (OSE), as
# available from http://www.virtualbox.org. This file is free software;
# you can redistribute it and/or modify it under the terms of the GNU
# General Public License (GPL) as published by the Free Software
# Foundation, in version 2 as it comes in the "COPYING" file of the
# VirtualBox OSE distribution. VirtualBox OSE is distributed in the
# hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
#
# The contents of this file may alternatively be used under the terms
# of the Common Development and Distribution License Version 1.0
# (CDDL) only, as it comes in the "COPYING.CDDL" file of the
# VirtualBox OSE distribution, in which case the provisions of the
# CDDL are applicable instead of those of the GPL.
#
# You may elect to license modified versions of this file under the
# terms and conditions of either the GPL or the CDDL or both.
#

# find a unique temp directory
num=0
while true; do
  tmpdir="/tmp/vbox.$num"
  if mkdir -m 0755 "$tmpdir" 2> /dev/null; then
    break
  fi
  num=`expr $num + 1`
  if  [ $num -gt 200 ]; then
    echo "Could not find a valid tmp directory"
    exit 1
  fi
done

# Guest optimal number of make jobs.
MAKE_JOBS=`grep vendor_id /proc/cpuinfo | wc -l`
if [ "${MAKE_JOBS}" -le "0" ]; then MAKE_JOBS=1; fi

# Parse our arguments, anything we don't grok is for make.
while true; do
    if [ "$1" = "--save-module-symvers" ]; then
      shift
      SAVE_MOD_SYMVERS="$1"
      shift
    elif [ "$1" = "--use-module-symvers" ]; then
      shift
      USE_MOD_SYMVERS="$1"
      shift
    elif [ "$1" = "--module-source" ]; then
      shift
      MODULE_SOURCE="$1"
      shift
    else
      break
    fi
done

# copy
if [ -n "$MODULE_SOURCE" ]; then
  cp -a "$MODULE_SOURCE"/* $tmpdir/
else
  cp -a ${0%/*}/* $tmpdir/
fi
if [ -n "$USE_MOD_SYMVERS" ]; then
  cp $USE_MOD_SYMVERS $tmpdir/Module.symvers
fi

# make, cleanup if success
cd "$tmpdir"
if make "-j`echo ${MAKE_JOBS}`" "$@"; then  # strip leading space from "MAKE_JOBS"
  if [ -n "$SAVE_MOD_SYMVERS" ]; then
    if [ -f Module.symvers ]; then
      cp -f Module.symvers $SAVE_MOD_SYMVERS
    else
      cat /dev/null > $SAVE_MOD_SYMVERS
    fi
  fi
  #rm -rf $tmpdir   # Remove rm
  exit 0
fi

# failure
#rm -rf $tmpdir  # Remove rm
exit 1

Q: insmod: ERROR: could not insert module ./vboxdrv.ko: Invalid module format
A: dmesg

[ 2594.143481] vboxdrv: version magic '5.2.7-arch1-1-ARCH SMP preempt mod_unload ’ should be '5.2.4-arch1-1-ARCH SMP preempt mod_unload ’

Ref:

"[Virtualbox kernel module][Archlinux] How to compile virtualbox kernle module ":http://fkcsmart.blogspot.com/2017/11/virtualbox-kernel-modulearchlinux-how.html