1#!/bin/bash 2# Copyright 2018 syzkaller project authors. All rights reserved. 3# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. 4 5# This script setups everything that's needed to run syzkaller 6# using qemu on known working syzkaller/kernel revisions. 7# Tested on Ubuntu 16.04 and Debian rolling. The script downloads a bunch 8# of stuff, so make sure you have a good internet connection. 9# But first ensure that you have KVM enabled in BIOS and in kernel, 10# otherwise fuzzing will be very slow and lots of things will time out, see: 11# https://help.ubuntu.com/community/KVM/Installation 12# https://www.linux-kvm.org/page/FAQ 13# If everything goes successfully, the script will start syz-manager 14# that will start fuzzing Linux kernel. You should see periodic log lines 15# of the following form: 16# 2018/04/01 10:00:00 VMs 10, executed 50170, cover 42270, crashes 0, repro 0 17# syz-manager web UI contains a summary of crashes: 18# http://localhost:20000 19# You can always abort syz-manager with Ctrl+C and start it again by running 20# the last command of this script. 21 22set -eux 23 24export DIR=$PWD 25export PATH=$DIR/go/bin:$PATH 26export GOPATH=$DIR/gopath 27export GOROOT= 28export NVM=$(((`free -g | grep "Mem:" | awk '{print $2}'`-1)/3)) 29 30sudo apt-get install -y -q make git curl bison flex bc libssl-dev gcc g++ qemu-system-x86 31 32curl https://dl.google.com/go/go1.10.1.linux-amd64.tar.gz | tar -xz 33curl https://storage.googleapis.com/syzkaller/gcc-7.tar.gz | tar -xz 34curl https://storage.googleapis.com/syzkaller/corpus.db.tar.gz | tar -xz 35wget https://storage.googleapis.com/syzkaller/wheezy.img 36wget https://storage.googleapis.com/syzkaller/wheezy.img.key 37chmod 0600 wheezy.img.key 38mkdir workdir 39mv corpus.db workdir/ 40 41go get -d github.com/google/syzkaller/... 42(cd $GOPATH/src/github.com/google/syzkaller; \ 43 git checkout ad7d294798bac1b8da37cf303e44ade90689bb1c; \ 44 make; \ 45) 46 47git clone --branch v4.13 --single-branch --depth=1 \ 48 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 49curl https://gist.githubusercontent.com/dvyukov/2c63231d1cd0d162ac6bebb4627f045c/raw/c3d5c80d391ba4853d6a6453db38c249f40b4b8b/gistfile1.txt > linux/.config 50(cd linux; make -j32 CC=$DIR/gcc/bin/gcc) 51 52cat <<'EOF' | sed "s#DIR#$DIR#g" | sed "s#NVM#$NVM#g" > config 53{ 54 "name": "demo", 55 "target": "linux/amd64", 56 "http": ":20000", 57 "workdir": "DIR/workdir", 58 "vmlinux": "DIR/linux/vmlinux", 59 "syzkaller": "DIR/gopath/src/github.com/google/syzkaller", 60 "image": "DIR/wheezy.img", 61 "sshkey": "DIR/wheezy.img.key", 62 "sandbox": "none", 63 "procs": 8, 64 "type": "qemu", 65 "vm": { 66 "count": NVM, 67 "cpu": 4, 68 "mem": 2048, 69 "kernel": "DIR/linux/arch/x86/boot/bzImage" 70 } 71} 72EOF 73 74gopath/src/github.com/google/syzkaller/bin/syz-manager -config config 75