Krdytkyu

I try to run a Ubuntu in my qemu,but I always encounter errors:

[  OK  ] Started Create Static Device Nodes in /dev.

[FAILED] Failed to mount /sys/kernel/config.

See 'systemctl status sys-kernel-config.mount' for details.

[DEPEND] Dependency failed for Local File Systems.

[DEPEND] Dependency failed for Mark the need to relabel after reboot.

[FAILED] Failed to start Remount Root and Kernel File Systems.

....

[FAILED] Failed to start Raise network interfaces.

See 'systemctl status networking.service' for details.

[  OK  ] Reached target Network.

You are in emergPress Enter for maintenance

(or press Control-D to continue): 

and this a minimal Debian-stretch Linux image,the kernel I built with my config

and this is my command to run start:

qemu-system-x86_64 

  -kernel /home/hunter/Desktop/linux-4.4.33/arch/x86/boot/bzImage 

  -append "console=ttyS0 root=/dev/sda debug earlyprintk=serial slub_debug=QUZ"

  -hda stretch.img 

  -net user,hostfwd=tcp::10021-:22 -net nic 

  -enable-kvm 

  -nographic 

  -m 1G 

  -smp 2 

  -pidfile vm.pid 

  2>&1 | tee vm.log

and this is my script to creatw a image:

#!/bin/bash

# Copyright 2016 syzkaller project authors. All rights reserved.

# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.



# create-image.sh creates a minimal Debian Linux image suitable for syzkaller.



set -eux



# Create a minimal Debian distribution in a directory.

RELEASE=stretch

DIR=stretch

sudo rm -rf $DIR

mkdir -p $DIR

sudo debootstrap --include=openssh-server,curl,tar,gcc,libc6-dev,time,strace,sudo,less,psmisc,selinux-utils,policycoreutils,checkpolicy,selinux-policy-default $RELEASE $DIR

sudo chroot stretch /bin/bash -c "apt-get update; apt-get install -y curl tar time strace gcc net-tools iputils-ping make sysbench git vim screen usbutils"



# Set some defaults and enable promtless ssh to the machine for root.

sudo sed -i '/^root/ { s/:x:/::/ }' $DIR/etc/passwd

echo 'T0:23:respawn:/sbin/getty -L ttyS0 115200 vt100' | sudo tee -a $DIR/etc/inittab

printf 'nauto eth0niface eth0 inet dhcpn' | sudo tee -a $DIR/etc/network/interfaces

echo '/dev/root / ext4 defaults 0 0' | sudo tee -a $DIR/etc/fstab

echo 'debugfs /sys/kernel/debug debugfs defaults 0 0' | sudo tee -a $DIR/etc/fstab

echo 'securityfs /sys/kernel/security securityfs defaults 0 0' | sudo tee -a $DIR/etc/fstab

echo 'configfs /sys/kernel/config/ configfs defaults 0 0' | sudo tee -a $DIR/etc/fstab

echo 'binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc defaults 0 0' | sudo tee -a $DIR/etc/fstab

echo "kernel.printk = 7 4 1 3" | sudo tee -a $DIR/etc/sysctl.conf

echo 'debug.exception-trace = 0' | sudo tee -a $DIR/etc/sysctl.conf

echo "net.core.bpf_jit_enable = 1" | sudo tee -a $DIR/etc/sysctl.conf

echo "net.core.bpf_jit_kallsyms = 1" | sudo tee -a $DIR/etc/sysctl.conf

echo "net.core.bpf_jit_harden = 0" | sudo tee -a $DIR/etc/sysctl.conf

echo "kernel.softlockup_all_cpu_backtrace = 1" | sudo tee -a $DIR/etc/sysctl.conf

echo "kernel.kptr_restrict = 0" | sudo tee -a $DIR/etc/sysctl.conf

echo "kernel.watchdog_thresh = 60" | sudo tee -a $DIR/etc/sysctl.conf

echo "net.ipv4.ping_group_range = 0 65535" | sudo tee -a $DIR/etc/sysctl.conf

echo -en "127.0.0.1tlocalhostn" | sudo tee $DIR/etc/hosts

echo "nameserver 8.8.8.8" | sudo tee -a $DIR/etc/resolve.conf

echo "syzkaller" | sudo tee $DIR/etc/hostname

ssh-keygen -f $RELEASE.id_rsa -t rsa -N ''

sudo mkdir -p $DIR/root/.ssh/

cat $RELEASE.id_rsa.pub | sudo tee $DIR/root/.ssh/authorized_keys



# Build a disk image

dd if=/dev/zero of=$RELEASE.img bs=1M seek=2047 count=1

sudo mkfs.ext4 -F $RELEASE.img

sudo mkdir -p /mnt/$DIR

sudo mount -o loop $RELEASE.img /mnt/$DIR

sudo cp -a $DIR/. /mnt/$DIR/.

sudo umount /mnt/$DIR

I need your help