diff options
| -rw-r--r-- | docs/linux/setup_ubuntu-host_qemu-vm_x86-64-kernel.md | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/docs/linux/setup_ubuntu-host_qemu-vm_x86-64-kernel.md b/docs/linux/setup_ubuntu-host_qemu-vm_x86-64-kernel.md index 4ce4aefc2..0d6649ba8 100644 --- a/docs/linux/setup_ubuntu-host_qemu-vm_x86-64-kernel.md +++ b/docs/linux/setup_ubuntu-host_qemu-vm_x86-64-kernel.md @@ -30,24 +30,26 @@ make CC="$GCC/bin/gcc" defconfig make CC="$GCC/bin/gcc" kvmconfig ``` -Now we need to enable some config options required for syzkaller. -Edit `.config` file manually and enable: +Enable kernel config options required for syzkaller as described [here](kernel_configs.md). +It's not required to enable all of them, but at the very least you need: ``` +# Coverage collection. CONFIG_KCOV=y + +# Debug info for symbolization. CONFIG_DEBUG_INFO=y + +# Memory bug detector CONFIG_KASAN=y CONFIG_KASAN_INLINE=y -``` -You may also need the following for a recent linux image: - -``` +# Required for Debian Stretch CONFIG_CONFIGFS_FS=y CONFIG_SECURITYFS=y ``` -You might also want to enable some other kernel configs as described [here](kernel_configs.md). +Edit `.config` file manually and enable them (or do that through `make menuconfig` if you prefer). Since enabling these options results in more sub options being available, we need to regenerate config: @@ -121,16 +123,17 @@ Make sure the kernel boots and `sshd` starts: ``` bash qemu-system-x86_64 \ - -kernel $KERNEL/arch/x86/boot/bzImage \ - -append "console=ttyS0 root=/dev/sda earlyprintk=serial"\ - -hda $IMAGE/stretch.img \ - -net user,hostfwd=tcp::10021-:22 -net nic \ - -enable-kvm \ - -nographic \ - -m 2G \ - -smp 2 \ - -pidfile vm.pid \ - 2>&1 | tee vm.log + -m 2G \ + -smp 2 \ + -kernel $KERNEL/arch/x86/boot/bzImage \ + -append "console=ttyS0 root=/dev/sda earlyprintk=serial"\ + -drive file=$IMAGE/stretch.img,format=raw + -net -net user,host=10.0.2.10,hostfwd=tcp:127.0.0.1:10021-:22 \ + -net nic,model=e1000 \ + -enable-kvm \ + -nographic \ + -pidfile vm.pid \ + 2>&1 | tee vm.log ``` ``` |