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Made changes in the ssh config and netbsd sources part

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Siddharth M 2019-02-12 17:04:29 +05:30 committed by Dmitry Vyukov
parent 5917820e51
commit b23b81cbe4
1 changed files with 18 additions and 11 deletions
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29
docs/netbsd/README.md
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@ -6,10 +6,12 @@ Instructions to set up syzkaller for a Linux Host and an amd64 NetBSD kernel.
1. Get the NetBSD kernel source (preferably HEAD).
```sh
$ mdkir $HOME/netbsd
$ cd $HOME/netbsd
$ git clone https://github.com/NetBSD/src.git
```
2. Build the tools
2. Build the tools (You will have the toolchain in $HOME/netbsd/tools)
```sh
$ cd src
$ ./build.sh -m amd64 -U -T ../tools tools
@ -17,10 +19,11 @@ Instructions to set up syzkaller for a Linux Host and an amd64 NetBSD kernel.
3. Build the Distribution (This might take a while)
```sh
$ cd src
$ ./build.sh -m amd64 -U -T ../tools -D ../dest distribution
```
At this point you should have a NetBSD distribution at `$HOME/netbsd/dest`.
## Installing and building Syzkaller on Linux Host
1. Install all the dependencies for Syzkaller (Go distribution can be downloaded from https://golang.org/dl/)
@ -31,9 +34,9 @@ Instructions to set up syzkaller for a Linux Host and an amd64 NetBSD kernel.
$ cd ~/go/src/github.com/google/syzkaller
```
3. Compile Syzkaller for NetBSD
3. Compile Syzkaller for NetBSD
```sh
$ make TARGETOS=netbsd SOURCEDIR=path/to/netbsd/src
$ make TARGETOS=netbsd SOURCEDIR=$HOME/netbsd/src
```
The above steps should have built the Syzkaller binaries for NetBSD.
@ -54,9 +57,10 @@ configure ssh.
$ ssh-keygen -t rsa
```
2. Append the following lines to `/etc/rc.conf` on the guest.
2. Append the following lines to `/etc/rc.conf` on the guest. (use `vi` editor)
```
sshd=YES
dhcpcd=YES
ifconfig_wm0="inet 10.0.2.15 netmask 255.255.255.0"
```
@ -64,6 +68,7 @@ configure ssh.
```
Port 22
ListenAddress 10.0.2.15
PermitRootLogin yes
PermitRootLogin without-password
```
@ -72,8 +77,8 @@ configure ssh.
$ ssh -p 10022 root@127.0.0.1
```
5. Copy your public key to `/root/.ssh/authorized_keys` on the guest and `reboot` the
VM.
5. Copy and paste your public key to `/root/.ssh/authorized_keys` on the guest
and `reboot` the VM.
6. After reboot make sure that the ssh is working properly. Replace the port with what
you have configured.
@ -90,6 +95,7 @@ You can compile a kernel with KASAN to increase the chances of finding bugs.
1. Make a copy of the config file
```sh
$ cd $HOME/netbsd/src
$ cp sys/arch/amd64/conf/GENERIC sys/arch/amd64/conf/SYZKALLER
```
@ -100,16 +106,17 @@ You can compile a kernel with KASAN to increase the chances of finding bugs.
#no options SVS
```
4. Compile the kernel with KASAN (Assuming you have followed the inital steps to
3. Compile the kernel with KASAN (Assuming you have followed the inital steps to
build tools)
```sh
$ cd $HOME/netbsd/src
$ ./build.sh -m amd64 -U -T ../tools -j4 kernel=SYZKALLER
```
4. Compiled kernel image should be found in `sys/arch/amd64/compile/SYZKALLER` and
should have the name `netbsd`. You need to copy it to the installed VM and reboot
the VM.
4. At this point you should have the new compiled kernel image which can be found in
`$HOME/netbsd/src/sys/arch/amd64/compile/SYZKALLER` and should have the name
`netbsd`. You need to copy it to the installed VM and reboot the VM.
## Running Syzkaller