############ SETUP ############

$ sudo apt update

$ sudo apt install  build-essential git cscope libncurses-dev libssl-dev \
	bison flex git-email wget libelf-dev bc rsync kmod cpio pkgconf \
	devscripts dwarves vim codespell gdb golang qemu-system-x86 \
	colorized-logs qemu-utils debos

We need to start at the root of our home directory:

$ cd ~

$ git clone https://github.com/fuzzybritches0/syzrep.git

$ cd syzrep

Place the file bin/syzrep in the way of your $PATH:

Example:
$ cp bin/syzrep ${HOME}/bin

$ mkdir bugs

###############################

############ USAGE ############

$ mkdir ./bugs/TITLE_OF_SYZKALLER_BUG

$ cd ./bugs/TITLE-OF-SYZKALLER_BUG

# next we create a template file
$ syzrep crc

change created file syzrep.rc accordingly:

File: syzrep.rc:
###############################
01 # Title of syzkaller bug
02 # https://syzkaller.appspot.com/bug?id=
03 # Reported-by: [email protected]
04
05 KCONFIG_HASH=""
06 REPRODUCER_HASH=""
07
08 HOST_PORT_SSH=10022
09
10 # FILTER SETTINGS
11 PATTERNS_START_REPORT=("BUG" "KASAN" "UBSAN" "WARNING" "cut here")
12 PATTERNS_OMIT_LINE=("Creating new" "filter on device" "entered blocking state" \
13	"entered forwarding state" "link becomes ready")
###############################

For the two values in line 5 and 6, you can find the hashes in the 'Crashes'
roster in the columns labelled 'Config' and 'Syz repro'.

They look like this when you copy the link address by right-clicking:
https://syzkaller.appspot.com/text?tag=KernelConfig&x=yyyyyyyyyyyyyyyy
https://syzkaller.appspot.com/text?tag=ReproSyz&x=xxxxxxxxxxxxxx

So, all you have to do is fill out those two hashes, line 1, 2 and 3, also.

Finally run:

$ syzrep all

If you want to use gdb:

$ syzrep deb

Open another terminal:

$ syzrep gdb

The reproducer will start automatically and the state of the machine is saved
before the reproducer starts. If you want to repeat from the start do:

$ syzrep qem l

To find more help just type:

$ syzrep

###############################