Step 3: Errors about hydra HOT 18 CLOSED

Hi @jahidhasanlinix
I tried building hydra on a clean slate Ubuntu 20.04 machine, but could not reproduce the issue.
Could you please share your environment?

from hydra.

What is the output of stat /home/hydra/src/lkl?

src/dep.sh should install all necessary libraries, and then running make build-btrfs-imgwrp under src should compile everything.

from hydra.

@squizz617

*** Configuration file ".config" not found!
***
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
***
make[2]: *** [scripts/kconfig/Makefile:69: syncconfig] Error 1
make[1]: *** [Makefile:538: syncconfig] Error 2
Makefile:595: include/config/auto.conf: No such file or directory
make: *** [Makefile:635: include/config/auto.conf] Error 2

from hydra.

Something seems off..
As shown in the error message, the build script clones https://github.com/sslab-gatech/lkl.git to /home/hydra/src/lkl. If your system does not have /home/hydra/src/lkl, that could mean the build failed before cloning the repository.

Could you try starting over after cloning the latest master branch of this repository?

from hydra.

Please clone https://github.com/sslab-gatech/hydra.git to another directory, and retry building there.

from hydra.

I'm not entirely following your setup. Where did you clone hydra.git this time? In other words, where did you run git clone https://github.com/sslab-gatech/hydra.git command? The answer to these questions ought to be your new workspace directory, where you're supposed to cd src and run make build-btrfs-imgwrp command.

from hydra.

Could you follow these steps?

$ rm -rf /home/hydra
$ rm -rf /home/jahid/hydra
$ cd /home/jahid
$ git clone https://github.com/sslab-gatech/hydra.git
$ cd /home/jahid/hydra/src
$ make build-btrfs-imgwrp

Please note that you are not supposed to clone lkl yourself. The build script will do that for you.

from hydra.

dep.sh is not needed if you've already run it previously; it installs packages on your system, which remain on the system unless you explicitly uninstall them.

from hydra.

dep.sh is not needed if you've already run it previously; it installs packages on your system, which remain on the system unless you explicitly uninstall them.

Seems like its working but at the end I am getting this error again, little different than previous one--- Is it normal behavior?

remote: Counting objects: 100% (3/3), done.
remote: Compressing objects: 100% (3/3), done.
remote: Total 6486812 (delta 0), reused 1 (delta 0), pack-reused 6486809
Receiving objects: 100% (6486812/6486812), 1.59 GiB | 50.28 MiB/s, done.
Resolving deltas: 100% (5487365/5487365), done.
Updating files: 100% (63299/63299), done.
(cd /home/jahid/hydra/src/lkl && ./compile -t btrfs -c && cd -)
/bin/sh: 1: ./compile: not found
make: *** [Makefile:52: build-lkl-btrfs] Error 127

from hydra.

That is not quite right. What's the output of ls -alh /home/jahid/hydra/src/lkl?

from hydra.

Does your system has python3? (python --version)

from hydra.

Does your system has python3? (python --version)

So I updated the python version:
python --version
Python 3.8.10

from hydra.

What about,

cd /home/jahid/hydra/src/lkl
./compile -t btrfs -c

?

from hydra.

What about,

cd /home/hydra/src/lkl
./compile -t btrfs -c

?

Seems like its working now, does the last few lines are similar to your results?

make: Leaving directory '/home/hydra/src/lkl/tools/lkl'
cp -f tools/lkl/executor tools/lkl/btrfs-executor
cp -f tools/lkl/combined tools/lkl/btrfs-combined
cp -f tools/lkl/combined-consistency tools/lkl/btrfs-combined-consistency

from hydra.

Yes, with run.py you can run the fuzzer, and let the fuzzer run for however long you want. We manually terminated the fuzzer (ctrl + c) after 12 hours in that experiment.

from hydra.

So basically there was no timer or signal to sleep it, right? It runs automatically for infinite time, something like that?

Correct. It keeps running.

the image file you run for 12 hours, may I know where it was located in your codebase

You can find the base images for each file system in src/samples/oracle/. {filesystem}-10.image are the ones used for crash consistency testing, and they are passed to the fuzzer as an argument (line 72 in src/run.py).

from hydra.

passed to the fuzzer as an argument (line 7

Great. That helps a lot. I really appreciate your help. We can close this issue now. As I do not have any question now for this issue. Thank you again.

from hydra.

My pleasure! Closing.

from hydra.