GUI segmentation fault

[jlesage]

With the latest 3.2.0 version, the GUI is crashing with segmentation fault:

• The crash happen very early in the startup process.
• No issue with previous versions.
• Czkawka is compiled under Alpine Linux.
• It is run a Docker container (see https://github.com/jlesage/docker-czkawka).
• The CLI is working fine.

I'm wondering if you have any hint/idea on how to debug this crash.

Thanks!

[qarmin]

Without logs I don't see what thing could crash.
I suspect that this may be caused by OS or apps/libraries not Czkawka.

I didn't build app from docker file, but I compiled it manually on alpine image and looks that it run fine with xvfb(both release and debug build)

https://github.com/jlesage/docker-czkawka/blob/09c0246ea35a43db4ad6774a7b98b1df276ba90b/Dockerfile#L8 - I tested it on 3.14.1

Here glade files are moved to different folders
https://github.com/jlesage/docker-czkawka/blob/09c0246ea35a43db4ad6774a7b98b1df276ba90b/Dockerfile#L50-L51
https://github.com/qarmin/czkawka/tree/master/czkawka_gui/ui

[jlesage]

Without logs I don't see what thing could crash.

How can we get logs ?

I didn't build app from docker file, but I compiled it manually on alpine image and looks that it run fine with xvfb(both release and debug build)

https://github.com/jlesage/docker-czkawka/blob/09c0246ea35a43db4ad6774a7b98b1df276ba90b/Dockerfile#L8 - I tested it on 3.14.1

Which version of Alpine did you use to compile manually ? Also, are you saying that you tested the manually compiled binary with the Docker image ?

[qarmin]

I used 3.14.1(now it is available 3.14.2)

docker run -it alpine:3.14 /bin/sh

and later I just installed all dependencies just like here(commands were a little different) - https://github.com/jlesage/docker-czkawka/blob/09c0246ea35a43db4ad6774a7b98b1df276ba90b/Dockerfile#L32-L39

and after compiling I just run czkawka with command xfvb-run target/debug/czkawka_gui

[jlesage]

I'm still getting a segfault with Alpine 3.14. Here is what I did.

Use an Alpine 3.14 Docker container:

docker run --rm -ti alpine:3.14 sh

Run the following commands to build czkawka:

apk --no-cache add build-base bash curl xvfb-run gtk+3.0-dev
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | bash -s -- -y
source /root/.cargo/env
mkdir /tmp/czkawka
curl -# -L https://github.com/qarmin/czkawka/archive/3.3.1.tar.gz | tar xz --strip 1 -C /tmp/czkawka
cd /tmp/czkawka
cargo build

Finally, run the UI:

xvfb-run target/debug/czkawka_gui

And I see the crash:

Segmentation fault (core dumped)

Since you don't see the crash on your side, what are you doing differently ?

[jlesage]

The crash seems to happen when initializing GTK. I tried to run examples from https://github.com/gtk-rs/gtk-rs-core and I also got crashes. So I opened (as you have seen) the following issue: gtk-rs/gtk-rs-core#387.

[jlesage]

After more testing, I see no crash when using Rust from the Alpine repository. So it seems they fixed Rust issues on their side.

Note that Czkawka requires the latest Rust stable version (1.56.1) to compile, which is available only in the edge Alpine repo.

[qarmin]

Minimal supported Rust version at this moment is 1.53.0 - it is even tested in CI https://github.com/qarmin/czkawka/runs/4298019886?check_suite_focus=true
Probably even 1.51.0 should work

[jlesage]

Ok thanks for the precision.

I tried to compile with Rust 1.52.1 from Alpine 3.14 and it didn't work.

[jlesage]

I'm closing this issue, since we now better understand from where the crash is coming from.

[jlesage]

To add another detail: using the official Rust version and compiling with RUSTFLAGS="-C target-feature=-crt-static" also works. Rust from Alpine has been patched to use this by default.