xdp_hello example fails verifier in docker rust container

[esemeniuc]

Running the xdp_hello example with the following commands fails in:

docker run -it --privileged --network host --rm -v ~/dev/aya-book:/myapp -w /myapp rust bash

Inside the container, I ran:

rustup install nightly
rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
cargo install bpf-linker
cd examples/xdp-hello/
cargo xtask build-ebpf

Output

   Compiling xdp-hello-common v0.1.0 (/myapp/examples/xdp-hello/xdp-hello-common)
   Compiling xdp-hello v0.1.0 (/myapp/examples/xdp-hello/xdp-hello)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.26s
Error: the BPF_PROG_LOAD syscall failed. Verifier output: last insn is not an exit or jmp
verification time 9 usec
stack depth 0+0+0
processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0

Caused by:
    Invalid argument (os error 22)

Host OS: arch running 6.6.52-1-lts

[esemeniuc]

Issue: info! calls must be removed. The demo is broken due to that. See https://discord.com/channels/855676609003651072/1310568860738388059/1312632243574931517

An alternative is to use bpf_printk instead

unsafe {
    aya_ebpf::bpf_printk!(b"packet  received!");
}

To see output, open another terminal enable tracing: echo 1 | sudo tee /sys/kernel/debug/tracing/tracing_on

Then to see output sudo cat /sys/kernel/debug/tracing/trace_pipe

From another terminal, ping the interface ping 127.0.0.1

Source: https://dev.to/stevelatif/aya-rust-tutorial-part-four-xdp-hello-world-4c85

[tamird]

Does it work if you use --release?

[tamird]

The template and book have been updated to only build ebpf in release mode. Please file an issue against those if you continue to be able to reproduce.

[esemeniuc]

Yes this works, thank you very much

rustup install nightly
rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
cargo install bpf-linker
cd examples/xdp-hello/
cargo xtask build-ebpf --release
cargo build --release