Ethereum consensus client in Rust
434386774e
## Issue Addressed There was a [`VecDeque` bug](https://github.com/rust-lang/rust/issues/108453) in some recent versions of the Rust standard library (1.67.0 & 1.67.1) that could cause Lighthouse to panic (reported by `@Sea Monkey` on discord). See full logs below. The issue was likely introduced in Rust 1.67.0 and [fixed](https://github.com/rust-lang/rust/pull/108475) in 1.68, and we were able to reproduce the panic ourselves using [@michaelsproul's fuzz tests](https://github.com/michaelsproul/lighthouse/blob/fuzz-lru-time-cache/beacon_node/lighthouse_network/src/peer_manager/fuzz.rs#L111) on both Rust 1.67.0 and 1.67.1. Users that uses our Docker images or binaries are unlikely affected, as our Docker images were built with `1.66`, and latest binaries were built with latest stable (`1.68.2`). It likely impacts user that builds from source using Rust versions 1.67.x. ## Proposed Changes Bump Rust version (MSRV) to latest stable `1.68.2`. ## Additional Info From `@Sea Monkey` on Lighthouse Discord: > Crash on goerli using `unstable` `dd124b2d6804d02e4e221f29387a56775acccd08` ``` thread 'tokio-runtime-worker' panicked at 'Key must exist', /mnt/goerli/goerli/lighthouse/common/lru_cache/src/time.rs:68:28 stack backtrace: Apr 15 09:37:36.993 WARN Peer sent invalid block in single block lookup, peer_id: 16Uiu2HAm6ZuyJpVpR6y51X4Enbp8EhRBqGycQsDMPX7e5XfPYznG, error: WouldRevertFinalizedSlot { block_slot: Slot(5420212), finalized_slot: Slot(5420224) }, root: 0x10f6…3165, service: sync 0: rust_begin_unwind at /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/std/src/panicking.rs:575:5 1: core::panicking::panic_fmt at /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/panicking.rs:64:14 2: core::panicking::panic_display at /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/panicking.rs:135:5 3: core::panicking::panic_str at /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/panicking.rs:119:5 4: core::option::expect_failed at /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/option.rs:1879:5 5: lru_cache::time::LRUTimeCache<Key>::raw_remove 6: lighthouse_network::peer_manager::PeerManager<TSpec>::handle_ban_operation 7: lighthouse_network::peer_manager::PeerManager<TSpec>::handle_score_action 8: lighthouse_network::peer_manager::PeerManager<TSpec>::report_peer 9: network::service::NetworkService<T>::spawn_service::{{closure}} 10: <futures_util::future::select::Select<A,B> as core::future::future::Future>::poll 11: <futures_util::future::future::map::Map<Fut,F> as core::future::future::Future>::poll 12: <futures_util::future::future::flatten::Flatten<Fut,<Fut as core::future::future::Future>::Output> as core::future::future::Future>::poll 13: tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut 14: tokio::runtime::task::core::Core<T,S>::poll 15: tokio::runtime::task::harness::Harness<T,S>::poll 16: tokio::runtime::scheduler::multi_thread::worker::Context::run_task 17: tokio::runtime::scheduler::multi_thread::worker::Context::run 18: tokio::macros::scoped_tls::ScopedKey<T>::set 19: tokio::runtime::scheduler::multi_thread::worker::run 20: tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut 21: tokio::runtime::task::core::Core<T,S>::poll 22: tokio::runtime::task::harness::Harness<T,S>::poll 23: tokio::runtime::blocking::pool::Inner::run note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. Apr 15 09:37:37.069 INFO Saved DHT state service: network Apr 15 09:37:37.070 INFO Network service shutdown service: network Apr 15 09:37:37.132 CRIT Task panic. This is a bug! advice: Please check above for a backtrace and notify the developers, message: <none>, task_name: network Apr 15 09:37:37.132 INFO Internal shutdown received reason: Panic (fatal error) Apr 15 09:37:37.133 INFO Shutting down.. reason: Failure("Panic (fatal error)") Apr 15 09:37:37.135 WARN Unable to free worker error: channel closed, msg: did not free worker, shutdown may be underway Apr 15 09:37:39.350 INFO Saved beacon chain to disk service: beacon Panic (fatal error) ``` |
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|---|---|---|
| .cargo | ||
| .github | ||
| account_manager | ||
| beacon_node | ||
| book | ||
| boot_node | ||
| common | ||
| consensus | ||
| crypto | ||
| database_manager | ||
| lcli | ||
| lighthouse | ||
| scripts | ||
| slasher | ||
| testing | ||
| validator_client | ||
| watch | ||
| .dockerignore | ||
| .editorconfig | ||
| .gitignore | ||
| .gitmodules | ||
| bors.toml | ||
| Cargo.lock | ||
| Cargo.toml | ||
| CONTRIBUTING.md | ||
| Cross.toml | ||
| Dockerfile | ||
| Dockerfile.cross | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| SECURITY.md | ||
Lighthouse: Ethereum consensus client
An open-source Ethereum consensus client, written in Rust and maintained by Sigma Prime.
Overview
Lighthouse is:
- Ready for use on Ethereum consensus mainnet.
- Fully open-source, licensed under Apache 2.0.
- Security-focused. Fuzzing techniques have been continuously applied and several external security reviews have been performed.
- Built in Rust, a modern language providing unique safety guarantees and excellent performance (comparable to C++).
- Funded by various organisations, including Sigma Prime, the Ethereum Foundation, ConsenSys, the Decentralization Foundation and private individuals.
- Actively involved in the specification and security analysis of the Ethereum proof-of-stake consensus specification.
Staking Deposit Contract
The Lighthouse team acknowledges
0x00000000219ab540356cBB839Cbe05303d7705Fa
as the canonical staking deposit contract address.
Documentation
The Lighthouse Book contains information for users and developers.
The Lighthouse team maintains a blog at lighthouse-blog.sigmaprime.io which contains periodical progress updates, roadmap insights and interesting findings.
Branches
Lighthouse maintains two permanent branches:
stable: Always points to the latest stable release.- This is ideal for most users.
unstable: Used for development, contains the latest PRs.- Developers should base their PRs on this branch.
Contributing
Lighthouse welcomes contributors.
If you are looking to contribute, please head to the Contributing section of the Lighthouse book.
Contact
The best place for discussion is the Lighthouse Discord server.
Sign up to the Lighthouse Development Updates mailing list for email notifications about releases, network status and other important information.
Encrypt sensitive messages using our PGP key.
Donations
Lighthouse is an open-source project and a public good. Funding public goods is hard and we're grateful for the donations we receive from the community via:
- Gitcoin Grants.
- Ethereum address:
0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b(donation.sigmaprime.eth).