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Fix Gossip Penalties During Optimistic Sync Window (#3350)

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## Issue Addressed
* #3344 

## Proposed Changes

There are a number of cases during block processing where we might get an `ExecutionPayloadError` but we shouldn't penalize peers. We were forgetting to enumerate all of the non-penalizing errors in every single match statement where we are making that decision. I created a function to make it explicit when we should and should not penalize peers and I used that function in all places where this logic is needed. This way we won't make the same mistake if we add another variant of `ExecutionPayloadError` in the future.
This commit is contained in:
ethDreamer 2022-07-20 20:59:38 +00:00
parent 6d8dfc9eee
commit 7c3ff903ca
3 changed files with 28 additions and 27 deletions
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23
beacon_node/beacon_chain/src/block_verification.rs
View File

@ -335,17 +335,32 @@ pub enum ExecutionPayloadError {
terminal_block_hash: ExecutionBlockHash,
payload_parent_hash: ExecutionBlockHash,
},
/// The execution node failed to provide a parent block to a known block. This indicates an
/// issue with the execution node.
/// The execution node is syncing but we fail the conditions for optimistic sync
///
/// ## Peer scoring
///
/// The peer is not necessarily invalid.
PoWParentMissing(ExecutionBlockHash),
/// The execution node is syncing but we fail the conditions for optimistic sync
UnverifiedNonOptimisticCandidate,
}
impl ExecutionPayloadError {
pub fn penalize_peer(&self) -> bool {
// This match statement should never have a default case so that we are
// always forced to consider here whether or not to penalize a peer when
// we add a new error condition.
match self {
ExecutionPayloadError::NoExecutionConnection => false,
ExecutionPayloadError::RequestFailed(_) => false,
ExecutionPayloadError::RejectedByExecutionEngine { .. } => true,
ExecutionPayloadError::InvalidPayloadTimestamp { .. } => true,
ExecutionPayloadError::InvalidTerminalPoWBlock { .. } => true,
ExecutionPayloadError::InvalidActivationEpoch { .. } => true,
ExecutionPayloadError::InvalidTerminalBlockHash { .. } => true,
ExecutionPayloadError::UnverifiedNonOptimisticCandidate => false,
}
}
}
impl From<execution_layer::Error> for ExecutionPayloadError {
fn from(e: execution_layer::Error) -> Self {
ExecutionPayloadError::RequestFailed(e)

12
beacon_node/network/src/beacon_processor/worker/gossip_methods.rs
View File

@ -6,8 +6,7 @@ use beacon_chain::{
observed_operations::ObservationOutcome,
sync_committee_verification::{self, Error as SyncCommitteeError},
validator_monitor::get_block_delay_ms,
BeaconChainError, BeaconChainTypes, BlockError, ExecutionPayloadError, ForkChoiceError,
GossipVerifiedBlock,
BeaconChainError, BeaconChainTypes, BlockError, ForkChoiceError, GossipVerifiedBlock,
};
use lighthouse_network::{Client, MessageAcceptance, MessageId, PeerAction, PeerId, ReportSource};
use slog::{crit, debug, error, info, trace, warn};
@ -776,9 +775,7 @@ impl<T: BeaconChainTypes> Worker<T> {
return None;
}
// TODO(merge): reconsider peer scoring for this event.
Err(e @BlockError::ExecutionPayloadError(ExecutionPayloadError::RequestFailed(_)))
| Err(e @ BlockError::ExecutionPayloadError(ExecutionPayloadError::UnverifiedNonOptimisticCandidate))
| Err(e @BlockError::ExecutionPayloadError(ExecutionPayloadError::NoExecutionConnection)) => {
Err(ref e @BlockError::ExecutionPayloadError(ref epe)) if !epe.penalize_peer() => {
debug!(self.log, "Could not verify block for gossip, ignoring the block";
"error" => %e);
self.propagate_validation_result(message_id, peer_id, MessageAcceptance::Ignore);
@ -951,10 +948,7 @@ impl<T: BeaconChainTypes> Worker<T> {
);
self.send_sync_message(SyncMessage::UnknownBlock(peer_id, block));
}
Err(e @ BlockError::ExecutionPayloadError(ExecutionPayloadError::RequestFailed(_)))
| Err(
e @ BlockError::ExecutionPayloadError(ExecutionPayloadError::NoExecutionConnection),
) => {
Err(ref e @ BlockError::ExecutionPayloadError(ref epe)) if !epe.penalize_peer() => {
debug!(
self.log,
"Failed to verify execution payload";

20
beacon_node/network/src/sync/block_lookups/mod.rs
View File

@ -1,7 +1,7 @@
use std::collections::hash_map::Entry;
use std::time::Duration;
use beacon_chain::{BeaconChainTypes, BlockError, ExecutionPayloadError};
use beacon_chain::{BeaconChainTypes, BlockError};
use fnv::FnvHashMap;
use lighthouse_network::{PeerAction, PeerId};
use lru_cache::LRUTimeCache;
@ -435,17 +435,12 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
BlockError::ParentUnknown(block) => {
self.search_parent(block, peer_id, cx);
}
e @ BlockError::ExecutionPayloadError(ExecutionPayloadError::RequestFailed(
_,
))
| e @ BlockError::ExecutionPayloadError(
ExecutionPayloadError::NoExecutionConnection,
) => {
ref e @ BlockError::ExecutionPayloadError(ref epe) if !epe.penalize_peer() => {
// These errors indicate that the execution layer is offline
// and failed to validate the execution payload. Do not downscore peer.
debug!(
self.log,
"Single block lookup failed. Execution layer is offline";
"Single block lookup failed. Execution layer is offline / unsynced / misconfigured";
"root" => %root,
"error" => ?e
);
@ -549,12 +544,9 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
}
}
}
BlockProcessResult::Err(
e @ BlockError::ExecutionPayloadError(ExecutionPayloadError::RequestFailed(_)),
)
| BlockProcessResult::Err(
e @ BlockError::ExecutionPayloadError(ExecutionPayloadError::NoExecutionConnection),
) => {
ref e @ BlockProcessResult::Err(BlockError::ExecutionPayloadError(ref epe))
if !epe.penalize_peer() =>
{
// These errors indicate that the execution layer is offline
// and failed to validate the execution payload. Do not downscore peer.
debug!(