feat: limit rollup fee in tx pool

crates/scroll/consensus/src/constants.rs

@@ -0,0 +1,4 @@
+use alloy_primitives::U256;
+
+/// The maximum value Rollup fee.
+pub const MAX_ROLLUP_FEE: U256 = U256::from_limbs([u64::MAX, 0, 0, 0]);

crates/scroll/consensus/src/lib.rs

@@ -2,9 +2,11 @@
 
 extern crate alloc;
 
+mod constants;
+pub use constants::MAX_ROLLUP_FEE;
+
 mod error;
 pub use error::ScrollConsensusError;
 
 mod validation;
-
 pub use validation::ScrollBeaconConsensus;

crates/scroll/txpool/Cargo.toml

@@ -28,6 +28,7 @@ reth-transaction-pool.workspace = true
 revm-scroll.workspace = true
 
 # reth-scroll
+reth-scroll-consensus.workspace = true
 reth-scroll-evm.workspace = true
 reth-scroll-forks.workspace = true
 reth-scroll-primitives.workspace = true

crates/scroll/txpool/src/validator.rs

@@ -6,6 +6,7 @@ use reth_primitives_traits::{
     transaction::error::InvalidTransactionError, Block, GotExpected, SealedBlock,
 };
 use reth_revm::database::StateProviderDatabase;
+use reth_scroll_consensus::MAX_ROLLUP_FEE;
 use reth_scroll_evm::{
     compute_compression_ratio, spec_id_at_timestamp_and_number, RethL1BlockInfo,
 };
@@ -181,6 +182,14 @@ where
                     return TransactionValidationOutcome::Error(*valid_tx.hash(), Box::new(err))
                 }
             };
+            // Check rollup fee is under u64::MAX.
+            if cost_addition >= MAX_ROLLUP_FEE {
+                return TransactionValidationOutcome::Invalid(
+                    valid_tx.into_transaction(),
+                    InvalidTransactionError::GasUintOverflow.into(),
+                )
+            }
+
             let cost = valid_tx.transaction().cost().saturating_add(cost_addition);
 
             // Checks for max cost