core: improve contextual information on core errors (#21869)

core/blockchain_test.go

@@ -439,7 +439,7 @@ func testBadHashes(t *testing.T, full bool) {
 
 		_, err = blockchain.InsertHeaderChain(headers, 1)
 	}
-	if err != ErrBlacklistedHash {
+	if !errors.Is(err, ErrBlacklistedHash) {
 		t.Errorf("error mismatch: have: %v, want: %v", err, ErrBlacklistedHash)
 	}
 }

core/state_processor.go

@@ -120,7 +120,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, tra
 		statedb.SetTxContext(tx.Hash(), i)
 		receipt, gas, err, tokenFeeUsed := applyTransaction(p.config, balanceFee, gp, statedb, coinbaseOwner, blockNumber, header.BaseFee, blockHash, tx, usedGas, vmenv)
 		if err != nil {
-			return nil, nil, 0, err
+			return nil, nil, 0, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err)
 		}
 		receipts = append(receipts, receipt)
 		allLogs = append(allLogs, receipt.Logs...)

core/state_transition.go

@@ -17,7 +17,6 @@
 package core
 
 import (
-	"errors"
 	"fmt"
 	"math"
 	"math/big"
@@ -32,10 +31,6 @@ import (
 
 var emptyCodeHash = crypto.Keccak256Hash(nil)
 
-var (
-	errInsufficientBalanceForGas = errors.New("insufficient balance to pay for gas")
-)
-
 /*
 The State Transitioning Model
 

light/lightchain_test.go

@@ -18,6 +18,7 @@ package light
 
 import (
 	"context"
+	"errors"
 	"math/big"
 	"testing"
 
@@ -317,7 +318,7 @@ func TestBadHeaderHashes(t *testing.T) {
 	var err error
 	headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 4}, 10)
 	core.BadHashes[headers[2].Hash()] = true
-	if _, err = bc.InsertHeaderChain(headers, 1); err != core.ErrBlacklistedHash {
+	if _, err = bc.InsertHeaderChain(headers, 1); !errors.Is(err, core.ErrBlacklistedHash) {
 		t.Errorf("error mismatch: have: %v, want %v", err, core.ErrBlacklistedHash)
 	}
 }