Merge pull request #13870 from karalabe/miners-fixes

all: clean up various error handling in core and the miner

cmd/geth/main.go

@@ -161,12 +161,6 @@ func init() {
 		// Start system runtime metrics collection
 		go metrics.CollectProcessMetrics(3 * time.Second)
 
-		// This should be the only place where reporting is enabled
-		// because it is not intended to run while testing.
-		// In addition to this check, bad block reports are sent only
-		// for chains with the main network genesis block and network id 1.
-		eth.EnableBadBlockReporting = true
-
 		utils.SetupNetwork(ctx)
 		return nil
 	}

consensus/errors.go

@@ -0,0 +1,41 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package consensus
+
+import "errors"
+
+var (
+	// ErrUnknownAncestor is returned when validating a block requires an ancestor
+	// that is unknown.
+	ErrUnknownAncestor = errors.New("unknown ancestor")
+
+	// ErrLargeBlockTime is returned if the value of the timestamp is beyond
+	// any reasonable value.
+	ErrLargeBlockTime = errors.New("timestamp too big")
+
+	// ErrZeroBlockTime is returned if the block's timestamp is the same as the one
+	// its parent has.
+	ErrZeroBlockTime = errors.New("timestamp equals parent's")
+
+	// ErrFutureBlock is returned when a block's timestamp is in the future according
+	// to the current node.
+	ErrFutureBlock = errors.New("block in the future")
+
+	// ErrInvalidNumber is returned if a block's number doesn't equal it's parent's
+	// plus one.
+	ErrInvalidNumber = errors.New("invalid block number")
+)

consensus/ethash/consensus.go

@@ -43,11 +43,6 @@ var (
 
 var (
 	ErrInvalidChain      = errors.New("invalid header chain")
-	ErrParentUnknown       = errors.New("parent not known locally")
-	ErrFutureBlock         = errors.New("block in the future")
-	ErrLargeBlockTimestamp = errors.New("timestamp too big")
-	ErrZeroBlockTime       = errors.New("timestamp equals parent's")
-	ErrInvalidNumber       = errors.New("invalid block number")
 	ErrTooManyUncles     = errors.New("too many uncles")
 	ErrDuplicateUncle    = errors.New("duplicate uncle")
 	ErrUncleIsAncestor   = errors.New("uncle is ancestor")
@@ -72,7 +67,7 @@ func (ethash *Ethash) VerifyHeader(chain consensus.ChainReader, header *types.He
 	}
 	parent := chain.GetHeader(header.ParentHash, number-1)
 	if parent == nil {
-		return ErrParentUnknown
+		return consensus.ErrUnknownAncestor
 	}
 	// Sanity checks passed, do a proper verification
 	return ethash.verifyHeader(chain, header, parent, false, seal)
@@ -125,7 +120,7 @@ func (ethash *Ethash) VerifyHeaders(chain consensus.ChainReader, headers []*type
 				case chain.GetHeader(headers[index].Hash(), headers[index].Number.Uint64()-1) != nil:
 					outputs <- result{index: index, err: nil}
 				case parent == nil:
-					failure = ErrParentUnknown
+					failure = consensus.ErrUnknownAncestor
 					outputs <- result{index: index, err: failure}
 				default:
 					failure = ethash.verifyHeader(chain, headers[index], parent, false, seals[index])
@@ -254,15 +249,15 @@ func (ethash *Ethash) verifyHeader(chain consensus.ChainReader, header, parent *
 	// Verify the header's timestamp
 	if uncle {
 		if header.Time.Cmp(math.MaxBig256) > 0 {
-			return ErrLargeBlockTimestamp
+			return consensus.ErrLargeBlockTime
 		}
 	} else {
 		if header.Time.Cmp(big.NewInt(time.Now().Unix())) > 0 {
-			return ErrFutureBlock
+			return consensus.ErrFutureBlock
 		}
 	}
 	if header.Time.Cmp(parent.Time) <= 0 {
-		return ErrZeroBlockTime
+		return consensus.ErrZeroBlockTime
 	}
 	// Verify the block's difficulty based in it's timestamp and parent's difficulty
 	expected := CalcDifficulty(chain.Config(), header.Time.Uint64(), parent.Time.Uint64(), parent.Number, parent.Difficulty)
@@ -282,7 +277,7 @@ func (ethash *Ethash) verifyHeader(chain consensus.ChainReader, header, parent *
 	}
 	// Verify that the block number is parent's +1
 	if diff := new(big.Int).Sub(header.Number, parent.Number); diff.Cmp(big.NewInt(1)) != 0 {
-		return ErrInvalidNumber
+		return consensus.ErrInvalidNumber
 	}
 	// Verify the engine specific seal securing the block
 	if seal {
@@ -449,7 +444,7 @@ func (ethash *Ethash) VerifySeal(chain consensus.ChainReader, header *types.Head
 func (ethash *Ethash) Prepare(chain consensus.ChainReader, header *types.Header) error {
 	parent := chain.GetHeader(header.ParentHash, header.Number.Uint64()-1)
 	if parent == nil {
-		return ErrParentUnknown
+		return consensus.ErrUnknownAncestor
 	}
 	header.Difficulty = CalcDifficulty(chain.Config(), header.Time.Uint64(),
 		parent.Time.Uint64(), parent.Number, parent.Difficulty)

core/block_validator.go

@@ -54,15 +54,15 @@ func (v *BlockValidator) ValidateBody(block *types.Block) error {
 	// Check whether the block's known, and if not, that it's linkable
 	if v.bc.HasBlock(block.Hash()) {
 		if _, err := state.New(block.Root(), v.bc.chainDb); err == nil {
-			return &KnownBlockError{block.Number(), block.Hash()}
+			return ErrKnownBlock
 		}
 	}
 	parent := v.bc.GetBlock(block.ParentHash(), block.NumberU64()-1)
 	if parent == nil {
-		return ParentError(block.ParentHash())
+		return consensus.ErrUnknownAncestor
 	}
 	if _, err := state.New(parent.Root(), v.bc.chainDb); err != nil {
-		return ParentError(block.ParentHash())
+		return consensus.ErrUnknownAncestor
 	}
 	// Header validity is known at this point, check the uncles and transactions
 	header := block.Header()
@@ -82,10 +82,10 @@ func (v *BlockValidator) ValidateBody(block *types.Block) error {
 // transition, such as amount of used gas, the receipt roots and the state root
 // itself. ValidateState returns a database batch if the validation was a success
 // otherwise nil and an error is returned.
-func (v *BlockValidator) ValidateState(block, parent *types.Block, statedb *state.StateDB, receipts types.Receipts, usedGas *big.Int) (err error) {
+func (v *BlockValidator) ValidateState(block, parent *types.Block, statedb *state.StateDB, receipts types.Receipts, usedGas *big.Int) error {
 	header := block.Header()
 	if block.GasUsed().Cmp(usedGas) != 0 {
-		return ValidationError(fmt.Sprintf("invalid gas used (remote: %v local: %v)", block.GasUsed(), usedGas))
+		return fmt.Errorf("invalid gas used (remote: %v local: %v)", block.GasUsed(), usedGas)
 	}
 	// Validate the received block's bloom with the one derived from the generated receipts.
 	// For valid blocks this should always validate to true.

core/blockchain.go

@@ -831,7 +831,7 @@ func (self *BlockChain) WriteBlock(block *types.Block) (status WriteStatus, err
 	// Calculate the total difficulty of the block
 	ptd := self.GetTd(block.ParentHash(), block.NumberU64()-1)
 	if ptd == nil {
-		return NonStatTy, ParentError(block.ParentHash())
+		return NonStatTy, consensus.ErrUnknownAncestor
 	}
 	// Make sure no inconsistent state is leaked during insertion
 	self.mu.Lock()
@@ -918,9 +918,8 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
 		}
 		// If the header is a banned one, straight out abort
 		if BadHashes[block.Hash()] {
-			err := BadHashError(block.Hash())
+			self.reportBlock(block, nil, ErrBlacklistedHash)
-			self.reportBlock(block, nil, err)
+			return i, ErrBlacklistedHash
-			return i, err
 		}
 		// Wait for the block's verification to complete
 		bstart := time.Now()
@@ -930,25 +929,25 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
 			err = self.Validator().ValidateBody(block)
 		}
 		if err != nil {
-			if IsKnownBlockErr(err) {
+			if err == ErrKnownBlock {
 				stats.ignored++
 				continue
 			}
 
-			if err == BlockFutureErr {
+			if err == consensus.ErrFutureBlock {
 				// Allow up to MaxFuture second in the future blocks. If this limit
 				// is exceeded the chain is discarded and processed at a later time
 				// if given.
 				max := big.NewInt(time.Now().Unix() + maxTimeFutureBlocks)
-				if block.Time().Cmp(max) == 1 {
+				if block.Time().Cmp(max) > 0 {
-					return i, fmt.Errorf("%v: BlockFutureErr, %v > %v", BlockFutureErr, block.Time(), max)
+					return i, fmt.Errorf("future block: %v > %v", block.Time(), max)
 				}
 				self.futureBlocks.Add(block.Hash(), block)
 				stats.queued++
 				continue
 			}
 
-			if IsParentErr(err) && self.futureBlocks.Contains(block.ParentHash()) {
+			if err == consensus.ErrUnknownAncestor && self.futureBlocks.Contains(block.ParentHash()) {
 				self.futureBlocks.Add(block.Hash(), block)
 				stats.queued++
 				continue

core/blockchain_test.go

@@ -126,7 +126,7 @@ func testBlockChainImport(chain types.Blocks, blockchain *BlockChain) error {
 			err = blockchain.validator.ValidateBody(block)
 		}
 		if err != nil {
-			if IsKnownBlockErr(err) {
+			if err == ErrKnownBlock {
 				continue
 			}
 			return err
@@ -441,8 +441,8 @@ func testBadHashes(t *testing.T, full bool) {
 		BadHashes[headers[2].Hash()] = true
 		_, err = bc.InsertHeaderChain(headers, 1)
 	}
-	if !IsBadHashError(err) {
+	if err != ErrBlacklistedHash {
-		t.Errorf("error mismatch: want: BadHashError, have: %v", err)
+		t.Errorf("error mismatch: have: %v, want: %v", err, ErrBlacklistedHash)
 	}
 }
 

core/dao.go

@@ -18,6 +18,7 @@ package core
 
 import (
 	"bytes"
+	"fmt"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/core/state"
@@ -46,11 +47,11 @@ func ValidateDAOHeaderExtraData(config *params.ChainConfig, header *types.Header
 	// Depending whether we support or oppose the fork, validate the extra-data contents
 	if config.DAOForkSupport {
 		if !bytes.Equal(header.Extra, params.DAOForkBlockExtra) {
-			return ValidationError("DAO pro-fork bad block extra-data: 0x%x", header.Extra)
+			return fmt.Errorf("DAO pro-fork bad block extra-data: 0x%x", header.Extra)
 		}
 	} else {
 		if bytes.Equal(header.Extra, params.DAOForkBlockExtra) {
-			return ValidationError("DAO no-fork bad block extra-data: 0x%x", header.Extra)
+			return fmt.Errorf("DAO no-fork bad block extra-data: 0x%x", header.Extra)
 		}
 	}
 	// All ok, header has the same extra-data we expect

core/error.go

@@ -16,188 +16,16 @@
 
 package core
 
-import (
+import "errors"
-	"errors"
-	"fmt"
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-)
 
 var (
-	BlockNumberErr   = errors.New("block number invalid")
+	// ErrKnownBlock is returned when a block to import is already known locally.
-	BlockFutureErr   = errors.New("block time is in the future")
+	ErrKnownBlock = errors.New("block already known")
-	BlockTSTooBigErr = errors.New("block time too big")
+
-	BlockEqualTSErr  = errors.New("block time stamp equal to previous")
+	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
+	// by a transaction is higher than what's left in the block.
+	ErrGasLimitReached = errors.New("gas limit reached")
+
+	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
+	ErrBlacklistedHash = errors.New("blacklisted hash")
 )
-
-// Parent error. In case a parent is unknown this error will be thrown
-// by the block manager
-type ParentErr struct {
-	Message string
-}
-
-func (err *ParentErr) Error() string {
-	return err.Message
-}
-
-func ParentError(hash common.Hash) error {
-	return &ParentErr{Message: fmt.Sprintf("Block's parent unknown %x", hash)}
-}
-
-func IsParentErr(err error) bool {
-	_, ok := err.(*ParentErr)
-	return ok
-}
-
-type UncleErr struct {
-	Message string
-}
-
-func (err *UncleErr) Error() string {
-	return err.Message
-}
-
-func UncleError(format string, v ...interface{}) error {
-	return &UncleErr{Message: fmt.Sprintf(format, v...)}
-}
-
-func IsUncleErr(err error) bool {
-	_, ok := err.(*UncleErr)
-	return ok
-}
-
-// Block validation error. If any validation fails, this error will be thrown
-type ValidationErr struct {
-	Message string
-}
-
-func (err *ValidationErr) Error() string {
-	return err.Message
-}
-
-func ValidationError(format string, v ...interface{}) *ValidationErr {
-	return &ValidationErr{Message: fmt.Sprintf(format, v...)}
-}
-
-func IsValidationErr(err error) bool {
-	_, ok := err.(*ValidationErr)
-	return ok
-}
-
-type NonceErr struct {
-	Message string
-	Is, Exp uint64
-}
-
-func (err *NonceErr) Error() string {
-	return err.Message
-}
-
-func NonceError(is, exp uint64) *NonceErr {
-	return &NonceErr{Message: fmt.Sprintf("Transaction w/ invalid nonce. tx=%d  state=%d)", is, exp), Is: is, Exp: exp}
-}
-
-func IsNonceErr(err error) bool {
-	_, ok := err.(*NonceErr)
-	return ok
-}
-
-// BlockNonceErr indicates that a block's nonce is invalid.
-type BlockNonceErr struct {
-	Number *big.Int
-	Hash   common.Hash
-	Nonce  uint64
-}
-
-func (err *BlockNonceErr) Error() string {
-	return fmt.Sprintf("nonce for #%d [%x…] is invalid (got %d)", err.Number, err.Hash, err.Nonce)
-}
-
-// IsBlockNonceErr returns true for invalid block nonce errors.
-func IsBlockNonceErr(err error) bool {
-	_, ok := err.(*BlockNonceErr)
-	return ok
-}
-
-type InvalidTxErr struct {
-	Message string
-}
-
-func (err *InvalidTxErr) Error() string {
-	return err.Message
-}
-
-func InvalidTxError(err error) *InvalidTxErr {
-	return &InvalidTxErr{fmt.Sprintf("%v", err)}
-}
-
-func IsInvalidTxErr(err error) bool {
-	_, ok := err.(*InvalidTxErr)
-	return ok
-}
-
-type TDError struct {
-	a, b *big.Int
-}
-
-func (self *TDError) Error() string {
-	return fmt.Sprintf("incoming chain has a lower or equal TD (%v <= %v)", self.a, self.b)
-}
-func IsTDError(e error) bool {
-	_, ok := e.(*TDError)
-	return ok
-}
-
-type KnownBlockError struct {
-	number *big.Int
-	hash   common.Hash
-}
-
-func (self *KnownBlockError) Error() string {
-	return fmt.Sprintf("block %v already known (%x)", self.number, self.hash[0:4])
-}
-func IsKnownBlockErr(e error) bool {
-	_, ok := e.(*KnownBlockError)
-	return ok
-}
-
-type ValueTransferError struct {
-	message string
-}
-
-func ValueTransferErr(str string, v ...interface{}) *ValueTransferError {
-	return &ValueTransferError{fmt.Sprintf(str, v...)}
-}
-
-func (self *ValueTransferError) Error() string {
-	return self.message
-}
-func IsValueTransferErr(e error) bool {
-	_, ok := e.(*ValueTransferError)
-	return ok
-}
-
-type BadHashError common.Hash
-
-func (h BadHashError) Error() string {
-	return fmt.Sprintf("Found known bad hash in chain %x", h[:])
-}
-
-func IsBadHashError(err error) bool {
-	_, ok := err.(BadHashError)
-	return ok
-}
-
-type GasLimitErr struct {
-	Have, Want *big.Int
-}
-
-func IsGasLimitErr(err error) bool {
-	_, ok := err.(*GasLimitErr)
-	return ok
-}
-
-func (err *GasLimitErr) Error() string {
-	return fmt.Sprintf("GasLimit reached. Have %d gas, transaction requires %d", err.Have, err.Want)
-}

core/gaspool.go

@@ -35,7 +35,7 @@ func (gp *GasPool) AddGas(amount *big.Int) *GasPool {
 func (gp *GasPool) SubGas(amount *big.Int) error {
 	i := (*big.Int)(gp)
 	if i.Cmp(amount) < 0 {
-		return &GasLimitErr{Have: new(big.Int).Set(i), Want: amount}
+		return ErrGasLimitReached
 	}
 	i.Sub(i, amount)
 	return nil

core/headerchain.go

@@ -137,7 +137,7 @@ func (hc *HeaderChain) WriteHeader(header *types.Header) (status WriteStatus, er
 	// Calculate the total difficulty of the header
 	ptd := hc.GetTd(header.ParentHash, number-1)
 	if ptd == nil {
-		return NonStatTy, ParentError(header.ParentHash)
+		return NonStatTy, consensus.ErrUnknownAncestor
 	}
 	localTd := hc.GetTd(hc.currentHeaderHash, hc.currentHeader.Number.Uint64())
 	externTd := new(big.Int).Add(header.Difficulty, ptd)
@@ -246,7 +246,7 @@ func (hc *HeaderChain) ValidateHeaderChain(chain []*types.Header, checkFreq int)
 		}
 		// If the header is a banned one, straight out abort
 		if BadHashes[header.Hash()] {
-			return i, BadHashError(header.Hash())
+			return i, ErrBlacklistedHash
 		}
 		// Otherwise wait for headers checks and ensure they pass
 		if err := <-results; err != nil {

core/state_transition.go

@@ -18,6 +18,7 @@ package core
 
 import (
 	"errors"
+	"fmt"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -195,26 +196,17 @@ func (self *StateTransition) buyGas() error {
 	return nil
 }
 
-func (self *StateTransition) preCheck() (err error) {
+func (self *StateTransition) preCheck() error {
 	msg := self.msg
 	sender := self.from()
 
 	// Make sure this transaction's nonce is correct
 	if msg.CheckNonce() {
 		if n := self.state.GetNonce(sender.Address()); n != msg.Nonce() {
-			return NonceError(msg.Nonce(), n)
+			return fmt.Errorf("invalid nonce: have %d, expected %d", msg.Nonce(), n)
 		}
 	}
-
+	return self.buyGas()
-	// Pre-pay gas
-	if err = self.buyGas(); err != nil {
-		if IsGasLimitErr(err) {
-			return err
-		}
-		return InvalidTxError(err)
-	}
-
-	return nil
 }
 
 // TransitionDb will transition the state by applying the current message and returning the result
@@ -233,11 +225,10 @@ func (self *StateTransition) TransitionDb() (ret []byte, requiredGas, usedGas *b
 	// TODO convert to uint64
 	intrinsicGas := IntrinsicGas(self.data, contractCreation, homestead)
 	if intrinsicGas.BitLen() > 64 {
-		return nil, nil, nil, InvalidTxError(vm.ErrOutOfGas)
+		return nil, nil, nil, vm.ErrOutOfGas
 	}
-
 	if err = self.useGas(intrinsicGas.Uint64()); err != nil {
-		return nil, nil, nil, InvalidTxError(err)
+		return nil, nil, nil, err
 	}
 
 	var (
@@ -260,10 +251,9 @@ func (self *StateTransition) TransitionDb() (ret []byte, requiredGas, usedGas *b
 		// sufficient balance to make the transfer happen. The first
 		// balance transfer may never fail.
 		if vmerr == vm.ErrInsufficientBalance {
-			return nil, nil, nil, InvalidTxError(vmerr)
+			return nil, nil, nil, vmerr
 		}
 	}
-
 	requiredGas = new(big.Int).Set(self.gasUsed())
 
 	self.refundGas()

eth/bad_block.go

@@ -1,73 +0,0 @@
-// Copyright 2016 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package eth
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"net/http"
-	"time"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/rlp"
-)
-
-const (
-	// The Ethereum main network genesis block.
-	defaultGenesisHash = "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3"
-	badBlocksURL       = "https://badblocks.ethdev.com"
-)
-
-var EnableBadBlockReporting = false
-
-func sendBadBlockReport(block *types.Block, err error) {
-	if !EnableBadBlockReporting {
-		return
-	}
-
-	var (
-		blockRLP, _ = rlp.EncodeToBytes(block)
-		params      = map[string]interface{}{
-			"block":     common.Bytes2Hex(blockRLP),
-			"blockHash": block.Hash().Hex(),
-			"errortype": err.Error(),
-			"client":    "go",
-		}
-	)
-	if !block.ReceivedAt.IsZero() {
-		params["receivedAt"] = block.ReceivedAt.UTC().String()
-	}
-	if p, ok := block.ReceivedFrom.(*peer); ok {
-		params["receivedFrom"] = map[string]interface{}{
-			"enode":           fmt.Sprintf("enode://%x@%v", p.ID(), p.RemoteAddr()),
-			"name":            p.Name(),
-			"protocolVersion": p.version,
-		}
-	}
-	jsonStr, _ := json.Marshal(map[string]interface{}{"method": "eth_badBlock", "id": "1", "jsonrpc": "2.0", "params": []interface{}{params}})
-	client := http.Client{Timeout: 8 * time.Second}
-	resp, err := client.Post(badBlocksURL, "application/json", bytes.NewReader(jsonStr))
-	if err != nil {
-		log.Debug("Failed to report bad block", "err", err)
-		return
-	}
-	log.Debug("Bad block report posted", "status", resp.StatusCode)
-	resp.Body.Close()
-}

eth/fetcher/fetcher.go

@@ -23,7 +23,7 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
 	"gopkg.in/karalabe/cookiejar.v2/collections/prque"
@@ -654,7 +654,7 @@ func (f *Fetcher) insert(peer string, block *types.Block) {
 			propBroadcastOutTimer.UpdateSince(block.ReceivedAt)
 			go f.broadcastBlock(block, true)
 
-		case core.BlockFutureErr:
+		case consensus.ErrFutureBlock:
 			// Weird future block, don't fail, but neither propagate
 
 		default:

eth/handler.go

@@ -92,8 +92,6 @@ type ProtocolManager struct {
 	// wait group is used for graceful shutdowns during downloading
 	// and processing
 	wg sync.WaitGroup
-
-	badBlockReportingEnabled bool
 }
 
 // NewProtocolManager returns a new ethereum sub protocol manager. The Ethereum sub protocol manages peers capable
@@ -163,7 +161,7 @@ func NewProtocolManager(config *params.ChainConfig, fastSync bool, networkId int
 	// Construct the different synchronisation mechanisms
 	manager.downloader = downloader.New(downloader.FullSync, chaindb, manager.eventMux, blockchain.HasHeader, blockchain.HasBlockAndState, blockchain.GetHeaderByHash,
 		blockchain.GetBlockByHash, blockchain.CurrentHeader, blockchain.CurrentBlock, blockchain.CurrentFastBlock, blockchain.FastSyncCommitHead,
-		blockchain.GetTdByHash, blockchain.InsertHeaderChain, manager.insertChain, blockchain.InsertReceiptChain, blockchain.Rollback,
+		blockchain.GetTdByHash, blockchain.InsertHeaderChain, manager.blockchain.InsertChain, blockchain.InsertReceiptChain, blockchain.Rollback,
 		manager.removePeer)
 
 	validator := func(header *types.Header) error {
@@ -174,26 +172,13 @@ func NewProtocolManager(config *params.ChainConfig, fastSync bool, networkId int
 	}
 	inserter := func(blocks types.Blocks) (int, error) {
 		atomic.StoreUint32(&manager.synced, 1) // Mark initial sync done on any fetcher import
-		return manager.insertChain(blocks)
+		return manager.blockchain.InsertChain(blocks)
 	}
 	manager.fetcher = fetcher.New(blockchain.GetBlockByHash, validator, manager.BroadcastBlock, heighter, inserter, manager.removePeer)
 
-	if blockchain.Genesis().Hash().Hex() == defaultGenesisHash && networkId == 1 {
-		log.Debug("Bad block reporting is enabled")
-		manager.badBlockReportingEnabled = true
-	}
-
 	return manager, nil
 }
 
-func (pm *ProtocolManager) insertChain(blocks types.Blocks) (i int, err error) {
-	i, err = pm.blockchain.InsertChain(blocks)
-	if pm.badBlockReportingEnabled && core.IsValidationErr(err) && i < len(blocks) {
-		go sendBadBlockReport(blocks[i], err)
-	}
-	return i, err
-}
-
 func (pm *ProtocolManager) removePeer(id string) {
 	// Short circuit if the peer was already removed
 	peer := pm.peers.Peer(id)

les/fetcher.go

@@ -24,6 +24,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/mclock"
+	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/light"
@@ -498,7 +499,7 @@ func (f *lightFetcher) processResponse(req fetchRequest, resp fetchResponse) boo
 		headers[int(req.amount)-1-i] = header
 	}
 	if _, err := f.chain.InsertHeaderChain(headers, 1); err != nil {
-		if err == core.BlockFutureErr {
+		if err == consensus.ErrFutureBlock {
 			return true
 		}
 		log.Debug("Failed to insert header chain", "err", err)

light/lightchain_test.go

@@ -327,9 +327,8 @@ func TestBadHeaderHashes(t *testing.T) {
 	var err error
 	headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 4}, 10)
 	core.BadHashes[headers[2].Hash()] = true
-	_, err = bc.InsertHeaderChain(headers, 1)
+	if _, err = bc.InsertHeaderChain(headers, 1); err != core.ErrBlacklistedHash {
-	if !core.IsBadHashError(err) {
+		t.Errorf("error mismatch: have: %v, want %v", err, core.ErrBlacklistedHash)
-		t.Errorf("error mismatch: want: BadHashError, have: %v", err)
 	}
 }
 

miner/worker.go

@@ -279,21 +279,11 @@ func (self *worker) wait() {
 				go self.mux.Post(core.NewMinedBlockEvent{Block: block})
 			} else {
 				work.state.Commit(self.config.IsEIP158(block.Number()))
-				parent := self.chain.GetBlock(block.ParentHash(), block.NumberU64()-1)
-				if parent == nil {
-					log.Error("Invalid block found during mining")
-					continue
-				}
-				if err := self.engine.VerifyHeader(self.chain, block.Header(), false); err != nil {
-					log.Error("Invalid header on mined block", "err", err)
-					continue
-				}
 				stat, err := self.chain.WriteBlock(block)
 				if err != nil {
 					log.Error("Failed writing block to chain", "err", err)
 					continue
 				}
-
 				// update block hash since it is now available and not when the receipt/log of individual transactions were created
 				for _, r := range work.receipts {
 					for _, l := range r.Logs {
@@ -513,13 +503,13 @@ func (self *worker) commitNewWork() {
 func (self *worker) commitUncle(work *Work, uncle *types.Header) error {
 	hash := uncle.Hash()
 	if work.uncles.Has(hash) {
-		return core.UncleError("uncle not unique")
+		return fmt.Errorf("uncle not unique")
 	}
 	if !work.ancestors.Has(uncle.ParentHash) {
-		return core.UncleError(fmt.Sprintf("uncle's parent unknown (%x)", uncle.ParentHash[0:4]))
+		return fmt.Errorf("uncle's parent unknown (%x)", uncle.ParentHash[0:4])
 	}
 	if work.family.Has(hash) {
-		return core.UncleError(fmt.Sprintf("uncle already in family (%x)", hash))
+		return fmt.Errorf("uncle already in family (%x)", hash)
 	}
 	work.uncles.Add(uncle.Hash())
 	return nil
@@ -564,23 +554,23 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB
 		env.state.StartRecord(tx.Hash(), common.Hash{}, env.tcount)
 
 		err, logs := env.commitTransaction(tx, bc, gp)
-		switch {
+		switch err {
-		case core.IsGasLimitErr(err):
+		case core.ErrGasLimitReached:
 			// Pop the current out-of-gas transaction without shifting in the next from the account
 			log.Trace("Gas limit exceeded for current block", "sender", from)
 			txs.Pop()
 
-		case err != nil:
+		case nil:
-			// Pop the current failed transaction without shifting in the next from the account
-			log.Trace("Transaction failed, will be removed", "hash", tx.Hash(), "err", err)
-			env.failedTxs = append(env.failedTxs, tx)
-			txs.Pop()
-
-		default:
 			// Everything ok, collect the logs and shift in the next transaction from the same account
 			coalescedLogs = append(coalescedLogs, logs...)
 			env.tcount++
 			txs.Shift()
+
+		default:
+			// Pop the current failed transaction without shifting in the next from the account
+			log.Trace("Transaction failed, will be removed", "hash", tx.Hash(), "err", err)
+			env.failedTxs = append(env.failedTxs, tx)
+			txs.Pop()
 		}
 	}
 

tests/state_test_util.go

@@ -214,7 +214,7 @@ func RunState(chainConfig *params.ChainConfig, statedb *state.StateDB, env, tx m
 	snapshot := statedb.Snapshot()
 
 	ret, gasUsed, err := core.ApplyMessage(environment, msg, gaspool)
-	if core.IsNonceErr(err) || core.IsInvalidTxErr(err) || core.IsGasLimitErr(err) {
+	if err != nil {
 		statedb.RevertToSnapshot(snapshot)
 	}
 	statedb.Commit(chainConfig.IsEIP158(environment.Context.BlockNumber))