Merge branch 'ethereum:master' into master

README.md

@@ -6,7 +6,7 @@ Golang execution layer implementation of the Ethereum protocol.
 https://pkg.go.dev/badge/github.com/ethereum/go-ethereum
 )](https://pkg.go.dev/github.com/ethereum/go-ethereum?tab=doc)
 [![Go Report Card](https://goreportcard.com/badge/github.com/ethereum/go-ethereum)](https://goreportcard.com/report/github.com/ethereum/go-ethereum)
-[![Travis](https://travis-ci.com/ethereum/go-ethereum.svg?branch=master)](https://travis-ci.com/ethereum/go-ethereum)
+[![Travis](https://app.travis-ci.com/ethereum/go-ethereum.svg?branch=master)](https://app.travis-ci.com/github/ethereum/go-ethereum)
 [![Discord](https://img.shields.io/badge/discord-join%20chat-blue.svg)](https://discord.gg/nthXNEv)
 
 Automated builds are available for stable releases and the unstable master branch. Binary

core/blockchain.go

@@ -2188,6 +2188,12 @@ func (bc *BlockChain) reorg(oldHead *types.Header, newHead *types.Block) error {
 		// rewind the canonical chain to a lower point.
 		log.Error("Impossible reorg, please file an issue", "oldnum", oldBlock.Number(), "oldhash", oldBlock.Hash(), "oldblocks", len(oldChain), "newnum", newBlock.Number(), "newhash", newBlock.Hash(), "newblocks", len(newChain))
 	}
+	// Reset the tx lookup cache in case to clear stale txlookups.
+	// This is done before writing any new chain data to avoid the
+	// weird scenario that canonical chain is changed while the
+	// stale lookups are still cached.
+	bc.txLookupCache.Purge()
+
 	// Insert the new chain(except the head block(reverse order)),
 	// taking care of the proper incremental order.
 	for i := len(newChain) - 1; i >= 1; i-- {
@@ -2202,11 +2208,13 @@ func (bc *BlockChain) reorg(oldHead *types.Header, newHead *types.Block) error {
 
 	// Delete useless indexes right now which includes the non-canonical
 	// transaction indexes, canonical chain indexes which above the head.
-	indexesBatch := bc.db.NewBatch()
-	for _, tx := range types.HashDifference(deletedTxs, addedTxs) {
+	var (
+		indexesBatch = bc.db.NewBatch()
+		diffs        = types.HashDifference(deletedTxs, addedTxs)
+	)
+	for _, tx := range diffs {
 		rawdb.DeleteTxLookupEntry(indexesBatch, tx)
 	}
-
 	// Delete all hash markers that are not part of the new canonical chain.
 	// Because the reorg function does not handle new chain head, all hash
 	// markers greater than or equal to new chain head should be deleted.

core/types/transaction.go

@@ -19,6 +19,7 @@ package types
 import (
 	"bytes"
 	"errors"
+	"fmt"
 	"io"
 	"math/big"
 	"sync/atomic"
@@ -320,6 +321,7 @@ func (tx *Transaction) Cost() *big.Int {
 
 // RawSignatureValues returns the V, R, S signature values of the transaction.
 // The return values should not be modified by the caller.
+// The return values may be nil or zero, if the transaction is unsigned.
 func (tx *Transaction) RawSignatureValues() (v, r, s *big.Int) {
 	return tx.inner.rawSignatureValues()
 }
@@ -508,6 +510,9 @@ func (tx *Transaction) WithSignature(signer Signer, sig []byte) (*Transaction, e
 	if err != nil {
 		return nil, err
 	}
+	if r == nil || s == nil || v == nil {
+		return nil, fmt.Errorf("%w: r: %s, s: %s, v: %s", ErrInvalidSig, r, s, v)
+	}
 	cpy := tx.inner.copy()
 	cpy.setSignatureValues(signer.ChainID(), v, r, s)
 	return &Transaction{inner: cpy, time: tx.time}, nil

core/types/transaction_signing_test.go

@@ -18,11 +18,13 @@ package types
 
 import (
 	"errors"
+	"fmt"
 	"math/big"
 	"testing"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
@@ -136,3 +138,53 @@ func TestChainId(t *testing.T) {
 		t.Error("expected no error")
 	}
 }
+
+type nilSigner struct {
+	v, r, s *big.Int
+	Signer
+}
+
+func (ns *nilSigner) SignatureValues(tx *Transaction, sig []byte) (r, s, v *big.Int, err error) {
+	return ns.v, ns.r, ns.s, nil
+}
+
+// TestNilSigner ensures a faulty Signer implementation does not result in nil signature values or panics.
+func TestNilSigner(t *testing.T) {
+	key, _ := crypto.GenerateKey()
+	innerSigner := LatestSignerForChainID(big.NewInt(1))
+	for i, signer := range []Signer{
+		&nilSigner{v: nil, r: nil, s: nil, Signer: innerSigner},
+		&nilSigner{v: big.NewInt(1), r: big.NewInt(1), s: nil, Signer: innerSigner},
+		&nilSigner{v: big.NewInt(1), r: nil, s: big.NewInt(1), Signer: innerSigner},
+		&nilSigner{v: nil, r: big.NewInt(1), s: big.NewInt(1), Signer: innerSigner},
+	} {
+		t.Run(fmt.Sprintf("signer_%d", i), func(t *testing.T) {
+			t.Run("legacy", func(t *testing.T) {
+				legacyTx := createTestLegacyTxInner()
+				_, err := SignNewTx(key, signer, legacyTx)
+				if !errors.Is(err, ErrInvalidSig) {
+					t.Fatal("expected signature values error, no nil result or panic")
+				}
+			})
+			// test Blob tx specifically, since the signature value types changed
+			t.Run("blobtx", func(t *testing.T) {
+				blobtx := createEmptyBlobTxInner(false)
+				_, err := SignNewTx(key, signer, blobtx)
+				if !errors.Is(err, ErrInvalidSig) {
+					t.Fatal("expected signature values error, no nil result or panic")
+				}
+			})
+		})
+	}
+}
+
+func createTestLegacyTxInner() *LegacyTx {
+	return &LegacyTx{
+		Nonce:    uint64(0),
+		To:       nil,
+		Value:    big.NewInt(0),
+		Gas:      params.TxGas,
+		GasPrice: big.NewInt(params.GWei),
+		Data:     nil,
+	}
+}

core/types/tx_blob_test.go

@@ -65,6 +65,12 @@ var (
 )
 
 func createEmptyBlobTx(key *ecdsa.PrivateKey, withSidecar bool) *Transaction {
+	blobtx := createEmptyBlobTxInner(withSidecar)
+	signer := NewCancunSigner(blobtx.ChainID.ToBig())
+	return MustSignNewTx(key, signer, blobtx)
+}
+
+func createEmptyBlobTxInner(withSidecar bool) *BlobTx {
 	sidecar := &BlobTxSidecar{
 		Blobs:       []kzg4844.Blob{emptyBlob},
 		Commitments: []kzg4844.Commitment{emptyBlobCommit},
@@ -85,6 +91,5 @@ func createEmptyBlobTx(key *ecdsa.PrivateKey, withSidecar bool) *Transaction {
 	if withSidecar {
 		blobtx.Sidecar = sidecar
 	}
-	signer := NewCancunSigner(blobtx.ChainID.ToBig())
-	return MustSignNewTx(key, signer, blobtx)
+	return blobtx
 }

docs/postmortems/2021-08-22-split-postmortem.md

@@ -87,7 +87,7 @@ The blocks on the 'bad' chain were investigated, and Tim Beiko reached out to th
 
 ### Disclosure decision
 
-The geth-team have an official policy regarding [vulnerability disclosure](https://geth.ethereum.org/docs/vulnerabilities/vulnerabilities). 
+The geth-team have an official policy regarding [vulnerability disclosure](https://geth.ethereum.org/docs/developers/geth-developer/disclosures). 
 
 > The primary goal for the Geth team is the health of the Ethereum network as a whole, and the decision whether or not to publish details about a serious vulnerability boils down to minimizing the risk and/or impact of discovery and exploitation.
 

eth/catalyst/api.go

@@ -173,8 +173,8 @@ func newConsensusAPIWithoutHeartbeat(eth *eth.Ethereum) *ConsensusAPI {
 // and return its payloadID.
 func (api *ConsensusAPI) ForkchoiceUpdatedV1(update engine.ForkchoiceStateV1, payloadAttributes *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
 	if payloadAttributes != nil {
-		if payloadAttributes.Withdrawals != nil {
-			return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("withdrawals not supported in V1"))
+		if payloadAttributes.Withdrawals != nil || payloadAttributes.BeaconRoot != nil {
+			return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("withdrawals and beacon root not supported in V1"))
 		}
 		if api.eth.BlockChain().Config().IsShanghai(api.eth.BlockChain().Config().LondonBlock, payloadAttributes.Timestamp) {
 			return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("forkChoiceUpdateV1 called post-shanghai"))
@@ -183,23 +183,31 @@ func (api *ConsensusAPI) ForkchoiceUpdatedV1(update engine.ForkchoiceStateV1, pa
 	return api.forkchoiceUpdated(update, payloadAttributes, engine.PayloadV1, false)
 }
 
-// ForkchoiceUpdatedV2 is equivalent to V1 with the addition of withdrawals in the payload attributes.
+// ForkchoiceUpdatedV2 is equivalent to V1 with the addition of withdrawals in the payload
+// attributes. It supports both PayloadAttributesV1 and PayloadAttributesV2.
 func (api *ConsensusAPI) ForkchoiceUpdatedV2(update engine.ForkchoiceStateV1, params *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
 	if params != nil {
-		if params.Withdrawals == nil {
-			return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("missing withdrawals"))
+		switch api.eth.BlockChain().Config().LatestFork(params.Timestamp) {
+		case forks.Paris:
+			if params.Withdrawals != nil {
+				return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("withdrawals before shanghai"))
+			}
+		case forks.Shanghai:
+			if params.Withdrawals == nil {
+				return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("missing withdrawals"))
+			}
+		default:
+			return engine.STATUS_INVALID, engine.UnsupportedFork.With(errors.New("forkchoiceUpdatedV2 must only be called with paris and shanghai payloads"))
 		}
 		if params.BeaconRoot != nil {
 			return engine.STATUS_INVALID, engine.InvalidParams.With(errors.New("unexpected beacon root"))
 		}
-		if api.eth.BlockChain().Config().LatestFork(params.Timestamp) != forks.Shanghai {
-			return engine.STATUS_INVALID, engine.UnsupportedFork.With(errors.New("forkchoiceUpdatedV2 must only be called for shanghai payloads"))
-		}
 	}
 	return api.forkchoiceUpdated(update, params, engine.PayloadV2, false)
 }
 
-// ForkchoiceUpdatedV3 is equivalent to V2 with the addition of parent beacon block root in the payload attributes.
+// ForkchoiceUpdatedV3 is equivalent to V2 with the addition of parent beacon block root
+// in the payload attributes. It supports only PayloadAttributesV3.
 func (api *ConsensusAPI) ForkchoiceUpdatedV3(update engine.ForkchoiceStateV1, params *engine.PayloadAttributes) (engine.ForkChoiceResponse, error) {
 	if params != nil {
 		// TODO(matt): according to https://github.com/ethereum/execution-apis/pull/498,

internal/flags/helpers.go

@@ -115,7 +115,7 @@ func doMigrateFlags(ctx *cli.Context) {
 		for _, parent := range ctx.Lineage()[1:] {
 			if parent.IsSet(name) {
 				// When iterating across the lineage, we will be served both
-				// the 'canon' and alias formats of all commmands. In most cases,
+				// the 'canon' and alias formats of all commands. In most cases,
 				// it's fine to set it in the ctx multiple times (one for each
 				// name), however, the Slice-flags are not fine.
 				// The slice-flags accumulate, so if we set it once as