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fix incorrect blockHash in evm (#780)

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* Fix wrong blockHash value in evm

* fix ut

* store current block hash in BeginBlock

* update ut

* update comment

* add changelog
This commit is contained in:
Ray Pierre 2021-03-19 11:04:29 +08:00 committed by GitHub
parent 2df3abd6a2
commit 75fb3ccb89
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GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 34 additions and 80 deletions
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1
CHANGELOG.md
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@ -62,6 +62,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
* (api) [\#687](https://github.com/cosmos/ethermint/issues/687) Returns error for a transaction with an incorrect nonce.
* (evm) [\#674](https://github.com/cosmos/ethermint/issues/674) Reset all cache after account data has been committed in `EndBlock` to make sure every node state consistent.
* (evm) [\#672](https://github.com/cosmos/ethermint/issues/672) Fix panic of `wrong Block.Header.AppHash` when restart a node with snapshot.
* (evm) [\#775](https://github.com/cosmos/ethermint/issues/775) MisUse of headHash as blockHash when create EVM context.
### Features
* (api) [\#821](https://github.com/cosmos/ethermint/pull/821) Individually enable the api modules. Will be implemented in the latest version of ethermint with the upcoming stargate upgrade.

3
importer/importer_test.go
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@ -254,7 +254,8 @@ func TestImportBlocks(t *testing.T) {
}
for i, tx := range block.Transactions() {
evmKeeper.Prepare(ctx, tx.Hash(), block.Hash(), i)
evmKeeper.Prepare(ctx, tx.Hash(), i)
evmKeeper.CommitStateDB.SetBlockHash(block.Hash())
receipt, gas, err := applyTransaction(
chainConfig, chainContext, nil, gp, evmKeeper, header, tx, usedGas, vmConfig,

3
x/evm/handler.go
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@ -106,8 +106,7 @@ func handleMsgEthermint(ctx sdk.Context, k *Keeper, msg types.MsgEthermint) (*sd
if !st.Simulate {
// Prepare db for logs
blockHash := types.HashFromContext(ctx)
k.CommitStateDB.Prepare(ethHash, blockHash, k.TxCount)
k.CommitStateDB.Prepare(ethHash, k.TxCount)
k.TxCount++
}

9
x/evm/keeper/abci.go
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@ -22,11 +22,12 @@ func (k *Keeper) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
ctx = ctx.WithGasMeter(sdk.NewInfiniteGasMeter())
// Set the hash -> height and height -> hash mapping.
hash := req.Header.LastBlockId.GetHash()
height := req.Header.GetHeight() - 1
currentHash := req.Hash
height := req.Header.GetHeight()
k.SetHeightHash(ctx, uint64(height), common.BytesToHash(hash))
k.SetBlockHash(ctx, hash, height)
k.SetHeightHash(ctx, uint64(height), common.BytesToHash(currentHash))
k.SetBlockHash(ctx, currentHash, height)
k.CommitStateDB.SetBlockHash(common.BytesToHash(currentHash))
// reset counters that are used on CommitStateDB.Prepare
k.Bloom = big.NewInt(0)

7
x/evm/keeper/abci_test.go
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@ -8,10 +8,11 @@ func (suite *KeeperTestSuite) TestBeginBlock() {
req := abci.RequestBeginBlock{
Header: abci.Header{
LastBlockId: abci.BlockID{
Hash: []byte("hash"),
Hash: []byte("last hash"),
},
Height: 10,
},
Hash: []byte("hash"),
}
// get the initial consumption
@ -33,9 +34,9 @@ func (suite *KeeperTestSuite) TestBeginBlock() {
suite.Require().Equal(int64(initialConsumed), int64(suite.ctx.GasMeter().GasConsumed()))
lastHeight, found := suite.app.EvmKeeper.GetBlockHash(suite.ctx, req.Header.LastBlockId.Hash)
lastHeight, found := suite.app.EvmKeeper.GetBlockHash(suite.ctx, req.Hash)
suite.Require().True(found)
suite.Require().Equal(int64(9), lastHeight)
suite.Require().Equal(int64(10), lastHeight)
}
func (suite *KeeperTestSuite) TestEndBlock() {

3
x/evm/keeper/msg_server.go
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@ -52,8 +52,7 @@ func (k Keeper) EthereumTx(ctx sdk.Context, msg types.MsgEthereumTx) (*sdk.Resul
// other nodes, causing a consensus error
if !st.Simulate {
// Prepare db for logs
blockHash := types.HashFromContext(ctx)
k.CommitStateDB.Prepare(ethHash, blockHash, k.TxCount)
k.CommitStateDB.Prepare(ethHash, k.TxCount)
k.TxCount++
}

4
x/evm/keeper/statedb.go
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@ -225,8 +225,8 @@ func (k *Keeper) Reset(ctx sdk.Context, root ethcmn.Hash) error {
}
// Prepare calls CommitStateDB.Prepare using the passed in context
func (k *Keeper) Prepare(ctx sdk.Context, thash, bhash ethcmn.Hash, txi int) {
k.CommitStateDB.WithContext(ctx).Prepare(thash, bhash, txi)
func (k *Keeper) Prepare(ctx sdk.Context, thash ethcmn.Hash, txi int) {
k.CommitStateDB.WithContext(ctx).Prepare(thash, txi)
}
// CreateAccount calls CommitStateDB.CreateAccount using the passed in context

5
x/evm/keeper/statedb_test.go
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@ -18,7 +18,7 @@ import (
func (suite *KeeperTestSuite) TestBloomFilter() {
// Prepare db for logs
tHash := ethcmn.BytesToHash([]byte{0x1})
suite.app.EvmKeeper.Prepare(suite.ctx, tHash, ethcmn.Hash{}, 0)
suite.app.EvmKeeper.Prepare(suite.ctx, tHash, 0)
contractAddress := ethcmn.BigToAddress(big.NewInt(1))
log := ethtypes.Log{Address: contractAddress}
@ -359,7 +359,8 @@ func (suite *KeeperTestSuite) TestSuiteDB_Prepare() {
bhash := ethcmn.BytesToHash([]byte("bhash"))
txi := 1
suite.app.EvmKeeper.Prepare(suite.ctx, thash, bhash, txi)
suite.app.EvmKeeper.Prepare(suite.ctx, thash, txi)
suite.app.EvmKeeper.CommitStateDB.SetBlockHash(bhash)
suite.Require().Equal(txi, suite.app.EvmKeeper.TxIndex(suite.ctx))
suite.Require().Equal(bhash, suite.app.EvmKeeper.BlockHash(suite.ctx))

26
x/evm/types/state_transition.go
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@ -48,16 +48,16 @@ type ExecutionResult struct {
}
// GetHashFn implements vm.GetHashFunc for Ethermint. It handles 3 cases:
// 1. The requested height matches the current height from context (and thus same epoch number)
// 1. The requested height matches the current height (and thus same epoch number)
// 2. The requested height is from an previous height from the same chain epoch
// 3. The requested height is from a height greater than the latest one
func GetHashFn(ctx sdk.Context, csdb *CommitStateDB) vm.GetHashFunc {
return func(height uint64) common.Hash {
switch {
case ctx.BlockHeight() == int64(height):
// Case 1: The requested height matches the one from the context so we can retrieve the header
// hash directly from the context.
return HashFromContext(ctx)
// Case 1: The requested height matches the one from the CommitStateDB so we can retrieve the block
// hash directly from the CommitStateDB.
return csdb.bhash
case ctx.BlockHeight() > int64(height):
// Case 2: if the chain is not the current height we need to retrieve the hash from the store for the
@ -268,21 +268,3 @@ func (st StateTransition) TransitionDb(ctx sdk.Context, config ChainConfig) (*Ex
return executionResult, nil
}
// HashFromContext returns the Ethereum Header hash from the context's Tendermint
// block header.
func HashFromContext(ctx sdk.Context) common.Hash {
// cast the ABCI header to tendermint Header type
tmHeader := AbciHeaderToTendermint(ctx.BlockHeader())
// get the Tendermint block hash from the current header
tmBlockHash := tmHeader.Hash()
// NOTE: if the validator set hash is missing the hash will be returned as nil,
// so we need to check for this case to prevent a panic when calling Bytes()
if tmBlockHash == nil {
return common.Hash{}
}
return common.BytesToHash(tmBlockHash.Bytes())
}

4
x/evm/types/state_transition_test.go
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@ -34,6 +34,8 @@ func (suite *StateDBTestSuite) TestGetHashFn() {
ValidatorsHash: []byte("val_hash"),
},
)
hash := ethcmn.BytesToHash([]byte("test hash"))
suite.stateDB.SetBlockHash(hash)
},
false,
},
@ -54,7 +56,7 @@ func (suite *StateDBTestSuite) TestGetHashFn() {
ValidatorsHash: []byte("val_hash"),
},
)
hash := types.HashFromContext(suite.ctx)
hash := ethcmn.BytesToHash([]byte("test hash"))
suite.stateDB.WithContext(suite.ctx).SetHeightHash(1, hash)
},
false,

7
x/evm/types/statedb.go
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@ -342,6 +342,10 @@ func (csdb *CommitStateDB) BlockHash() ethcmn.Hash {
return csdb.bhash
}
func (csdb *CommitStateDB) SetBlockHash(hash ethcmn.Hash) {
csdb.bhash = hash
}
// GetCode returns the code for a given account.
func (csdb *CommitStateDB) GetCode(addr ethcmn.Address) []byte {
so := csdb.getStateObject(addr)
@ -733,9 +737,8 @@ func (csdb *CommitStateDB) clearJournalAndRefund() {
// Prepare sets the current transaction hash and index and block hash which is
// used when the EVM emits new state logs.
func (csdb *CommitStateDB) Prepare(thash, bhash ethcmn.Hash, txi int) {
func (csdb *CommitStateDB) Prepare(thash ethcmn.Hash, txi int) {
csdb.thash = thash
csdb.bhash = bhash
csdb.txIndex = txi
}

5
x/evm/types/statedb_test.go
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@ -81,7 +81,7 @@ func (suite *StateDBTestSuite) TestGetHeightHash() {
func (suite *StateDBTestSuite) TestBloomFilter() {
// Prepare db for logs
tHash := ethcmn.BytesToHash([]byte{0x1})
suite.stateDB.Prepare(tHash, ethcmn.Hash{}, 0)
suite.stateDB.Prepare(tHash, 0)
contractAddress := ethcmn.BigToAddress(big.NewInt(1))
log := ethtypes.Log{Address: contractAddress}
@ -419,7 +419,8 @@ func (suite *StateDBTestSuite) TestSuiteDB_Prepare() {
bhash := ethcmn.BytesToHash([]byte("bhash"))
txi := 1
suite.stateDB.Prepare(thash, bhash, txi)
suite.stateDB.Prepare(thash, txi)
suite.stateDB.SetBlockHash(bhash)
suite.Require().Equal(txi, suite.stateDB.TxIndex())
suite.Require().Equal(bhash, suite.stateDB.BlockHash())

37
x/evm/types/utils.go
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@ -8,10 +8,6 @@ import (
"github.com/pkg/errors"
"golang.org/x/crypto/sha3"
abci "github.com/tendermint/tendermint/abci/types"
tmtypes "github.com/tendermint/tendermint/types"
"github.com/tendermint/tendermint/version"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
@ -162,36 +158,3 @@ func recoverEthSig(R, S, Vb *big.Int, sigHash ethcmn.Hash) (ethcmn.Address, erro
return addr, nil
}
// AbciHeaderToTendermint is a util function to parse a tendermint ABCI Header to
// tendermint types Header.
func AbciHeaderToTendermint(header abci.Header) tmtypes.Header {
return tmtypes.Header{
Version: version.Consensus{
Block: version.Protocol(header.Version.Block),
App: version.Protocol(header.Version.App),
},
ChainID: header.ChainID,
Height: header.Height,
Time: header.Time,
LastBlockID: tmtypes.BlockID{
Hash: header.LastBlockId.Hash,
PartsHeader: tmtypes.PartSetHeader{
Total: int(header.LastBlockId.PartsHeader.Total),
Hash: header.LastBlockId.PartsHeader.Hash,
},
},
LastCommitHash: header.LastCommitHash,
DataHash: header.DataHash,
ValidatorsHash: header.ValidatorsHash,
NextValidatorsHash: header.NextValidatorsHash,
ConsensusHash: header.ConsensusHash,
AppHash: header.AppHash,
LastResultsHash: header.LastResultsHash,
EvidenceHash: header.EvidenceHash,
ProposerAddress: header.ProposerAddress,
}
}