refactor: remove debug log (#743)

Co-authored-by: Your Name <you@example.com>

bridge/internal/controller/relayer/l2_relayer.go

@@ -415,8 +415,8 @@ func (r *Layer2Relayer) ProcessCommittedBatches() {
 	hash := batch.Hash
 	status := types.ProvingStatus(batch.ProvingStatus)
 	switch status {
-	case types.ProvingTaskUnassigned, types.ProvingTaskAssigned, types.ProvingTaskFailed:
-		// We do not handle pending or failed proving tasks in this function.
+	case types.ProvingTaskUnassigned, types.ProvingTaskAssigned:
+		// The proof for this block is not ready yet.
 		return
 	case types.ProvingTaskProved:
 		// It's an intermediate state. The prover manager received the proof but has not verified
@@ -496,6 +496,25 @@ func (r *Layer2Relayer) ProcessCommittedBatches() {
 		success = true
 		r.processingFinalization.Store(txID, hash)
 
+	case types.ProvingTaskFailed:
+		// We were unable to prove this batch. There are two possibilities:
+		// (a) Prover bug. In this case, we should fix and redeploy the prover.
+		//     In the meantime, we continue to commit batches to L1 as well as
+		//     proposing and proving chunks and batches.
+		// (b) Unprovable batch, e.g. proof overflow. In this case we need to
+		//     stop the ledger, fix the limit, revert all the violating blocks,
+		//     chunks and batches and all subsequent ones, and resume, i.e. this
+		//     case requires manual resolution.
+		log.Error(
+			"batch proving failed",
+			"Index", batch.Index,
+			"Hash", batch.Hash,
+			"ProverAssignedAt", batch.ProverAssignedAt,
+			"ProvedAt", batch.ProvedAt,
+			"ProofTimeSec", batch.ProofTimeSec,
+		)
+		return
+
 	default:
 		log.Error("encounter unreachable case in ProcessCommittedBatches", "proving status", status)
 	}

common/libzkp/impl/Cargo.lock

@@ -630,9 +630,12 @@ checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
 
 [[package]]
 name = "convert_case"
-version = "0.5.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb4a24b1aaf0fd0ce8b45161144d6f42cd91677fd5940fd431183eb023b3a2b8"
+checksum = "ec182b0ca2f35d8fc196cf3404988fd8b8c739a4d270ff118a398feb0cbec1ca"
+dependencies = [
+ "unicode-segmentation",
+]
 
 [[package]]
 name = "core-foundation-sys"
@@ -1138,13 +1141,12 @@ dependencies = [
 [[package]]
 name = "ethers-core"
 version = "0.17.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ebdd63c828f58aa067f40f9adcbea5e114fb1f90144b3a1e2858e0c9b1ff4e8"
+source = "git+https://github.com/scroll-tech/ethers-rs.git?branch=v0.17.0#739ec9a0df8daf536937739c87e85612bd73212f"
 dependencies = [
  "arrayvec",
  "bytes",
  "chrono",
- "convert_case 0.5.0",
+ "convert_case 0.6.0",
  "elliptic-curve",
  "ethabi",
  "fastrlp",
@@ -4082,6 +4084,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1dd624098567895118886609431a7c3b8f516e41d30e0643f03d94592a147e36"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.4"

common/libzkp/impl/Cargo.toml

@@ -7,6 +7,8 @@ edition = "2021"
 [lib]
 crate-type = ["cdylib"]
 
+[patch.crates-io]
+ethers-core = { git = "https://github.com/scroll-tech/ethers-rs.git", branch = "v0.17.0" }
 [patch."https://github.com/privacy-scaling-explorations/halo2.git"]
 halo2_proofs = { git = "https://github.com/scroll-tech/halo2.git", branch = "develop" }
 [patch."https://github.com/privacy-scaling-explorations/poseidon.git"]

common/types/batch_header_test.go

@@ -169,7 +169,7 @@ func TestBatchHeaderEncode(t *testing.T) {
 	assert.NotNil(t, batchHeader)
 	bytes = batchHeader.Encode()
 	assert.Equal(t, 121, len(bytes))
-	assert.Equal(t, "010000000000000001000000000000000b000000000000000b457a9e90e8e51ba2de2f66c6b589540b88cf594dac7fa7d04b99cdcfecf24e384136709aabc8a23aa17fbcc833da2f7857d3c2884feec9aae73429c135f9498500000000000000000000000000000000000000000000000000000000000003ff", common.Bytes2Hex(bytes))
+	assert.Equal(t, "010000000000000001000000000000000b000000000000000b34f419ce7e882295bdb5aec6cce56ffa788a5fed4744d7fbd77e4acbf409f1ca4136709aabc8a23aa17fbcc833da2f7857d3c2884feec9aae73429c135f9498500000000000000000000000000000000000000000000000000000000000003ff", common.Bytes2Hex(bytes))
 }
 
 func TestBatchHeaderHash(t *testing.T) {
@@ -230,7 +230,7 @@ func TestBatchHeaderHash(t *testing.T) {
 	assert.NoError(t, err)
 	assert.NotNil(t, batchHeader)
 	hash = batchHeader.Hash()
-	assert.Equal(t, "0ec9547c6645d5f0c1254e121f49e93f54525cfda5bfb2236440fb3470f48902", common.Bytes2Hex(hash.Bytes()))
+	assert.Equal(t, "1c3007880f0eafe74572ede7d164ff1ee5376e9ac9bff6f7fb837b2630cddc9a", common.Bytes2Hex(hash.Bytes()))
 }
 
 func TestBatchHeaderDecode(t *testing.T) {

common/types/block.go

@@ -36,6 +36,17 @@ func (w *WrappedBlock) NumL1Messages(totalL1MessagePoppedBefore uint64) uint64 {
 	return *lastQueueIndex - totalL1MessagePoppedBefore + 1
 }
 
+// NumL2Transactions returns the number of L2 transactions in this block.
+func (w *WrappedBlock) NumL2Transactions() uint64 {
+	var count uint64
+	for _, txData := range w.Transactions {
+		if txData.Type != types.L1MessageTxType {
+			count++
+		}
+	}
+	return count
+}
+
 // Encode encodes the WrappedBlock into RollupV2 BlockContext Encoding.
 func (w *WrappedBlock) Encode(totalL1MessagePoppedBefore uint64) ([]byte, error) {
 	bytes := make([]byte, 60)
@@ -43,20 +54,25 @@ func (w *WrappedBlock) Encode(totalL1MessagePoppedBefore uint64) ([]byte, error)
 	if !w.Header.Number.IsUint64() {
 		return nil, errors.New("block number is not uint64")
 	}
-	if len(w.Transactions) > math.MaxUint16 {
-		return nil, errors.New("number of transactions exceeds max uint16")
-	}
 
+	// note: numL1Messages includes skipped messages
 	numL1Messages := w.NumL1Messages(totalL1MessagePoppedBefore)
 	if numL1Messages > math.MaxUint16 {
 		return nil, errors.New("number of L1 messages exceeds max uint16")
 	}
 
+	// note: numTransactions includes skipped messages
+	numL2Transactions := w.NumL2Transactions()
+	numTransactions := numL1Messages + numL2Transactions
+	if numTransactions > math.MaxUint16 {
+		return nil, errors.New("number of transactions exceeds max uint16")
+	}
+
 	binary.BigEndian.PutUint64(bytes[0:], w.Header.Number.Uint64())
 	binary.BigEndian.PutUint64(bytes[8:], w.Header.Time)
 	// TODO: [16:47] Currently, baseFee is 0, because we disable EIP-1559.
 	binary.BigEndian.PutUint64(bytes[48:], w.Header.GasLimit)
-	binary.BigEndian.PutUint16(bytes[56:], uint16(len(w.Transactions)))
+	binary.BigEndian.PutUint16(bytes[56:], uint16(numTransactions))
 	binary.BigEndian.PutUint16(bytes[58:], uint16(numL1Messages))
 
 	return bytes, nil

common/types/chunk_test.go

@@ -65,9 +65,10 @@ func TestChunkEncode(t *testing.T) {
 	hexString = hex.EncodeToString(bytes)
 	assert.NoError(t, err)
 	assert.Equal(t, 97, len(bytes))
-	assert.Equal(t, "01000000000000000d00000000646b6e13000000000000000000000000000000000000000000000000000000000000000000000000007a12000002000b00000020df0b80825dc0941a258d17bf244c4df02d40343a7626a9d321e1058080808080", hexString)
+	assert.Equal(t, "01000000000000000d00000000646b6e13000000000000000000000000000000000000000000000000000000000000000000000000007a1200000c000b00000020df0b80825dc0941a258d17bf244c4df02d40343a7626a9d321e1058080808080", hexString)
 
 	// Test case 5: when the chunk contains two blocks each with 1 L1MsgTx
+	// TODO: revise this test, we cannot reuse the same L1MsgTx twice
 	chunk = &Chunk{
 		Blocks: []*WrappedBlock{
 			wrappedBlock2,
@@ -78,7 +79,7 @@ func TestChunkEncode(t *testing.T) {
 	hexString = hex.EncodeToString(bytes)
 	assert.NoError(t, err)
 	assert.Equal(t, 193, len(bytes))
-	assert.Equal(t, "02000000000000000d00000000646b6e13000000000000000000000000000000000000000000000000000000000000000000000000007a12000002000b000000000000000d00000000646b6e13000000000000000000000000000000000000000000000000000000000000000000000000007a12000002000000000020df0b80825dc0941a258d17bf244c4df02d40343a7626a9d321e105808080808000000020df0b80825dc0941a258d17bf244c4df02d40343a7626a9d321e1058080808080", hexString)
+	assert.Equal(t, "02000000000000000d00000000646b6e13000000000000000000000000000000000000000000000000000000000000000000000000007a1200000c000b000000000000000d00000000646b6e13000000000000000000000000000000000000000000000000000000000000000000000000007a12000001000000000020df0b80825dc0941a258d17bf244c4df02d40343a7626a9d321e105808080808000000020df0b80825dc0941a258d17bf244c4df02d40343a7626a9d321e1058080808080", hexString)
 }
 
 func TestChunkHash(t *testing.T) {
@@ -133,5 +134,5 @@ func TestChunkHash(t *testing.T) {
 	}
 	hash, err = chunk.Hash(0)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x42967825696a129e7a83f082097aca982747480956dcaa448c9296e795c9a91a", hash.Hex())
+	assert.Equal(t, "0x2eb7dd63bf8fc29a0f8c10d16c2ae6f9da446907c79d50f5c164d30dc8526b60", hash.Hex())
 }

common/version/version.go

@@ -5,7 +5,7 @@ import (
 	"runtime/debug"
 )
 
-var tag = "v4.1.13"
+var tag = "v4.1.17"
 
 var commit = func() string {
 	if info, ok := debug.ReadBuildInfo(); ok {

contracts/src/L1/rollup/ScrollChain.sol

@@ -492,6 +492,7 @@ contract ScrollChain is OwnableUpgradeable, PausableUpgradeable, IScrollChain {
 
             // concatenate l2 transaction hashes
             uint256 _numTransactionsInBlock = ChunkCodec.numTransactions(blockPtr);
+            require(_numTransactionsInBlock >= _numL1MessagesInBlock, "num txs less than num L1 msgs");
             for (uint256 j = _numL1MessagesInBlock; j < _numTransactionsInBlock; j++) {
                 bytes32 txHash;
                 (txHash, l2TxPtr) = ChunkCodec.loadL2TxHash(l2TxPtr);