Truncate ExtraData to 32 bytes for to satisfy SSZ marshal (#14803)

prysmaticlabs · Jan 16, 2025 · dc002c2 · dc002c2
1 parent e7e48dc
commit dc002c2
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git a/changelog/tt_fix_generate_genesis.md b/changelog/tt_fix_generate_genesis.md
@@ -0,0 +1,3 @@
+### Fixed
+
+- Prysmctl generate genesis state: fix truncation of ExtraData to 32 bytes to satisfy SSZ marshaling
diff --git a/runtime/interop/premine-state.go b/runtime/interop/premine-state.go
@@ -621,6 +621,10 @@ func (s *PremineGenesisConfig) setLatestBlockHeader(g state.BeaconState) error {
 
 func (s *PremineGenesisConfig) setExecutionPayload(g state.BeaconState) error {
 	gb := s.GB
+	extraData := gb.Extra()
+	if len(extraData) > 32 {
+		extraData = extraData[:32]
+	}
 
 	if s.Version >= version.Deneb {
 		payload := &enginev1.ExecutionPayloadDeneb{
@@ -634,7 +638,7 @@ func (s *PremineGenesisConfig) setExecutionPayload(g state.BeaconState) error {
 			GasLimit:      gb.GasLimit(),
 			GasUsed:       gb.GasUsed(),
 			Timestamp:     gb.Time(),
-			ExtraData:     gb.Extra(),
+			ExtraData:     extraData,
 			BaseFeePerGas: bytesutil.PadTo(bytesutil.ReverseByteOrder(gb.BaseFee().Bytes()), fieldparams.RootLength),
 			BlockHash:     gb.Hash().Bytes(),
 			Transactions:  make([][]byte, 0),
@@ -673,7 +677,7 @@ func (s *PremineGenesisConfig) setExecutionPayload(g state.BeaconState) error {
 			GasLimit:      gb.GasLimit(),
 			GasUsed:       gb.GasUsed(),
 			Timestamp:     gb.Time(),
-			ExtraData:     gb.Extra(),
+			ExtraData:     extraData,
 			BaseFeePerGas: bytesutil.PadTo(bytesutil.ReverseByteOrder(gb.BaseFee().Bytes()), fieldparams.RootLength),
 			BlockHash:     gb.Hash().Bytes(),
 			Transactions:  make([][]byte, 0),
@@ -709,7 +713,7 @@ func (s *PremineGenesisConfig) setExecutionPayload(g state.BeaconState) error {
 			GasLimit:      gb.GasLimit(),
 			GasUsed:       gb.GasUsed(),
 			Timestamp:     gb.Time(),
-			ExtraData:     gb.Extra(),
+			ExtraData:     extraData,
 			BaseFeePerGas: bytesutil.PadTo(bytesutil.ReverseByteOrder(gb.BaseFee().Bytes()), fieldparams.RootLength),
 			BlockHash:     gb.Hash().Bytes(),
 			Transactions:  make([][]byte, 0),
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,3 @@
		### Fixed

		- Prysmctl generate genesis state: fix truncation of ExtraData to 32 bytes to satisfy SSZ marshaling