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consensus/clique: prevent 0 len extradata from panicing (#23538)

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Closes #23522

Co-authored-by: Martin Holst Swende <martin@swende.se>
This commit is contained in:
Marius van der Wijden
2021-09-21 10:46:08 +02:00
committed by GitHub
parent d8211c7ec7
commit b61ef24cce
3 changed files with 24 additions and 3 deletions
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5
core/genesis.go
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@ -310,7 +310,7 @@ func (g *Genesis) ToBlock(db ethdb.Database) *types.Block {
func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) {
block := g.ToBlock(db)
if block.Number().Sign() != 0 {
return nil, fmt.Errorf("can't commit genesis block with number > 0")
return nil, errors.New("can't commit genesis block with number > 0")
}
config := g.Config
if config == nil {
@ -319,6 +319,9 @@ func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) {
if err := config.CheckConfigForkOrder(); err != nil {
return nil, err
}
if config.Clique != nil && len(block.Extra()) == 0 {
return nil, errors.New("can't start clique chain without signers")
}
rawdb.WriteTd(db, block.Hash(), block.NumberU64(), g.Difficulty)
rawdb.WriteBlock(db, block)
rawdb.WriteReceipts(db, block.Hash(), block.NumberU64(), nil)