Merge branch 'release/0.9.25'v0.9.25

1 files changed, 5 insertions, 2 deletions

diff --git a/core/block_processor.go b/core/block_processor.go
index 3f10e5efd..e808c03da 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -21,7 +21,7 @@ import (
 const (
 	// must be bumped when consensus algorithm is changed, this forces the upgradedb
 	// command to be run (forces the blocks to be imported again using the new algorithm)
-	BlockChainVersion = 2
+	BlockChainVersion = 3
 )
 
 var receiptsPre = []byte("receipts-")
@@ -159,6 +159,9 @@ func (sm *BlockProcessor) RetryProcess(block *types.Block) (logs state.Logs, err
 		return nil, ParentError(header.ParentHash)
 	}
 	parent := sm.bc.GetBlock(header.ParentHash)
+	if !sm.Pow.Verify(block) {
+		return nil, ValidationError("Block's nonce is invalid (= %x)", block.Nonce)
+	}
 
 	return sm.processWithParent(block, parent)
 }
@@ -299,7 +302,7 @@ func (sm *BlockProcessor) ValidateHeader(block, parent *types.Header, checkPow b
 	a := new(big.Int).Sub(block.GasLimit, parent.GasLimit)
 	a.Abs(a)
 	b := new(big.Int).Div(parent.GasLimit, params.GasLimitBoundDivisor)
-	if !(a.Cmp(b) < 0) || (block.GasLimit.Cmp(params.MinGasLimit) == -1) {
+	if !(a.Cmp(b) <= 0) || (block.GasLimit.Cmp(params.MinGasLimit) == -1) {
 		return fmt.Errorf("GasLimit check failed for block %v (%v > %v)", block.GasLimit, a, b)
 	}