prevent double sign lock (#531)

Co-authored-by: paladz <453256728@qq.com>

diff --git a/protocol/bbft.go b/protocol/bbft.go
index 06b4859..02accaf 100644 (file)
--- a/protocol/bbft.go
+++ b/protocol/bbft.go
@@ -206,7 +206,9 @@ func (c *Chain) ProcessBlockSignature(signature, xPub []byte, blockHash *bc.Hash
 
 // SignBlockHeader signing the block if current node is consensus node
 func (c *Chain) SignBlockHeader(blockHeader *types.BlockHeader) error {
+       c.cond.L.Lock()
        _, err := c.signBlockHeader(blockHeader)
+       c.cond.L.Unlock()
        return err
 }