From 2a7c4b62a9cce1b3d9cd3ad68d0c8b2acd25630c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Wed, 7 Apr 2021 18:14:24 +0300
Subject: [PATCH] eth: fix tracing state retrieval if requesting the non-dirty
genesis
---
eth/state_accessor.go | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/eth/state_accessor.go b/eth/state_accessor.go
index d7564a084..84cfaf4d7 100644
--- a/eth/state_accessor.go
+++ b/eth/state_accessor.go
@@ -61,6 +61,16 @@ func (eth *Ethereum) stateAtBlock(block *types.Block, reexec uint64, base *state
// the internal junks created by tracing will be persisted into the disk.
database = state.NewDatabaseWithConfig(eth.chainDb, &trie.Config{Cache: 16})
+ // If we didn't check the dirty database, do check the clean one, otherwise
+ // we would rewind past a persisted block (specific corner case is chain
+ // tracing from the genesis).
+ if !checkLive {
+ statedb, err = state.New(current.Root(), database, nil)
+ if err == nil {
+ return statedb, nil
+ }
+ }
+ // Database does not have the state for the given block, try to regenerate
for i := uint64(0); i < reexec; i++ {
if current.NumberU64() == 0 {
return nil, errors.New("genesis state is missing")
--
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