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Fix assumeutxo crash due to invalid base_blockhash

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This commit is contained in:
MarcoFalke
2021-04-04 08:23:06 +02:00
parent fa5668bfb3
commit fae33f98e6
2 changed files with 25 additions and 21 deletions
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41
src/validation.cpp
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@@ -4815,6 +4815,26 @@ bool ChainstateManager::PopulateAndValidateSnapshot(
uint256 base_blockhash = metadata.m_base_blockhash;
CBlockIndex* snapshot_start_block = WITH_LOCK(::cs_main, return m_blockman.LookupBlockIndex(base_blockhash));
if (!snapshot_start_block) {
// Needed for GetUTXOStats and ExpectedAssumeutxo to determine the height and to avoid a crash when base_blockhash.IsNull()
LogPrintf("[snapshot] Did not find snapshot start blockheader %s\n",
base_blockhash.ToString());
return false;
}
int base_height = snapshot_start_block->nHeight;
auto maybe_au_data = ExpectedAssumeutxo(base_height, ::Params());
if (!maybe_au_data) {
LogPrintf("[snapshot] assumeutxo height in snapshot metadata not recognized " /* Continued */
"(%d) - refusing to load snapshot\n", base_height);
return false;
}
const AssumeutxoData& au_data = *maybe_au_data;
COutPoint outpoint;
Coin coin;
const uint64_t coins_count = metadata.m_coins_count;
@@ -4905,15 +4925,6 @@ bool ChainstateManager::PopulateAndValidateSnapshot(
assert(coins_cache.GetBestBlock() == base_blockhash);
CBlockIndex* snapshot_start_block = WITH_LOCK(::cs_main, return m_blockman.LookupBlockIndex(base_blockhash));
if (!snapshot_start_block) {
// Needed for GetUTXOStats to determine the height
LogPrintf("[snapshot] Did not find snapshot start blockheader %s\n",
base_blockhash.ToString());
return false;
}
CCoinsStats stats{CoinStatsHashType::HASH_SERIALIZED};
auto breakpoint_fnc = [] { /* TODO insert breakpoint here? */ };
@@ -4927,18 +4938,6 @@ bool ChainstateManager::PopulateAndValidateSnapshot(
}
// Assert that the deserialized chainstate contents match the expected assumeutxo value.
int base_height = snapshot_start_block->nHeight;
auto maybe_au_data = ExpectedAssumeutxo(base_height, ::Params());
if (!maybe_au_data) {
LogPrintf("[snapshot] assumeutxo height in snapshot metadata not recognized " /* Continued */
"(%d) - refusing to load snapshot\n", base_height);
return false;
}
const AssumeutxoData& au_data = *maybe_au_data;
if (AssumeutxoHash{stats.hashSerialized} != au_data.hash_serialized) {
LogPrintf("[snapshot] bad snapshot content hash: expected %s, got %s\n",
au_data.hash_serialized.ToString(), stats.hashSerialized.ToString());