diff options
| -rw-r--r-- | src/validation.cpp | 7 | ||||
| -rwxr-xr-x | test/functional/feature_abortnode.py | 48 | ||||
| -rwxr-xr-x | test/functional/test_runner.py | 1 |
3 files changed, 55 insertions, 1 deletions
diff --git a/src/validation.cpp b/src/validation.cpp index 3246d3151..19f4f098d 100644 --- a/src/validation.cpp +++ b/src/validation.cpp @@ -2185,7 +2185,7 @@ bool CChainState::DisconnectTip(CValidationState& state, const CChainParams& cha std::shared_ptr<CBlock> pblock = std::make_shared<CBlock>(); CBlock& block = *pblock; if (!ReadBlockFromDisk(block, pindexDelete, chainparams.GetConsensus())) - return AbortNode(state, "Failed to read block"); + return error("DisconnectTip(): Failed to read block"); // Apply the block atomically to the chain state. int64_t nStart = GetTimeMicros(); { @@ -2442,6 +2442,11 @@ bool CChainState::ActivateBestChainStep(CValidationState& state, const CChainPar // This is likely a fatal error, but keep the mempool consistent, // just in case. Only remove from the mempool in this case. UpdateMempoolForReorg(disconnectpool, false); + + // If we're unable to disconnect a block during normal operation, + // then that is a failure of our local system -- we should abort + // rather than stay on a less work chain. + AbortNode(state, "Failed to disconnect block; see debug.log for details"); return false; } fBlocksDisconnected = true; diff --git a/test/functional/feature_abortnode.py b/test/functional/feature_abortnode.py new file mode 100755 index 000000000..62c3eca07 --- /dev/null +++ b/test/functional/feature_abortnode.py @@ -0,0 +1,48 @@ +#!/usr/bin/env python3 +# Copyright (c) 2019 The Bitcoin Core developers +# Distributed under the MIT software license, see the accompanying +# file COPYING or http://www.opensource.org/licenses/mit-license.php. +"""Test bitcoind aborts if can't disconnect a block. + +- Start a single node and generate 3 blocks. +- Delete the undo data. +- Mine a fork that requires disconnecting the tip. +- Verify that bitcoind AbortNode's. +""" + +from test_framework.test_framework import BitcoinTestFramework +from test_framework.util import wait_until, get_datadir_path, connect_nodes +import os + +class AbortNodeTest(BitcoinTestFramework): + + def set_test_params(self): + self.setup_clean_chain = True + self.num_nodes = 2 + + def setup_network(self): + self.setup_nodes() + # We'll connect the nodes later + + def run_test(self): + self.nodes[0].generate(3) + datadir = get_datadir_path(self.options.tmpdir, 0) + + # Deleting the undo file will result in reorg failure + os.unlink(os.path.join(datadir, 'regtest', 'blocks', 'rev00000.dat')) + + # Connecting to a node with a more work chain will trigger a reorg + # attempt. + self.nodes[1].generate(3) + with self.nodes[0].assert_debug_log(["Failed to disconnect block"]): + connect_nodes(self.nodes[0], 1) + self.nodes[1].generate(1) + + # Check that node0 aborted + self.log.info("Waiting for crash") + wait_until(lambda: self.nodes[0].is_node_stopped(), timeout=60) + self.log.info("Node crashed - now verifying restart fails") + self.nodes[0].assert_start_raises_init_error() + +if __name__ == '__main__': + AbortNodeTest().main() diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py index 6fc48f264..0db838273 100755 --- a/test/functional/test_runner.py +++ b/test/functional/test_runner.py @@ -107,6 +107,7 @@ BASE_SCRIPTS = [ 'feature_bip68_sequence.py', 'p2p_feefilter.py', 'feature_reindex.py', + 'feature_abortnode.py', # vv Tests less than 30s vv 'wallet_keypool_topup.py', 'interface_zmq.py', |