Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

rebased on current master #11

Open
wants to merge 3 commits into
base: master
Choose a base branch
from
Open

Conversation

shoryak
Copy link

@shoryak shoryak commented Jul 28, 2021

Some comments and unnecessary spaces are left to be removed

JeremyRubin pushed a commit that referenced this pull request Jul 28, 2021
…ferenceable iterator outside its valid range)

fa09871 refactor: Avoid sign-compare compiler warning in util/asmap (MarcoFalke)

Pull request description:

  Can be reproduced on current master with `D_GLIBCXX_DEBUG`:

  ```
  /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/debug/safe_iterator.h:883:
  In function:
      __gnu_debug::_Safe_iterator<type-parameter-0-0, type-parameter-0-1,
      std::random_access_iterator_tag>::_Self __gnu_debug::operator+(const
      __gnu_debug::_Safe_iterator<type-parameter-0-0, type-parameter-0-1,
      std::random_access_iterator_tag>::_Self &,
      __gnu_debug::_Safe_iterator<type-parameter-0-0, type-parameter-0-1,
      std::random_access_iterator_tag>::difference_type)

  Error: attempt to advance a dereferenceable iterator 369 steps, which falls
  outside its valid range.

  Objects involved in the operation:
      iterator @ 0x0x7ffd3d613138 {
        type = std::__cxx1998::_Bit_const_iterator (constant iterator);
        state = dereferenceable;
        references sequence with type 'std::__debug::vector<bool, std::allocator<bool> >' @ 0x0x7ffd3d663590
      }
  ==65050== ERROR: libFuzzer: deadly signal
      #0 0x559ab9787690 in __sanitizer_print_stack_trace (/bitcoin/src/test/fuzz/fuzz+0x5a1690)
      #1 0x559ab9733998 in fuzzer::PrintStackTrace() (/bitcoin/src/test/fuzz/fuzz+0x54d998)
      #2 0x559ab9718ae3 in fuzzer::Fuzzer::CrashCallback() (/bitcoin/src/test/fuzz/fuzz+0x532ae3)
      #3 0x7f70a0e723bf  (/lib/x86_64-linux-gnu/libpthread.so.0+0x153bf)
      #4 0x7f70a0b3418a in raise (/lib/x86_64-linux-gnu/libc.so.6+0x4618a)
      #5 0x7f70a0b13858 in abort (/lib/x86_64-linux-gnu/libc.so.6+0x25858)
      #6 0x7f70a0f21148  (/lib/x86_64-linux-gnu/libstdc++.so.6+0xa1148)
      #7 0x559ab9f60a96 in __gnu_debug::operator+(__gnu_debug::_Safe_iterator<std::__cxx1998::_Bit_const_iterator, std::__debug::vector<bool, std::allocator<bool> >, std::random_access_iterator_tag> const&, long) /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/debug/safe_iterator.h:881:2
      #8 0x559ab9f61062 in SanityCheckASMap(std::__debug::vector<bool, std::allocator<bool> > const&, int) util/asmap.cpp:159:21
      #9 0x559ab9e4fdfa in SanityCheckASMap(std::__debug::vector<bool, std::allocator<bool> > const&) netaddress.cpp:1242:12
      #10 0x559ab9793fcb in addrman_fuzz_target(Span<unsigned char const>) test/fuzz/addrman.cpp:43:14
      #11 0x559ab978a03c in std::_Function_handler<void (Span<unsigned char const>), void (*)(Span<unsigned char const>)>::_M_invoke(std::_Any_data const&, Span<unsigned char const>&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:300:2
      #12 0x559aba2692c7 in std::function<void (Span<unsigned char const>)>::operator()(Span<unsigned char const>) const /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:688:14
      #13 0x559aba269132 in LLVMFuzzerTestOneInput test/fuzz/fuzz.cpp:63:5
      #14 0x559ab971a1a1 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/bitcoin/src/test/fuzz/fuzz+0x5341a1)
      bitcoin#15 0x559ab97198e5 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool*) (/bitcoin/src/test/fuzz/fuzz+0x5338e5)
      bitcoin#16 0x559ab971bb87 in fuzzer::Fuzzer::MutateAndTestOne() (/bitcoin/src/test/fuzz/fuzz+0x535b87)
      bitcoin#17 0x559ab971c885 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, fuzzer::fuzzer_allocator<fuzzer::SizedFile> >&) (/bitcoin/src/test/fuzz/fuzz+0x536885)
      bitcoin#18 0x559ab970b23e in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/bitcoin/src/test/fuzz/fuzz+0x52523e)
      bitcoin#19 0x559ab9734082 in main (/bitcoin/src/test/fuzz/fuzz+0x54e082)
      bitcoin#20 0x7f70a0b150b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
      bitcoin#21 0x559ab96dffdd in _start (/bitcoin/src/test/fuzz/fuzz+0x4f9fdd)

ACKs for top commit:
  sipa:
    utACK fa09871
  vasild:
    ACK fa09871

Tree-SHA512: 802fda33bda40fe2521f1e3be075ceddc5fd9ba185bd494286e50019931dfd688da7a6513601138b1dc7bb8e80ae47c8572902406eb59f68990619ddb2656748
JeremyRubin pushed a commit that referenced this pull request Jul 28, 2021
fa2e614 test: Fix off-by-one in mockscheduler test RPC (MarcoFalke)

Pull request description:

  Fixes:

  ```
  fuzz: scheduler.cpp:83: void CScheduler::MockForward(std::chrono::seconds): Assertion `delta_seconds.count() > 0 && delta_seconds < std::chrono::hours{1}' failed.
  ==1059066== ERROR: libFuzzer: deadly signal
      #0 0x558f75449c10 in __sanitizer_print_stack_trace (/root/fuzz_dir/scratch/fuzz_gen/code/src/test/fuzz/fuzz+0x5fec10)
      #1 0x558f753f32b8 in fuzzer::PrintStackTrace() fuzzer.o
      #2 0x558f753d68d3 in fuzzer::Fuzzer::CrashCallback() fuzzer.o
      #3 0x7f4a3cbbb3bf  (/lib/x86_64-linux-gnu/libpthread.so.0+0x153bf)
      #4 0x7f4a3c7ff18a in raise (/lib/x86_64-linux-gnu/libc.so.6+0x4618a)
      #5 0x7f4a3c7de858 in abort (/lib/x86_64-linux-gnu/libc.so.6+0x25858)
      #6 0x7f4a3c7de728  (/lib/x86_64-linux-gnu/libc.so.6+0x25728)
      #7 0x7f4a3c7eff35 in __assert_fail (/lib/x86_64-linux-gnu/libc.so.6+0x36f35)
      #8 0x558f7588a913 in CScheduler::MockForward(std::chrono::duration<long, std::ratio<1l, 1l> >) scheduler.cpp:83:5
      #9 0x558f75b0e5b1 in mockscheduler()::$_7::operator()(RPCHelpMan const&, JSONRPCRequest const&) const rpc/misc.cpp:435:30
      #10 0x558f75b0e5b1 in std::_Function_handler<UniValue (RPCHelpMan const&, JSONRPCRequest const&), mockscheduler()::$_7>::_M_invoke(std::_Any_data const&, RPCHelpMan const&, JSONRPCRequest const&) /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:285:9
      #11 0x558f7587a141 in std::function<UniValue (RPCHelpMan const&, JSONRPCRequest const&)>::operator()(RPCHelpMan const&, JSONRPCRequest const&) const /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:688:14
      #12 0x558f7587a141 in RPCHelpMan::HandleRequest(JSONRPCRequest const&) const rpc/util.cpp:565:26
      #13 0x558f756c0086 in CRPCCommand::CRPCCommand(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, RPCHelpMan (*)())::'lambda'(JSONRPCRequest const&, UniValue&, bool)::operator()(JSONRPCRequest const&, UniValue&, bool) const ./rpc/server.h:110:91
      #14 0x558f756c0086 in std::_Function_handler<bool (JSONRPCRequest const&, UniValue&, bool), CRPCCommand::CRPCCommand(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, RPCHelpMan (*)())::'lambda'(JSONRPCRequest const&, UniValue&, bool)>::_M_invoke(std::_Any_data const&, JSONRPCRequest const&, UniValue&, bool&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:285:9
      bitcoin#15 0x558f756b8592 in std::function<bool (JSONRPCRequest const&, UniValue&, bool)>::operator()(JSONRPCRequest const&, UniValue&, bool) const /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:688:14
      bitcoin#16 0x558f756b8592 in ExecuteCommand(CRPCCommand const&, JSONRPCRequest const&, UniValue&, bool) rpc/server.cpp:480:20
      bitcoin#17 0x558f756b8592 in ExecuteCommands(std::vector<CRPCCommand const*, std::allocator<CRPCCommand const*> > const&, JSONRPCRequest const&, UniValue&) rpc/server.cpp:444:13
      bitcoin#18 0x558f756b8017 in CRPCTable::execute(JSONRPCRequest const&) const rpc/server.cpp:464:13
      bitcoin#19 0x558f7552457a in (anonymous namespace)::RPCFuzzTestingSetup::CallRPC(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&) test/fuzz/rpc.cpp:50:25
      bitcoin#20 0x558f7552457a in rpc_fuzz_target(Span<unsigned char const>) test/fuzz/rpc.cpp:354:28
      bitcoin#21 0x558f7544cf0f in std::_Function_handler<void (Span<unsigned char const>), void (*)(Span<unsigned char const>)>::_M_invoke(std::_Any_data const&, Span<unsigned char const>&&) /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:300:2
      bitcoin#22 0x558f75c05197 in std::function<void (Span<unsigned char const>)>::operator()(Span<unsigned char const>) const /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:688:14
      bitcoin#23 0x558f75c05197 in LLVMFuzzerTestOneInput test/fuzz/fuzz.cpp:74:5
      bitcoin#24 0x558f753d8073 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) fuzzer.o
      bitcoin#25 0x558f753c1f72 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) fuzzer.o
      bitcoin#26 0x558f753c7d6a in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) fuzzer.o
      bitcoin#27 0x558f753f3a92 in main (/root/fuzz_dir/scratch/fuzz_gen/code/src/test/fuzz/fuzz+0x5a8a92)
      bitcoin#28 0x7f4a3c7e00b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
      bitcoin#29 0x558f7539cc9d in _start (/root/fuzz_dir/scratch/fuzz_gen/code/src/test/fuzz/fuzz+0x551c9d)

ACKs for top commit:
  practicalswift:
    cr ACK fa2e614

Tree-SHA512: cfa120265261f0ad019b46c426b915c1c007806b37aecb27016ce780a0ddea5e6fc9b09065fd40684b11183dcd3bf543558d7a655e604695021653540266baf7
@JeremyRubin JeremyRubin changed the base branch from refactor-blockmap-blockset to master July 30, 2021 16:02
@JeremyRubin
Copy link
Owner

@shoryak usually you want to have a clean git history as much as possible.

When you rebase, you don't want to ever commit things in a version that can't be compiled.

In this case I think the changes can be squashed down, can you go ahead and do that here?

@@ -76,13 +76,13 @@ class SignatureCacheHasher
}
};

struct BlockHasher
/* struct BlockHasher
Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

what's going on here?

Copy link
Author

@shoryak shoryak Jul 31, 2021

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

BlockHasher was not included in src/util/hasher.h , just the previous one was commented out , i have fixed it now by modifying the src/util/hasher.h as well as src/validation.h , now BlockHasher is contained only in src/util/hasher.h , it is no longer in src/validation.h.

src/validation.h Outdated Show resolved Hide resolved
@shoryak shoryak force-pushed the pr/19677 branch 2 times, most recently from 1244a48 to a96887d Compare July 31, 2021 07:13
@JeremyRubin
Copy link
Owner

squash/fixup the commits?

m_node.chainman->ActiveChainstate().CoinsTip().SetBestBlock(next->GetBlockHash());

Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

no need for new whitespaces

@@ -8,6 +8,7 @@
#include <crypto/siphash.h>
#include <primitives/transaction.h>
#include <uint256.h>
#include <chain.h>
Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

it might be better to forward declare CBlockIndex and then move the BlockHasher constructor to the .cpp file, making mock a unique_ptr instead... that way we don't need to pull chain in anywhere it's needed. But then there's overhead!

Another option would be to template BlockHasher with T and then fill in CBlockIndex where it's used locally.

Copy link
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Yes , Now i have defined BlockHasher as a Template and filled it with CBlockIndex in validation.h when required.

@@ -3365,7 +3369,7 @@ bool BlockManager::AcceptBlockHeader(const CBlockHeader& block, BlockValidationS
}
}
}
CBlockIndex* pindex = AddToBlockIndex(block);
/* CBlockIndex* */ pindex = AddToBlockIndex(block);
Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

what's going on here?

```
test/fuzz/banman.cpp:35:13: warning: unused function 'operator==' [-Wunused-function]
static bool operator==(const CBanEntry& lhs, const CBanEntry& rhs)
            ^
1 warning generated.
```
@JeremyRubin
Copy link
Owner

@shoryak can you tell me a bit more about how you are rebasing? the 2 commits you arrived at don't really make sense, even though the final result looks ok.

@@ -109,8 +109,9 @@ FUZZ_TARGET_INIT(banman, initialize_banman)
BanMan ban_man_read{banlist_file, /* client_interface */ nullptr, /* default_ban_time */ 0};
banmap_t banmap_read;
ban_man_read.GetBanned(banmap_read);
// Temporarily disabled to allow the remainder of the fuzz test to run while a fix is being worked on:
// assert(banmap == banmap_read);
// Assert temporarily disabled to allow the remainder of the fuzz test to run while a
Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

why did you reenable this assert?

@@ -75,13 +75,21 @@ class SignatureCacheHasher
return u;
}
};

template <typename T>
Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

nit: add a newline on top.

}

CBlockIndex* BlockManager::FindForkInGlobalIndex(const CChain& chain, const CBlockLocator& locator)
{
AssertLockHeld(cs_main);

Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

nit: no newline needs to be added here.

@@ -1749,9 +1750,10 @@ bool CChainState::ConnectBlock(const CBlock& block, BlockValidationState& state,
// relative to a piece of software is an objective fact these defaults can be easily reviewed.
// This setting doesn't force the selection of any particular chain but makes validating some faster by
// effectively caching the result of part of the verification.
BlockMap::const_iterator it = m_blockman.m_block_index.find(hashAssumeValid);
//
Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

nit: new line not needed

Comment on lines +3570 to +3571


Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

nit: no newlines needed

@@ -4075,6 +4080,7 @@ bool CChainState::NeedsRedownload() const
{
AssertLockHeld(cs_main);


Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

nit: newline

Comment on lines +4155 to +4156


Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

nit; newline



if (m_blockman.m_block_index.count(m_blockman.m_block_index.hash_function()(m_params.GenesisBlock().GetHash())))

Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

nit: newline

@@ -4674,7 +4683,7 @@ std::optional<uint256> ChainstateManager::SnapshotBlockhash() const
{
LOCK(::cs_main);
if (m_active_chainstate && m_active_chainstate->m_from_snapshot_blockhash) {
// If a snapshot chainstate exists, it will always be our active.

Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

why did you delete this comment?

Comment on lines +115 to +116
extern CBlockPolicyEstimator feeEstimator;
extern CTxMemPool mempool;
Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

why did we add these externs here?

JeremyRubin pushed a commit that referenced this pull request Feb 28, 2022
fa7e147 test: Fix intermittent Tsan issue (MarcoFalke)

Pull request description:

  Fix https://cirrus-ci.com/task/5176769937408000?logs=ci#L5161

  ```
  WARNING: ThreadSanitizer: data race (pid=22965)
    Write of size 8 at 0x7f74d5e21f50 by main thread:
      #0 std::__1::ios_base::precision(long) /usr/lib/llvm-13/bin/../include/c++/v1/ios:513:18 (test_bitcoin+0x1a8366)
      #1 boost::io::ios_base_all_saver::restore() /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/io/ios_state.hpp:341:17 (test_bitcoin+0x1a8366)
      #2 boost::unit_test::unit_test_log_t::operator<<(boost::unit_test::log::begin const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_log.ipp:336:55 (test_bitcoin+0x1a8366)
      #3 boost::test_tools::tt_detail::report_assertion(boost::test_tools::assertion_result const&, boost::unit_test::lazy_ostream const&, boost::unit_test::basic_cstring<char const>, unsigned long, boost::test_tools::tt_detail::tool_level, boost::test_tools::tt_detail::check_type, unsigned long, ...) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/test_tools.ipp:359:19 (test_bitcoin+0x1b3b9b)
      #4 txindex_tests::txindex_initial_sync::test_method() src/test/txindex_tests.cpp:31:5 (test_bitcoin+0x78aebc)
      #5 txindex_tests::txindex_initial_sync_invoker() src/test/txindex_tests.cpp:16:1 (test_bitcoin+0x78a384)
      #6 boost::detail::function::void_function_invoker0<void (*)(), void>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:117:11 (test_bitcoin+0x2bf30d)
      #7 boost::function0<void>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x224027)
      #8 boost::detail::forward::operator()() /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1368:32 (test_bitcoin+0x224027)
      #9 boost::detail::function::function_obj_invoker0<boost::detail::forward, int>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:137:18 (test_bitcoin+0x224027)
      #10 boost::function0<int>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x1ac66c)
      #11 int boost::detail::do_invoke<boost::shared_ptr<boost::detail::translator_holder_base>, boost::function<int ()> >(boost::shared_ptr<boost::detail::translator_holder_base> const&, boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:290:30 (test_bitcoin+0x1ac66c)
      #12 boost::execution_monitor::catch_signals(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:879:16 (test_bitcoin+0x1ac66c)
      #13 boost::execution_monitor::execute(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1277:16 (test_bitcoin+0x1ac980)
      #14 boost::execution_monitor::vexecute(boost::function<void ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1377:5 (test_bitcoin+0x1a7f9b)
      bitcoin#15 boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::function<void ()> const&, unsigned long) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_monitor.ipp:49:9 (test_bitcoin+0x1a7f9b)
      bitcoin#16 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:823:44 (test_bitcoin+0x1e0d5c)
      bitcoin#17 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      bitcoin#18 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      bitcoin#19 boost::unit_test::framework::run(unsigned long, bool) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:1696:29 (test_bitcoin+0x1a6bfb)
      bitcoin#20 boost::unit_test::unit_test_main(boost::unit_test::test_suite* (*)(int, char**), int, char**) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:248:9 (test_bitcoin+0x1c4ed6)
      bitcoin#21 main /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:304:12 (test_bitcoin+0x1c5506)
    Previous write of size 8 at 0x7f74d5e21f50 by thread T4:
      [failed to restore the stack]
    Location is global 'std::__1::cout' of size 160 at 0x7f74d5e21f30 (libc++.so.1+0x0000000cdf50)
    Thread T4 'b-txindex' (tid=22989, running) created by main thread at:
      #0 pthread_create <null> (test_bitcoin+0x1184cd)
      #1 std::__1::__libcpp_thread_create(unsigned long*, void* (*)(void*), void*) /usr/lib/llvm-13/bin/../include/c++/v1/__threading_support:514:10 (test_bitcoin+0xa23f1b)
      #2 std::__1::thread::thread<void (*)(char const*, std::__1::function<void ()>), char const*, BaseIndex::Start(CChainState&)::$_0, void>(void (*&&)(char const*, std::__1::function<void ()>), char const*&&, BaseIndex::Start(CChainState&)::$_0&&) /usr/lib/llvm-13/bin/../include/c++/v1/thread:307:16 (test_bitcoin+0xa23f1b)
      #3 BaseIndex::Start(CChainState&) src/index/base.cpp:363:21 (test_bitcoin+0xa23f1b)
      #4 txindex_tests::txindex_initial_sync::test_method() src/test/txindex_tests.cpp:31:5 (test_bitcoin+0x78adfa)
      #5 txindex_tests::txindex_initial_sync_invoker() src/test/txindex_tests.cpp:16:1 (test_bitcoin+0x78a384)
      #6 boost::detail::function::void_function_invoker0<void (*)(), void>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:117:11 (test_bitcoin+0x2bf30d)
      #7 boost::function0<void>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x224027)
      #8 boost::detail::forward::operator()() /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1368:32 (test_bitcoin+0x224027)
      #9 boost::detail::function::function_obj_invoker0<boost::detail::forward, int>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:137:18 (test_bitcoin+0x224027)
      #10 boost::function0<int>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x1ac66c)
      #11 int boost::detail::do_invoke<boost::shared_ptr<boost::detail::translator_holder_base>, boost::function<int ()> >(boost::shared_ptr<boost::detail::translator_holder_base> const&, boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:290:30 (test_bitcoin+0x1ac66c)
      #12 boost::execution_monitor::catch_signals(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:879:16 (test_bitcoin+0x1ac66c)
      #13 boost::execution_monitor::execute(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1277:16 (test_bitcoin+0x1ac980)
      #14 boost::execution_monitor::vexecute(boost::function<void ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1377:5 (test_bitcoin+0x1a7f9b)
      bitcoin#15 boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::function<void ()> const&, unsigned long) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_monitor.ipp:49:9 (test_bitcoin+0x1a7f9b)
      bitcoin#16 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:823:44 (test_bitcoin+0x1e0d5c)
      bitcoin#17 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      bitcoin#18 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      bitcoin#19 boost::unit_test::framework::run(unsigned long, bool) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:1696:29 (test_bitcoin+0x1a6bfb)
      bitcoin#20 boost::unit_test::unit_test_main(boost::unit_test::test_suite* (*)(int, char**), int, char**) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:248:9 (test_bitcoin+0x1c4ed6)
      bitcoin#21 main /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:304:12 (test_bitcoin+0x1c5506)
  SUMMARY: ThreadSanitizer: data race /usr/lib/llvm-13/bin/../include/c++/v1/ios:513:18 in std::__1::ios_base::precision(long)
  ==================
  Exit status: 2

ACKs for top commit:
  fanquake:
    CI ignored ACK fa7e147

Tree-SHA512: 5194e026410b96ad3c8addeecce0a55ee0271c3cfac9fa0715345b1a50d59925549cee0a3e415e5837ae6d2f214a7b622c73cfc7fdf41d5e55c24fb87fddb9d1
JeremyRubin pushed a commit that referenced this pull request Dec 17, 2022
fac04cb refactor: Add lock annotations to Active* methods (MacroFake)
fac15ff Fix logical race in rest_getutxos (MacroFake)
fa97a52 Fix UB/data-race in RPCNotifyBlockChange (MacroFake)
fa530bc Add ChainstateManager::GetMutex(), an alias for ::cs_main (MacroFake)

Pull request description:

  This fixes two issues:

  * A data race in `ActiveChain`, which returns a reference to the chain (a `std::vector`), which is not thread safe. See also below traceback.
  * A corrupt rest response, which returns a blockheight and blockhash, which are unrelated to each other and to the result, as the chain might advance between each call without cs_main held.

  The issues are fixed by taking cs_main and holding it for the required time.

  ```
  ==================
  WARNING: ThreadSanitizer: data race (pid=32335)
    Write of size 8 at 0x7b3c000008f0 by thread T22 (mutexes: write M131626, write M151, write M131553):
      #0 std::__1::enable_if<(is_move_constructible<CBlockIndex**>::value) && (is_move_assignable<CBlockIndex**>::value), void>::type std::__1::swap<CBlockIndex**>(CBlockIndex**&, CBlockIndex**&) /usr/lib/llvm-13/bin/../include/c++/v1/__utility/swap.h:39:7 (bitcoind+0x501239)
      #1 std::__1::vector<CBlockIndex*, std::__1::allocator<CBlockIndex*> >::__swap_out_circular_buffer(std::__1::__split_buffer<CBlockIndex*, std::__1::allocator<CBlockIndex*>&>&) /usr/lib/llvm-13/bin/../include/c++/v1/vector:977:5 (bitcoind+0x501239)
      #2 std::__1::vector<CBlockIndex*, std::__1::allocator<CBlockIndex*> >::__append(unsigned long) /usr/lib/llvm-13/bin/../include/c++/v1/vector:1117:9 (bitcoind+0x501239)
      #3 std::__1::vector<CBlockIndex*, std::__1::allocator<CBlockIndex*> >::resize(unsigned long) /usr/lib/llvm-13/bin/../include/c++/v1/vector:2046:15 (bitcoind+0x4ffe29)
      #4 CChain::SetTip(CBlockIndex*) src/chain.cpp:19:12 (bitcoind+0x4ffe29)
      #5 CChainState::ConnectTip(BlockValidationState&, CBlockIndex*, std::__1::shared_ptr<CBlock const> const&, ConnectTrace&, DisconnectedBlockTransactions&) src/validation.cpp:2748:13 (bitcoind+0x475d00)
      #6 CChainState::ActivateBestChainStep(BlockValidationState&, CBlockIndex*, std::__1::shared_ptr<CBlock const> const&, bool&, ConnectTrace&) src/validation.cpp:2884:18 (bitcoind+0x47739e)
      #7 CChainState::ActivateBestChain(BlockValidationState&, std::__1::shared_ptr<CBlock const>) src/validation.cpp:3011:22 (bitcoind+0x477baf)
      #8 node::ThreadImport(ChainstateManager&, std::__1::vector<fs::path, std::__1::allocator<fs::path> >, ArgsManager const&) src/node/blockstorage.cpp:883:30 (bitcoind+0x23cd74)
      #9 AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7::operator()() const src/init.cpp:1657:9 (bitcoind+0x15863e)
      #10 decltype(static_cast<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&>(fp)()) std::__1::__invoke<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&>(AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&) /usr/lib/llvm-13/bin/../include/c++/v1/type_traits:3918:1 (bitcoind+0x15863e)
      #11 void std::__1::__invoke_void_return_wrapper<void, true>::__call<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&>(AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&) /usr/lib/llvm-13/bin/../include/c++/v1/__functional/invoke.h:61:9 (bitcoind+0x15863e)
      #12 std::__1::__function::__alloc_func<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7, std::__1::allocator<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>, void ()>::operator()() /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:171:16 (bitcoind+0x15863e)
      #13 std::__1::__function::__func<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7, std::__1::allocator<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>, void ()>::operator()() /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:345:12 (bitcoind+0x15863e)
      #14 std::__1::__function::__value_func<void ()>::operator()() const /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:498:16 (bitcoind+0x88891f)
      bitcoin#15 std::__1::function<void ()>::operator()() const /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:1175:12 (bitcoind+0x88891f)
      bitcoin#16 util::TraceThread(char const*, std::__1::function<void ()>) src/util/thread.cpp:18:9 (bitcoind+0x88891f)
      bitcoin#17 decltype(static_cast<void (*>(fp)(static_cast<char const*>(fp0), static_cast<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>(fp0))) std::__1::__invoke<void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>(void (*&&)(char const*, std::__1::function<void ()>), char const*&&, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&&) /usr/lib/llvm-13/bin/../include/c++/v1/type_traits:3918:1 (bitcoind+0x157e6a)
      bitcoin#18 void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7, 2ul, 3ul>(std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>&, std::__1::__tuple_indices<2ul, 3ul>) /usr/lib/llvm-13/bin/../include/c++/v1/thread:280:5 (bitcoind+0x157e6a)
      bitcoin#19 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7> >(void*) /usr/lib/llvm-13/bin/../include/c++/v1/thread:291:5 (bitcoind+0x157e6a)
    Previous read of size 8 at 0x7b3c000008f0 by main thread:
      #0 std::__1::vector<CBlockIndex*, std::__1::allocator<CBlockIndex*> >::size() const /usr/lib/llvm-13/bin/../include/c++/v1/vector:680:61 (bitcoind+0x15179d)
      #1 CChain::Tip() const src/./chain.h:449:23 (bitcoind+0x15179d)
      #2 ChainstateManager::ActiveTip() const src/./validation.h:927:59 (bitcoind+0x15179d)
      #3 AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*) src/init.cpp:1841:35 (bitcoind+0x15179d)
      #4 AppInit(node::NodeContext&, int, char**) src/bitcoind.cpp:231:43 (bitcoind+0x133fd2)
      #5 main src/bitcoind.cpp:275:13 (bitcoind+0x133fd2)
    Location is heap block of size 232 at 0x7b3c00000870 allocated by main thread:
      #0 operator new(unsigned long) <null> (bitcoind+0x132668)
      #1 ChainstateManager::InitializeChainstate(CTxMemPool*, std::__1::optional<uint256> const&) src/validation.cpp:4851:21 (bitcoind+0x48e26b)
      #2 node::LoadChainstate(bool, ChainstateManager&, CTxMemPool*, bool, Consensus::Params const&, bool, long, long, long, bool, bool, std::__1::function<bool ()>, std::__1::function<void ()>) src/node/chainstate.cpp:31:14 (bitcoind+0x24de07)
      #3 AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*) src/init.cpp:1438:32 (bitcoind+0x14e994)
      #4 AppInit(node::NodeContext&, int, char**) src/bitcoind.cpp:231:43 (bitcoind+0x133fd2)
      #5 main src/bitcoind.cpp:275:13 (bitcoind+0x133fd2)
    Mutex M131626 (0x7b3c00000898) created at:
      #0 pthread_mutex_lock <null> (bitcoind+0xda898)
      #1 std::__1::mutex::lock() <null> (libc++.so.1+0x49f35)
      #2 node::ThreadImport(ChainstateManager&, std::__1::vector<fs::path, std::__1::allocator<fs::path> >, ArgsManager const&) src/node/blockstorage.cpp:883:30 (bitcoind+0x23cd74)
      #3 AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7::operator()() const src/init.cpp:1657:9 (bitcoind+0x15863e)
      #4 decltype(static_cast<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&>(fp)()) std::__1::__invoke<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&>(AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&) /usr/lib/llvm-13/bin/../include/c++/v1/type_traits:3918:1 (bitcoind+0x15863e)
      #5 void std::__1::__invoke_void_return_wrapper<void, true>::__call<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&>(AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&) /usr/lib/llvm-13/bin/../include/c++/v1/__functional/invoke.h:61:9 (bitcoind+0x15863e)
      #6 std::__1::__function::__alloc_func<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7, std::__1::allocator<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>, void ()>::operator()() /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:171:16 (bitcoind+0x15863e)
      #7 std::__1::__function::__func<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7, std::__1::allocator<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>, void ()>::operator()() /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:345:12 (bitcoind+0x15863e)
      #8 std::__1::__function::__value_func<void ()>::operator()() const /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:498:16 (bitcoind+0x88891f)
      #9 std::__1::function<void ()>::operator()() const /usr/lib/llvm-13/bin/../include/c++/v1/__functional/function.h:1175:12 (bitcoind+0x88891f)
      #10 util::TraceThread(char const*, std::__1::function<void ()>) src/util/thread.cpp:18:9 (bitcoind+0x88891f)
      #11 decltype(static_cast<void (*>(fp)(static_cast<char const*>(fp0), static_cast<AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>(fp0))) std::__1::__invoke<void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>(void (*&&)(char const*, std::__1::function<void ()>), char const*&&, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&&) /usr/lib/llvm-13/bin/../include/c++/v1/type_traits:3918:1 (bitcoind+0x157e6a)
      #12 void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7, 2ul, 3ul>(std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7>&, std::__1::__tuple_indices<2ul, 3ul>) /usr/lib/llvm-13/bin/../include/c++/v1/thread:280:5 (bitcoind+0x157e6a)
      #13 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(char const*, std::__1::function<void ()>), char const*, AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7> >(void*) /usr/lib/llvm-13/bin/../include/c++/v1/thread:291:5 (bitcoind+0x157e6a)
    Mutex M151 (0x55aacb8ea030) created at:
      #0 pthread_mutex_init <null> (bitcoind+0xbed2f)
      #1 std::__1::recursive_mutex::recursive_mutex() <null> (libc++.so.1+0x49fb3)
      #2 __libc_start_main <null> (libc.so.6+0x29eba)
    Mutex M131553 (0x7b4c000042e0) created at:
      #0 pthread_mutex_init <null> (bitcoind+0xbed2f)
      #1 std::__1::recursive_mutex::recursive_mutex() <null> (libc++.so.1+0x49fb3)
      #2 std::__1::__unique_if<CTxMemPool>::__unique_single std::__1::make_unique<CTxMemPool, CBlockPolicyEstimator*, int const&>(CBlockPolicyEstimator*&&, int const&) /usr/lib/llvm-13/bin/../include/c++/v1/__memory/unique_ptr.h:728:32 (bitcoind+0x15c81d)
      #3 AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*) src/init.cpp:1426:24 (bitcoind+0x14e7b4)
      #4 AppInit(node::NodeContext&, int, char**) src/bitcoind.cpp:231:43 (bitcoind+0x133fd2)
      #5 main src/bitcoind.cpp:275:13 (bitcoind+0x133fd2)
    Thread T22 'b-loadblk' (tid=32370, running) created by main thread at:
      #0 pthread_create <null> (bitcoind+0xbd5bd)
      #1 std::__1::__libcpp_thread_create(unsigned long*, void* (*)(void*), void*) /usr/lib/llvm-13/bin/../include/c++/v1/__threading_support:443:10 (bitcoind+0x155e06)
      #2 std::__1::thread::thread<void (*)(char const*, std::__1::function<void ()>), char const (&) [8], AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7, void>(void (*&&)(char const*, std::__1::function<void ()>), char const (&) [8], AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*)::$_7&&) /usr/lib/llvm-13/bin/../include/c++/v1/thread:307:16 (bitcoind+0x155e06)
      #3 AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*) src/init.cpp:1656:29 (bitcoind+0x150164)
      #4 AppInit(node::NodeContext&, int, char**) src/bitcoind.cpp:231:43 (bitcoind+0x133fd2)
      #5 main src/bitcoind.cpp:275:13 (bitcoind+0x133fd2)
  SUMMARY: ThreadSanitizer: data race /usr/lib/llvm-13/bin/../include/c++/v1/__utility/swap.h:39:7 in std::__1::enable_if<(is_move_constructible<CBlockIndex**>::value) && (is_move_assignable<CBlockIndex**>::value), void>::type std::__1::swap<CBlockIndex**>(CBlockIndex**&, CBlockIndex**&)
  ==================
  ```

  From https://cirrus-ci.com/task/5612886578954240?logs=ci#L4868

ACKs for top commit:
  achow101:
    re-ACK fac04cb
  theStack:
    Code-review ACK fac04cb

Tree-SHA512: 9d619f99ff6373874c7ffe1db20674575605646b4b54b692fb54515a4a49f110a770026d7320ed6dfeaa7976be4cd89e93f821acdbf22c7662bd1c5be0cedcd2
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
3 participants