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TSAN data race in LangBindHelper_HandoverBetweenThreads on stack ArrayInteger::find #6624

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finnschiermer opened this issue May 15, 2023 · 2 comments
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TSAN data race in LangBindHelper_HandoverBetweenThreads on stack ArrayInteger::find #6624

finnschiermer opened this issue May 15, 2023 · 2 comments
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@finnschiermer
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Just capturing a stack trace from the CI for later investigation

[2023/05/12 19:27:07.460] 1: ==================
[2023/05/12 19:27:07.460] 1: WARNING: ThreadSanitizer: data race (pid=103659)
[2023/05/12 19:27:07.460] 1:   Read of size 8 at 0x7f59695144a0 by thread T76:
[2023/05/12 19:27:07.460] 1:     #0 bool realm::ArrayWithFind::find_sse_intern<realm::Greater, 8ul, decltype(nullptr)>(long long __vector(2)*, long long __vector(2)*, unsigned long, realm::QueryStateBase*, unsigned long, decltype(nullptr)) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/array_with_find.hpp:779 (realm-tests+0x142ec35)
[2023/05/12 19:27:07.460] 1:     #1 bool realm::ArrayWithFind::find_sse<realm::Greater, 8ul, decltype(nullptr)>(long, long long __vector(2)*, unsigned long, realm::QueryStateBase*, unsigned long, decltype(nullptr)) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/array_with_find.hpp:747 (realm-tests+0x142ec35)
[2023/05/12 19:27:07.461] 1:     #2 bool realm::ArrayWithFind::find_optimized<realm::Greater, 8ul, decltype(nullptr)>(long, unsigned long, unsigned long, unsigned long, realm::QueryStateBase*, decltype(nullptr)) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/array_with_find.hpp:392 (realm-tests+0x142ec35)
[2023/05/12 19:27:07.461] 1:     #3 bool realm::ArrayWithFind::find<realm::Greater, decltype(nullptr)>(long, unsigned long, unsigned long, unsigned long, realm::QueryStateBase*, decltype(nullptr)) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/array_with_find.hpp:721 (realm-tests+0x142d5d8)
[2023/05/12 19:27:07.461] 1:     #4 bool realm::ArrayInteger::find<realm::Greater, decltype(nullptr)>(long, unsigned long, unsigned long, realm::QueryStateBase*, decltype(nullptr)) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/array_integer_tpl.hpp:30 (realm-tests+0x151aa66)
[2023/05/12 19:27:07.461] 1:     #5 unsigned long realm::IntegerNodeBase<realm::ArrayInteger>::find_all_local<realm::Greater>(unsigned long, unsigned long) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/query_engine.hpp:442 (realm-tests+0x151aa66)
[2023/05/12 19:27:07.461] 1:     #6 realm::IntegerNode<realm::ArrayInteger, realm::Greater>::find_all_local(unsigned long, unsigned long) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/query_engine.hpp:498 (realm-tests+0x151a815)
[2023/05/12 19:27:07.461] 1:     #7 realm::ParentNode::aggregate_local(realm::QueryStateBase*, unsigned long, unsigned long, unsigned long, realm::ArrayPayload*) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/query_engine.cpp:104 (realm-tests+0x16dce48)
[2023/05/12 19:27:07.461] 1:     #8 realm::Query::aggregate_internal(realm::ParentNode*, realm::QueryStateBase*, unsigned long, unsigned long, realm::ArrayPayload*) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/query.cpp:1065 (realm-tests+0x14d82cb)
[2023/05/12 19:27:07.461] 1:     #9 operator() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/query.cpp:1359 (realm-tests+0x14dcae7)
[2023/05/12 19:27:07.461] 1:     #10 operator() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/function_ref.hpp:106 (realm-tests+0x14dcae7)
[2023/05/12 19:27:07.461] 1:     #11 __invoke /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/function_ref.hpp:105 (realm-tests+0x14dcae7)
[2023/05/12 19:27:07.461] 1:     #12 realm::util::FunctionRef<realm::IteratorControl (realm::Cluster const*)>::operator()(realm::Cluster const*) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/function_ref.hpp:119 (realm-tests+0x15adb84)
[2023/05/12 19:27:07.461] 1:     #13 realm::ClusterNodeInner::traverse(realm::util::FunctionRef<realm::IteratorControl (realm::Cluster const*)>, long) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/cluster_tree.cpp:699 (realm-tests+0x15adb84)
[2023/05/12 19:27:07.461] 1:     #14 realm::ClusterTree::traverse(realm::util::FunctionRef<realm::IteratorControl (realm::Cluster const*)>) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/cluster_tree.cpp:1067 (realm-tests+0x15af464)
[2023/05/12 19:27:07.461] 1:     #15 realm::Table::traverse_clusters(realm::util::FunctionRef<realm::IteratorControl (realm::Cluster const*)>) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/table.hpp:327 (realm-tests+0x14d9c87)
[2023/05/12 19:27:07.461] 1:     #16 realm::Query::do_find_all(realm::TableView&, unsigned long) const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/query.cpp:1364 (realm-tests+0x14d9c87)
[2023/05/12 19:27:07.461] 1:     #17 realm::TableView::do_sync() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/table_view.cpp:493 (realm-tests+0x174eae8)
[2023/05/12 19:27:07.461] 1:     #18 realm::TableView::sync_if_needed() const /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/table_view.cpp:365 (realm-tests+0x174e6e1)
[2023/05/12 19:27:07.461] 1:     #19 (anonymous namespace)::handover_querier((anonymous namespace)::HandoverControl<(anonymous namespace)::Work>*, realm::test_util::unit_test::TestContext&, std::shared_ptr<realm::DB>) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/test_lang_bind_helper.cpp:3841 (realm-tests+0xd0628d)
[2023/05/12 19:27:07.461] 1:     #20 operator() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/test_lang_bind_helper.cpp:3962 (realm-tests+0xd0628d)
[2023/05/12 19:27:07.461] 1:     #21 void* realm::util::Thread::entry_point<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_16>(void*) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/thread.hpp:483 (realm-tests+0xd0628d)
[2023/05/12 19:27:07.462] 1:
[2023/05/12 19:27:07.462] 1:   Previous write of size 8 at 0x7f59695144a0 by thread T79:
[2023/05/12 19:27:07.462] 1:     [failed to restore the stack]
[2023/05/12 19:27:07.462] 1:
[2023/05/12 19:27:07.462] 1:   Thread T76 (tid=103876, running) created by thread T15 at:
[2023/05/12 19:27:07.462] 1:     #0 pthread_create /home/nnelson/Documents/llvm-project/llvm/utils/release/final/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:966 (realm-tests+0x78994b)
[2023/05/12 19:27:07.462] 1:     #1 realm::util::Thread::start(void* (*)(void*), void*) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/thread.hpp:472 (realm-tests+0xcb197b)
[2023/05/12 19:27:07.462] 1:     #2 void realm::util::Thread::start<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_16>(Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_16) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/thread.hpp:450 (realm-tests+0xcb197b)
[2023/05/12 19:27:07.462] 1:     #3 Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/test_lang_bind_helper.cpp:3961 (realm-tests+0xcb197b)
[2023/05/12 19:27:07.462] 1:     #4 realm::test_util::unit_test::RegisterTest<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads>::run_test(realm::test_util::unit_test::TestContext&) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.hpp:640 (realm-tests+0xd0de90)
[2023/05/12 19:27:07.462] 1:     #5 realm::test_util::unit_test::TestList::ThreadContextImpl::run(realm::test_util::unit_test::TestList::SharedContextImpl::Entry, realm::util::UniqueLock&) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:728 (realm-tests+0x14487de)
[2023/05/12 19:27:07.462] 1:     #6 realm::test_util::unit_test::TestList::ThreadContextImpl::run() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:682 (realm-tests+0x14481a3)
[2023/05/12 19:27:07.462] 1:     #7 operator() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:641 (realm-tests+0x144d7ba)
[2023/05/12 19:27:07.462] 1:     #8 operator() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:645 (realm-tests+0x144d7ba)
[2023/05/12 19:27:07.462] 1:     #9 void* realm::util::Thread::entry_point<realm::test_util::unit_test::TestList::run(realm::test_util::unit_test::TestList::Config)::$_1>(void*) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/thread.hpp:483 (realm-tests+0x144d7ba)
[2023/05/12 19:27:07.462] 1:
[2023/05/12 19:27:07.462] 1:   Thread T79 (tid=103877, running) created by thread T15 at:
[2023/05/12 19:27:07.462] 1:     #0 pthread_create /home/nnelson/Documents/llvm-project/llvm/utils/release/final/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:966 (realm-tests+0x78994b)
[2023/05/12 19:27:07.462] 1:     #1 realm::util::Thread::start(void* (*)(void*), void*) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/thread.hpp:472 (realm-tests+0xcb19d5)
[2023/05/12 19:27:07.462] 1:     #2 void realm::util::Thread::start<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_17>(Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_17) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/thread.hpp:450 (realm-tests+0xcb19d5)
[2023/05/12 19:27:07.462] 1:     #3 Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/test_lang_bind_helper.cpp:3964 (realm-tests+0xcb19d5)
[2023/05/12 19:27:07.462] 1:     #4 realm::test_util::unit_test::RegisterTest<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads>::run_test(realm::test_util::unit_test::TestContext&) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.hpp:640 (realm-tests+0xd0de90)
[2023/05/12 19:27:07.462] 1:     #5 realm::test_util::unit_test::TestList::ThreadContextImpl::run(realm::test_util::unit_test::TestList::SharedContextImpl::Entry, realm::util::UniqueLock&) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:728 (realm-tests+0x14487de)
[2023/05/12 19:27:07.462] 1:     #6 realm::test_util::unit_test::TestList::ThreadContextImpl::run() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:682 (realm-tests+0x14481a3)
[2023/05/12 19:27:07.462] 1:     #7 operator() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:641 (realm-tests+0x144d7ba)
[2023/05/12 19:27:07.463] 1:     #8 operator() /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../test/util/unit_test.cpp:645 (realm-tests+0x144d7ba)
[2023/05/12 19:27:07.463] 1:     #9 void* realm::util::Thread::entry_point<realm::test_util::unit_test::TestList::run(realm::test_util::unit_test::TestList::Config)::$_1>(void*) /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/util/thread.hpp:483 (realm-tests+0x144d7ba)
[2023/05/12 19:27:07.463] 1:
[2023/05/12 19:27:07.463] 1: SUMMARY: ThreadSanitizer: data race /data/mci/63024f932e70faf62d309316edb21515/realm-core/build/../src/realm/array_with_find.hpp:779 in bool realm::ArrayWithFind::find_sse_intern<realm::Greater, 8ul, decltype(nullptr)>(long long __vector(2)*, long long __vector(2)*, unsigned long, realm::QueryStateBase*, unsigned long, decltype(nullptr)) const
@finnschiermer finnschiermer self-assigned this May 15, 2023
@finnschiermer finnschiermer mentioned this issue Jun 23, 2023
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@finnschiermer finnschiermer mentioned this issue Jul 21, 2023
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@ironage
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ironage commented Aug 31, 2023

Another report by TSAN of the race in this test LangBindHelper_HandoverBetweenThreads, on Build Variant:
Ubuntu 20.04 x86_64 (Clang 11 Encryption Enabled w/TSAN):

[2023/08/31 18:14:26.656] 1: ==================
[2023/08/31 18:14:26.656] 1: WARNING: ThreadSanitizer: data race (pid=6208)
[2023/08/31 18:14:26.656] 1:   Read of size 2 at 0x7fa1d63a0a8e by thread T382:
[2023/08/31 18:14:26.656] 1:     #0 long realm::Array::get_universal<16ul>(char const*, unsigned long) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/array.hpp:695 (realm-tests+0x150fb49)
[2023/08/31 18:14:26.656] 1:     #1 long realm::Array::get<16ul>(unsigned long) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/array.hpp:714 (realm-tests+0x150fb49)
[2023/08/31 18:14:26.656] 1:     #2 realm::Array::get(unsigned long) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/array.hpp:721 (realm-tests+0x8d355b)
[2023/08/31 18:14:26.656] 1:     #3 realm::Array::get_as_ref(unsigned long) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/array.hpp:754 (realm-tests+0x8d355b)
[2023/08/31 18:14:26.656] 1:     #4 realm::ClusterNodeInner::_get_child_ref(unsigned long) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/cluster_tree.cpp:167 (realm-tests+0x15615f2)
[2023/08/31 18:14:26.656] 1:     #5 realm::ClusterNodeInner::traverse(realm::util::FunctionRef<realm::IteratorControl (realm::Cluster const*)>, long) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/cluster_tree.cpp:691 (realm-tests+0x15615f2)
[2023/08/31 18:14:26.656] 1:     #6 realm::ClusterTree::traverse(realm::util::FunctionRef<realm::IteratorControl (realm::Cluster const*)>) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/cluster_tree.cpp:1042 (realm-tests+0x1562df4)
[2023/08/31 18:14:26.656] 1:     #7 realm::Table::traverse_clusters(realm::util::FunctionRef<realm::IteratorControl (realm::Cluster const*)>) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/table.hpp:327 (realm-tests+0x148e6ae)
[2023/08/31 18:14:26.656] 1:     #8 realm::Query::do_count(unsigned long) const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/query.cpp:1498 (realm-tests+0x148e6ae)
[2023/08/31 18:14:26.656] 1:     #9 realm::Query::count() const /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/query.cpp:1520 (realm-tests+0x148eaac)
[2023/08/31 18:14:26.656] 1:     #10 (anonymous namespace)::handover_querier((anonymous namespace)::HandoverControl<(anonymous namespace)::Work>*, realm::test_util::unit_test::TestContext&, std::shared_ptr<realm::DB>) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/test_lang_bind_helper.cpp:3854 (realm-tests+0xcac042)
[2023/08/31 18:14:26.656] 1:     #11 operator() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/test_lang_bind_helper.cpp:3962 (realm-tests+0xcac042)
[2023/08/31 18:14:26.656] 1:     #12 void* realm::util::Thread::entry_point<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_16>(void*) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/util/thread.hpp:483 (realm-tests+0xcac042)
[2023/08/31 18:14:26.656] 1:
[2023/08/31 18:14:26.656] 1:   Previous write of size 8 at 0x7fa1d63a0a88 by thread T384:
[2023/08/31 18:14:26.656] 1:     [failed to restore the stack]
[2023/08/31 18:14:26.656] 1:
[2023/08/31 18:14:26.656] 1:   Thread T382 (tid=7167, running) created by thread T18 at:
[2023/08/31 18:14:26.656] 1:     #0 pthread_create /home/nnelson/Documents/llvm-project/llvm/utils/release/final/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:966 (realm-tests+0x77a94b)
[2023/08/31 18:14:26.656] 1:     #1 realm::util::Thread::start(void* (*)(void*), void*) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/util/thread.hpp:472 (realm-tests+0xc584fb)
[2023/08/31 18:14:26.656] 1:     #2 void realm::util::Thread::start<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_16>(Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_16) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/util/thread.hpp:450 (realm-tests+0xc584fb)
[2023/08/31 18:14:26.656] 1:     #3 Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/test_lang_bind_helper.cpp:3961 (realm-tests+0xc584fb)
[2023/08/31 18:14:26.656] 1:     #4 realm::test_util::unit_test::RegisterTest<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads>::run_test(realm::test_util::unit_test::TestContext&) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.hpp:640 (realm-tests+0xcb3940)
[2023/08/31 18:14:26.656] 1:     #5 realm::test_util::unit_test::TestList::ThreadContextImpl::run(realm::test_util::unit_test::TestList::SharedContextImpl::Entry, realm::util::UniqueLock&) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:728 (realm-tests+0x13fb3ce)
[2023/08/31 18:14:26.656] 1:     #6 realm::test_util::unit_test::TestList::ThreadContextImpl::run() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:682 (realm-tests+0x13fad93)
[2023/08/31 18:14:26.656] 1:     #7 operator() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:641 (realm-tests+0x14003ea)
[2023/08/31 18:14:26.656] 1:     #8 operator() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:645 (realm-tests+0x14003ea)
[2023/08/31 18:14:26.656] 1:     #9 void* realm::util::Thread::entry_point<realm::test_util::unit_test::TestList::run(realm::test_util::unit_test::TestList::Config)::$_1>(void*) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/util/thread.hpp:483 (realm-tests+0x14003ea)
[2023/08/31 18:14:26.657] 1:
[2023/08/31 18:14:26.657] 1:   Thread T384 (tid=7169, running) created by thread T18 at:
[2023/08/31 18:14:26.657] 1:     #0 pthread_create /home/nnelson/Documents/llvm-project/llvm/utils/release/final/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:966 (realm-tests+0x77a94b)
[2023/08/31 18:14:26.660] 1:     #1 realm::util::Thread::start(void* (*)(void*), void*) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/util/thread.hpp:472 (realm-tests+0xc58555)
[2023/08/31 18:14:26.662] 1:     #2 void realm::util::Thread::start<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_17>(Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run()::$_17) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/util/thread.hpp:450 (realm-tests+0xc58555)
[2023/08/31 18:14:26.667] 1:     #3 Realm_UnitTest__LangBindHelper_HandoverBetweenThreads::test_run() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/test_lang_bind_helper.cpp:3964 (realm-tests+0xc58555)
[2023/08/31 18:14:26.667] 1:     #4 realm::test_util::unit_test::RegisterTest<Realm_UnitTest__LangBindHelper_HandoverBetweenThreads>::run_test(realm::test_util::unit_test::TestContext&) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.hpp:640 (realm-tests+0xcb3940)
[2023/08/31 18:14:26.670] 1:     #5 realm::test_util::unit_test::TestList::ThreadContextImpl::run(realm::test_util::unit_test::TestList::SharedContextImpl::Entry, realm::util::UniqueLock&) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:728 (realm-tests+0x13fb3ce)
[2023/08/31 18:14:26.670] 1:     #6 realm::test_util::unit_test::TestList::ThreadContextImpl::run() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:682 (realm-tests+0x13fad93)
[2023/08/31 18:14:26.671] 1:     #7 operator() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:641 (realm-tests+0x14003ea)
[2023/08/31 18:14:26.672] 1:     #8 operator() /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../test/util/unit_test.cpp:645 (realm-tests+0x14003ea)
[2023/08/31 18:14:26.673] 1:     #9 void* realm::util::Thread::entry_point<realm::test_util::unit_test::TestList::run(realm::test_util::unit_test::TestList::Config)::$_1>(void*) /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/util/thread.hpp:483 (realm-tests+0x14003ea)
[2023/08/31 18:14:26.674] 1:
[2023/08/31 18:14:26.674] 1: SUMMARY: ThreadSanitizer: data race /data/mci/b439bce6052c384d1322197f0ea69a8c/realm-core/build/../src/realm/array.hpp:695 in long realm::Array::get_universal<16ul>(char const*, unsigned long) const
[2023/08/31 18:14:27.225] 1: ==================

@sync-by-unito sync-by-unito bot mentioned this issue Sep 28, 2023
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@kiburtse kiburtse mentioned this issue Sep 29, 2023
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@kiburtse kiburtse changed the title Data race reported in LangBindHelper_HandoverBetweenThreads TSAB Data Race in LangBindHelper_HandoverBetweenThreads on stack ArrayInteger::find Oct 11, 2023
@kiburtse kiburtse mentioned this issue Oct 11, 2023
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Duplicate of #6474

ok, i close it for now and track all relevant failures under original issue for this test. Stacktraces mentioned here are essentially coming from the same code path, must the same issue. Also, the second stack trace (is the only one we still constantly see) is what we still see after the fix for freelist - last occurrence was recorded under other ticket a few weeks ago.

@kiburtse kiburtse closed this as not planned Won't fix, can't repro, duplicate, stale Oct 12, 2023
@kiburtse kiburtse changed the title TSAB Data Race in LangBindHelper_HandoverBetweenThreads on stack ArrayInteger::find TSAN data race in LangBindHelper_HandoverBetweenThreads on stack ArrayInteger::find Oct 12, 2023
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