Make the Dart VM run cleanly under TSan

[rmacnak-google]

Various embedders of the VM, including the standalone embeder, would like to test themselves with TSan but are currently unable to because the VM itself generates various TSan errors.

[alexmarkov]

There are many flaky failures on TSAN bot. For example:

/==================================================================================\
| vm/cc/OptimizeCompileFunctionOnHelperThread broke (Pass -> Crash, expected Pass) |
\==================================================================================/

--- Command "run_vm_unittest" (took 21.000820s):
DART_CONFIGURATION=ReleaseTSANX64 out/ReleaseTSANX64/run_vm_tests --dfe=/b/s/w/ir/cache/builder/sdk/out/ReleaseTSANX64/gen/kernel-service.dart.snapshot --ignore-unrecognized-flags OptimizeCompileFunctionOnHelperThread

exit code:
-6

stdout:
Running test: OptimizeCompileFunctionOnHelperThread
Done: OptimizeCompileFunctionOnHelperThread

stderr:
/usr/bin/addr2line: '/memfd:dart-codespace (deleted)': No such file
==24408==WARNING: Can't read from symbolizer at fd 9
/usr/bin/addr2line: '/memfd:dart-codespace (deleted)': No such file
==24408==WARNING: Can't read from symbolizer at fd 9
/usr/bin/addr2line: '/memfd:dart-codespace (deleted)': No such file
==24408==WARNING: Can't read from symbolizer at fd 9
/usr/bin/addr2line: '/memfd:dart-codespace (deleted)': No such file
==24408==WARNING: Can't read from symbolizer at fd 9
==24408==WARNING: Failed to use and restart external symbolizer!
==================
WARNING: ThreadSanitizer: data race (pid=24408)
  Write of size 1 at 0x7b3400000338 by main thread (mutexes: write M107):
    #0 dart::BackgroundCompiler::Stop() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:1316 (run_vm_tests+0x4314bc8)
    #1 dart::BackgroundCompiler::Stop(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.h:146 (run_vm_tests+0x38bfaab)
    #2 dart::Dart_TestHelperOptimizeCompileFunctionOnHelperThread(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler_test.cc:99 (run_vm_tests+0x38bfaab)
    #3 dart::Dart_TestOptimizeCompileFunctionOnHelperThread() ../../out/ReleaseTSANX64/../../runtime/vm/compiler_test.cc:60 (run_vm_tests+0x38bfaab)
    #4 dart::TestCase::Run() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:51 (run_vm_tests+0x3899f2c)
    #5 dart::TestCaseBase::RunTest() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:63 (run_vm_tests+0x389a101)
    #6 dart::TestCaseBase::RunAll() ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:86 (run_vm_tests+0x3a21f48)
    #7 dart::Main(int, char const**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:392 (run_vm_tests+0x389abde)
    #8 main ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:421 (run_vm_tests+0x389a46e)

  Previous read of size 1 at 0x7b3400000338 by thread T5:
    #0 dart::BackgroundCompiler::Run() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:1208 (run_vm_tests+0x43147a6)
    #1 dart::BackgroundCompilerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:1286 (run_vm_tests+0x4315223)
    #2 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (run_vm_tests+0x403d39b)
    #3 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (run_vm_tests+0x403d129)
    #4 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (run_vm_tests+0x3f5621d)

  Location is heap block of size 208 at 0x7b3400000270 allocated by main thread:
    #0 operator new(unsigned long) ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_new_delete.cpp:64 (run_vm_tests+0x3897187)
    #1 Isolate ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1393 (run_vm_tests+0x3e357eb)
    #2 dart::Isolate::InitIsolate(char const*, dart::IsolateGroup*, Dart_IsolateFlags const&, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1485 (run_vm_tests+0x3e3658a)
    #3 dart::Dart::CreateIsolate(char const*, Dart_IsolateFlags const&, dart::IsolateGroup*) ../../out/ReleaseTSANX64/../../runtime/vm/dart.cc:644 (run_vm_tests+0x3db36fb)
    #4 dart::CreateIsolate(dart::IsolateGroup*, bool, char const*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1124 (run_vm_tests+0x4700378)
    #5 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1384 (run_vm_tests+0x4700dcb)
    #6 dart::TestCase::CreateIsolate(unsigned char const*, long, unsigned char const*, char const*, void*, void*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:121 (run_vm_tests+0x3a22221)
    #7 dart::TestCase::CreateTestIsolate(char const*, void*, void*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:140 (run_vm_tests+0x3a22221)
    #8 TestIsolateScope ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.h:426 (run_vm_tests+0x38bf607)
    #9 dart::Dart_TestOptimizeCompileFunctionOnHelperThread() ../../out/ReleaseTSANX64/../../runtime/vm/compiler_test.cc:60 (run_vm_tests+0x38bf607)
    #10 dart::TestCase::Run() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:51 (run_vm_tests+0x3899f2c)
    #11 dart::TestCaseBase::RunTest() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:63 (run_vm_tests+0x389a101)
    #12 dart::TestCaseBase::RunAll() ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:86 (run_vm_tests+0x3a21f48)
    #13 dart::Main(int, char const**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:392 (run_vm_tests+0x389abde)
    #14 main ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:421 (run_vm_tests+0x389a46e)

  Mutex M107 (0x7b3400000280) created at:
    #0 pthread_mutex_init ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1220 (run_vm_tests+0x382b27d)
    #1 Monitor ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:356 (run_vm_tests+0x3f56836)
    #2 BackgroundCompiler ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:1179 (run_vm_tests+0x43141c2)
    #3 Isolate ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1393 (run_vm_tests+0x3e357fe)
    #4 dart::Isolate::InitIsolate(char const*, dart::IsolateGroup*, Dart_IsolateFlags const&, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1485 (run_vm_tests+0x3e3658a)
    #5 dart::Dart::CreateIsolate(char const*, Dart_IsolateFlags const&, dart::IsolateGroup*) ../../out/ReleaseTSANX64/../../runtime/vm/dart.cc:644 (run_vm_tests+0x3db36fb)
    #6 dart::CreateIsolate(dart::IsolateGroup*, bool, char const*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1124 (run_vm_tests+0x4700378)
    #7 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1384 (run_vm_tests+0x4700dcb)
    #8 dart::TestCase::CreateIsolate(unsigned char const*, long, unsigned char const*, char const*, void*, void*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:121 (run_vm_tests+0x3a22221)
    #9 dart::TestCase::CreateTestIsolate(char const*, void*, void*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:140 (run_vm_tests+0x3a22221)
    #10 TestIsolateScope ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.h:426 (run_vm_tests+0x38bf607)
    #11 dart::Dart_TestOptimizeCompileFunctionOnHelperThread() ../../out/ReleaseTSANX64/../../runtime/vm/compiler_test.cc:60 (run_vm_tests+0x38bf607)
    #12 dart::TestCase::Run() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:51 (run_vm_tests+0x3899f2c)
    #13 dart::TestCaseBase::RunTest() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:63 (run_vm_tests+0x389a101)
    #14 dart::TestCaseBase::RunAll() ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:86 (run_vm_tests+0x3a21f48)
    #15 dart::Main(int, char const**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:392 (run_vm_tests+0x389abde)
    #16 main ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:421 (run_vm_tests+0x389a46e)

  Thread T5 'DartWorker' (tid=24464, running) created by thread T4 at:
    #0 pthread_create ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:962 (run_vm_tests+0x3829cfb)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:157 (run_vm_tests+0x3f560ec)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:338 (run_vm_tests+0x403c4b1)
    #3 dart::ThreadPool::RunImpl(std::__2::unique_ptr<dart::ThreadPool::Task, std::__2::default_delete<dart::ThreadPool::Task> >) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:69 (run_vm_tests+0x403c4b1)
    #4 bool dart::ThreadPool::Run<dart::MessageHandlerTask, dart::MessageHandler*>(dart::MessageHandler*&&) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:43 (run_vm_tests+0x3e7988f)
    #5 dart::MessageHandler::PostMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:165 (run_vm_tests+0x3e7988f)
    #6 dart::PortMap::PostMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >, bool) ../../out/ReleaseTSANX64/../../runtime/vm/port.cc:261 (run_vm_tests+0x3f59b4d)
    #7 dart::DN_HelperSendPortImpl_sendInternal_(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments*) ../../out/ReleaseTSANX64/../../runtime/lib/isolate.cc:105 (run_vm_tests+0x3d17839)
    #8 dart::BootstrapNatives::DN_SendPortImpl_sendInternal_(dart::Thread*, dart::Zone*, dart::NativeArguments*) ../../out/ReleaseTSANX64/../../runtime/lib/isolate.cc:91 (run_vm_tests+0x3d17839)
    #9 dart::NativeEntry::BootstrapNativeCallWrapper(_Dart_NativeArguments*, void (*)(_Dart_NativeArguments*)) ../../out/ReleaseTSANX64/../../runtime/vm/native_entry.cc:140 (run_vm_tests+0x3e7cacc)
    #10 <null> <null> (memfd:dart-codespace (deleted)+0x1268)
    #11 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (run_vm_tests+0x3dc1b55)
    #12 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:662 (run_vm_tests+0x3dc1b55)
    #13 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1093 (run_vm_tests+0x3e33aff)
    #14 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (run_vm_tests+0x3e79bb0)
    #15 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:447 (run_vm_tests+0x3e7a60f)
    #16 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (run_vm_tests+0x3e7b2b3)
    #17 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (run_vm_tests+0x403d39b)
    #18 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (run_vm_tests+0x403d129)
    #19 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (run_vm_tests+0x3f5621d)

SUMMARY: ThreadSanitizer: data race ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:1316 in dart::BackgroundCompiler::Stop()
==================
/usr/bin/addr2line: '/memfd:dart-codespace (deleted)': No such file
ThreadSanitizer: reported 1 warnings

--- Re-run this test:
python tools/test.py -n dartk-tsan-linux-release-x64 vm/cc/OptimizeCompileFunctionOnHelperThread

==================
WARNING: ThreadSanitizer: data race (pid=26317)
  Write of size 8 at 0x7b6000000430 by thread T10:
    #0 dart::IntrusiveDListEntry<dart::Isolate, 1>::Prepend(dart::IntrusiveDListEntry<dart::Isolate, 1>*) ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:95 (dart+0x1c36dae)
    #1 dart::IntrusiveDList<dart::Isolate, 1>::Append(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:177 (dart+0x1c36dae)
    #2 dart::IsolateGroup::RegisterIsolateLocked(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:260 (dart+0x1c36dae)
    #3 operator() ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1321 (dart+0x2507b63)
    #4 _ZNSt3__28__invokeIRZN4dart32CreateWithinExistingIsolateGroupEPNS1_12IsolateGroupEPKcPPcE3$_0JEEEDTclclsr3std3__2E7forwardIT_Efp_Espclsr3std3__2E7forwardIT0_Efp0_EEEOSA_DpOSB_ ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/type_traits:3519 (dart+0x2507b63)
    #5 void std::__2::__invoke_void_return_wrapper<void>::__call<dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0&>(dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0&) ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/__functional_base:348 (dart+0x2507b63)
    #6 std::__2::__function::__default_alloc_func<dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0, void ()>::operator()() ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:1590 (dart+0x2507b63)
    #7 void std::__2::__function::__policy_invoker<void ()>::__call_impl<std::__2::__function::__default_alloc_func<dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0, void ()> >(std::__2::__function::__policy_storage const*) ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:2071 (dart+0x2507b63)
    #8 std::__2::__function::__policy_func<void ()>::operator()() const ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:2203 (dart+0x1c370f3)
    #9 std::__2::function<void ()>::operator()() const ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:2473 (dart+0x1c370f3)
    #10 dart::IsolateGroup::RunWithLockedGroup(std::__2::function<void ()>) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:271 (dart+0x1c370f3)
    #11 dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**) ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1297 (dart+0x24cda6f)
    #12 dart::SpawnIsolateTask::Run() ../../out/ReleaseTSANX64/../../runtime/lib/isolate.cc:170 (dart+0x1b31434)
    #13 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #14 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #15 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

  Previous read of size 8 at 0x7b6000000430 by thread T4:
    #0 dart::IntrusiveDListEntry<dart::Isolate, 1>::Prev() ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:122 (dart+0x1c42f2a)
    #1 dart::IntrusiveDList<dart::Isolate, 1>::Last() ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:196 (dart+0x1c42f2a)
    #2 dart::IsolateGroup::RunWithStoppedMutators(std::__2::function<void ()>, std::__2::function<void ()>, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:2513 (dart+0x1c42f2a)
    #3 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:658 (dart+0x20d7490)
    #4 dart::CompileFunctionHelper(dart::CompilationPipeline*, dart::Function const&, bool, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:755 (dart+0x20d7f9d)
    #5 dart::Compiler::CompileOptimizedFunction(dart::Thread*, dart::Function const&, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:949 (dart+0x20d88ee)
    #6 dart::DRT_HelperOptimizeInvokedFunction(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2603 (dart+0x1df8599)
    #7 dart::DRT_OptimizeInvokedFunction(dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2558 (dart+0x1df8599)
    #8 <null> <null> (memfd:dart-codespace (deleted)+0x1107)
    #9 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (dart+0x1bd6832)
    #10 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:680 (dart+0x1bd6832)
    #11 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1093 (dart+0x1c3c82f)
    #12 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (dart+0x1c850d0)
    #13 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:447 (dart+0x1c85b2f)
    #14 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (dart+0x1c86853)
    #15 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #16 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #17 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

  Location is heap block of size 968 at 0x7b6000000400 allocated by main thread:
    #0 operator new(unsigned long) ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_new_delete.cpp:64 (dart+0x19016c7)
    #1 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1380 (dart+0x24ce5d6)
    #2 dart::bin::CreateIsolateGroupAndSetupHelper(bool, char const*, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**, int*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:682 (dart+0x190a291)
    #3 dart::bin::RunMainIsolate(char const*, dart::bin::CommandLineOptions*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:848 (dart+0x1909651)
    #4 dart::bin::main(int, char**) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1205 (dart+0x190ad06)
    #5 main ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1240 (dart+0x190bbd2)

  Thread T10 'DartWorker' (tid=26504, running) created by thread T4 at:
    #0 pthread_create ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:962 (dart+0x189423b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:157 (dart+0x1d616bc)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:338 (dart+0x1e47681)
    #3 dart::ThreadPool::RunImpl(std::__2::unique_ptr<dart::ThreadPool::Task, std::__2::default_delete<dart::ThreadPool::Task> >) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:69 (dart+0x1e47681)
    #4 bool dart::ThreadPool::Run<dart::ConcurrentMarkTask, dart::GCMarker*, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&>(dart::GCMarker*&&, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:43 (dart+0x20fddc4)
    #5 dart::GCMarker::StartConcurrentMark(dart::PageSpace*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/marker.cc:814 (dart+0x20fddc4)
    #6 dart::PageSpace::CollectGarbageAtSafepoint(bool, bool, long, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1124 (dart+0x2106f0a)
    #7 dart::PageSpace::CollectGarbage(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1064 (dart+0x21068d1)
    #8 dart::Heap::StartConcurrentMarking(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:595 (dart+0x20f9266)
    #9 dart::Heap::CheckStartConcurrentMarking(dart::Thread*, dart::Heap::GCReason) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:588 (dart+0x20f7649)
    #10 ~ForceGrowthSafepointOperationScope ../../out/ReleaseTSANX64/../../runtime/vm/heap/safepoint.cc:78 (dart+0x210c822)
    #11 dart::IsolateGroup::RunWithStoppedMutators(std::__2::function<void ()>, std::__2::function<void ()>, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:2526 (dart+0x1c4301e)
    #12 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:658 (dart+0x20d7490)
    #13 dart::CompileFunctionHelper(dart::CompilationPipeline*, dart::Function const&, bool, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:755 (dart+0x20d7f9d)
    #14 dart::Compiler::CompileOptimizedFunction(dart::Thread*, dart::Function const&, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:949 (dart+0x20d88ee)
    #15 dart::DRT_HelperOptimizeInvokedFunction(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2603 (dart+0x1df8599)
    #16 dart::DRT_OptimizeInvokedFunction(dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2558 (dart+0x1df8599)
    #17 <null> <null> (memfd:dart-codespace (deleted)+0x1107)
    #18 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (dart+0x1bd6832)
    #19 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:680 (dart+0x1bd6832)
    #20 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1093 (dart+0x1c3c82f)
    #21 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (dart+0x1c850d0)
    #22 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:447 (dart+0x1c85b2f)
    #23 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (dart+0x1c86853)
    #24 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #25 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #26 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

  Thread T4 'DartWorker' (tid=26323, running) created by thread T2 at:
    #0 pthread_create ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:962 (dart+0x189423b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:157 (dart+0x1d616bc)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:338 (dart+0x1e47681)
    #3 dart::ThreadPool::RunImpl(std::__2::unique_ptr<dart::ThreadPool::Task, std::__2::default_delete<dart::ThreadPool::Task> >) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:69 (dart+0x1e47681)
    #4 bool dart::ThreadPool::Run<dart::ConcurrentMarkTask, dart::GCMarker*, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&>(dart::GCMarker*&&, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:43 (dart+0x20fddc4)
    #5 dart::GCMarker::StartConcurrentMark(dart::PageSpace*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/marker.cc:814 (dart+0x20fddc4)
    #6 dart::PageSpace::CollectGarbageAtSafepoint(bool, bool, long, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1124 (dart+0x2106f0a)
    #7 dart::PageSpace::CollectGarbage(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1064 (dart+0x21068d1)
    #8 dart::Heap::StartConcurrentMarking(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:595 (dart+0x20f9266)
    #9 dart::Heap::CheckStartConcurrentMarking(dart::Thread*, dart::Heap::GCReason) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:588 (dart+0x20f7649)
    #10 dart::PageSpace::EvaluateConcurrentMarking(dart::PageSpace::GrowthPolicy) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:454 (dart+0x2103532)
    #11 dart::PageSpace::TryAllocateInFreshPage(long, dart::HeapPage::PageType, dart::PageSpace::GrowthPolicy, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:466 (dart+0x2103532)
    #12 dart::PageSpace::TryAllocateInternal(long, dart::HeapPage::PageType, dart::PageSpace::GrowthPolicy, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:541 (dart+0x2103b12)
    #13 dart::PageSpace::TryAllocate(long, dart::HeapPage::PageType, dart::PageSpace::GrowthPolicy) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.h:298 (dart+0x20f6d59)
    #14 dart::Heap::AllocateOld(long, dart::HeapPage::PageType) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:109 (dart+0x20f6d59)
    #15 dart::Object::Allocate(long, long, dart::Heap::Space) ??:? (dart+0x1c95f46)
    #16 dart::Object::Allocate(long, long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:2565 (dart+0x1c95f46)
    #17 dart::Array::New(long, long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:22071 (dart+0x1c97b30)
    #18 dart::Array::New(long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:22043 (dart+0x1c97b30)
    #19 KernelLoader ../../out/ReleaseTSANX64/../../runtime/vm/kernel_loader.cc:477 (dart+0x1c73e4b)
    #20 dart::kernel::KernelLoader::FinishLoading(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/kernel_loader.cc:1757 (dart+0x1c7cdc6)
    #21 dart::ClassFinalizer::FinalizeClass(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/class_finalizer.cc:1133 (dart+0x1b616fa)
    #22 dart::ClassFinalizer::FinalizeClass(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/class_finalizer.cc:1152 (dart+0x1b61780)
    #23 dart::ClassFinalizer::LoadClassMembers(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/class_finalizer.cc:1197 (dart+0x1b62dbb)
    #24 dart::Class::EnsureIsFinalized(dart::Thread*) const ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:4124 (dart+0x1cc2b59)
    #25 dart::Class::LookupFunctionAllowPrivate(dart::String const&, dart::Class::MemberKind) const ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:5166 (dart+0x1cc2b59)
    #26 dart::Class::LookupConstructorAllowPrivate(dart::String const&) const ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:5043 (dart+0x1cc2e45)
    #27 dart::kernel::TranslationHelper::LookupConstructorByKernelConstructor(dart::Class const&, dart::kernel::NameIndex) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_translation_helper.cc:651 (dart+0x209d39f)
    #28 dart::kernel::StreamingFlowGraphBuilder::BuildConstructorInvocation(dart::TokenPosition*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:3415 (dart+0x20730d1)
    #29 dart::kernel::StreamingFlowGraphBuilder::BuildExpression(dart::TokenPosition*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1304 (dart+0x2067161)
    #30 dart::kernel::StreamingFlowGraphBuilder::BuildReturnStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4657 (dart+0x20792a7)
    #31 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1426 (dart+0x206a1cd)
    #32 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #33 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #34 dart::kernel::StreamingFlowGraphBuilder::BuildIfStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4627 (dart+0x2079072)
    #35 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1424 (dart+0x206a199)
    #36 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #37 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #38 dart::kernel::StreamingFlowGraphBuilder::BuildIfStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4627 (dart+0x2079072)
    #39 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1424 (dart+0x206a199)
    #40 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #41 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #42 dart::kernel::StreamingFlowGraphBuilder::BuildIfStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4627 (dart+0x2079072)
    #43 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1424 (dart+0x206a199)
    #44 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #45 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #46 dart::kernel::StreamingFlowGraphBuilder::BuildFunctionBody(dart::Function const&, dart::LocalVariable*, bool) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:840 (dart+0x206cbcc)
    #47 dart::kernel::StreamingFlowGraphBuilder::BuildGraphOfFunction(bool) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:991 (dart+0x206d6e4)
    #48 dart::kernel::StreamingFlowGraphBuilder::BuildGraph() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1147 (dart+0x206df1a)
    #49 dart::kernel::FlowGraphBuilder::BuildGraph() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_to_il.cc:806 (dart+0x208b81d)
    #50 dart::DartCompilationPipeline::BuildFlowGraph(dart::Zone*, dart::ParsedFunction*, dart::ZoneGrowableArray<dart::ICData const*>*, long, bool) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:139 (dart+0x20d4fe1)
    #51 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:573 (dart+0x20d6c7f)
    #52 dart::CompileFunctionHelper(dart::CompilationPipeline*, dart::Function const&, bool, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:755 (dart+0x20d7f9d)
    #53 dart::Compiler::CompileFunction(dart::Thread*, dart::Function const&) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:894 (dart+0x20d79a5)
    #54 dart::DRT_HelperCompileFunction(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:232 (dart+0x20d56ec)
    #55 dart::DRT_CompileFunction(dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:208 (dart+0x20d56ec)
    #56 <null> <null> (memfd:dart-codespace (deleted)+0x1107)
    #57 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (dart+0x1bd319e)
    #58 dart::RunServiceTask::RunMain(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/service_isolate.cc:461 (dart+0x1e1ac4a)
    #59 dart::RunServiceTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/service_isolate.cc:374 (dart+0x1e1a96b)
    #60 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #61 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #62 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

SUMMARY: ThreadSanitizer: data race ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:95 in dart::IntrusiveDListEntry<dart::Isolate, 1>::Prepend(dart::IntrusiveDListEntry<dart::Isolate, 1>*)
==================
==================
WARNING: ThreadSanitizer: data race (pid=26317)
  Read of size 8 at 0x7b6000000430 by thread T4:
    #0 dart::IntrusiveDListEntry<dart::Isolate, 1>::Prev() ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:122 (dart+0x1c42f2a)
    #1 dart::IntrusiveDList<dart::Isolate, 1>::Last() ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:196 (dart+0x1c42f2a)
    #2 dart::IsolateGroup::RunWithStoppedMutators(std::__2::function<void ()>, std::__2::function<void ()>, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:2513 (dart+0x1c42f2a)
    #3 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:658 (dart+0x20d7490)
    #4 dart::CompileFunctionHelper(dart::CompilationPipeline*, dart::Function const&, bool, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:755 (dart+0x20d7f9d)
    #5 dart::Compiler::CompileOptimizedFunction(dart::Thread*, dart::Function const&, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:949 (dart+0x20d88ee)
    #6 dart::DRT_HelperOptimizeInvokedFunction(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2603 (dart+0x1df8599)
    #7 dart::DRT_OptimizeInvokedFunction(dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2558 (dart+0x1df8599)
    #8 <null> <null> (memfd:dart-codespace (deleted)+0x1107)
    #9 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (dart+0x1bd6832)
    #10 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:680 (dart+0x1bd6832)
    #11 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1093 (dart+0x1c3c82f)
    #12 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (dart+0x1c850d0)
    #13 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:447 (dart+0x1c85b2f)
    #14 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (dart+0x1c86853)
    #15 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #16 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #17 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

  Previous write of size 8 at 0x7b6000000430 by thread T10:
    #0 dart::IntrusiveDListEntry<dart::Isolate, 1>::Prepend(dart::IntrusiveDListEntry<dart::Isolate, 1>*) ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:95 (dart+0x1c36dae)
    #1 dart::IntrusiveDList<dart::Isolate, 1>::Append(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:177 (dart+0x1c36dae)
    #2 dart::IsolateGroup::RegisterIsolateLocked(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:260 (dart+0x1c36dae)
    #3 operator() ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1321 (dart+0x2507b63)
    #4 _ZNSt3__28__invokeIRZN4dart32CreateWithinExistingIsolateGroupEPNS1_12IsolateGroupEPKcPPcE3$_0JEEEDTclclsr3std3__2E7forwardIT_Efp_Espclsr3std3__2E7forwardIT0_Efp0_EEEOSA_DpOSB_ ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/type_traits:3519 (dart+0x2507b63)
    #5 void std::__2::__invoke_void_return_wrapper<void>::__call<dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0&>(dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0&) ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/__functional_base:348 (dart+0x2507b63)
    #6 std::__2::__function::__default_alloc_func<dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0, void ()>::operator()() ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:1590 (dart+0x2507b63)
    #7 void std::__2::__function::__policy_invoker<void ()>::__call_impl<std::__2::__function::__default_alloc_func<dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**)::$_0, void ()> >(std::__2::__function::__policy_storage const*) ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:2071 (dart+0x2507b63)
    #8 std::__2::__function::__policy_func<void ()>::operator()() const ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:2203 (dart+0x1c370f3)
    #9 std::__2::function<void ()>::operator()() const ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/functional:2473 (dart+0x1c370f3)
    #10 dart::IsolateGroup::RunWithLockedGroup(std::__2::function<void ()>) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:271 (dart+0x1c370f3)
    #11 dart::CreateWithinExistingIsolateGroup(dart::IsolateGroup*, char const*, char**) ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1297 (dart+0x24cda6f)
    #12 dart::SpawnIsolateTask::Run() ../../out/ReleaseTSANX64/../../runtime/lib/isolate.cc:170 (dart+0x1b31434)
    #13 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #14 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #15 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

  Location is heap block of size 968 at 0x7b6000000400 allocated by main thread:
    #0 operator new(unsigned long) ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_new_delete.cpp:64 (dart+0x19016c7)
    #1 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1380 (dart+0x24ce5d6)
    #2 dart::bin::CreateIsolateGroupAndSetupHelper(bool, char const*, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**, int*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:682 (dart+0x190a291)
    #3 dart::bin::RunMainIsolate(char const*, dart::bin::CommandLineOptions*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:848 (dart+0x1909651)
    #4 dart::bin::main(int, char**) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1205 (dart+0x190ad06)
    #5 main ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1240 (dart+0x190bbd2)

  Thread T4 'DartWorker' (tid=26323, running) created by thread T2 at:
    #0 pthread_create ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:962 (dart+0x189423b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:157 (dart+0x1d616bc)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:338 (dart+0x1e47681)
    #3 dart::ThreadPool::RunImpl(std::__2::unique_ptr<dart::ThreadPool::Task, std::__2::default_delete<dart::ThreadPool::Task> >) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:69 (dart+0x1e47681)
    #4 bool dart::ThreadPool::Run<dart::ConcurrentMarkTask, dart::GCMarker*, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&>(dart::GCMarker*&&, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:43 (dart+0x20fddc4)
    #5 dart::GCMarker::StartConcurrentMark(dart::PageSpace*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/marker.cc:814 (dart+0x20fddc4)
    #6 dart::PageSpace::CollectGarbageAtSafepoint(bool, bool, long, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1124 (dart+0x2106f0a)
    #7 dart::PageSpace::CollectGarbage(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1064 (dart+0x21068d1)
    #8 dart::Heap::StartConcurrentMarking(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:595 (dart+0x20f9266)
    #9 dart::Heap::CheckStartConcurrentMarking(dart::Thread*, dart::Heap::GCReason) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:588 (dart+0x20f7649)
    #10 dart::PageSpace::EvaluateConcurrentMarking(dart::PageSpace::GrowthPolicy) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:454 (dart+0x2103532)
    #11 dart::PageSpace::TryAllocateInFreshPage(long, dart::HeapPage::PageType, dart::PageSpace::GrowthPolicy, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:466 (dart+0x2103532)
    #12 dart::PageSpace::TryAllocateInternal(long, dart::HeapPage::PageType, dart::PageSpace::GrowthPolicy, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:541 (dart+0x2103b12)
    #13 dart::PageSpace::TryAllocate(long, dart::HeapPage::PageType, dart::PageSpace::GrowthPolicy) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.h:298 (dart+0x20f6d59)
    #14 dart::Heap::AllocateOld(long, dart::HeapPage::PageType) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:109 (dart+0x20f6d59)
    #15 dart::Object::Allocate(long, long, dart::Heap::Space) ??:? (dart+0x1c95f46)
    #16 dart::Object::Allocate(long, long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:2565 (dart+0x1c95f46)
    #17 dart::Array::New(long, long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:22071 (dart+0x1c97b30)
    #18 dart::Array::New(long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:22043 (dart+0x1c97b30)
    #19 KernelLoader ../../out/ReleaseTSANX64/../../runtime/vm/kernel_loader.cc:477 (dart+0x1c73e4b)
    #20 dart::kernel::KernelLoader::FinishLoading(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/kernel_loader.cc:1757 (dart+0x1c7cdc6)
    #21 dart::ClassFinalizer::FinalizeClass(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/class_finalizer.cc:1133 (dart+0x1b616fa)
    #22 dart::ClassFinalizer::FinalizeClass(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/class_finalizer.cc:1152 (dart+0x1b61780)
    #23 dart::ClassFinalizer::LoadClassMembers(dart::Class const&) ../../out/ReleaseTSANX64/../../runtime/vm/class_finalizer.cc:1197 (dart+0x1b62dbb)
    #24 dart::Class::EnsureIsFinalized(dart::Thread*) const ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:4124 (dart+0x1cc2b59)
    #25 dart::Class::LookupFunctionAllowPrivate(dart::String const&, dart::Class::MemberKind) const ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:5166 (dart+0x1cc2b59)
    #26 dart::Class::LookupConstructorAllowPrivate(dart::String const&) const ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:5043 (dart+0x1cc2e45)
    #27 dart::kernel::TranslationHelper::LookupConstructorByKernelConstructor(dart::Class const&, dart::kernel::NameIndex) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_translation_helper.cc:651 (dart+0x209d39f)
    #28 dart::kernel::StreamingFlowGraphBuilder::BuildConstructorInvocation(dart::TokenPosition*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:3415 (dart+0x20730d1)
    #29 dart::kernel::StreamingFlowGraphBuilder::BuildExpression(dart::TokenPosition*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1304 (dart+0x2067161)
    #30 dart::kernel::StreamingFlowGraphBuilder::BuildReturnStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4657 (dart+0x20792a7)
    #31 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1426 (dart+0x206a1cd)
    #32 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #33 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #34 dart::kernel::StreamingFlowGraphBuilder::BuildIfStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4627 (dart+0x2079072)
    #35 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1424 (dart+0x206a199)
    #36 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #37 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #38 dart::kernel::StreamingFlowGraphBuilder::BuildIfStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4627 (dart+0x2079072)
    #39 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1424 (dart+0x206a199)
    #40 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #41 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #42 dart::kernel::StreamingFlowGraphBuilder::BuildIfStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4627 (dart+0x2079072)
    #43 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1424 (dart+0x206a199)
    #44 dart::kernel::StreamingFlowGraphBuilder::BuildBlock() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:4067 (dart+0x2076257)
    #45 dart::kernel::StreamingFlowGraphBuilder::BuildStatement() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1398 (dart+0x206a1a6)
    #46 dart::kernel::StreamingFlowGraphBuilder::BuildFunctionBody(dart::Function const&, dart::LocalVariable*, bool) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:840 (dart+0x206cbcc)
    #47 dart::kernel::StreamingFlowGraphBuilder::BuildGraphOfFunction(bool) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:991 (dart+0x206d6e4)
    #48 dart::kernel::StreamingFlowGraphBuilder::BuildGraph() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_binary_flowgraph.cc:1147 (dart+0x206df1a)
    #49 dart::kernel::FlowGraphBuilder::BuildGraph() ../../out/ReleaseTSANX64/../../runtime/vm/compiler/frontend/kernel_to_il.cc:806 (dart+0x208b81d)
    #50 dart::DartCompilationPipeline::BuildFlowGraph(dart::Zone*, dart::ParsedFunction*, dart::ZoneGrowableArray<dart::ICData const*>*, long, bool) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:139 (dart+0x20d4fe1)
    #51 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:573 (dart+0x20d6c7f)
    #52 dart::CompileFunctionHelper(dart::CompilationPipeline*, dart::Function const&, bool, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:755 (dart+0x20d7f9d)
    #53 dart::Compiler::CompileFunction(dart::Thread*, dart::Function const&) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:894 (dart+0x20d79a5)
    #54 dart::DRT_HelperCompileFunction(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:232 (dart+0x20d56ec)
    #55 dart::DRT_CompileFunction(dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:208 (dart+0x20d56ec)
    #56 <null> <null> (memfd:dart-codespace (deleted)+0x1107)
    #57 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (dart+0x1bd319e)
    #58 dart::RunServiceTask::RunMain(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/service_isolate.cc:461 (dart+0x1e1ac4a)
    #59 dart::RunServiceTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/service_isolate.cc:374 (dart+0x1e1a96b)
    #60 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #61 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #62 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

  Thread T10 'DartWorker' (tid=26504, running) created by thread T4 at:
    #0 pthread_create ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:962 (dart+0x189423b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:157 (dart+0x1d616bc)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:338 (dart+0x1e47681)
    #3 dart::ThreadPool::RunImpl(std::__2::unique_ptr<dart::ThreadPool::Task, std::__2::default_delete<dart::ThreadPool::Task> >) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:69 (dart+0x1e47681)
    #4 bool dart::ThreadPool::Run<dart::ConcurrentMarkTask, dart::GCMarker*, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&>(dart::GCMarker*&&, dart::IsolateGroup* const&, dart::PageSpace*&, dart::MarkingVisitorBase<true>*&) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:43 (dart+0x20fddc4)
    #5 dart::GCMarker::StartConcurrentMark(dart::PageSpace*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/marker.cc:814 (dart+0x20fddc4)
    #6 dart::PageSpace::CollectGarbageAtSafepoint(bool, bool, long, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1124 (dart+0x2106f0a)
    #7 dart::PageSpace::CollectGarbage(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1064 (dart+0x21068d1)
    #8 dart::Heap::StartConcurrentMarking(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:595 (dart+0x20f9266)
    #9 dart::Heap::CheckStartConcurrentMarking(dart::Thread*, dart::Heap::GCReason) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:588 (dart+0x20f7649)
    #10 ~ForceGrowthSafepointOperationScope ../../out/ReleaseTSANX64/../../runtime/vm/heap/safepoint.cc:78 (dart+0x210c822)
    #11 dart::IsolateGroup::RunWithStoppedMutators(std::__2::function<void ()>, std::__2::function<void ()>, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:2526 (dart+0x1c4301e)
    #12 dart::CompileParsedFunctionHelper::Compile(dart::CompilationPipeline*) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:658 (dart+0x20d7490)
    #13 dart::CompileFunctionHelper(dart::CompilationPipeline*, dart::Function const&, bool, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:755 (dart+0x20d7f9d)
    #14 dart::Compiler::CompileOptimizedFunction(dart::Thread*, dart::Function const&, long) ../../out/ReleaseTSANX64/../../runtime/vm/compiler/jit/compiler.cc:949 (dart+0x20d88ee)
    #15 dart::DRT_HelperOptimizeInvokedFunction(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2603 (dart+0x1df8599)
    #16 dart::DRT_OptimizeInvokedFunction(dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:2558 (dart+0x1df8599)
    #17 <null> <null> (memfd:dart-codespace (deleted)+0x1107)
    #18 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (dart+0x1bd6832)
    #19 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:680 (dart+0x1bd6832)
    #20 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1093 (dart+0x1c3c82f)
    #21 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (dart+0x1c850d0)
    #22 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:447 (dart+0x1c85b2f)
    #23 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (dart+0x1c86853)
    #24 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (dart+0x1e4856b)
    #25 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (dart+0x1e482f9)
    #26 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (dart+0x1d617ed)

SUMMARY: ThreadSanitizer: data race ../../out/ReleaseTSANX64/../../runtime/vm/intrusive_dlist.h:122 in dart::IntrusiveDListEntry<dart::Isolate, 1>::Prev()
==================
ThreadSanitizer: reported 2 warnings

--- Re-run this test:
python tools/test.py -n dartk-tsan-linux-release-x64 vm/dart/transferable_test/0

/===================================================================\
| vm/cc/Profiler_FunctionInline failed again (Crash, expected Pass) |
\===================================================================/

--- Command "run_vm_unittest" (took 23.000038s):
DART_CONFIGURATION=ReleaseTSANX64 out/ReleaseTSANX64/run_vm_tests --dfe=/b/s/w/ir/cache/builder/sdk/out/ReleaseTSANX64/gen/kernel-service.dart.snapshot --ignore-unrecognized-flags Profiler_FunctionInline

exit code:
-6

stdout:
Running test: Profiler_FunctionInline
Done: Profiler_FunctionInline

stderr:
==================
WARNING: ThreadSanitizer: data race (pid=31861)
  Read of size 8 at 0x7f7911a7b898 by main thread:
    #0 dart::Sample::ignore_sample() const ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:284 (run_vm_tests+0x3f5fd95)
    #1 dart::SampleBuffer::BuildProcessedSampleBuffer(dart::SampleFilter*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.cc:1559 (run_vm_tests+0x3f5fd95)
    #2 dart::ProfileBuilder::FilterSamples() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_service.cc:1042 (run_vm_tests+0x3f65da7)
    #3 dart::ProfileBuilder::Build() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_service.cc:1005 (run_vm_tests+0x3f65da7)
    #4 dart::Profile::Build(dart::Thread*, dart::SampleFilter*, dart::SampleBuffer*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_service.cc:1540 (run_vm_tests+0x3f65868)
    #5 dart::Dart_TestHelperProfiler_FunctionInline(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1458 (run_vm_tests+0x39cabfe)
    #6 dart::Dart_TestProfiler_FunctionInline() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1407 (run_vm_tests+0x39cabfe)
    #7 dart::TestCase::Run() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:51 (run_vm_tests+0x389a86c)
    #8 dart::TestCaseBase::RunTest() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:63 (run_vm_tests+0x389aa41)
    #9 dart::TestCaseBase::RunAll() ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:86 (run_vm_tests+0x3a22888)
    #10 dart::Main(int, char const**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:392 (run_vm_tests+0x389b51e)
    #11 main ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:421 (run_vm_tests+0x389adae)

  Previous write of size 8 at 0x7f7911a7b898 by thread T5 (mutexes: write M153):
    #0 memset ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/../sanitizer_common/sanitizer_common_interceptors.inc:784 (run_vm_tests+0x3834009)
    #1 dart::Sample::Clear() ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:211 (run_vm_tests+0x3f5edda)
    #2 dart::Sample::Init(long, long, unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:191 (run_vm_tests+0x3f5edda)
    #3 dart::SetupSample(dart::Thread*, dart::SampleBuffer*, unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.cc:1042 (run_vm_tests+0x3f5edda)
    #4 dart::Profiler::SampleThread(dart::Thread*, dart::InterruptedThreadState const&) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.cc:1411 (run_vm_tests+0x3f5edda)
    #5 dart::ThreadInterrupterLinux::ThreadInterruptSignalHandler(int, siginfo_t*, void*) ../../out/ReleaseTSANX64/../../runtime/vm/thread_interrupter_linux.cc:43 (run_vm_tests+0x403c8ad)
    #6 __tsan::CallUserSignalHandler(__tsan::ThreadState*, bool, bool, bool, int, __sanitizer::__sanitizer_siginfo*, void*) ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1907 (run_vm_tests+0x3830edf)
    #7 dart::Monitor::Enter() ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:410 (run_vm_tests+0x3f5742f)
    #8 MonitorLocker ../../out/ReleaseTSANX64/../../runtime/vm/lockers.h:142 (run_vm_tests+0x4037bf8)
    #9 dart::Thread::SetStackLimit(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread.cc:415 (run_vm_tests+0x4037bf8)
    #10 ~ScopedIsolateStackLimits ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:66 (run_vm_tests+0x3dbf25c)
    #11 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:184 (run_vm_tests+0x3dbf25c)
    #12 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (run_vm_tests+0x3dc22e2)
    #13 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:680 (run_vm_tests+0x3dc22e2)
    #14 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1093 (run_vm_tests+0x3e3430f)
    #15 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (run_vm_tests+0x3e7a460)
    #16 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:447 (run_vm_tests+0x3e7aebf)
    #17 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (run_vm_tests+0x3e7bb63)
    #18 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (run_vm_tests+0x403dd7b)
    #19 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (run_vm_tests+0x403db09)
    #20 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (run_vm_tests+0x3f56b9d)

  Location is global '<null>' at 0x000000000000 (memfd:dart-profiler (deleted)+0x000000603898)

  Mutex M153 (0x7b7800010d98) created at:
    #0 pthread_mutex_init ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1220 (run_vm_tests+0x382bbbd)
    #1 Monitor ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:356 (run_vm_tests+0x3f571b6)
    #2 Thread ../../out/ReleaseTSANX64/../../runtime/vm/thread.cc:88 (run_vm_tests+0x4033b0e)
    #3 dart::ThreadRegistry::GetFromFreelistLocked(bool) ../../out/ReleaseTSANX64/../../runtime/vm/thread_registry.cc:168 (run_vm_tests+0x403dff8)
    #4 dart::ThreadRegistry::GetFreeThreadLocked(bool) ../../out/ReleaseTSANX64/../../runtime/vm/thread_registry.cc:30 (run_vm_tests+0x403dff8)
    #5 dart::IsolateGroup::ScheduleThreadLocked(dart::MonitorLocker*, dart::Thread*, bool, bool, bool) ??:? (run_vm_tests+0x3e2f6bd)
    #6 dart::Isolate::ScheduleThread(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:3391 (run_vm_tests+0x3e3dd93)
    #7 dart::Thread::EnterIsolate(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/thread.cc:313 (run_vm_tests+0x4036f08)
    #8 dart::Isolate::InitIsolate(char const*, dart::IsolateGroup*, Dart_IsolateFlags const&, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1503 (run_vm_tests+0x3e36e2f)
    #9 dart::Dart::CreateIsolate(char const*, Dart_IsolateFlags const&, dart::IsolateGroup*) ../../out/ReleaseTSANX64/../../runtime/vm/dart.cc:644 (run_vm_tests+0x3db420b)
    #10 dart::CreateIsolate(dart::IsolateGroup*, bool, char const*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1124 (run_vm_tests+0x4704a88)
    #11 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1384 (run_vm_tests+0x47054db)
    #12 dart::CreateIsolateAndSetup(char const*, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:205 (run_vm_tests+0x389bbe6)
    #13 dart::RunKernelTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:98 (run_vm_tests+0x3e66a96)
    #14 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (run_vm_tests+0x403dd7b)
    #15 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (run_vm_tests+0x403db09)
    #16 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (run_vm_tests+0x3f56b9d)

  Thread T5 'DartWorker' (tid=31867, running) created by main thread at:
    #0 pthread_create ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:962 (run_vm_tests+0x382a63b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:157 (run_vm_tests+0x3f56a6c)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:338 (run_vm_tests+0x403ce91)
    #3 dart::ThreadPool::RunImpl(std::__2::unique_ptr<dart::ThreadPool::Task, std::__2::default_delete<dart::ThreadPool::Task> >) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:69 (run_vm_tests+0x403ce91)
    #4 bool dart::ThreadPool::Run<dart::MessageHandlerTask, dart::MessageHandler*>(dart::MessageHandler*&&) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:43 (run_vm_tests+0x3e79f65)
    #5 dart::MessageHandler::Run(dart::ThreadPool*, dart::MessageHandler::MessageStatus (*)(unsigned long), void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:121 (run_vm_tests+0x3e79f65)
    #6 Dart_NewNativePort ../../out/ReleaseTSANX64/../../runtime/vm/native_api_impl.cc:89 (run_vm_tests+0x47405a0)
    #7 KernelCompilationRequest ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:424 (run_vm_tests+0x3e64355)
    #8 dart::KernelIsolate::CompileToKernel(char const*, unsigned char const*, long, int, Dart_SourceFile*, bool, char const*, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:989 (run_vm_tests+0x3e64355)
    #9 Dart_CompileSourcesToKernel ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:5979 (run_vm_tests+0x473b392)
    #10 dart::TestCase::CompileTestScriptWithDFE(char const*, int, Dart_SourceFile*, unsigned char const**, long*, bool, bool, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:302 (run_vm_tests+0x3a23904)
    #11 dart::TestCase::LoadTestScriptWithDFE(int, Dart_SourceFile*, void (*(*)(_Dart_Handle*, int, bool*))(_Dart_NativeArguments*), bool, bool, bool, char const*, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:448 (run_vm_tests+0x3a23f19)
    #12 dart::TestCase::LoadTestScript(char const*, void (*(*)(_Dart_Handle*, int, bool*))(_Dart_NativeArguments*), char const*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:396 (run_vm_tests+0x3a23ddb)
    #13 dart::LoadTestScript(char const*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:162 (run_vm_tests+0x39dbe49)
    #14 dart::Dart_TestHelperProfiler_FunctionInline(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1440 (run_vm_tests+0x39caa6a)
    #15 dart::Dart_TestProfiler_FunctionInline() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1407 (run_vm_tests+0x39caa6a)
    #16 dart::TestCase::Run() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:51 (run_vm_tests+0x389a86c)
    #17 dart::TestCaseBase::RunTest() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:63 (run_vm_tests+0x389aa41)
    #18 dart::TestCaseBase::RunAll() ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:86 (run_vm_tests+0x3a22888)
    #19 dart::Main(int, char const**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:392 (run_vm_tests+0x389b51e)
    #20 main ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:421 (run_vm_tests+0x389adae)

SUMMARY: ThreadSanitizer: data race ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:284 in dart::Sample::ignore_sample() const
==================
==================
WARNING: ThreadSanitizer: data race (pid=31861)
  Read of size 8 at 0x7f7911a7b858 by main thread:
    #0 dart::Sample::port() const ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:197 (run_vm_tests+0x3f5fdb1)
    #1 dart::SampleBuffer::BuildProcessedSampleBuffer(dart::SampleFilter*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.cc:1569 (run_vm_tests+0x3f5fdb1)
    #2 dart::ProfileBuilder::FilterSamples() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_service.cc:1042 (run_vm_tests+0x3f65da7)
    #3 dart::ProfileBuilder::Build() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_service.cc:1005 (run_vm_tests+0x3f65da7)
    #4 dart::Profile::Build(dart::Thread*, dart::SampleFilter*, dart::SampleBuffer*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_service.cc:1540 (run_vm_tests+0x3f65868)
    #5 dart::Dart_TestHelperProfiler_FunctionInline(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1458 (run_vm_tests+0x39cabfe)
    #6 dart::Dart_TestProfiler_FunctionInline() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1407 (run_vm_tests+0x39cabfe)
    #7 dart::TestCase::Run() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:51 (run_vm_tests+0x389a86c)
    #8 dart::TestCaseBase::RunTest() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:63 (run_vm_tests+0x389aa41)
    #9 dart::TestCaseBase::RunAll() ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:86 (run_vm_tests+0x3a22888)
    #10 dart::Main(int, char const**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:392 (run_vm_tests+0x389b51e)
    #11 main ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:421 (run_vm_tests+0x389adae)

  Previous write of size 8 at 0x7f7911a7b858 by thread T5 (mutexes: write M153):
    #0 memset ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/../sanitizer_common/sanitizer_common_interceptors.inc:784 (run_vm_tests+0x3834009)
    #1 dart::Sample::Clear() ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:204 (run_vm_tests+0x3f5eda7)
    #2 dart::Sample::Init(long, long, unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:191 (run_vm_tests+0x3f5eda7)
    #3 dart::SetupSample(dart::Thread*, dart::SampleBuffer*, unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.cc:1042 (run_vm_tests+0x3f5eda7)
    #4 dart::Profiler::SampleThread(dart::Thread*, dart::InterruptedThreadState const&) ../../out/ReleaseTSANX64/../../runtime/vm/profiler.cc:1411 (run_vm_tests+0x3f5eda7)
    #5 dart::ThreadInterrupterLinux::ThreadInterruptSignalHandler(int, siginfo_t*, void*) ../../out/ReleaseTSANX64/../../runtime/vm/thread_interrupter_linux.cc:43 (run_vm_tests+0x403c8ad)
    #6 __tsan::CallUserSignalHandler(__tsan::ThreadState*, bool, bool, bool, int, __sanitizer::__sanitizer_siginfo*, void*) ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1907 (run_vm_tests+0x3830edf)
    #7 dart::Monitor::Enter() ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:410 (run_vm_tests+0x3f5742f)
    #8 MonitorLocker ../../out/ReleaseTSANX64/../../runtime/vm/lockers.h:142 (run_vm_tests+0x4037bf8)
    #9 dart::Thread::SetStackLimit(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread.cc:415 (run_vm_tests+0x4037bf8)
    #10 ~ScopedIsolateStackLimits ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:66 (run_vm_tests+0x3dbf25c)
    #11 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:184 (run_vm_tests+0x3dbf25c)
    #12 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:36 (run_vm_tests+0x3dc22e2)
    #13 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:680 (run_vm_tests+0x3dc22e2)
    #14 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1093 (run_vm_tests+0x3e3430f)
    #15 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (run_vm_tests+0x3e7a460)
    #16 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:447 (run_vm_tests+0x3e7aebf)
    #17 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (run_vm_tests+0x3e7bb63)
    #18 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (run_vm_tests+0x403dd7b)
    #19 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (run_vm_tests+0x403db09)
    #20 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (run_vm_tests+0x3f56b9d)

  Location is global '<null>' at 0x000000000000 (memfd:dart-profiler (deleted)+0x000000603858)

  Mutex M153 (0x7b7800010d98) created at:
    #0 pthread_mutex_init ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1220 (run_vm_tests+0x382bbbd)
    #1 Monitor ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:356 (run_vm_tests+0x3f571b6)
    #2 Thread ../../out/ReleaseTSANX64/../../runtime/vm/thread.cc:88 (run_vm_tests+0x4033b0e)
    #3 dart::ThreadRegistry::GetFromFreelistLocked(bool) ../../out/ReleaseTSANX64/../../runtime/vm/thread_registry.cc:168 (run_vm_tests+0x403dff8)
    #4 dart::ThreadRegistry::GetFreeThreadLocked(bool) ../../out/ReleaseTSANX64/../../runtime/vm/thread_registry.cc:30 (run_vm_tests+0x403dff8)
    #5 dart::IsolateGroup::ScheduleThreadLocked(dart::MonitorLocker*, dart::Thread*, bool, bool, bool) ??:? (run_vm_tests+0x3e2f6bd)
    #6 dart::Isolate::ScheduleThread(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:3391 (run_vm_tests+0x3e3dd93)
    #7 dart::Thread::EnterIsolate(dart::Isolate*) ../../out/ReleaseTSANX64/../../runtime/vm/thread.cc:313 (run_vm_tests+0x4036f08)
    #8 dart::Isolate::InitIsolate(char const*, dart::IsolateGroup*, Dart_IsolateFlags const&, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1503 (run_vm_tests+0x3e36e2f)
    #9 dart::Dart::CreateIsolate(char const*, Dart_IsolateFlags const&, dart::IsolateGroup*) ../../out/ReleaseTSANX64/../../runtime/vm/dart.cc:644 (run_vm_tests+0x3db420b)
    #10 dart::CreateIsolate(dart::IsolateGroup*, bool, char const*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1124 (run_vm_tests+0x4704a88)
    #11 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1384 (run_vm_tests+0x47054db)
    #12 dart::CreateIsolateAndSetup(char const*, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:205 (run_vm_tests+0x389bbe6)
    #13 dart::RunKernelTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:98 (run_vm_tests+0x3e66a96)
    #14 dart::ThreadPool::Worker::Loop() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:382 (run_vm_tests+0x403dd7b)
    #15 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:434 (run_vm_tests+0x403db09)
    #16 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:138 (run_vm_tests+0x3f56b9d)

  Thread T5 'DartWorker' (tid=31867, running) created by main thread at:
    #0 pthread_create ../recipe_cleanup/clangM8jMG1/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:962 (run_vm_tests+0x382a63b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:157 (run_vm_tests+0x3f56a6c)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:338 (run_vm_tests+0x403ce91)
    #3 dart::ThreadPool::RunImpl(std::__2::unique_ptr<dart::ThreadPool::Task, std::__2::default_delete<dart::ThreadPool::Task> >) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:69 (run_vm_tests+0x403ce91)
    #4 bool dart::ThreadPool::Run<dart::MessageHandlerTask, dart::MessageHandler*>(dart::MessageHandler*&&) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:43 (run_vm_tests+0x3e79f65)
    #5 dart::MessageHandler::Run(dart::ThreadPool*, dart::MessageHandler::MessageStatus (*)(unsigned long), void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:121 (run_vm_tests+0x3e79f65)
    #6 Dart_NewNativePort ../../out/ReleaseTSANX64/../../runtime/vm/native_api_impl.cc:89 (run_vm_tests+0x47405a0)
    #7 KernelCompilationRequest ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:424 (run_vm_tests+0x3e64355)
    #8 dart::KernelIsolate::CompileToKernel(char const*, unsigned char const*, long, int, Dart_SourceFile*, bool, char const*, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:989 (run_vm_tests+0x3e64355)
    #9 Dart_CompileSourcesToKernel ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:5979 (run_vm_tests+0x473b392)
    #10 dart::TestCase::CompileTestScriptWithDFE(char const*, int, Dart_SourceFile*, unsigned char const**, long*, bool, bool, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:302 (run_vm_tests+0x3a23904)
    #11 dart::TestCase::LoadTestScriptWithDFE(int, Dart_SourceFile*, void (*(*)(_Dart_Handle*, int, bool*))(_Dart_NativeArguments*), bool, bool, bool, char const*, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:448 (run_vm_tests+0x3a23f19)
    #12 dart::TestCase::LoadTestScript(char const*, void (*(*)(_Dart_Handle*, int, bool*))(_Dart_NativeArguments*), char const*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:396 (run_vm_tests+0x3a23ddb)
    #13 dart::LoadTestScript(char const*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:162 (run_vm_tests+0x39dbe49)
    #14 dart::Dart_TestHelperProfiler_FunctionInline(dart::Thread*) ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1440 (run_vm_tests+0x39caa6a)
    #15 dart::Dart_TestProfiler_FunctionInline() ../../out/ReleaseTSANX64/../../runtime/vm/profiler_test.cc:1407 (run_vm_tests+0x39caa6a)
    #16 dart::TestCase::Run() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:51 (run_vm_tests+0x389a86c)
    #17 dart::TestCaseBase::RunTest() ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:63 (run_vm_tests+0x389aa41)
    #18 dart::TestCaseBase::RunAll() ../../out/ReleaseTSANX64/../../runtime/vm/unit_test.cc:86 (run_vm_tests+0x3a22888)
    #19 dart::Main(int, char const**) ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:392 (run_vm_tests+0x389b51e)
    #20 main ../../out/ReleaseTSANX64/../../runtime/bin/run_vm_tests.cc:421 (run_vm_tests+0x389adae)

SUMMARY: ThreadSanitizer: data race ../../out/ReleaseTSANX64/../../runtime/vm/profiler.h:197 in dart::Sample::port() const
==================
ThreadSanitizer: reported 2 warnings

--- Re-run this test:
python tools/test.py -n dartk-tsan-linux-release-x64 vm/cc/Profiler_FunctionInline