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tsan-reported data race for Object tags_ between scavenger reading and allocator writing #45217

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aam opened this issue Mar 5, 2021 · 0 comments
Closed

tsan-reported data race for Object tags_ between scavenger reading and allocator writing #45217

aam opened this issue Mar 5, 2021 · 0 comments
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area-vm Use area-vm for VM related issues, including code coverage, FFI, and the AOT and JIT backends.

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@aam
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aam commented Mar 5, 2021 

$ out/ReleaseTSANX64/dart runtime/tests/vm/dart_2/isolates/reload_many_isolates_test.dart
...
==================
WARNING: ThreadSanitizer: data race (pid=3395038)
  Atomic read of size 8 at 0x7f44ca500040 by thread T2 (mutexes: write M305):
    #0 __tsan_atomic64_load ../recipe_cleanup/clangshYTOG/llvm_build_dir/tools/clang/stage2-bins/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/lib/tsan/rtl/tsan_interface_atomic.cpp:539 (dart+0x1b932dc)
    #1 unsigned long std::__2::__cxx_atomic_load<unsigned long>(std::__2::__cxx_atomic_base_impl<unsigned long> const*, std::__2::memory_order) ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/atomic:977 (dart+0x2126b9c)
    #2 std::__2::__atomic_base<unsigned long, false>::load(std::__2::memory_order) const ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/atomic:1578 (dart+0x2126b9c)
    #3 dart::UntaggedObject::ClassIdTag::Type dart::UntaggedObject::Tags<unsigned long>::Read<dart::UntaggedObject::ClassIdTag>() const ../../out/ReleaseTSANX64/../../runtime/vm/raw_object.h:237 (dart+0x2126b9c)
    #4 dart::UntaggedObject::GetClassId() const ../../out/ReleaseTSANX64/../../runtime/vm/raw_object.h:371 (dart+0x2126b9c)
    #5 dart::ObjectPtr::GetClassId() const ../../out/ReleaseTSANX64/../../runtime/vm/raw_object.h:742 (dart+0x2126b9c)
    #6 dart::ScavengerVisitorBase<true>::VisitTypedDataViewPointers(dart::TypedDataViewPtr, dart::ObjectPtr*, dart::ObjectPtr*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:150 (dart+0x2126b9c)
    #7 dart::UntaggedObject::VisitPointersPredefined(dart::ObjectPointerVisitor*, long) ??:? (dart+0x1fffe57)
    #8 long dart::UntaggedObject::VisitPointersNonvirtual<dart::ScavengerVisitorBase<true> >(dart::ScavengerVisitorBase<true>*) ../../out/ReleaseTSANX64/../../runtime/vm/raw_object.h:467 (dart+0x212628f)
    #9 dart::ScavengerVisitorBase<true>::ProcessPromotedList() ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:1211 (dart+0x212628f)
    #10 dart::ScavengerVisitorBase<true>::ProcessSurvivors() ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:211 (dart+0x21250c9)
    #11 dart::ParallelScavengerTask::RunEnteredIsolateGroup() ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:550 (dart+0x212298f)
    #12 dart::Scavenger::ParallelScavenge(dart::SemiSpace*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:1632 (dart+0x21217ea)
    #13 dart::Scavenger::Scavenge() ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:1558 (dart+0x2120f64)
    #14 dart::Heap::CollectNewSpaceGarbage(dart::Thread*, dart::Heap::GCReason) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:453 (dart+0x2108835)
    #15 dart::Heap::CollectGarbage(dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:537 (dart+0x2106596)
    #16 dart::Heap::AllocateNew(long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:84 (dart+0x2106596)
    #17 dart::Heap::Allocate(long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.h:89 (dart+0x1edf326)
    #18 dart::Object::Allocate(long, long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:2584 (dart+0x1edf326)
    #19 dart::TypedData::New(long, long, dart::Heap::Space) ../../out/ReleaseTSANX64/../../runtime/vm/object.cc:24301 (dart+0x1f72f03)
    #20 dart::DRT_HelperAllocateTypedData(dart::Isolate*, dart::Thread*, dart::Zone*, dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:304 (dart+0x206cdbe)
    #21 dart::DRT_AllocateTypedData(dart::NativeArguments) ../../out/ReleaseTSANX64/../../runtime/vm/runtime_entry.cc:286 (dart+0x206cdbe)
    #22 <null> <null> (memfd:dart-codespace (deleted)+0x2162)
    #23 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&, dart::Array const&, unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:147 (dart+0x1e38cfb)
    #24 dart::DartEntry::InvokeFunction(dart::Function const&, dart::Array const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:37 (dart+0x1e3d012)
    #25 dart::DartLibraryCalls::HandleMessage(dart::Object const&, dart::Instance const&) ../../out/ReleaseTSANX64/../../runtime/vm/dart_entry.cc:792 (dart+0x1e3d012)
    #26 dart::IsolateMessageHandler::HandleMessage(std::__2::unique_ptr<dart::Message, std::__2::default_delete<dart::Message> >) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:1433 (dart+0x1e86037)
    #27 dart::MessageHandler::HandleMessages(dart::MonitorLocker*, bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:233 (dart+0x1ed22e0)
    #28 dart::MessageHandler::TaskCallback() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:443 (dart+0x1ed2ce0)
    #29 dart::MessageHandlerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/message_handler.cc:31 (dart+0x1ed3763)
    #30 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:158 (dart+0x20cba9c)
    #31 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:323 (dart+0x20cc485)
    #32 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:153 (dart+0x1fd2322)

  Previous write of size 8 at 0x7f44ca500040 by thread T3 (mutexes: write M302):
    #0 mmap ../recipe_cleanup/clangshYTOG/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:7141 (dart+0x1b792a1)
    #1 dart::MapAligned(int, int, long, long, long) ../../out/ReleaseTSANX64/../../runtime/vm/virtual_memory_posix.cc:222 (dart+0x20e9fc0)
    #2 dart::VirtualMemory::AllocateAligned(long, long, bool, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/virtual_memory_posix.cc:321 (dart+0x20e9fc0)
    #3 dart::OldPage::Allocate(long, dart::OldPage::PageType, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:51 (dart+0x2113625)
    #4 dart::PageSpace::AllocatePage(dart::OldPage::PageType, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:354 (dart+0x2113625)
    #5 dart::PageSpace::TryAllocateInFreshPage(long, dart::FreeList*, dart::OldPage::PageType, dart::PageSpace::GrowthPolicy, bool) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:490 (dart+0x2114471)
    #6 dart::PageSpace::TryAllocateDataBumpLocked(dart::FreeList*, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1379 (dart+0x2119954)
    #7 dart::PageSpace::TryAllocatePromoLockedSlow(dart::FreeList*, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:1413 (dart+0x21199b0)
    #8 dart::PageSpace::TryAllocatePromoLocked(dart::FreeList*, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.h:487 (dart+0x2125aaa)
    #9 dart::ScavengerVisitorBase<true>::ScavengeObject(dart::ObjectPtr) ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:359 (dart+0x2125aaa)
    #10 dart::ScavengerVisitorBase<true>::ScavengePointer(dart::ObjectPtr*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:285 (dart+0x2125aaa)
    #11 dart::ScavengerVisitorBase<true>::VisitPointers(dart::ObjectPtr*, dart::ObjectPtr*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:167 (dart+0x2125aaa)
    #12 dart::UntaggedObject::VisitPointersPredefined(dart::ObjectPointerVisitor*, long) ??:? (dart+0x2000046)
    #13 long dart::UntaggedObject::VisitPointersNonvirtual<dart::ScavengerVisitorBase<true> >(dart::ScavengerVisitorBase<true>*) ../../out/ReleaseTSANX64/../../runtime/vm/raw_object.h:467 (dart+0x2125751)
    #14 void dart::Scavenger::IterateStoreBuffers<true>(dart::ScavengerVisitorBase<true>*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:1091 (dart+0x2125751)
    #15 void dart::Scavenger::IterateRoots<true>(dart::ScavengerVisitorBase<true>*) ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:1148 (dart+0x212557a)
    #16 dart::ScavengerVisitorBase<true>::ProcessRoots() ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:198 (dart+0x2124f8f)
    #17 dart::ParallelScavengerTask::RunEnteredIsolateGroup() ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:544 (dart+0x212285e)
    #18 dart::ParallelScavengerTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/heap/scavenger.cc:533 (dart+0x2124dc9)
    #19 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:158 (dart+0x20cba9c)
    #20 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:323 (dart+0x20cc485)
    #21 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:153 (dart+0x1fd2322)

  Location is global '<null>' at 0x000000000000 (memfd:dart-oldspace (deleted)+0x000000000040)

  Mutex M305 (0x7b7c00020f00) created at:
    #0 pthread_mutex_init ../recipe_cleanup/clangshYTOG/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 (dart+0x1b4b88d)
    #1 Mutex ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:300 (dart+0x1fd2757)
    #2 FreeList ../../out/ReleaseTSANX64/../../runtime/vm/heap/freelist.cc:53 (dart+0x21031f7)
    #3 PageSpace ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:225 (dart+0x2112637)
    #4 Heap ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:50 (dart+0x21059c1)
    #5 dart::Heap::Init(dart::IsolateGroup*, bool, long, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:673 (dart+0x2109f43)
    #6 dart::IsolateGroup::CreateHeap(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:469 (dart+0x1e7ffe6)
    #7 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1351 (dart+0x278bdd9)
    #8 dart::bin::CreateAndSetupKernelIsolate(char const*, char const*, Dart_IsolateFlags*, char**, int*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:455 (dart+0x1bc3b31)
    #9 dart::bin::CreateIsolateGroupAndSetup(char const*, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:829 (dart+0x1bc3b31)
    #10 dart::RunKernelTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:100 (dart+0x1ebd1e9)
    #11 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:158 (dart+0x20cba9c)
    #12 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:323 (dart+0x20cc485)
    #13 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:153 (dart+0x1fd2322)

  Mutex M302 (0x7b7c00020a90) created at:
    #0 pthread_mutex_init ../recipe_cleanup/clangshYTOG/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 (dart+0x1b4b88d)
    #1 Mutex ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:300 (dart+0x1fd2757)
    #2 FreeList ../../out/ReleaseTSANX64/../../runtime/vm/heap/freelist.cc:53 (dart+0x21031f7)
    #3 PageSpace ../../out/ReleaseTSANX64/../../runtime/vm/heap/pages.cc:225 (dart+0x2112637)
    #4 Heap ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:50 (dart+0x21059c1)
    #5 dart::Heap::Init(dart::IsolateGroup*, bool, long, long) ../../out/ReleaseTSANX64/../../runtime/vm/heap/heap.cc:673 (dart+0x2109f43)
    #6 dart::IsolateGroup::CreateHeap(bool, bool) ../../out/ReleaseTSANX64/../../runtime/vm/isolate.cc:469 (dart+0x1e7ffe6)
    #7 Dart_CreateIsolateGroup ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1351 (dart+0x278bdd9)
    #8 dart::bin::CreateAndSetupKernelIsolate(char const*, char const*, Dart_IsolateFlags*, char**, int*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:455 (dart+0x1bc3b31)
    #9 dart::bin::CreateIsolateGroupAndSetup(char const*, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:829 (dart+0x1bc3b31)
    #10 dart::RunKernelTask::Run() ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:100 (dart+0x1ebd1e9)
    #11 dart::ThreadPool::WorkerLoop(dart::ThreadPool::Worker*) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:158 (dart+0x20cba9c)
    #12 dart::ThreadPool::Worker::Main(unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:323 (dart+0x20cc485)
    #13 dart::ThreadStart(void*) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:153 (dart+0x1fd2322)

  Thread T2 'DartWorker' (tid=3395041, running) created by main thread at:
    #0 pthread_create ../recipe_cleanup/clangshYTOG/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+0x1b4a41b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:172 (dart+0x1fd21ac)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:296 (dart+0x20cb159)
    #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:94 (dart+0x20cb159)
    #4 bool dart::ThreadPool::Run<dart::RunServiceTask>() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:46 (dart+0x2098628)
    #5 dart::ServiceIsolate::Run() ../../out/ReleaseTSANX64/../../runtime/vm/service_isolate.cc:496 (dart+0x2098628)
    #6 dart::Dart::Init(unsigned char const*, unsigned char const*, _Dart_Isolate* (*)(char const*, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**), bool (*)(void**, char**), void (*)(void*, void*), void (*)(void*, void*), void (*)(void*), void (*)(), void* (*)(char const*, bool), void (*)(unsigned char**, long*, void*), void (*)(void const*, long, void*), void (*)(void*), bool (*)(unsigned char*, long), _Dart_Handle* (*)(), bool, Dart_CodeObserver*) ../../out/ReleaseTSANX64/../../runtime/vm/dart.cc:427 (dart+0x1e2e86d)
    #7 Dart_Initialize ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:1158 (dart+0x278ae0c)
    #8 dart::bin::main(int, char**) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1325 (dart+0x1bc3238)
    #9 main ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1401 (dart+0x1bc4732)

  Thread T3 'DartWorker' (tid=3395042, running) created by main thread at:
    #0 pthread_create ../recipe_cleanup/clangshYTOG/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+0x1b4a41b)
    #1 dart::OSThread::Start(char const*, void (*)(unsigned long), unsigned long) ../../out/ReleaseTSANX64/../../runtime/vm/os_thread_linux.cc:172 (dart+0x1fd21ac)
    #2 dart::ThreadPool::Worker::StartThread() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.cc:296 (dart+0x20cb159)
    #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:94 (dart+0x20cb159)
    #4 bool dart::ThreadPool::Run<dart::RunKernelTask>() ../../out/ReleaseTSANX64/../../runtime/vm/thread_pool.h:46 (dart+0x1eb9ecb)
    #5 dart::KernelIsolate::Start() ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:257 (dart+0x1eb9ecb)
    #6 dart::KernelIsolate::DetectNullSafety(char const*, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/kernel_isolate.cc:1061 (dart+0x1ebb1da)
    #7 dart::Dart::DetectNullSafety(char const*, unsigned char const*, unsigned char const*, unsigned char const*, long, char const*, char const*) ../../out/ReleaseTSANX64/../../runtime/vm/dart.cc:805 (dart+0x1e2f995)
    #8 Dart_DetectNullSafety ../../out/ReleaseTSANX64/../../runtime/vm/dart_api_impl.cc:6188 (dart+0x27bf6d9)
    #9 dart::bin::CreateIsolateGroupAndSetupHelper(bool, char const*, char const*, char const*, Dart_IsolateFlags*, void*, char**, int*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:740 (dart+0x1bc24f6)
    #10 dart::bin::RunMainIsolate(char const*, char const*, dart::bin::CommandLineOptions*) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:958 (dart+0x1bc1b51)
    #11 dart::bin::main(int, char**) ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1363 (dart+0x1bc3445)
    #12 main ../../out/ReleaseTSANX64/../../runtime/bin/main.cc:1401 (dart+0x1bc4732)

SUMMARY: ThreadSanitizer: data race ../../out/ReleaseTSANX64/../../buildtools/linux-x64/clang/bin/../include/c++/v1/atomic:977 in unsigned long std::__2::__cxx_atomic_load<unsigned long>(std::__2::__cxx_atomic_base_impl<unsigned long> const*, std::__2::memory_order)
==================

cc @rmacnak-google
@aam aam added the area-vm Use area-vm for VM related issues, including code coverage, FFI, and the AOT and JIT backends. label Mar 5, 2021
dart-bot pushed a commit that referenced this issue Mar 9, 2021
@rmacnak-google
[vm, gc] Remove data race updating TypedDataView::pointer_ during par…
927d45d 
…allel scavenge.

TEST=tsan

Bug: #45217
Change-Id: I0045b793767b8397c62ce992cc775eff989e8642
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/189800
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
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