client channel: fix TSAN flake in FilterBasedLoadBalancedCall #32491
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ctiller
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Feb 27, 2023
ctiller
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Feb 27, 2023
apolcyn
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Mar 1, 2023
…e server that immediatley closes the connection (#32499) Alongside #32496, this makes this test behave the same on all platforms. FWIW, I verified this causes us to see the previous lock cycle problem in #32491 on linux - originally that lock cycle was only on mac, because of environmental differences between mac and linux in CI.
XuanWang-Amos
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May 1, 2023
…2491) This fixes a very strange TSAN flake seen in an internal test (b/268292646), which seems to have been introduced in grpc#32326. I've included an example of the TSAN failure below, for future reference. I don't fully understand what is causing this failure. It looks like the async callback from a previous picker update caused the pick to be re-queued but then got stuck draining queued callbacks in its `ExecCtx` instance, while the async callback from the next picker update had already failed the call. But the part I don't understand is why the call combiner cancellation callback wound up scheduled on the `ExecCtx` instance from the first thread -- that seems likely to be caused by either the `WorkSerializer` or maybe `ExecCtx` work-stealing, but the exact details are likely to be hard to nail down. Switching from `EventEngine::Run()` back to `ExecCtx::Run()` seems to fix the flake, so that's what I'm doing in this PR. I find this work-around deeply dissatisfying, especially since I do not fully understand the root cause of the problem. However, given that we are working toward eliminating the `FilterBasedLoadBalancedCall` code entirely as part of the promise conversion, this problem is probably not worth further investigation. ``` WARNING: ThreadSanitizer: data race (pid=7406) Read of size 8 at 0x7b8800037558 by thread T47: #0 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::~FilterBasedLoadBalancedCall() third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:2780:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x530ed) (BuildId: a8369742d3c435f7f1a244a535f4907c) #1 Delete third_party/grpc/src/core/lib/gprpp/ref_counted.h:248:31 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) (BuildId: a8369742d3c435f7f1a244a535f4907c) #2 Unref third_party/grpc/src/core/lib/gprpp/orphanable.h:102:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #3 ~RefCountedPtr third_party/grpc/src/core/lib/gprpp/ref_counted_ptr.h:103:36 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #4 ~LbQueuedCallCanceller third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3132:51 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #5 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::LbQueuedCallCanceller::CancelLocked(void*, absl::Status) third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3168:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #6 exec_ctx_run third_party/grpc/src/core/lib/iomgr/exec_ctx.cc:45:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x4199) (BuildId: cafb035b95f6c781e93706a71dce95f3) #7 grpc_core::ExecCtx::Flush() third_party/grpc/src/core/lib/iomgr/exec_ctx.cc:72:9 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x4199) #8 ~ExecCtx third_party/grpc/src/core/lib/iomgr/exec_ctx.h:117:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) (BuildId: a8369742d3c435f7f1a244a535f4907c) #9 operator() third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3201:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #10 __invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #11 invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #12 InvokeR<void, (lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &, void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #13 void absl::internal_any_invocable::LocalInvoker<false, void, grpc_core::ClientChannel::FilterBasedLoadBalancedCall::RetryPickLocked()::$_0&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #14 operator() third_party/absl/functional/internal/any_invocable.h:855:1 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) (BuildId: 7802a789e61dddac5a33230a2f294046) #15 util::functional::internal::FunctorCallback<Closure, false, absl::AnyInvocable<void ()>, void ()>::Run() util/functional/to_callback_internal.h:87:27 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) #16 void eventmanager::EventManager::RunTask<false>(eventmanager::EventManager::WorkerThread*, eventmanager::TaskInfo*) net/eventmanager/em1/eventmanager.cc:2464:20 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2ae1b) (BuildId: b3d97518d96e160722658c4aa0795013) #17 void eventmanager::EventManager::RunWorkerLoop<false, false>(eventmanager::EventManager::WorkerThread*) net/eventmanager/em1/eventmanager.cc (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2a45d) (BuildId: b3d97518d96e160722658c4aa0795013) #18 eventmanager::EventManager::WorkerThread::WorkerMain() net/eventmanager/em1/eventmanager.cc:430:19 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1d841) (BuildId: b3d97518d96e160722658c4aa0795013) #19 operator() net/eventmanager/em1/eventmanager.cc:396:64 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) (BuildId: b3d97518d96e160722658c4aa0795013) #20 __invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #21 invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #22 InvokeR<void, (lambda at net/eventmanager/em1/eventmanager.cc:396:55), void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #23 void absl::internal_any_invocable::LocalInvoker<false, void, eventmanager::EventManager::WorkerThread::StartThread(int, int, thread::SchedPolicy, std::__tsan::basic_string_view<char, std::__tsan::char_traits<char>>)::'lambda'()&&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #24 operator() third_party/absl/functional/internal/any_invocable.h:863:1 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) (BuildId: a86eb59aee0be7b5882a1b532922e3ca) #25 ClosureThread::Run() thread/thread.h:459:25 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) #26 Thread::ThreadBody(void*) thread/thread.cc:1284:16 (libST-a5842b3303c3_thread_Slibthread.so+0x251e9) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) Previous write of size 8 at 0x7b8800037558 by thread T40: #0 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::PendingBatchesFail(absl::Status, bool (*)(grpc_core::CallCombinerClosureList const&)) third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:2863:13 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x537c7) (BuildId: a8369742d3c435f7f1a244a535f4907c) #1 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::TryPick(bool) third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3179:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x5537f) (BuildId: a8369742d3c435f7f1a244a535f4907c) #2 operator() third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3200:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) (BuildId: a8369742d3c435f7f1a244a535f4907c) #3 __invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #4 invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #5 InvokeR<void, (lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &, void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #6 void absl::internal_any_invocable::LocalInvoker<false, void, grpc_core::ClientChannel::FilterBasedLoadBalancedCall::RetryPickLocked()::$_0&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #7 operator() third_party/absl/functional/internal/any_invocable.h:855:1 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) (BuildId: 7802a789e61dddac5a33230a2f294046) #8 util::functional::internal::FunctorCallback<Closure, false, absl::AnyInvocable<void ()>, void ()>::Run() util/functional/to_callback_internal.h:87:27 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) #9 void eventmanager::EventManager::RunTask<false>(eventmanager::EventManager::WorkerThread*, eventmanager::TaskInfo*) net/eventmanager/em1/eventmanager.cc:2464:20 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2ae1b) (BuildId: b3d97518d96e160722658c4aa0795013) #10 void eventmanager::EventManager::RunWorkerLoop<false, false>(eventmanager::EventManager::WorkerThread*) net/eventmanager/em1/eventmanager.cc (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2a45d) (BuildId: b3d97518d96e160722658c4aa0795013) #11 eventmanager::EventManager::WorkerThread::WorkerMain() net/eventmanager/em1/eventmanager.cc:430:19 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1d841) (BuildId: b3d97518d96e160722658c4aa0795013) #12 operator() net/eventmanager/em1/eventmanager.cc:396:64 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) (BuildId: b3d97518d96e160722658c4aa0795013) #13 __invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #14 invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #15 InvokeR<void, (lambda at net/eventmanager/em1/eventmanager.cc:396:55), void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #16 void absl::internal_any_invocable::LocalInvoker<false, void, eventmanager::EventManager::WorkerThread::StartThread(int, int, thread::SchedPolicy, std::__tsan::basic_string_view<char, std::__tsan::char_traits<char>>)::'lambda'()&&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #17 operator() third_party/absl/functional/internal/any_invocable.h:863:1 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) (BuildId: a86eb59aee0be7b5882a1b532922e3ca) #18 ClosureThread::Run() thread/thread.h:459:25 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) #19 Thread::ThreadBody(void*) thread/thread.cc:1284:16 (libST-a5842b3303c3_thread_Slibthread.so+0x251e9) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) Thread T47 'EventManager_Default' (tid=7454, running) created by main thread at: #0 pthread_create third_party/llvm/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1048:3 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x1887b9) (BuildId: e468d94e410a7e13e19b26c4f7277674) #1 Thread::CreatePthread(pthread_attr_t&) thread/thread.cc:485:13 (libST-a5842b3303c3_thread_Slibthread.so+0x24b1d) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #2 Thread::Start() thread/thread.cc:667:3 (libST-a5842b3303c3_thread_Slibthread.so+0x2574b) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #3 StartThread net/eventmanager/em1/eventmanager.cc:397:14 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) (BuildId: b3d97518d96e160722658c4aa0795013) #4 eventmanager::EventManager::EventManager(eventmanager::EventManager::Options const&) net/eventmanager/em1/eventmanager.cc:1274:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) #5 InitializeDefaultEventManager() net/eventmanager/em1/eventmanager.cc:3042:39 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25c06) (BuildId: b3d97518d96e160722658c4aa0795013) #6 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #7 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #8 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #9 GoogleOnceInternalInit base/once.cc:23:5 (libST-a5842b3303c3_base_Slibonce.so+0xeee) (BuildId: 6c436371e89d7962c2b544d27465d6a0) #10 GoogleOnceInternalInitSchedCoopAndKernel(std::__tsan::atomic<unsigned int>*, void (*)()) base/once.cc:15:3 (libST-a5842b3303c3_base_Slibonce.so+0xeee) #11 GoogleOnceInit base/once.h:72:5 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) (BuildId: b3d97518d96e160722658c4aa0795013) #12 eventmanager::EventManager::DefaultEventManager() net/eventmanager/em1/eventmanager.cc:3059:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) #13 Default net/eventmanager/em1/eventmanager.h:780:43 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) (BuildId: 2e1dde05e8bce5319856279d896c4405) #14 eventmanager::Default() net/eventmanager/eventmanager_default.cc:22:10 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) #15 grpc::(anonymous namespace)::InitGlobalEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:38:23 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x1c28) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #16 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #17 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #18 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #19 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #20 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #21 grpc::GetGrpcEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:51:3 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x18c1) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #22 check_engine_available(bool) net/grpc/internal/src/core/ext/poller/event_manager_poller/ev_event_manager_linux.cc:1271:21 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Spoller_Sevent_Umanager_Upoller_Slibev_Uevent_Umanager_Ulinux.so+0x4fcb) (BuildId: 620adb83259aed32440614774678b3a1) #23 try_engine third_party/grpc/src/core/lib/iomgr/ev_posix.cc:141:9 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) (BuildId: 3cb6b043bd10222927301e33a3760646) #24 operator() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:184:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #25 grpc_event_engine_init()::$_0::__invoke() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #26 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #27 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #28 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #29 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #30 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #31 grpc_event_engine_init() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xacab1) (BuildId: 3cb6b043bd10222927301e33a3760646) #32 iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_posix.cc:43:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xaf1d0) (BuildId: 3cb6b043bd10222927301e33a3760646) #33 grpc_iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_internal.cc:35:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x688b) (BuildId: cafb035b95f6c781e93706a71dce95f3) #34 grpc_iomgr_init() third_party/grpc/src/core/lib/iomgr/iomgr.cc:66:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xae777) (BuildId: 3cb6b043bd10222927301e33a3760646) #35 grpc_init third_party/grpc/src/core/lib/surface/init.cc:144:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc.so+0x4518) (BuildId: 778b43e2e8f8c132a7acf9b3da117fff) #36 k3::(anonymous namespace)::GrpcInitHackEnvironment::SetUp() storage/k3/grpc/grpc_server_test.cc:144:27 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x212d21) (BuildId: e468d94e410a7e13e19b26c4f7277674) #37 SetUpEnvironment third_party/googletest/googletest/src/gtest.cc:5763:55 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #38 for_each<std::__tsan::__wrap_iter<testing::Environment *const *>, void (*)(testing::Environment *)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__algorithm/for_each.h:26:5 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #39 ForEach<std::__tsan::vector<testing::Environment *, std::__tsan::allocator<testing::Environment *> >, void (*)(testing::Environment *)> third_party/googletest/googletest/src/gtest-internal-inl.h:288:3 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #40 testing::internal::UnitTestImpl::RunAllTests() third_party/googletest/googletest/src/gtest.cc:5876:9 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #41 HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> third_party/googletest/googletest/src/gtest.cc (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #42 testing::UnitTest::Run() third_party/googletest/googletest/src/gtest.cc:5464:10 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) #43 RUN_ALL_TESTS third_party/googletest/googletest/include/gtest/gtest.h:2329:73 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) (BuildId: e468d94e410a7e13e19b26c4f7277674) #44 main testing/base/internal/gunit_main.cc:86:10 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) Thread T40 'EventManager_Default' (tid=7447, running) created by main thread at: #0 pthread_create third_party/llvm/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1048:3 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x1887b9) (BuildId: e468d94e410a7e13e19b26c4f7277674) #1 Thread::CreatePthread(pthread_attr_t&) thread/thread.cc:485:13 (libST-a5842b3303c3_thread_Slibthread.so+0x24b1d) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #2 Thread::Start() thread/thread.cc:667:3 (libST-a5842b3303c3_thread_Slibthread.so+0x2574b) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #3 StartThread net/eventmanager/em1/eventmanager.cc:397:14 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) (BuildId: b3d97518d96e160722658c4aa0795013) #4 eventmanager::EventManager::EventManager(eventmanager::EventManager::Options const&) net/eventmanager/em1/eventmanager.cc:1274:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) #5 InitializeDefaultEventManager() net/eventmanager/em1/eventmanager.cc:3042:39 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25c06) (BuildId: b3d97518d96e160722658c4aa0795013) #6 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #7 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #8 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #9 GoogleOnceInternalInit base/once.cc:23:5 (libST-a5842b3303c3_base_Slibonce.so+0xeee) (BuildId: 6c436371e89d7962c2b544d27465d6a0) #10 GoogleOnceInternalInitSchedCoopAndKernel(std::__tsan::atomic<unsigned int>*, void (*)()) base/once.cc:15:3 (libST-a5842b3303c3_base_Slibonce.so+0xeee) #11 GoogleOnceInit base/once.h:72:5 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) (BuildId: b3d97518d96e160722658c4aa0795013) #12 eventmanager::EventManager::DefaultEventManager() net/eventmanager/em1/eventmanager.cc:3059:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) #13 Default net/eventmanager/em1/eventmanager.h:780:43 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) (BuildId: 2e1dde05e8bce5319856279d896c4405) #14 eventmanager::Default() net/eventmanager/eventmanager_default.cc:22:10 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) #15 grpc::(anonymous namespace)::InitGlobalEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:38:23 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x1c28) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #16 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #17 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #18 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #19 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #20 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #21 grpc::GetGrpcEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:51:3 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x18c1) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #22 check_engine_available(bool) net/grpc/internal/src/core/ext/poller/event_manager_poller/ev_event_manager_linux.cc:1271:21 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Spoller_Sevent_Umanager_Upoller_Slibev_Uevent_Umanager_Ulinux.so+0x4fcb) (BuildId: 620adb83259aed32440614774678b3a1) #23 try_engine third_party/grpc/src/core/lib/iomgr/ev_posix.cc:141:9 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) (BuildId: 3cb6b043bd10222927301e33a3760646) #24 operator() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:184:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #25 grpc_event_engine_init()::$_0::__invoke() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #26 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #27 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #28 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #29 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #30 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #31 grpc_event_engine_init() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xacab1) (BuildId: 3cb6b043bd10222927301e33a3760646) #32 iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_posix.cc:43:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xaf1d0) (BuildId: 3cb6b043bd10222927301e33a3760646) #33 grpc_iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_internal.cc:35:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x688b) (BuildId: cafb035b95f6c781e93706a71dce95f3) #34 grpc_iomgr_init() third_party/grpc/src/core/lib/iomgr/iomgr.cc:66:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xae777) (BuildId: 3cb6b043bd10222927301e33a3760646) #35 grpc_init third_party/grpc/src/core/lib/surface/init.cc:144:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc.so+0x4518) (BuildId: 778b43e2e8f8c132a7acf9b3da117fff) #36 k3::(anonymous namespace)::GrpcInitHackEnvironment::SetUp() storage/k3/grpc/grpc_server_test.cc:144:27 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x212d21) (BuildId: e468d94e410a7e13e19b26c4f7277674) #37 SetUpEnvironment third_party/googletest/googletest/src/gtest.cc:5763:55 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #38 for_each<std::__tsan::__wrap_iter<testing::Environment *const *>, void (*)(testing::Environment *)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__algorithm/for_each.h:26:5 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #39 ForEach<std::__tsan::vector<testing::Environment *, std::__tsan::allocator<testing::Environment *> >, void (*)(testing::Environment *)> third_party/googletest/googletest/src/gtest-internal-inl.h:288:3 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #40 testing::internal::UnitTestImpl::RunAllTests() third_party/googletest/googletest/src/gtest.cc:5876:9 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #41 HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> third_party/googletest/googletest/src/gtest.cc (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #42 testing::UnitTest::Run() third_party/googletest/googletest/src/gtest.cc:5464:10 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) #43 RUN_ALL_TESTS third_party/googletest/googletest/include/gtest/gtest.h:2329:73 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) (BuildId: e468d94e410a7e13e19b26c4f7277674) #44 main testing/base/internal/gunit_main.cc:86:10 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) SUMMARY: ThreadSanitizer: data race third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:2780:5 in grpc_core::ClientChannel::FilterBasedLoadBalancedCall::~FilterBasedLoadBalancedCall() ```
XuanWang-Amos
pushed a commit
to XuanWang-Amos/grpc
that referenced
this pull request
May 1, 2023
…e server that immediatley closes the connection (grpc#32499) Alongside grpc#32496, this makes this test behave the same on all platforms. FWIW, I verified this causes us to see the previous lock cycle problem in grpc#32491 on linux - originally that lock cycle was only on mac, because of environmental differences between mac and linux in CI.
wanlin31
pushed a commit
that referenced
this pull request
May 18, 2023
This fixes a very strange TSAN flake seen in an internal test (b/268292646), which seems to have been introduced in #32326. I've included an example of the TSAN failure below, for future reference. I don't fully understand what is causing this failure. It looks like the async callback from a previous picker update caused the pick to be re-queued but then got stuck draining queued callbacks in its `ExecCtx` instance, while the async callback from the next picker update had already failed the call. But the part I don't understand is why the call combiner cancellation callback wound up scheduled on the `ExecCtx` instance from the first thread -- that seems likely to be caused by either the `WorkSerializer` or maybe `ExecCtx` work-stealing, but the exact details are likely to be hard to nail down. Switching from `EventEngine::Run()` back to `ExecCtx::Run()` seems to fix the flake, so that's what I'm doing in this PR. I find this work-around deeply dissatisfying, especially since I do not fully understand the root cause of the problem. However, given that we are working toward eliminating the `FilterBasedLoadBalancedCall` code entirely as part of the promise conversion, this problem is probably not worth further investigation. ``` WARNING: ThreadSanitizer: data race (pid=7406) Read of size 8 at 0x7b8800037558 by thread T47: #0 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::~FilterBasedLoadBalancedCall() third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:2780:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x530ed) (BuildId: a8369742d3c435f7f1a244a535f4907c) #1 Delete third_party/grpc/src/core/lib/gprpp/ref_counted.h:248:31 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) (BuildId: a8369742d3c435f7f1a244a535f4907c) #2 Unref third_party/grpc/src/core/lib/gprpp/orphanable.h:102:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #3 ~RefCountedPtr third_party/grpc/src/core/lib/gprpp/ref_counted_ptr.h:103:36 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #4 ~LbQueuedCallCanceller third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3132:51 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #5 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::LbQueuedCallCanceller::CancelLocked(void*, absl::Status) third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3168:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x64a73) #6 exec_ctx_run third_party/grpc/src/core/lib/iomgr/exec_ctx.cc:45:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x4199) (BuildId: cafb035b95f6c781e93706a71dce95f3) #7 grpc_core::ExecCtx::Flush() third_party/grpc/src/core/lib/iomgr/exec_ctx.cc:72:9 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x4199) #8 ~ExecCtx third_party/grpc/src/core/lib/iomgr/exec_ctx.h:117:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) (BuildId: a8369742d3c435f7f1a244a535f4907c) #9 operator() third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3201:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #10 __invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #11 invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #12 InvokeR<void, (lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &, void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #13 void absl::internal_any_invocable::LocalInvoker<false, void, grpc_core::ClientChannel::FilterBasedLoadBalancedCall::RetryPickLocked()::$_0&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c095) #14 operator() third_party/absl/functional/internal/any_invocable.h:855:1 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) (BuildId: 7802a789e61dddac5a33230a2f294046) #15 util::functional::internal::FunctorCallback<Closure, false, absl::AnyInvocable<void ()>, void ()>::Run() util/functional/to_callback_internal.h:87:27 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) #16 void eventmanager::EventManager::RunTask<false>(eventmanager::EventManager::WorkerThread*, eventmanager::TaskInfo*) net/eventmanager/em1/eventmanager.cc:2464:20 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2ae1b) (BuildId: b3d97518d96e160722658c4aa0795013) #17 void eventmanager::EventManager::RunWorkerLoop<false, false>(eventmanager::EventManager::WorkerThread*) net/eventmanager/em1/eventmanager.cc (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2a45d) (BuildId: b3d97518d96e160722658c4aa0795013) #18 eventmanager::EventManager::WorkerThread::WorkerMain() net/eventmanager/em1/eventmanager.cc:430:19 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1d841) (BuildId: b3d97518d96e160722658c4aa0795013) #19 operator() net/eventmanager/em1/eventmanager.cc:396:64 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) (BuildId: b3d97518d96e160722658c4aa0795013) #20 __invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #21 invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #22 InvokeR<void, (lambda at net/eventmanager/em1/eventmanager.cc:396:55), void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #23 void absl::internal_any_invocable::LocalInvoker<false, void, eventmanager::EventManager::WorkerThread::StartThread(int, int, thread::SchedPolicy, std::__tsan::basic_string_view<char, std::__tsan::char_traits<char>>)::'lambda'()&&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #24 operator() third_party/absl/functional/internal/any_invocable.h:863:1 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) (BuildId: a86eb59aee0be7b5882a1b532922e3ca) #25 ClosureThread::Run() thread/thread.h:459:25 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) #26 Thread::ThreadBody(void*) thread/thread.cc:1284:16 (libST-a5842b3303c3_thread_Slibthread.so+0x251e9) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) Previous write of size 8 at 0x7b8800037558 by thread T40: #0 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::PendingBatchesFail(absl::Status, bool (*)(grpc_core::CallCombinerClosureList const&)) third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:2863:13 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x537c7) (BuildId: a8369742d3c435f7f1a244a535f4907c) #1 grpc_core::ClientChannel::FilterBasedLoadBalancedCall::TryPick(bool) third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3179:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x5537f) (BuildId: a8369742d3c435f7f1a244a535f4907c) #2 operator() third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3200:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) (BuildId: a8369742d3c435f7f1a244a535f4907c) #3 __invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #4 invoke<(lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #5 InvokeR<void, (lambda at third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:3196:46) &, void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #6 void absl::internal_any_invocable::LocalInvoker<false, void, grpc_core::ClientChannel::FilterBasedLoadBalancedCall::RetryPickLocked()::$_0&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Uclient_Uchannel.so+0x6c077) #7 operator() third_party/absl/functional/internal/any_invocable.h:855:1 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) (BuildId: 7802a789e61dddac5a33230a2f294046) #8 util::functional::internal::FunctorCallback<Closure, false, absl::AnyInvocable<void ()>, void ()>::Run() util/functional/to_callback_internal.h:87:27 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibevent_Uengine_Uem_Uimpl.so+0x16a74) #9 void eventmanager::EventManager::RunTask<false>(eventmanager::EventManager::WorkerThread*, eventmanager::TaskInfo*) net/eventmanager/em1/eventmanager.cc:2464:20 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2ae1b) (BuildId: b3d97518d96e160722658c4aa0795013) #10 void eventmanager::EventManager::RunWorkerLoop<false, false>(eventmanager::EventManager::WorkerThread*) net/eventmanager/em1/eventmanager.cc (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x2a45d) (BuildId: b3d97518d96e160722658c4aa0795013) #11 eventmanager::EventManager::WorkerThread::WorkerMain() net/eventmanager/em1/eventmanager.cc:430:19 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1d841) (BuildId: b3d97518d96e160722658c4aa0795013) #12 operator() net/eventmanager/em1/eventmanager.cc:396:64 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) (BuildId: b3d97518d96e160722658c4aa0795013) #13 __invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #14 invoke<(lambda at net/eventmanager/em1/eventmanager.cc:396:55)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #15 InvokeR<void, (lambda at net/eventmanager/em1/eventmanager.cc:396:55), void> third_party/absl/functional/internal/any_invocable.h:131:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #16 void absl::internal_any_invocable::LocalInvoker<false, void, eventmanager::EventManager::WorkerThread::StartThread(int, int, thread::SchedPolicy, std::__tsan::basic_string_view<char, std::__tsan::char_traits<char>>)::'lambda'()&&>(absl::internal_any_invocable::TypeErasedState*) third_party/absl/functional/internal/any_invocable.h:301:10 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x28351) #17 operator() third_party/absl/functional/internal/any_invocable.h:863:1 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) (BuildId: a86eb59aee0be7b5882a1b532922e3ca) #18 ClosureThread::Run() thread/thread.h:459:25 (libST-a5842b3303c3_security_Sganpati_Ssharded_Uclient_Slibacl_Ucache.so+0x24c1e) #19 Thread::ThreadBody(void*) thread/thread.cc:1284:16 (libST-a5842b3303c3_thread_Slibthread.so+0x251e9) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) Thread T47 'EventManager_Default' (tid=7454, running) created by main thread at: #0 pthread_create third_party/llvm/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1048:3 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x1887b9) (BuildId: e468d94e410a7e13e19b26c4f7277674) #1 Thread::CreatePthread(pthread_attr_t&) thread/thread.cc:485:13 (libST-a5842b3303c3_thread_Slibthread.so+0x24b1d) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #2 Thread::Start() thread/thread.cc:667:3 (libST-a5842b3303c3_thread_Slibthread.so+0x2574b) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #3 StartThread net/eventmanager/em1/eventmanager.cc:397:14 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) (BuildId: b3d97518d96e160722658c4aa0795013) #4 eventmanager::EventManager::EventManager(eventmanager::EventManager::Options const&) net/eventmanager/em1/eventmanager.cc:1274:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) #5 InitializeDefaultEventManager() net/eventmanager/em1/eventmanager.cc:3042:39 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25c06) (BuildId: b3d97518d96e160722658c4aa0795013) #6 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #7 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #8 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #9 GoogleOnceInternalInit base/once.cc:23:5 (libST-a5842b3303c3_base_Slibonce.so+0xeee) (BuildId: 6c436371e89d7962c2b544d27465d6a0) #10 GoogleOnceInternalInitSchedCoopAndKernel(std::__tsan::atomic<unsigned int>*, void (*)()) base/once.cc:15:3 (libST-a5842b3303c3_base_Slibonce.so+0xeee) #11 GoogleOnceInit base/once.h:72:5 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) (BuildId: b3d97518d96e160722658c4aa0795013) #12 eventmanager::EventManager::DefaultEventManager() net/eventmanager/em1/eventmanager.cc:3059:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) #13 Default net/eventmanager/em1/eventmanager.h:780:43 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) (BuildId: 2e1dde05e8bce5319856279d896c4405) #14 eventmanager::Default() net/eventmanager/eventmanager_default.cc:22:10 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) #15 grpc::(anonymous namespace)::InitGlobalEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:38:23 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x1c28) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #16 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #17 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #18 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #19 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #20 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #21 grpc::GetGrpcEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:51:3 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x18c1) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #22 check_engine_available(bool) net/grpc/internal/src/core/ext/poller/event_manager_poller/ev_event_manager_linux.cc:1271:21 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Spoller_Sevent_Umanager_Upoller_Slibev_Uevent_Umanager_Ulinux.so+0x4fcb) (BuildId: 620adb83259aed32440614774678b3a1) #23 try_engine third_party/grpc/src/core/lib/iomgr/ev_posix.cc:141:9 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) (BuildId: 3cb6b043bd10222927301e33a3760646) #24 operator() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:184:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #25 grpc_event_engine_init()::$_0::__invoke() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #26 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #27 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #28 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #29 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #30 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #31 grpc_event_engine_init() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xacab1) (BuildId: 3cb6b043bd10222927301e33a3760646) #32 iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_posix.cc:43:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xaf1d0) (BuildId: 3cb6b043bd10222927301e33a3760646) #33 grpc_iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_internal.cc:35:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x688b) (BuildId: cafb035b95f6c781e93706a71dce95f3) #34 grpc_iomgr_init() third_party/grpc/src/core/lib/iomgr/iomgr.cc:66:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xae777) (BuildId: 3cb6b043bd10222927301e33a3760646) #35 grpc_init third_party/grpc/src/core/lib/surface/init.cc:144:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc.so+0x4518) (BuildId: 778b43e2e8f8c132a7acf9b3da117fff) #36 k3::(anonymous namespace)::GrpcInitHackEnvironment::SetUp() storage/k3/grpc/grpc_server_test.cc:144:27 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x212d21) (BuildId: e468d94e410a7e13e19b26c4f7277674) #37 SetUpEnvironment third_party/googletest/googletest/src/gtest.cc:5763:55 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #38 for_each<std::__tsan::__wrap_iter<testing::Environment *const *>, void (*)(testing::Environment *)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__algorithm/for_each.h:26:5 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #39 ForEach<std::__tsan::vector<testing::Environment *, std::__tsan::allocator<testing::Environment *> >, void (*)(testing::Environment *)> third_party/googletest/googletest/src/gtest-internal-inl.h:288:3 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #40 testing::internal::UnitTestImpl::RunAllTests() third_party/googletest/googletest/src/gtest.cc:5876:9 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #41 HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> third_party/googletest/googletest/src/gtest.cc (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #42 testing::UnitTest::Run() third_party/googletest/googletest/src/gtest.cc:5464:10 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) #43 RUN_ALL_TESTS third_party/googletest/googletest/include/gtest/gtest.h:2329:73 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) (BuildId: e468d94e410a7e13e19b26c4f7277674) #44 main testing/base/internal/gunit_main.cc:86:10 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) Thread T40 'EventManager_Default' (tid=7447, running) created by main thread at: #0 pthread_create third_party/llvm/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:1048:3 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x1887b9) (BuildId: e468d94e410a7e13e19b26c4f7277674) #1 Thread::CreatePthread(pthread_attr_t&) thread/thread.cc:485:13 (libST-a5842b3303c3_thread_Slibthread.so+0x24b1d) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #2 Thread::Start() thread/thread.cc:667:3 (libST-a5842b3303c3_thread_Slibthread.so+0x2574b) (BuildId: a1762ef5c5732b3ad8a3b3d798292e27) #3 StartThread net/eventmanager/em1/eventmanager.cc:397:14 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) (BuildId: b3d97518d96e160722658c4aa0795013) #4 eventmanager::EventManager::EventManager(eventmanager::EventManager::Options const&) net/eventmanager/em1/eventmanager.cc:1274:23 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x1bbed) #5 InitializeDefaultEventManager() net/eventmanager/em1/eventmanager.cc:3042:39 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25c06) (BuildId: b3d97518d96e160722658c4aa0795013) #6 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #7 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #8 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #9 GoogleOnceInternalInit base/once.cc:23:5 (libST-a5842b3303c3_base_Slibonce.so+0xeee) (BuildId: 6c436371e89d7962c2b544d27465d6a0) #10 GoogleOnceInternalInitSchedCoopAndKernel(std::__tsan::atomic<unsigned int>*, void (*)()) base/once.cc:15:3 (libST-a5842b3303c3_base_Slibonce.so+0xeee) #11 GoogleOnceInit base/once.h:72:5 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) (BuildId: b3d97518d96e160722658c4aa0795013) #12 eventmanager::EventManager::DefaultEventManager() net/eventmanager/em1/eventmanager.cc:3059:3 (libST-a5842b3303c3_net_Seventmanager_Sem1_Slibem1.so+0x25ad9) #13 Default net/eventmanager/em1/eventmanager.h:780:43 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) (BuildId: 2e1dde05e8bce5319856279d896c4405) #14 eventmanager::Default() net/eventmanager/eventmanager_default.cc:22:10 (libST-a5842b3303c3_net_Seventmanager_Slibeventmanager_Udefault.so+0x14c5) #15 grpc::(anonymous namespace)::InitGlobalEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:38:23 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x1c28) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #16 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #17 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #18 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #19 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #20 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #21 grpc::GetGrpcEventManager() net/grpc/internal/src/core/ext/event_engine/grpc_event_manager.cc:51:3 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Sevent_Uengine_Slibgrpc_Uevent_Umanager.so+0x18c1) (BuildId: 8bd3c1826fd11ffa128e7839a85c05a0) #22 check_engine_available(bool) net/grpc/internal/src/core/ext/poller/event_manager_poller/ev_event_manager_linux.cc:1271:21 (libST-a5842b3303c3_net_Sgrpc_Sinternal_Ssrc_Score_Sext_Spoller_Sevent_Umanager_Upoller_Slibev_Uevent_Umanager_Ulinux.so+0x4fcb) (BuildId: 620adb83259aed32440614774678b3a1) #23 try_engine third_party/grpc/src/core/lib/iomgr/ev_posix.cc:141:9 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) (BuildId: 3cb6b043bd10222927301e33a3760646) #24 operator() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:184:7 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #25 grpc_event_engine_init()::$_0::__invoke() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xad888) #26 __invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:394:23 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #27 invoke<void (*&)()> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__functional/invoke.h:539:12 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #28 void absl::base_internal::CallOnceImpl<void (*&)()>(std::__tsan::atomic<unsigned int>*, absl::base_internal::SchedulingMode, void (*&)()) third_party/absl/base/call_once.h:184:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaab9) #29 call_once<void (*&)()> third_party/absl/base/call_once.h:216:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) (BuildId: fe43c5a995ecc22efa243d05ef607fb9) #30 gpr_once_init third_party/grpc/src/core/lib/gpr/sync_abseil.cc:107:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgpr.so+0xaa0b) #31 grpc_event_engine_init() third_party/grpc/src/core/lib/iomgr/ev_posix.cc:175:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xacab1) (BuildId: 3cb6b043bd10222927301e33a3760646) #32 iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_posix.cc:43:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xaf1d0) (BuildId: 3cb6b043bd10222927301e33a3760646) #33 grpc_iomgr_platform_init() third_party/grpc/src/core/lib/iomgr/iomgr_internal.cc:35:35 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibexec_Uctx.so+0x688b) (BuildId: cafb035b95f6c781e93706a71dce95f3) #34 grpc_iomgr_init() third_party/grpc/src/core/lib/iomgr/iomgr.cc:66:3 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc_Ubase.so+0xae777) (BuildId: 3cb6b043bd10222927301e33a3760646) #35 grpc_init third_party/grpc/src/core/lib/surface/init.cc:144:5 (libST-a5842b3303c3_third_Uparty_Sgrpc_Sgoogle_Slibgrpc.so+0x4518) (BuildId: 778b43e2e8f8c132a7acf9b3da117fff) #36 k3::(anonymous namespace)::GrpcInitHackEnvironment::SetUp() storage/k3/grpc/grpc_server_test.cc:144:27 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x212d21) (BuildId: e468d94e410a7e13e19b26c4f7277674) #37 SetUpEnvironment third_party/googletest/googletest/src/gtest.cc:5763:55 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #38 for_each<std::__tsan::__wrap_iter<testing::Environment *const *>, void (*)(testing::Environment *)> third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__algorithm/for_each.h:26:5 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #39 ForEach<std::__tsan::vector<testing::Environment *, std::__tsan::allocator<testing::Environment *> >, void (*)(testing::Environment *)> third_party/googletest/googletest/src/gtest-internal-inl.h:288:3 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #40 testing::internal::UnitTestImpl::RunAllTests() third_party/googletest/googletest/src/gtest.cc:5876:9 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6f58b) #41 HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool> third_party/googletest/googletest/src/gtest.cc (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) (BuildId: ec51e8d56b1390e9939f663d4700c7da) #42 testing::UnitTest::Run() third_party/googletest/googletest/src/gtest.cc:5464:10 (libST-a5842b3303c3_third_Uparty_Sgoogletest_Slibgtest.so+0x6ee41) #43 RUN_ALL_TESTS third_party/googletest/googletest/include/gtest/gtest.h:2329:73 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) (BuildId: e468d94e410a7e13e19b26c4f7277674) #44 main testing/base/internal/gunit_main.cc:86:10 (c0da98875dfb74bd2cfcbd76306f382f2d05e1326f778b3a4cefdef1a42a75e7_020000b94930+0x2aa83a) SUMMARY: ThreadSanitizer: data race third_party/grpc/src/core/ext/filters/client_channel/client_channel.cc:2780:5 in grpc_core::ClientChannel::FilterBasedLoadBalancedCall::~FilterBasedLoadBalancedCall() ```
wanlin31
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May 18, 2023
…e server that immediatley closes the connection (#32499) Alongside #32496, this makes this test behave the same on all platforms. FWIW, I verified this causes us to see the previous lock cycle problem in #32491 on linux - originally that lock cycle was only on mac, because of environmental differences between mac and linux in CI.
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This fixes a very strange TSAN flake seen in an internal test (b/268292646), which seems to have been introduced in #32326.
I've included an example of the TSAN failure below, for future reference. I don't fully understand what is causing this failure. It looks like the async callback from a previous picker update caused the pick to be re-queued but then got stuck draining queued callbacks in its
ExecCtxinstance, while the async callback from the next picker update had already failed the call. But the part I don't understand is why the call combiner cancellation callback wound up scheduled on theExecCtxinstance from the first thread -- that seems likely to be caused by either theWorkSerializeror maybeExecCtxwork-stealing, but the exact details are likely to be hard to nail down.Switching from
EventEngine::Run()back toExecCtx::Run()seems to fix the flake, so that's what I'm doing in this PR. I find this work-around deeply dissatisfying, especially since I do not fully understand the root cause of the problem. However, given that we are working toward eliminating theFilterBasedLoadBalancedCallcode entirely as part of the promise conversion, this problem is probably not worth further investigation.