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Switched to new secure server API#2

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murgatroid99:php_new_secure_server_api
Mar 4, 2015
Merged

Switched to new secure server API#2
ctiller merged 1 commit intoctiller:creditfrom
murgatroid99:php_new_secure_server_api

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This closes #921. Don't worry about the tests; they already don't pass.

ctiller added a commit that referenced this pull request Mar 4, 2015
@ctiller ctiller merged commit 08d91de into ctiller:credit Mar 4, 2015
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…ning

Fixes for sending status from the server
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Updating to current master
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Regen projects and fix more uses of gpr_thd_new
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…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()
```
ctiller pushed a commit that referenced this pull request Mar 23, 2023
Long story here:

CallbackAlternativeCQ operates a thread pool which processes a
completion queue and then directly invokes the completion function in
the same thread. This thread pool is initialized on first Ref() and
unallocated on last Unref().

When running an in-process synchronous server (as we do for tests, using
this
https://github.com/google/tensorstore/blob/master/tensorstore/internal/grpc/grpc_mock.h),
called by an async() interface caller, if the async() callback happens
to drop the last reference to the grpc Channel, then the channel
shutdown will attempt to run in one of the the CallbackAlternativeCQ
threads.

This will cause a deadlock/race condition, as `CallbackAlternativeCQ` is
not designed to shutdown itself. When this deadlock happens,
`pthread_join(pthread_id_)` will return `EDEADLK` and the thread will
keep running. However `EDEADLK` is silently ignored by Join() so
`CallbackAlternativeCQ::Unref` will continue to delete the underlying
grpc_completion_queue, leading to a `SIGSEGV` later in the process.


https://github.com/grpc/grpc/blob/97ba9871324cb68b93f22fd1860934392cd476ee/src/cpp/common/completion_queue_cc.cc#L115

This adds an assert that pthread_join succeeded, which is useful as it
avoids a later SIGSEBV. Alternatively, the thread implementation could
gpr_log the errorcode before asserting.


Example backtrace of crash:

frame #0: 0x0000000194f1e868 libsystem_kernel.dylib`__pthread_kill + 8
frame #1: 0x0000000194f55cec libsystem_pthread.dylib`pthread_kill + 288
    frame #2: 0x0000000194e8e2c8 libsystem_c.dylib`abort + 180
    frame #3: 0x0000000194e8d620 libsystem_c.dylib`__assert_rtn + 272
frame #4: 0x0000000100a64f50 grpc_kvstore_test`grpc_core::(anonymous
namespace)::ThreadInternalsPosix::Join() + 188
frame #5: 0x00000001009c5dd0 grpc_kvstore_test`grpc_core::Thread::Join()
+ 56
frame #6: 0x0000000100154474 grpc_kvstore_test`grpc::(anonymous
namespace)::CallbackAlternativeCQ::Unref() + 216
frame #7: 0x0000000100154390
grpc_kvstore_test`grpc::CompletionQueue::ReleaseCallbackAlternativeCQ(grpc::CompletionQueue*)
+ 120
frame #8: 0x000000010014130c grpc_kvstore_test`grpc::Channel::~Channel()
+ 220
frame #9: 0x00000001001413c8 grpc_kvstore_test`grpc::Channel::~Channel()
+ 28
frame #10: 0x000000010014d678
grpc_kvstore_test`std::__1::default_delete<grpc::Channel>::operator()(grpc::Channel*)
const + 44
frame #11: 0x000000010014d358
grpc_kvstore_test`std::__1::__shared_ptr_pointer<grpc::Channel*,
std::__1::shared_ptr<grpc::Channel>::__shared_ptr_default_delete<grpc::Channel,
grpc::Channel>, std::__1::allocator<grpc::Channel> >::__on_zero_shared()
+ 72
frame #12: 0x000000010002ab5c
grpc_kvstore_test`std::__1::__shared_count::__release_shared() + 60
frame #13: 0x000000010002ab00
grpc_kvstore_test`std::__1::__shared_weak_count::__release_shared() + 28
frame #14: 0x000000010002aad0
grpc_kvstore_test`std::__1::shared_ptr<grpc::ServerCredentials>::~shared_ptr()
+ 56
frame #15: 0x00000001000053ec
grpc_kvstore_test`std::__1::shared_ptr<tensorstore_grpc::kvstore::grpc_gen::KvStoreService::Stub>::~shared_ptr()
+ 28
frame #16: 0x000000010014653c
grpc_kvstore_test`grpc::ClientContext::~ClientContext() + 356
frame #17: 0x0000000100146570
grpc_kvstore_test`grpc::ClientContext::~ClientContext() + 28
frame #18: 0x00000001000ab000 grpc_kvstore_test`tensorstore::(anonymous
namespace)::ReadTask::~ReadTask() + 68
frame #19: 0x00000001000aae90 grpc_kvstore_test`tensorstore::(anonymous
namespace)::ReadTask::~ReadTask() + 28
frame #20: 0x00000001000aae18
grpc_kvstore_test`tensorstore::internal::intrusive_ptr_decrement(tensorstore::internal::AtomicReferenceCount<tensorstore::(anonymous
namespace)::ReadTask> const*) + 68
frame #21: 0x00000001000aadc8 grpc_kvstore_test`void
tensorstore::internal::DefaultIntrusivePtrTraits::decrement<tensorstore::(anonymous
namespace)::ReadTask*>(tensorstore::(anonymous namespace)::ReadTask*) +
24
frame #22: 0x00000001000aad9c
grpc_kvstore_test`tensorstore::internal::IntrusivePtr<tensorstore::(anonymous
namespace)::ReadTask,
tensorstore::internal::DefaultIntrusivePtrTraits>::~IntrusivePtr() + 52
frame #23: 0x00000001000a5994
grpc_kvstore_test`tensorstore::internal::IntrusivePtr<tensorstore::(anonymous
namespace)::ReadTask,
tensorstore::internal::DefaultIntrusivePtrTraits>::~IntrusivePtr() + 28
frame #24: 0x00000001000aac24 grpc_kvstore_test`tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status)::~() + 40
frame #25: 0x00000001000a6280 grpc_kvstore_test`tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status)::~() + 28
frame #26: 0x00000001000a84ac
grpc_kvstore_test`std::__1::__compressed_pair_elem<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status), 0,
false>::~__compressed_pair_elem() + 28
frame #27: 0x00000001000a86c0
grpc_kvstore_test`std::__1::__compressed_pair<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status),
std::__1::allocator<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status)> >::~__compressed_pair() + 28
frame #28: 0x00000001000a8694
grpc_kvstore_test`std::__1::__compressed_pair<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status),
std::__1::allocator<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status)> >::~__compressed_pair() + 28
frame #29: 0x00000001000a990c
grpc_kvstore_test`std::__1::__function::__alloc_func<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status),
std::__1::allocator<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status)>, void (grpc::Status)>::destroy() +
24
frame #30: 0x00000001000a7ea0
grpc_kvstore_test`std::__1::__function::__func<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status),
std::__1::allocator<tensorstore::(anonymous
namespace)::ReadTask::Start(tensorstore_grpc::kvstore::grpc_gen::KvStoreService::StubInterface*,
absl::Time)::'lambda'(grpc::Status)>, void (grpc::Status)>::destroy() +
28
frame #31: 0x00000001000aabbc
grpc_kvstore_test`std::__1::__function::__value_func<void
(grpc::Status)>::~__value_func() + 68
frame #32: 0x00000001000aab68
grpc_kvstore_test`std::__1::__function::__value_func<void
(grpc::Status)>::~__value_func() + 28
frame #33: 0x00000001000aab3c grpc_kvstore_test`std::__1::function<void
(grpc::Status)>::~function() + 28
frame #34: 0x00000001000a6254 grpc_kvstore_test`std::__1::function<void
(grpc::Status)>::~function() + 28
frame #35: 0x0000000100108ae0
grpc_kvstore_test`grpc::internal::CallbackWithStatusTag::Run(bool) + 368
frame #36: 0x0000000100108964
grpc_kvstore_test`grpc::internal::CallbackWithStatusTag::StaticRun(grpc_completion_queue_functor*,
int) + 44
frame #37: 0x0000000100154cb0 grpc_kvstore_test`grpc::(anonymous
namespace)::CallbackAlternativeCQ::ThreadLoop(void*) + 356
frame #38: 0x0000000100a650b8 grpc_kvstore_test`grpc_core::(anonymous
namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void
(*)(void*), void*, bool*, grpc_core::Thread::Options
const&)::'lambda'(void*)::operator()(void*) const + 240
frame #39: 0x0000000100a64fbc grpc_kvstore_test`grpc_core::(anonymous
namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void
(*)(void*), void*, bool*, grpc_core::Thread::Options
const&)::'lambda'(void*)::__invoke(void*) + 28
frame #40: 0x0000000194f5606c libsystem_pthread.dylib`_pthread_start +
148
ctiller pushed a commit that referenced this pull request Apr 30, 2023
Found memory access error in frame_fuzzer_test. Located the root cause
in ExecCtx::Get(), where ExecCtx needs to be initialized before using
HPackParser:ParseInput().


Error logs:
MemorySanitizer:DEADLYSIGNAL
==2812845==ERROR: MemorySanitizer: SEGV on unknown address
0x000000000030 (pc 0x55869275574e bp 0x7fffd7d9fb50 sp 0x7fffd7d9fb20
T2812845)
==2812845==The signal is caused by a READ memory access.
==2812845==Hint: address points to the zero page.
#0 0x55869275574e in starting_cpu
[third_party/grpc/src/core/lib/iomgr/exec_ctx.h:129](https://cs.corp.google.com/piper///depot/google3/third_party/grpc/src/core/lib/iomgr/exec_ctx.h?l=129&ws=ladynana/2900&snapshot=42):9
#1 0x55869275574e in
grpc_core::PerCpu<grpc_core::GlobalStatsCollector::Data>::this_cpu()
[third_party/grpc/src/core/lib/gprpp/per_cpu.h:38](https://cs.corp.google.com/piper///depot/google3/third_party/grpc/src/core/lib/gprpp/per_cpu.h?l=38&ws=ladynana/2900&snapshot=42):48
#2 0x558692753cda in IncrementHttp2MetadataSize
[third_party/grpc/src/core/lib/debug/stats_data.h:265](https://cs.corp.google.com/piper///depot/google3/third_party/grpc/src/core/lib/debug/stats_data.h?l=265&ws=ladynana/2900&snapshot=42):11
#3 0x558692753cda in
grpc_core::HPackParser::ParseInput(grpc_core::HPackParser::Input, bool)
[third_party/grpc/src/core/ext/transport/chttp2/transport/hpack_parser.cc:933](https://cs.corp.google.com/piper///depot/google3/third_party/grpc/src/core/ext/transport/chttp2/transport/hpack_parser.cc?l=933&ws=ladynana/2900&snapshot=42):20


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ctiller pushed a commit that referenced this pull request Sep 20, 2023
grpc 1.57.0 crashes win ruby and alpine due to no `strdup` in musl libc.
This diff replace `strdup` with `grp_strdup`

```
Thread 1 "ruby" received signal SIGSEGV, Segmentation fault.
0x00000000000a4596 in ?? ()
(gdb) bt
#0  0x00000000000a4596 in ?? ()
#1  0x00007ffff14e298c in grpc_rb_channel_create_in_process_add_args_hash_cb (key=<optimized out>, val=<optimized out>, args_obj=<optimized out>) at rb_channel_args.c:84
#2  0x00007ffff7c2b9ea in hash_ar_foreach_iter (error=0, argp=140737488344784, value=<optimized out>, key=<optimized out>) at hash.c:1341
```

fixes grpc#34044
closes grpc#27995
ctiller pushed a commit that referenced this pull request May 29, 2024
grpc#36753 has this ASAN test failure with the following error which doesn't seem to make sense. ([full log](https://btx.cloud.google.com/invocations/a587e5cc-ca1e-46ed-a3c3-199c581583db/targets))

```
Executing tests from //test/cpp/util:grpc_tool_test@poller=epoll1
-----------------------------------------------------------------------------
=================================================================
==15==ERROR: AddressSanitizer: odr-violation (0x7fcfa2961400):
  [1] size=66 'typeinfo name for google::protobuf::compiler::java::ImmutableExtensionLiteGenerator' external/com_google_protobuf/src/google/protobuf/compiler/java/lite/extension.cc in /b/f/w/bazel-out/k8-fastbuild/bin/test/cpp/util/grpc_tool_test@poller=epoll1.runfiles/com_github_grpc_grpc/test/cpp/util/../../../_solib_k8/libexternal_Scom_Ugoogle_Uprotobuf_Ssrc_Sgoogle_Sprotobuf_Scompiler_Sjava_Slite_Sliblite.so
  [2] size=66 'typeinfo name for google::protobuf::compiler::java::ImmutableExtensionLiteGenerator' external/com_google_protobuf/src/google/protobuf/compiler/java/lite/extension.cc in /b/f/w/bazel-out/k8-fastbuild/bin/test/cpp/util/grpc_tool_test@poller=epoll1.runfiles/com_github_grpc_grpc/test/cpp/util/../../../_solib_k8/libexternal_Scom_Ugoogle_Uprotobuf_Ssrc_Sgoogle_Sprotobuf_Scompiler_Sjava_Slite_Slibfield_Ugenerators.so
These globals were registered at these points:
  [1]:
    #0 0x5626b4ea1488 in __asan_register_globals /tmp/clang-build/src/compiler-rt/lib/asan/asan_globals.cpp:369:3
    #1 0x5626b4ea2559 in __asan_register_elf_globals /tmp/clang-build/src/compiler-rt/lib/asan/asan_globals.cpp:352:3
    #2 0x7fcfa3fa4b99  (/lib64/ld-linux-x86-64.so.2+0x11b99) (BuildId: 7ae2aaae1a0e5b262df913ee0885582d2e327982)

  [2]:
    #0 0x5626b4ea1488 in __asan_register_globals /tmp/clang-build/src/compiler-rt/lib/asan/asan_globals.cpp:369:3
    #1 0x5626b4ea2559 in __asan_register_elf_globals /tmp/clang-build/src/compiler-rt/lib/asan/asan_globals.cpp:352:3
    #2 0x7fcfa3fa4b99  (/lib64/ld-linux-x86-64.so.2+0x11b99) (BuildId: 7ae2aaae1a0e5b262df913ee0885582d2e327982)

==15==HINT: if you don't care about these errors you may set ASAN_OPTIONS=detect_odr_violation=0
SUMMARY: AddressSanitizer: odr-violation: global 'typeinfo name for google::protobuf::compiler::java::ImmutableExtensionLiteGenerator' at external/com_google_protobuf/src/google/protobuf/compiler/java/lite/extension.cc in /b/f/w/bazel-out/k8-fastbuild/bin/test/cpp/util/grpc_tool_test@poller=epoll1.runfiles/com_github_grpc_grpc/test/cpp/util/../../../_solib_k8/libexternal_Scom_Ugoogle_Uprotobuf_Ssrc_Sgoogle_Sprotobuf_Scompiler_Sjava_Slite_Sliblite.so
==15==ABORTING
```

This turned out to be a known issue described at google/sanitizers#1017 and there is much to do other than disabling the ODR test. I gave a try to "-mllvm -asan-use-private-alias=1" option but it didn't change the result so I turned into this way.

Closes grpc#36756

COPYBARA_INTEGRATE_REVIEW=grpc#36756 from veblush:asan-workaround 622581e
PiperOrigin-RevId: 638421967
ctiller pushed a commit that referenced this pull request Aug 1, 2024
1.64.x doesn't build with gcc-9. This PR "fixes" it crashing at the
offending site. This is fine since this code is not used yet.

This is a strange one since we have CI tests with gcc-7 and gcc-12, but
gcc-9 has thrown errors. We are considering add builds for intermediate
versions, but we do not have infinite testing resources either, so it's
a bit of a balancing act.

```
Step #2: external/com_github_grpc_grpc/src/core/lib/surface/call.cc: In constructor 'grpc_core::{anonymous}::MaybeOpImpl<SetupFn>::MaybeOpImpl(grpc_core::{anonymous}::MaybeOpImpl<SetupFn>&&) [with SetupFn = grpc_core::ServerCallSpine::CommitBatch(const grpc_op*, size_t, void*, bool)::<lambda(const grpc_op&)>]':
Step #2: external/com_github_grpc_grpc/src/core/lib/surface/call.cc:3736:55: internal compiler error: in assign_temp, at function.c:982
Step #2:  3736 |       : state_(MoveState(other.state_)), op_(other.op_) {}
Step #2:       |                              
```
ctiller pushed a commit that referenced this pull request Oct 4, 2024
…haned (grpc#37683)

Sample race - https://btx.cloud.google.com/invocations/0c4e65f2-3a38-4b4f-b67e-c53a4a4650ea/targets/%2F%2Ftest%2Fcore%2Fend2end:connectivity_test@poller%3Dpoll;config=2aed862ff4fd4384687d63aa95df415c7cb955355c2ab6dc6c6d7a9d123a76ec/log

```
WARNING: ThreadSanitizer: data race (pid=18)
  Write of size 8 at 0x72300000c318 by thread T29:
    #0 grpc_core::Chttp2ServerListener* std::__exchange(grpc_core::Chttp2ServerListener*&, grpc_core::Chttp2ServerListener*&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/move.h:152:13 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x68c85)
    #1 grpc_core::Chttp2ServerListener* std::exchange(grpc_core::Chttp2ServerListener*&, grpc_core::Chttp2ServerListener*&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/utility:287:14 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x68c05)
    #2 grpc_core::RefCountedPtr::reset(grpc_core::Chttp2ServerListener*) /proc/self/cwd/./src/core/lib/gprpp/ref_counted_ptr.h:126:20 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x68b32)
    #3 grpc_core::RefCountedPtr::operator=(grpc_core::RefCountedPtr&&) /proc/self/cwd/./src/core/lib/gprpp/ref_counted_ptr.h:66:5 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x54380)
    #4 grpc_core::Chttp2ServerListener::ActiveConnection::Start(grpc_core::RefCountedPtr, std::unique_ptr, grpc_core::ChannelArgs const&) /proc/self/cwd/src/core/ext/transport/chttp2/server/chttp2_server.cc:615:13 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x48914)
    #5 grpc_core::Chttp2ServerListener::OnAccept(void*, grpc_endpoint*, grpc_pollset*, grpc_tcp_server_acceptor*) /proc/self/cwd/src/core/ext/transport/chttp2/server/chttp2_server.cc:881:21 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x49ce2)
    #6 CreateEventEngineListener(grpc_tcp_server*, grpc_closure*, grpc_event_engine::experimental::EndpointConfig const&, grpc_tcp_server**)::$_2::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const /proc/self/cwd/src/core/lib/iomgr/tcp_server_posix.cc:228:11 (liblibiomgr.so+0xef627)
    #7 decltype(std::declval()(std::declval>>(), std::declval())) absl::lts_20240116::base_internal::Callable::Invoke>, grpc_event_engine::experimental::MemoryAllocator>(CreateEventEngineListener(grpc_tcp_server*, grpc_closure*, grpc_event_engine::experimental::EndpointConfig const&, grpc_tcp_server**)::$_2&, std::unique_ptr>&&, grpc_event_engine::experimental::MemoryAllocator&&) /proc/self/cwd/external/com_google_absl/absl/base/internal/invoke.h:185:12 (liblibiomgr.so+0xef3c2)
    #8 decltype(Invoker>, grpc_event_engine::experimental::MemoryAllocator>::type::Invoke(std::declval(), std::declval>>(), std::declval())) absl::lts_20240116::base_internal::invoke>, grpc_event_engine::experimental::MemoryAllocator>(CreateEventEngineListener(grpc_tcp_server*, grpc_closure*, grpc_event_engine::experimental::EndpointConfig const&, grpc_tcp_server**)::$_2&, std::unique_ptr>&&, grpc_event_engine::experimental::MemoryAllocator&&) /proc/self/cwd/external/com_google_absl/absl/base/internal/invoke.h:212:10 (liblibiomgr.so+0xef325)
    #9 void absl::lts_20240116::internal_any_invocable::InvokeR>, grpc_event_engine::experimental::MemoryAllocator, void>(CreateEventEngineListener(grpc_tcp_server*, grpc_closure*, grpc_event_engine::experimental::EndpointConfig const&, grpc_tcp_server**)::$_2&, std::unique_ptr>&&, grpc_event_engine::experimental::MemoryAllocator&&) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:132:3 (liblibiomgr.so+0xef2b5)
    #10 void absl::lts_20240116::internal_any_invocable::LocalInvoker>, grpc_event_engine::experimental::MemoryAllocator>(absl::lts_20240116::internal_any_invocable::TypeErasedState*, absl::lts_20240116::internal_any_invocable::ForwardedParameter>>::type, absl::lts_20240116::internal_any_invocable::ForwardedParameter::type) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:310:10 (liblibiomgr.so+0xef1e2)
    #11 absl::lts_20240116::internal_any_invocable::Impl>, grpc_event_engine::experimental::MemoryAllocator)>::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:868:1 (libsrc_Score_Slibposix_Uevent_Uengine.so+0xa754f)
    #12 grpc_event_engine::experimental::ThreadyEventEngine::CreateListener(absl::lts_20240116::AnyInvocable>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()::operator()() /proc/self/cwd/src/core/lib/event_engine/thready_event_engine/thready_event_engine.cc:61:15 (libsrc_Score_Slibthready_Uevent_Uengine.so+0x27cdb)
    #13 decltype(std::declval>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&>()()) absl::lts_20240116::base_internal::Callable::Invoke>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&>(grpc_event_engine::experimental::ThreadyEventEngine::CreateListener(absl::lts_20240116::AnyInvocable>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&) /proc/self/cwd/external/com_google_absl/absl/base/internal/invoke.h:185:12 (libsrc_Score_Slibthready_Uevent_Uengine.so+0x27c45)
    #14 decltype(Invoker>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&>::type::Invoke(std::declval>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&>())) absl::lts_20240116::base_internal::invoke>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&>(grpc_event_engine::experimental::ThreadyEventEngine::CreateListener(absl::lts_20240116::AnyInvocable>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&) /proc/self/cwd/external/com_google_absl/absl/base/internal/invoke.h:212:10 (libsrc_Score_Slibthready_Uevent_Uengine.so+0x27bf5)
    #15 void absl::lts_20240116::internal_any_invocable::InvokeR>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&, void>(grpc_event_engine::experimental::ThreadyEventEngine::CreateListener(absl::lts_20240116::AnyInvocable>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:132:3 (libsrc_Score_Slibthready_Uevent_Uengine.so+0x27ba5)
    #16 void absl::lts_20240116::internal_any_invocable::RemoteInvoker>, grpc_event_engine::experimental::MemoryAllocator)>, absl::lts_20240116::AnyInvocable, grpc_event_engine::experimental::EndpointConfig const&, std::unique_ptr>)::$_0::operator()(std::unique_ptr>, grpc_event_engine::experimental::MemoryAllocator) const::'lambda'()&>(absl::lts_20240116::internal_any_invocable::TypeErasedState*) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:368:10 (libsrc_Score_Slibthready_Uevent_Uengine.so+0x279cd)
    #17 absl::lts_20240116::internal_any_invocable::Impl::operator()() /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:868:1 (libtest_Score_Send2end_Slibconnectivity_Ulibrary.so+0x337ff)
    #18 grpc_core::Thread::Thread(char const*, absl::lts_20240116::AnyInvocable, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::operator()(void*) const /proc/self/cwd/./src/core/lib/gprpp/thd.h:108:15 (libsrc_Score_Slibthready_Uevent_Uengine.so+0x2e264)
    #19 grpc_core::Thread::Thread(char const*, absl::lts_20240116::AnyInvocable, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) /proc/self/cwd/./src/core/lib/gprpp/thd.h:105:13 (libsrc_Score_Slibthready_Uevent_Uengine.so+0x2e1e9)
    #20 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::operator()(void*) const /proc/self/cwd/src/core/lib/gprpp/posix/thd.cc:148:11 (liblibgpr.so+0x1d830)
    #21 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) /proc/self/cwd/src/core/lib/gprpp/posix/thd.cc:118:9 (liblibgpr.so+0x1d659)

  Previous read of size 8 at 0x72300000c318 by main thread:
    #0 grpc_core::RefCountedPtr::operator!=(std::nullptr_t) const /proc/self/cwd/./src/core/lib/gprpp/ref_counted_ptr.h:192:50 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x52345)
    #1 grpc_core::Chttp2ServerListener::ActiveConnection::HandshakingState::~HandshakingState() /proc/self/cwd/src/core/ext/transport/chttp2/server/chttp2_server.cc:394:30 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x463ed)
    #2 std::enable_if::value, grpc_core::Chttp2ServerListener::ActiveConnection::HandshakingState*>::type grpc_event_engine::experimental::MemoryAllocator::New, grpc_pollset*&, std::unique_ptr, grpc_core::ChannelArgs const&>(grpc_core::RefCountedPtr&&, grpc_pollset*&, std::unique_ptr&&, grpc_core::ChannelArgs const&)::Wrapper::~Wrapper() /proc/self/cwd/include/grpc/event_engine/memory_allocator.h:117:65 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x67a1c)
    #3 std::enable_if::value, grpc_core::Chttp2ServerListener::ActiveConnection::HandshakingState*>::type grpc_event_engine::experimental::MemoryAllocator::New, grpc_pollset*&, std::unique_ptr, grpc_core::ChannelArgs const&>(grpc_core::RefCountedPtr&&, grpc_pollset*&, std::unique_ptr&&, grpc_core::ChannelArgs const&)::Wrapper::~Wrapper() /proc/self/cwd/include/grpc/event_engine/memory_allocator.h:117:27 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x67a59)
    #4 void grpc_core::UnrefDelete::operator()(grpc_core::Chttp2ServerListener::ActiveConnection::HandshakingState*) const /proc/self/cwd/./src/core/lib/gprpp/ref_counted.h:224:5 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x6449d)
    #5 grpc_core::InternallyRefCounted::Unref() /proc/self/cwd/./src/core/lib/gprpp/orphanable.h:132:7 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x52581)
    #6 grpc_core::Chttp2ServerListener::ActiveConnection::HandshakingState::Orphan() /proc/self/cwd/src/core/ext/transport/chttp2/server/chttp2_server.cc:407:3 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x466ac)
    #7 void grpc_core::OrphanableDelete::operator()(grpc_core::Chttp2ServerListener::ActiveConnection::HandshakingState*) /proc/self/cwd/./src/core/lib/gprpp/orphanable.h:60:8 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x653b1)
    #8 std::unique_ptr::~unique_ptr() /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/unique_ptr.h:292:4 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x53ddf)
    #9 grpc_core::Chttp2ServerListener::ActiveConnection::Orphan() /proc/self/cwd/src/core/ext/transport/chttp2/server/chttp2_server.cc:581:1 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x487db)
    #10 void grpc_core::OrphanableDelete::operator()(grpc_core::Chttp2ServerListener::ActiveConnection*) /proc/self/cwd/./src/core/lib/gprpp/orphanable.h:60:8 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x66b01)
    #11 std::unique_ptr::~unique_ptr() /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/unique_ptr.h:292:4 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x53d1f)
    #12 std::pair>::~pair() /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_pair.h:208:12 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x597f9)
    #13 void __gnu_cxx::new_allocator>>>::destroy>>(std::pair>*) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/ext/new_allocator.h:152:10 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x597c1)
    #14 void std::allocator_traits>>>>::destroy>>(std::allocator>>>&, std::pair>*) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/alloc_traits.h:496:8 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x59725)
    #15 std::_Rb_tree>, std::_Select1st>>, std::less, std::allocator>>>::_M_destroy_node(std::_Rb_tree_node>>*) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_tree.h:642:2 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x59674)
    #16 std::_Rb_tree>, std::_Select1st>>, std::less, std::allocator>>>::_M_drop_node(std::_Rb_tree_node>>*) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_tree.h:650:2 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x595f9)
    #17 std::_Rb_tree>, std::_Select1st>>, std::less, std::allocator>>>::_M_erase(std::_Rb_tree_node>>*) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_tree.h:1920:4 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x5945f)
    #18 std::_Rb_tree>, std::_Select1st>>, std::less, std::allocator>>>::~_Rb_tree() /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_tree.h:1000:9 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x593c5)
    #19 std::map, std::less, std::allocator>>>::~map() /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_map.h:300:22 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x51525)
    #20 grpc_core::Chttp2ServerListener::Orphan() /proc/self/cwd/src/core/ext/transport/chttp2/server/chttp2_server.cc:923:1 (libsrc_Score_Slibgrpc_Utransport_Uchttp2_Userver.so+0x4b5dd)
    #21 void grpc_core::OrphanableDelete::operator()(grpc_core::Server::ListenerInterface*) /proc/self/cwd/./src/core/lib/gprpp/orphanable.h:60:8 (libsrc_Score_Slibchaotic_Ugood_Userver.so+0x1d0981)
    #22 std::unique_ptr::reset(grpc_core::Server::ListenerInterface*) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/unique_ptr.h:402:4 (liblibserver.so+0x1d5c21)
    #23 grpc_core::Server::StopListening() /proc/self/cwd/src/core/server/server.cc:1211:23 (liblibserver.so+0x1b9c62)
    #24 grpc_core::Server::ShutdownAndNotify(grpc_completion_queue*, void*) /proc/self/cwd/src/core/server/server.cc:1195:3 (liblibserver.so+0x1b97da)
    #25 grpc_server_shutdown_and_notify /proc/self/cwd/src/core/server/server.cc:1829:37 (liblibserver.so+0x1bf212)
    #26 grpc_core::CoreEnd2endTest::ShutdownServerAndNotify(int) /proc/self/cwd/./test/core/end2end/end2end_tests.h:459:5 (libtest_Score_Send2end_Slibconnectivity_Ulibrary.so+0x33370)
    #27 grpc_core::(anonymous namespace)::CoreEnd2endTest_RetryHttp2Test_ConnectivityWatch::RunTest() /proc/self/cwd/test/core/end2end/tests/connectivity.cc:74:3 (libtest_Score_Send2end_Slibconnectivity_Ulibrary.so+0x2ee8d)
    #28 grpc_core::(anonymous namespace)::CoreEnd2endTest_RetryHttp2Test_ConnectivityWatch::TestBody() /proc/self/cwd/test/core/end2end/tests/connectivity.cc:32:1 (libtest_Score_Send2end_Slibconnectivity_Ulibrary.so+0x2dc96)
    #29 void testing::internal::HandleSehExceptionsInMethodIfSupported(testing::Test*, void (testing::Test::*)(), char const*) /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:2612:10 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x16d2dc)
    #30 void testing::internal::HandleExceptionsInMethodIfSupported(testing::Test*, void (testing::Test::*)(), char const*) /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:2648:14 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x14a51d)
    #31 testing::Test::Run() /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:2687:5 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x120458)
    #32 testing::TestInfo::Run() /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:2836:11 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x1215f3)
    #33 testing::TestSuite::Run() /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:3015:30 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x12230c)
    #34 testing::internal::UnitTestImpl::RunAllTests() /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:5921:44 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x138142)
    #35 bool testing::internal::HandleSehExceptionsInMethodIfSupported(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:2612:10 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x17508f)
    #36 bool testing::internal::HandleExceptionsInMethodIfSupported(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:2648:14 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x14e5b3)
    #37 testing::UnitTest::Run() /proc/self/cwd/external/com_google_googletest/googletest/src/gtest.cc:5485:10 (libexternal_Scom_Ugoogle_Ugoogletest_Slibgtest.so+0x13795b)
    #38 RUN_ALL_TESTS() /proc/self/cwd/external/com_google_googletest/googletest/include/gtest/gtest.h:2316:73 (libtest_Score_Send2end_Slibend2end_Utest_Umain.so+0x8457)
    #39 main /proc/self/cwd/test/core/end2end/end2end_test_main.cc:50:10 (libtest_Score_Send2end_Slibend2end_Utest_Umain.so+0x77b6)
```

We start the connection outside the critical region and that's where we supply the listener ref to the connection. There is a freak case where the connection can be orphaned due to the listener stopping to serve and the `Orphan()` would also be trying to access the listener ref resulting in a race.

Closes grpc#37683

COPYBARA_INTEGRATE_REVIEW=grpc#37683 from yashykt:FixChttp2ServerRace e3c4529
PiperOrigin-RevId: 681552145
ctiller pushed a commit that referenced this pull request Mar 27, 2025
Remove tcp_tracer in chttp2_transport since it's unused and buggy.

Fix for TSAN failure (similar to grpc#38728)  -
https://btx.cloud.google.com/invocations/97eb07c8-cf0c-4c26-a0c4-e7417adb1f23/targets/%2F%2Ftest%2Fcpp%2Fext%2Fotel:otel_tracing_test@poller%3Dpoll;config=1a7b8f82b5a4a85323c9dfbac159b038ad684a9dcca8ab0ce8fe99aa87dd2da2/log

```
WARNING: ThreadSanitizer: data race (pid=15)
  Read of size 8 at 0x726c00001588 by thread T44:
    #0 GetContext /proc/self/cwd/./src/core/lib/resource_quota/arena.h:296:9 (liblibgrpc_Utransport_Uchttp2.so+0x30af6e)
    #1 (anonymous namespace)::TcpTracerIfSampled(grpc_chttp2_stream*) /proc/self/cwd/src/core/ext/transport/chttp2/transport/chttp2_transport.cc:243:17 (liblibgrpc_Utransport_Uchttp2.so+0x30af6e)
    #2 perform_stream_op_locked(void*, absl::lts_20240722::Status) /proc/self/cwd/src/core/ext/transport/chttp2/transport/chttp2_transport.cc:1655:19 (liblibgrpc_Utransport_Uchttp2.so+0x3014aa)
    #3 grpc_combiner_continue_exec_ctx() /proc/self/cwd/src/core/lib/iomgr/combiner.cc:216:5 (liblibexec_Uctx.so+0x10d7e)
    #4 grpc_core::ExecCtx::Flush() /proc/self/cwd/src/core/lib/iomgr/exec_ctx.cc:77:17 (liblibexec_Uctx.so+0x16e45)
    #5 queue_offload(grpc_core::Combiner*)::$_0::operator()() const /proc/self/cwd/src/core/lib/iomgr/combiner.cc:165:14 (liblibexec_Uctx.so+0x13092)
    #6 void std::__invoke_impl(std::__invoke_other, queue_offload(grpc_core::Combiner*)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:60:14 (liblibexec_Uctx.so+0x13005)
    #7 std::__invoke_result::type std::__invoke(queue_offload(grpc_core::Combiner*)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:95:14 (liblibexec_Uctx.so+0x12fb5)
    #8 std::invoke_result::type std::invoke(queue_offload(grpc_core::Combiner*)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/functional:81:14 (liblibexec_Uctx.so+0x12f65)
    #9 void absl::lts_20240722::internal_any_invocable::InvokeR(queue_offload(grpc_core::Combiner*)::$_0&) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:132:3 (liblibexec_Uctx.so+0x12f05)
    #10 void absl::lts_20240722::internal_any_invocable::LocalInvoker(absl::lts_20240722::internal_any_invocable::TypeErasedState*) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:310:10 (liblibexec_Uctx.so+0x12e22)
    #11 absl::lts_20240722::internal_any_invocable::Impl::operator()() /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:868:1 (libsrc_Score_Slibping_Ucallbacks.so+0x260bf)
    #12 grpc_event_engine::experimental::SelfDeletingClosure::Run() /proc/self/cwd/./src/core/lib/event_engine/common_closures.h:54:5 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x501bd)
    #13 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:524:14 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4a949)
    #14 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:487:10 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4a013)
    #15 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::operator()(void*) const /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:257:17 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4b489)
    #16 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:255:7 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4b429)
    #17 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::operator()(void*) const /proc/self/cwd/src/core/util/posix/thd.cc:145:11 (liblibgpr.so+0x1c2e0)
    #18 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) /proc/self/cwd/src/core/util/posix/thd.cc:115:9 (liblibgpr.so+0x1c109)

  Previous write of size 8 at 0x726c00001588 by thread T47:
    #0 void grpc_core::Arena::SetContext(grpc_core::CallTracerInterface*) /proc/self/cwd/./src/core/lib/resource_quota/arena.h:305:10 (liblibgrpc_Uclient_Uchannel.so+0x5ac294)
    #1 grpc_core::(anonymous namespace)::CreateCallAttemptTracer(grpc_core::Arena*, bool) /proc/self/cwd/src/core/client_channel/client_channel_filter.cc:2388:10 (liblibgrpc_Uclient_Uchannel.so+0x58403c)
    #2 grpc_core::ClientChannelFilter::LoadBalancedCall::LoadBalancedCall(grpc_core::ClientChannelFilter*, grpc_core::Arena*, absl::lts_20240722::AnyInvocable, bool) /proc/self/cwd/src/core/client_channel/client_channel_filter.cc:2402:11 (liblibgrpc_Uclient_Uchannel.so+0x583a98)
    #3 grpc_core::ClientChannelFilter::FilterBasedLoadBalancedCall::FilterBasedLoadBalancedCall(grpc_core::ClientChannelFilter*, grpc_call_element_args const&, grpc_polling_entity*, grpc_closure*, absl::lts_20240722::AnyInvocable, bool) /proc/self/cwd/src/core/client_channel/client_channel_filter.cc:2628:7 (liblibgrpc_Uclient_Uchannel.so+0x5864d4)
    #4 grpc_core::ClientChannelFilter::FilterBasedLoadBalancedCall* grpc_core::Arena::New, bool&>(grpc_core::ClientChannelFilter*&&, grpc_call_element_args const&, grpc_polling_entity*&, grpc_closure*&, absl::lts_20240722::AnyInvocable&&, bool&) /proc/self/cwd/./src/core/lib/resource_quota/arena.h:181:13 (liblibgrpc_Uclient_Uchannel.so+0x59459d)
    #5 grpc_core::ClientChannelFilter::CreateLoadBalancedCall(grpc_call_element_args const&, grpc_polling_entity*, grpc_closure*, absl::lts_20240722::AnyInvocable, bool) /proc/self/cwd/src/core/client_channel/client_channel_filter.cc:1142:19 (liblibgrpc_Uclient_Uchannel.so+0x578343)
    #6 grpc_core::RetryFilter::LegacyCallData::CreateLoadBalancedCall(absl::lts_20240722::AnyInvocable, bool) /proc/self/cwd/src/core/client_channel/retry_filter_legacy_call_data.cc:1635:36 (liblibgrpc_Uclient_Uchannel.so+0x5f3954)
    #7 grpc_core::RetryFilter::LegacyCallData::CallAttempt::CallAttempt(grpc_core::RetryFilter::LegacyCallData*, bool) /proc/self/cwd/src/core/client_channel/retry_filter_legacy_call_data.cc:129:21 (liblibgrpc_Uclient_Uchannel.so+0x5f2de1)
    #8 grpc_core::RefCountedPtr grpc_core::MakeRefCounted(grpc_core::RetryFilter::LegacyCallData*&&, bool&) /proc/self/cwd/./src/core/util/ref_counted_ptr.h:369:31 (liblibgrpc_Uclient_Uchannel.so+0x60ad6a)
    #9 grpc_core::RetryFilter::LegacyCallData::CreateCallAttempt(bool) /proc/self/cwd/src/core/client_channel/retry_filter_legacy_call_data.cc:1644:19 (liblibgrpc_Uclient_Uchannel.so+0x605a9b)
    #10 grpc_core::RetryFilter::LegacyCallData::StartTransparentRetry(void*, absl::lts_20240722::Status) /proc/self/cwd/src/core/client_channel/retry_filter_legacy_call_data.cc:1937:12 (liblibgrpc_Uclient_Uchannel.so+0x60600b)
    #11 exec_ctx_run(grpc_closure*) /proc/self/cwd/src/core/lib/iomgr/exec_ctx.cc:43:3 (liblibexec_Uctx.so+0x17536)
    #12 grpc_core::ExecCtx::Flush() /proc/self/cwd/src/core/lib/iomgr/exec_ctx.cc:74:9 (liblibexec_Uctx.so+0x16e29)
    #13 grpc_core::ExecCtx::~ExecCtx() /proc/self/cwd/./src/core/lib/iomgr/exec_ctx.h:137:5 (liblibgrpc++_Ubase.so+0x1647cc)
    #14 grpc_core::WorkSerializer::WorkSerializerImpl::Run() /proc/self/cwd/src/core/util/work_serializer.cc:221:1 (liblibwork_Userializer.so+0x15947)
    #15 non-virtual thunk to grpc_core::WorkSerializer::WorkSerializerImpl::Run() /proc/self/cwd/src/core/util/work_serializer.cc (liblibwork_Userializer.so+0x15b09)
    #16 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:524:14 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4a949)
    #17 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:487:10 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4a013)
    #18 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::operator()(void*) const /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:257:17 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4b489)
    #19 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:255:7 (libsrc_Score_Slibevent_Uengine_Uthread_Upool.so+0x4b429)
    #20 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::operator()(void*) const /proc/self/cwd/src/core/util/posix/thd.cc:145:11 (liblibgpr.so+0x1c2e0)
    #21 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) /proc/self/cwd/src/core/util/posix/thd.cc:115:9 (liblibgpr.so+0x1c109)
```

Assumed sequence of events (based on stacktrace) -
* The client application creates a new RPC.
* A ClientChannelFilter::LoadBalancedCall is created for the first attempt.
* A CallAttemptTracer is created for this first attempt and a pointer to this is saved on the arena context.
* The first attempt fails without any bytes having been sent on the wire, making this RPC eligible for transparent retries.
* A new ClientChannelFilter::LoadBalancedCall created for this new attempt.
* A new CallAttemptTracer is created for this second (transparent) attempt and a pointer is saved on the arena context.
* Around the same time as a new CallAttemptTracer is created, the chttp2 transport is performing some operations for the first stream (for example, a cancel op).

Closes grpc#39015

COPYBARA_INTEGRATE_REVIEW=grpc#39015 from yashykt:FixTcpTracer 7e3746e
PiperOrigin-RevId: 739343300
ctiller pushed a commit that referenced this pull request Jun 10, 2025
This fixes a bug introduced in grpc#39736 whereby the LRS server may call `StartWrite()` after cancellation has already called `Finish()`, thus leading to a TSAN failure.

This is arguably a deficiency in the callback API.  The write should definitely fail, but it shouldn't cause a TSAN problem.  But we can consider that as part of a separate effort.

Example stack trace of the TSAN failure:

```
WARNING: ThreadSanitizer: data race (pid=17)
  Read of size 1 at 0x72680002dd80 by thread T5:
    #0 grpc::internal::CallbackBidiHandler::ServerCallbackReaderWriterImpl::Finish(grpc::Status) /proc/self/cwd/include/grpcpp/impl/server_callback_handlers.h:742:18 (xds_cluster_end2end_test@poller=epoll1+0x32896b2)
    #1 grpc::ServerBidiReactor::Finish(grpc::Status) /proc/self/cwd/include/grpcpp/support/server_callback.h:414:13 (xds_cluster_end2end_test@poller=epoll1+0x328dbb4)
    #2 grpc::testing::LrsServiceImpl::Reactor::OnCancel() /proc/self/cwd/test/cpp/end2end/xds/xds_server.cc:494:3 (xds_cluster_end2end_test@poller=epoll1+0x32c6ec1)
    #3 grpc::internal::ServerCallbackCall::CallOnCancel(grpc::internal::ServerReactor*)::$_0::operator()() const /proc/self/cwd/src/cpp/server/server_callback.cc:38:14 (xds_cluster_end2end_test@poller=epoll1+0x3b4755b)
    #4 void std::__invoke_impl(std::__invoke_other, grpc::internal::ServerCallbackCall::CallOnCancel(grpc::internal::ServerReactor*)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:60:14 (xds_cluster_end2end_test@poller=epoll1+0x3b474d5)
    #5 std::__invoke_result::type std::__invoke(grpc::internal::ServerCallbackCall::CallOnCancel(grpc::internal::ServerReactor*)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:95:14 (xds_cluster_end2end_test@poller=epoll1+0x3b47485)
    #6 std::invoke_result::type std::invoke(grpc::internal::ServerCallbackCall::CallOnCancel(grpc::internal::ServerReactor*)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/functional:81:14 (xds_cluster_end2end_test@poller=epoll1+0x3b47435)
    #7 void absl::lts_20250127::internal_any_invocable::InvokeR(grpc::internal::ServerCallbackCall::CallOnCancel(grpc::internal::ServerReactor*)::$_0&) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:132:3 (xds_cluster_end2end_test@poller=epoll1+0x3b473d5)
    #8 void absl::lts_20250127::internal_any_invocable::LocalInvoker(absl::lts_20250127::internal_any_invocable::TypeErasedState*) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:310:10 (xds_cluster_end2end_test@poller=epoll1+0x3b472f2)
    #9 absl::lts_20250127::internal_any_invocable::Impl::operator()() /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:868:1 (xds_cluster_end2end_test@poller=epoll1+0x4aa14ef)
    #10 grpc_event_engine::experimental::SelfDeletingClosure::Run() /proc/self/cwd/./src/core/lib/event_engine/common_closures.h:54:5 (xds_cluster_end2end_test@poller=epoll1+0x56a78ad)
    #11 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:552:14 (xds_cluster_end2end_test@poller=epoll1+0x56a4663)
    #12 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:515:10 (xds_cluster_end2end_test@poller=epoll1+0x56a3d47)
    #13 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::operator()(void*) const /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:277:17 (xds_cluster_end2end_test@poller=epoll1+0x56a5049)
    #14 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:275:7 (xds_cluster_end2end_test@poller=epoll1+0x56a4fe9)
    #15 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::operator()(void*) const /proc/self/cwd/src/core/util/posix/thd.cc:145:11 (xds_cluster_end2end_test@poller=epoll1+0x58479f0)
    #16 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) /proc/self/cwd/src/core/util/posix/thd.cc:115:9 (xds_cluster_end2end_test@poller=epoll1+0x5847819)

  Previous write of size 1 at 0x72680002dd80 by thread T4:
    #0 grpc::internal::CallbackBidiHandler::ServerCallbackReaderWriterImpl::Write(envoy::service::load_stats::v3::LoadStatsResponse const*, grpc::WriteOptions) /proc/self/cwd/include/grpcpp/impl/server_callback_handlers.h:790:38 (xds_cluster_end2end_test@poller=epoll1+0x3289e85)
    #1 grpc::ServerBidiReactor::StartWrite(envoy::service::load_stats::v3::LoadStatsResponse const*, grpc::WriteOptions) /proc/self/cwd/include/grpcpp/support/server_callback.h:350:13 (xds_cluster_end2end_test@poller=epoll1+0x32ef139)
    #2 grpc::ServerBidiReactor::StartWrite(envoy::service::load_stats::v3::LoadStatsResponse const*) /proc/self/cwd/include/grpcpp/support/server_callback.h:328:5 (xds_cluster_end2end_test@poller=epoll1+0x32cb6df)
    #3 grpc::testing::LrsServiceImpl::Reactor::OnReadDone(bool) /proc/self/cwd/test/cpp/end2end/xds/xds_server.cc:461:5 (xds_cluster_end2end_test@poller=epoll1+0x32c6535)
    #4 grpc::internal::CallbackBidiHandler::ServerCallbackReaderWriterImpl::SetupReactor(grpc::ServerBidiReactor*)::'lambda0'(bool)::operator()(bool) const /proc/self/cwd/include/grpcpp/impl/server_callback_handlers.h:839:22 (xds_cluster_end2end_test@poller=epoll1+0x328f196)
    #5 std::_Function_handler::ServerCallbackReaderWriterImpl::SetupReactor(grpc::ServerBidiReactor*)::'lambda0'(bool)>::_M_invoke(std::_Any_data const&, bool&&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:300:2 (xds_cluster_end2end_test@poller=epoll1+0x328ef1a)
    #6 std::function::operator()(bool) const /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/std_function.h:688:14 (xds_cluster_end2end_test@poller=epoll1+0x3279bb8)
    #7 grpc::internal::CallbackWithSuccessTag::Run(bool)::'lambda'()::operator()() const /proc/self/cwd/include/grpcpp/support/callback_common.h:230:11 (xds_cluster_end2end_test@poller=epoll1+0x3279ae5)
    #8 void std::__invoke_impl(std::__invoke_other, grpc::internal::CallbackWithSuccessTag::Run(bool)::'lambda'() const&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:60:14 (xds_cluster_end2end_test@poller=epoll1+0x3279a65)
    #9 std::__invoke_result::type std::__invoke(grpc::internal::CallbackWithSuccessTag::Run(bool)::'lambda'() const&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:95:14 (xds_cluster_end2end_test@poller=epoll1+0x3279a15)
    #10 std::invoke_result::type std::invoke(grpc::internal::CallbackWithSuccessTag::Run(bool)::'lambda'() const&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/functional:81:14 (xds_cluster_end2end_test@poller=epoll1+0x32799c5)
    #11 void absl::lts_20250127::functional_internal::InvokeObject(absl::lts_20250127::functional_internal::VoidPtr) /proc/self/cwd/external/com_google_absl/absl/functional/internal/function_ref.h:78:7 (xds_cluster_end2end_test@poller=epoll1+0x327996d)
    #12 absl::lts_20250127::FunctionRef::operator()() const /proc/self/cwd/external/com_google_absl/absl/functional/function_ref.h:132:12 (xds_cluster_end2end_test@poller=epoll1+0x3bd0221)
    #13 void grpc::GlobalCallbackHook::CatchingCallback&>(absl::lts_20250127::FunctionRef&) /proc/self/cwd/include/grpcpp/support/global_callback_hook.h:41:5 (xds_cluster_end2end_test@poller=epoll1+0x3bd01a1)
    #14 grpc::DefaultGlobalCallbackHook::RunCallback(grpc_call*, absl::lts_20250127::FunctionRef) /proc/self/cwd/include/grpcpp/support/global_callback_hook.h:50:5 (xds_cluster_end2end_test@poller=epoll1+0x3bd011d)
    #15 grpc::internal::CallbackWithSuccessTag::Run(bool) /proc/self/cwd/include/grpcpp/support/callback_common.h:227:32 (xds_cluster_end2end_test@poller=epoll1+0x3279715)
    #16 grpc::internal::CallbackWithSuccessTag::StaticRun(grpc_completion_queue_functor*, int) /proc/self/cwd/include/grpcpp/support/callback_common.h:212:47 (xds_cluster_end2end_test@poller=epoll1+0x3279329)
    #17 cq_end_op_for_callback(grpc_completion_queue*, void*, absl::lts_20250127::Status, void (*)(void*, grpc_cq_completion*), void*, grpc_cq_completion*, bool)::$_0::operator()() const /proc/self/cwd/src/core/lib/surface/completion_queue.cc:913:9 (xds_cluster_end2end_test@poller=epoll1+0x545e2e3)
    #18 void std::__invoke_impl(std::__invoke_other, cq_end_op_for_callback(grpc_completion_queue*, void*, absl::lts_20250127::Status, void (*)(void*, grpc_cq_completion*), void*, grpc_cq_completion*, bool)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:60:14 (xds_cluster_end2end_test@poller=epoll1+0x545e205)
    #19 std::__invoke_result::type std::__invoke(cq_end_op_for_callback(grpc_completion_queue*, void*, absl::lts_20250127::Status, void (*)(void*, grpc_cq_completion*), void*, grpc_cq_completion*, bool)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/invoke.h:95:14 (xds_cluster_end2end_test@poller=epoll1+0x545e1b5)
    #20 std::invoke_result::type std::invoke(cq_end_op_for_callback(grpc_completion_queue*, void*, absl::lts_20250127::Status, void (*)(void*, grpc_cq_completion*), void*, grpc_cq_completion*, bool)::$_0&) /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/functional:81:14 (xds_cluster_end2end_test@poller=epoll1+0x545e165)
    #21 void absl::lts_20250127::internal_any_invocable::InvokeR(cq_end_op_for_callback(grpc_completion_queue*, void*, absl::lts_20250127::Status, void (*)(void*, grpc_cq_completion*), void*, grpc_cq_completion*, bool)::$_0&) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:132:3 (xds_cluster_end2end_test@poller=epoll1+0x545e115)
    #22 void absl::lts_20250127::internal_any_invocable::RemoteInvoker(absl::lts_20250127::internal_any_invocable::TypeErasedState*) /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:368:10 (xds_cluster_end2end_test@poller=epoll1+0x545df6d)
    #23 absl::lts_20250127::internal_any_invocable::Impl::operator()() /proc/self/cwd/external/com_google_absl/absl/functional/internal/any_invocable.h:868:1 (xds_cluster_end2end_test@poller=epoll1+0x4aa14ef)
    #24 grpc_event_engine::experimental::SelfDeletingClosure::Run() /proc/self/cwd/./src/core/lib/event_engine/common_closures.h:54:5 (xds_cluster_end2end_test@poller=epoll1+0x56a78ad)
    #25 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::Step() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:552:14 (xds_cluster_end2end_test@poller=epoll1+0x56a4663)
    #26 grpc_event_engine::experimental::WorkStealingThreadPool::ThreadState::ThreadBody() /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:515:10 (xds_cluster_end2end_test@poller=epoll1+0x56a3d47)
    #27 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::operator()(void*) const /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:277:17 (xds_cluster_end2end_test@poller=epoll1+0x56a5049)
    #28 grpc_event_engine::experimental::WorkStealingThreadPool::WorkStealingThreadPoolImpl::StartThread()::$_0::__invoke(void*) /proc/self/cwd/src/core/lib/event_engine/thread_pool/work_stealing_thread_pool.cc:275:7 (xds_cluster_end2end_test@poller=epoll1+0x56a4fe9)
    #29 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::operator()(void*) const /proc/self/cwd/src/core/util/posix/thd.cc:145:11 (xds_cluster_end2end_test@poller=epoll1+0x58479f0)
    #30 grpc_core::(anonymous namespace)::ThreadInternalsPosix::ThreadInternalsPosix(char const*, void (*)(void*), void*, bool*, grpc_core::Thread::Options const&)::'lambda'(void*)::__invoke(void*) /proc/self/cwd/src/core/util/posix/thd.cc:115:9 (xds_cluster_end2end_test@poller=epoll1+0x5847819)
```

Closes grpc#39806

COPYBARA_INTEGRATE_REVIEW=grpc#39806 from markdroth:lrs_server_callback_fix e10ed85
PiperOrigin-RevId: 769289887
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