Automated fix for refs/heads/feature/upgrade-pytype/02-update-inputs#18
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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
asheshvidyut
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Apr 23, 2026
…try to ccache download (grpc#42180) ### Description Fix flaky tests for the log, looks like a network issue. ``` #18 [15/18] RUN curl -sSL -o ccache.tar.gz https://github.com/ccache/ccache/releases/download/v4.11.3/ccache-4.11.3.tar.gz && tar -zxf ccache.tar.gz && cd ccache-4.11.3 && mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DZSTD_FROM_INTERNET=ON -DHIREDIS_FROM_INTERNET=ON .. && make -j4 && make install && cd ../.. && rm -rf ccache-4.11.3 ccache.tar.gz #18 11.37 #18 11.37 gzip: stdin: not in gzip format #18 11.37 tar: Child returned status 1 #18 11.37 tar: Error is not recoverable: exiting now #18 ERROR: process "/bin/sh -c curl -sSL -o ccache.tar.gz https://github.com/ccache/ccache/releases/download/v4.11.3/ccache-4.11.3.tar.gz && tar -zxf ccache.tar.gz && cd ccache-4.11.3 && mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DZSTD_FROM_INTERNET=ON -DHIREDIS_FROM_INTERNET=ON .. && make -j4 && make install && cd ../.. && rm -rf ccache-4.11.3 ccache.tar.gz" did not complete successfully: exit code: 2 ------ ``` Added retry to ccache install. Closes grpc#42180 COPYBARA_INTEGRATE_REVIEW=grpc#42180 from asheshvidyut:fixit/fix-flake 33a66ed PiperOrigin-RevId: 902683742
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PanCakes to the rescue!
We noticed that our 'sanity' test was going to fail, but we think we can fix that automatically, so we put together this PR to do just that!
If you'd like to opt-out of these PR's, add yourself to NO_AUTOFIX_USERS in .github/workflows/pr-auto-fix.yaml