Greengrass IPC Publisher Sample Code Segfaults with reduced sleep time

[gearoid-moore]

Confirm by changing [ ] to [x] below to ensure that it's a bug:

• I've searched for previous similar issues and didn't find any solution

Known Issue

• I'm using ATS data type endpoint: the endpoint should look like <prefix>-ats.iot.<region>.amazonaws.com

Describe the bug
Running the Greengrass IPC Publisher for C++ with a reduced sleep time (from 5 seconds to 100 milliseconds) causes a segfault in the program.

Full code below, adapted from: https://docs.aws.amazon.com/greengrass/v2/developerguide/ipc-publish-subscribe.html

#include <iostream>


#include <aws/crt/Api.h>
#include <aws/greengrass/GreengrassCoreIpcClient.h>

using namespace Aws::Crt;

using namespace Aws::Greengrass;


class IpcClientLifecycleHandler : public ConnectionLifecycleHandler {

    void OnConnectCallback() override {
        std::cout << "OnConnectCallback" << std::endl;
    }

    void OnDisconnectCallback(RpcError error) override {

        std::cout << "OnDisconnectCallback: " << error.StatusToString() << std::endl;
        exit(-1);

    }

    bool OnErrorCallback(RpcError error) override {
        std::cout << "OnErrorCallback: " << error.StatusToString() << std::endl;

        return true;

    }

};

int main() {
    String message("Hello from the pub/sub publisher (C++).");
    String topic("test/topic/cpp");
    int timeout = 10;
    
    ApiHandle apiHandle(g_allocator);
    Io::EventLoopGroup eventLoopGroup(1);
    Io::DefaultHostResolver socketResolver(eventLoopGroup, 64, 30);
    Io::ClientBootstrap bootstrap(eventLoopGroup, socketResolver);
    IpcClientLifecycleHandler ipcLifecycleHandler;
    GreengrassCoreIpcClient ipcClient(bootstrap);
    auto connectionStatus = ipcClient.Connect(ipcLifecycleHandler).get();
    if (!connectionStatus) {
        std::cerr << "Failed to establish IPC connection: " << connectionStatus.StatusToString() << std::endl;
        exit(-1);
    }

    while (true) {
        PublishToTopicRequest request;
        Vector<uint8_t> messageData({message.begin(), message.end()});
        BinaryMessage binaryMessage;
        binaryMessage.SetMessage(messageData);
        PublishMessage publishMessage;
        publishMessage.SetBinaryMessage(binaryMessage);
        request.SetTopic(topic);
        request.SetPublishMessage(publishMessage);

        PublishToTopicOperation operation = ipcClient.NewPublishToTopic();
        auto activate = operation.Activate(request, nullptr);
        activate.wait();

        auto responseFuture = operation.GetResult();
        if (responseFuture.wait_for(std::chrono::seconds(timeout)) == std::future_status::timeout) {
            std::cerr << "Operation timed out while waiting for response from Greengrass Core." << std::endl;
            exit(-1);
        }

        auto response = responseFuture.get();
        if (response) {
            std::cout << "Successfully published to topic: " << topic << std::endl;

        } else {
            // An error occurred.
            std::cout << "Failed to publish to topic: " << topic << std::endl;
            auto errorType = response.GetResultType();
            if (errorType == OPERATION_ERROR) {
                auto *error = response.GetOperationError();
                std::cout << "Operation error: " << error->GetMessage().value() << std::endl;
            } else {
                std::cout << "RPC error: " << response.GetRpcError() << std::endl;
            }
            exit(-1);
        }

        std::this_thread::sleep_for(std::chrono::milliseconds(100));
    }

    return 0;
}

Platform/OS/Device
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic

Hardware: Nvidia Jetson Xavier

SDK version number
Unsure how to get this - believe I am using the latest version.

To Reproduce (observed behavior)
Follow the steps outlined in the Greengrass Guide for creating + deploying a CPP IPC Publisher, with the code slightly edited as above. (https://docs.aws.amazon.com/greengrass/v2/developerguide/ipc-publish-subscribe.html)

Expected behavior
I would expect the publisher to continue publishing messages indefinetely until the program is stopped.

Logs/output
Segfault log below.

2021-09-29T17:10:55.957Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.059Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.160Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.261Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.362Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.463Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.563Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.664Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.765Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.867Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:56.968Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.069Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.169Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.271Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.373Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.474Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.575Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.675Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.776Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.877Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:57.978Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.079Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.180Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.281Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.382Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.484Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.586Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.687Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Successfully published to topic: test/topic/cpp. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.788Z [WARN] (Copier) com.example.PubSubPublisherCpp: stderr. malloc(): memory corruption. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.810Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.810Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. Thread 1 "greengrassv2_pu" received signal SIGABRT, Aborted.. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.810Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.810Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.810Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #1  0x0000007fb7bc48d4 in __GI_abort () at abort.c:79. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.810Z [WARN] (Copier) com.example.PubSubPublisherCpp: stderr. 51	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.837Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #2  0x0000007fb7bfd68c in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fb7cbe6f8 "%s\n") at ../sysdeps/posix/libc_fatal.c:181. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.837Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #3  0x0000007fb7c03a04 in malloc_printerr (str=str@entry=0x7fb7cba7a8 "malloc(): memory corruption") at malloc.c:5342. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.838Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #4  0x0000007fb7c06b0c in _int_malloc (av=av@entry=0x7fb7ce4a70 <main_arena>, bytes=bytes@entry=64) at malloc.c:3748. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.840Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #5  0x0000007fb7c083a4 in __GI___libc_malloc (bytes=64) at malloc.c:3075. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:10:58.840Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #6  0x0000007fb7e5852c in operator new(unsigned long) () from /usr/lib/aarch64-linux-gnu/libstdc++.so.6. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.715Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #7  0x000000555563d000 in __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult>, std::allocator<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >, (__gnu_cxx::_Lock_policy)2> >::allocate (this=<optimized out>, __n=1) at /usr/include/c++/7/ext/new_allocator.h:111. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.716Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #8  std::allocator_traits<std::allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult>, std::allocator<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >, (__gnu_cxx::_Lock_policy)2> > >::allocate (__a=..., __n=1) at /usr/include/c++/7/bits/alloc_traits.h:436. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.716Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #9  std::__allocate_guarded<std::allocator<std::_Sp_counted_ptr_inplace<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult>, std::allocator<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >, (__gnu_cxx::_Lock_policy)2> > > (__a=...) at /usr/include/c++/7/bits/allocated_ptr.h:104. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.716Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #10 std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult>, std::allocator<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >, std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > > > (__a=..., this=<optimized out>) at /usr/include/c++/7/bits/shared_ptr_base.h:635. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.716Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #11 std::__shared_ptr<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult>, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >, std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > > > (__a=..., this=<optimized out>, __tag=...) at /usr/include/c++/7/bits/shared_ptr_base.h:1295. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.717Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #12 std::shared_ptr<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >::shared_ptr<std::allocator<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >, std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > > > (__a=..., this=<optimized out>, __tag=...) at /usr/include/c++/7/bits/shared_ptr.h:344. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.718Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #13 std::allocate_shared<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult>, std::allocator<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult> >, std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > > > (__a=...) at /usr/include/c++/7/bits/shared_ptr.h:691. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.718Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #14 std::make_shared<std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > >, Aws::Greengrass::PublishToTopicResult>, std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > > > () at /usr/include/c++/7/bits/shared_ptr.h:707. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.718Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #15 std::__future_base::_S_make_deferred_state<std::thread::_Invoker<std::tuple<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > > > (__fn=...) at /usr/include/c++/7/future:1696. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.718Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #16 std::async<Aws::Greengrass::PublishToTopicOperation::GetResult()::<lambda()> > (__policy=std::launch::deferred, __fn=...) at /usr/include/c++/7/future:1735. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.718Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #17 Aws::Greengrass::PublishToTopicOperation::GetResult (this=0x7fffffef90) at /home/myusername/gearoid_workspace/cv_app/sdk-cpp-workspace/aws-iot-device-sdk-cpp-v2/greengrass_ipc/source/GreengrassCoreIpcModel.cpp:5905. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.719Z [INFO] (Copier) com.example.PubSubPublisherCpp: stdout. #18 0x00000055556172bc in main () at /home/myusername/ipc_basic_sample/provided_sample.cpp:65. {scriptName=services.com.example.PubSubPublisherCpp.lifecycle.Run, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}
2021-09-29T17:11:00.783Z [INFO] (Copier) com.example.PubSubPublisherCpp: Run script exited. {exitCode=0, serviceName=com.example.PubSubPublisherCpp, currentState=RUNNING}

Additional context
Add any other context about the problem here.

[chris1287]

I have the same issue.
@Scriobhneoir how do you get the backtrace directly printed in the greengrass log?

[gearoid-moore]

@chris1287 I used gdb in the Recipe "Run" command:

{ "Run": "gdb -q --batch -ex \"run\" -ex \"bt\" {artifacts:path}/greengrassv2_pubsub_cpp" }

[bretambrose]

How quickly are you getting the crash? My initial repro attempt has been running about 40 minutes without issue. Any special compilation flags?

[gearoid-moore]

I get the crash within minutes. The shorter the interval between publish calls, the faster the crash happens. With an interval of 100ms between calls the crash happens within 5 minutes.

No special compilation flags - I built the "aws-iot-device-sdk-cpp-v2-build" with the "Debug" option.

[bretambrose]

I modified the sample to use multiple publish threads and almost no sleep time and am now seemingly able to repro it very quickly. I'm hoping debug + asan will help us zero in on the offending memory trasher(s) quickly and will continue to update this as I find out more.

[bretambrose]

This should be fixed as a part of the v1.14.6 release.

[github-actions]

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