QLocalSocket waitForReadyRead in thread crashed

I use QLocalSocket for inter-process communication.

One server,listen for connect,when new connection comes,create a thread, in the thread qlocalsocket just waitForReadyRead.

One client.connect to server above and circularly write data.

code:

server: 

TestServer::TestServer(QObject *parent) : QObject(parent),
ptr_server_(NULL)
{
}
void TestServer::Init()
{
if (ptr_server_)
{
return;
}
ptr_server_ = new QLocalServer(this);
connect(ptr_server_, &QLocalServer::newConnection, this, [=]() {
qDebug() << "one client";
QLocalSocket* ptr_socket = ptr_server_->nextPendingConnection();
connect(ptr_socket, SIGNAL(error(QLocalSocket::LocalSocketError)), this, SLOT(OnError(QLocalSocket::LocalSocketError)));
SocketThread* ptr_thread = new SocketThread(this);
ptr_thread->SetSocket(ptr_socket);
ptr_thread->start();
ptr_socket_list_.append(ptr_socket);
});
}
void TestServer::OnError(QLocalSocket::LocalSocketError socketError)
{
qDebug() << socketError;
}
void TestServer::Run()
{
Init();
bool r = ptr_server_->listen("TestServer");
if (!r)
{
qDebug() << "listen failed";
}
}
void TestServer::Stop()
{
foreach (QLocalSocket* ptr_socket, ptr_socket_list_) {
ptr_socket->close();
delete ptr_socket;
ptr_socket = NULL;
}
ptr_server_->close();
delete ptr_server_;
ptr_server_ = NULL;
}

thread:

void SocketThread::run()
{
 while(!quit_)
 {
 ptr_socket_->waitForReadyRead(500000);
 if (ptr_socket_->isReadable())
 {
 QByteArray byte_array = ptr_socket_->readAll();
 qDebug() << byte_array.length();
byte_array.clear();
 }
 }
}

client:

TestClient::TestClient(QObject *parent) : QObject(parent),
 ptr_socket_(NULL),
 ptr_timer_(NULL),
 bytes_size_(1),
 total_bytes_(0)
 {
 ptr_timer_ = new QTimer(this);
 ptr_timer_->setSingleShot(false);
 ptr_timer_->setInterval(500);
connect(ptr_timer_, &QTimer::timeout, this, &TestClient::WriteBytes);
 }
void TestClient::Run()
 {
 Init();
ptr_socket_->connectToServer("TestServer", QIODevice::ReadWrite);
 }
void TestClient::Stop()
 {
 if (ptr_timer_)
 {
 ptr_timer_->stop();
 }
if (ptr_socket_)
 {
 ptr_socket_->close();
 delete ptr_socket_;
 ptr_socket_ = NULL;
 }
 }
void TestClient::Init()
 {
 if (ptr_socket_)
 {
 return;
 }
ptr_socket_ = new QLocalSocket(this);
 connect(ptr_socket_, &QLocalSocket::connected, this, [=]() {
 emit SignalMsg("connected");
Test(2000, 1024);
 });
 connect(ptr_socket_, &QLocalSocket::readyRead, this, [=]() {
 QByteArray byteArray = ptr_socket_->readAll();
 int length = byteArray.length();
 total_bytes_ += length;
 emit SignalMsg(QString("read %1 bytes total %2 at ").arg(length).arg(total_bytes_) + QDateTime::currentDateTime().toString("ss : zzz"));
 });
 }
void TestClient::Test(int msec, int size)
 {
 ptr_timer_->stop();
bytes_size_ = size;
 ptr_timer_->setInterval(msec);
 ptr_timer_->start();
 }
void TestClient::StopTest()
 {
 ptr_timer_->stop();
 }
void TestClient::WriteBytes()
 {
 if (ptr_socket_ && ptr_socket_->isWritable())
 {
 char* buf = new char[bytes_size_];
qDebug() << ptr_socket_->write(buf, bytes_size_);
 delete buf;
 }
 }

after just few seconds, server crash, As

 Qt5Cored.dll!QByteArray::resize(int size) 行 1578 C++
Qt5Cored.dll!QRingBuffer::reserve(__int64 bytes) 行 112 C++
> Qt5Cored.dll!QWindowsPipeReader::startAsyncRead() 行 239 C++
Qt5Cored.dll!QWindowsPipeReader::notified(unsigned int numberOfBytesRead, unsigned int errorCode, _OVERLAPPED * notifiedOverlapped) 行 215 C++
Qt5Cored.dll!QtPrivate::FunctorCall<QtPrivate::IndexesList<0,1,2>,QtPrivate::List<unsigned int,unsigned int,OVERLAPPED >,void,void (_thiscall QWindowsPipeReader::)(unsigned int,unsigned int,_OVERLAPPED *)>::call(void (unsigned int, unsigned int, _OVERLAPPED *) * f, QWindowsPipeReader * o, void * * arg) 行 501 C++
Qt5Cored.dll!QtPrivate::FunctionPointer<void (__thiscall QWindowsPipeReader::*)(unsigned int,unsigned int,_OVERLAPPED *)>::call<QtPrivate::List<unsigned int,unsigned int,_OVERLAPPED *>,void>(void (unsigned int, unsigned int, _OVERLAPPED *) * f, QWindowsPipeReader * o, void * * arg) 行 520 C++
Qt5Cored.dll!QtPrivate::QSlotObject<void (_thiscall QWindowsPipeReader::*)(unsigned int,unsigned int,_OVERLAPPED *),QtPrivate::List<unsigned int,unsigned int,_OVERLAPPED *>,void>::impl(int which, QtPrivate::QSlotObjectBase * this, QObject * r, void * * a, bool * ret) 行 143 C++
Qt5Cored.dll!QtPrivate::QSlotObjectBase::call(QObject * r, void * * a) 行 124 C++
Qt5Cored.dll!QMetaCallEvent::placeMetaCall(QObject * object) 行 493 C++
Qt5Cored.dll!QObject::event(QEvent * e) 行 1257 C++
Qt5Widgetsd.dll!QApplicationPrivate::notify_helper(QObject * receiver, QEvent * e) 行 3714 C++
Qt5Widgetsd.dll!QApplication::notify(QObject * receiver, QEvent * e) 行 3157 C++
Qt5Cored.dll!QCoreApplication::notifyInternal2(QObject * receiver, QEvent * event) 行 1015 C++
Qt5Cored.dll!QCoreApplication::sendEvent(QObject * receiver, QEvent * event) 行 227 C++
Qt5Cored.dll!QCoreApplicationPrivate::sendPostedEvents(QObject * receiver, int event_type, QThreadData * data) 行 1650 C++
Qt5Cored.dll!QEventDispatcherWin32::sendPostedEvents() 行 1264 C++
qwindowsd.dll!QWindowsGuiEventDispatcher::sendPostedEvents() 行 76 C++
Qt5Cored.dll!qt_internal_proc(HWND__ * hwnd, unsigned int message, unsigned int wp, long lp) 行 431 C++
[外部代码]
[下面的框架可能不正确和/或缺失，没有为 user32.dll 加载符号]
Qt5Cored.dll!QEventDispatcherWin32::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) 行 829 C++
qwindowsd.dll!QWindowsGuiEventDispatcher::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) 行 68 C++
Qt5Cored.dll!QEventLoop::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) 行 129 C++
Qt5Cored.dll!QEventLoop::exec(QFlags<enum QEventLoop::ProcessEventsFlag> flags) 行 204 C++
Qt5Cored.dll!QCoreApplication::exec() 行 1285 C++
Qt5Guid.dll!QGuiApplication::exec() 行 1599 C++
Qt5Widgetsd.dll!QApplication::exec() 行 2974 C++
DEMO.exe!main(int argc, char * * argv) 行 20 C++
DEMO.exe!WinMain(HINSTANCE__ * _formal, HINSTANCE_ * __formal, char * __formal, int __formal) 行 113 C++