Details
P1: Critical Description
Occasionally when a http post request is aborted, it does not seem like qnam cleans up properly.
Once i return from the slot connected to the finished signal from qnam and where i call reply->deletelater() the thread crashes on what i believe is the qnam attempting to reprocess the same request that was just aborted and also deleted.
The thread in question uploads a series of files using http multipart/form-data. It does not try to issue a new post request before the previous one has finished, which is why i find it strange that it crashes on q_startNextRequest(). In the finished slot i start a qtimer on 50milliseconds which timeout signal is connected to the slot that issues the new post request. The thread crashes after the timer has been set and before the slot connected to the timeout signal is called.
The connection uses ssl, but i don't think the crash is related to that.
Thread x Crashed: 0 ??? 0x2e003200 0 + 771764736 1 QtNetwork 0x01142196 QHttpNetworkConnectionPrivate::_q_startNextRequest() + 86 2 QtNetwork 0x01142455 QHttpNetworkConnection::qt_metacall(QMetaObject::Call, int, void**) + 197 3 QtCore 0x0139bf0a QMetaCallEvent::placeMetaCall(QObject*) + 42 4 QtCore 0x0139e264 QObject::event(QEvent*) + 548 5 QtGui 0x005d3fff QApplicationPrivate::notify_helper(QObject*, QEvent*) + 175 6 QtGui 0x005da2b5 QApplication::notify(QObject*, QEvent*) + 1221 7 QtCore 0x012b2bf2 QCoreApplication::notifyInternal(QObject*, QEvent*) + 98 8 QtCore 0x01391b10 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 720 9 QtCore 0x013b5ab8 QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 56 10 QtCore 0x0138f801 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 65 11 QtCore 0x0138fa2d QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 189 12 QtCore 0x012d4a7d QThread::exec() + 93
Thread x Crashed: 0 QtNetwork 0x01144d25 QHttpNetworkConnectionChannel::resetUploadData() + 37 1 QtNetwork 0x01142196 QHttpNetworkConnectionPrivate::_q_startNextRequest() + 86 2 QtNetwork 0x01142455 QHttpNetworkConnection::qt_metacall(QMetaObject::Call, int, void**) + 197 3 QtCore 0x0139bf0a QMetaCallEvent::placeMetaCall(QObject*) + 42 4 QtCore 0x0139e264 QObject::event(QEvent*) + 548 5 QtGui 0x005d3fff QApplicationPrivate::notify_helper(QObject*, QEvent*) + 175 6 QtGui 0x005da2b5 QApplication::notify(QObject*, QEvent*) + 1221 7 QtCore 0x012b2bf2 QCoreApplication::notifyInternal(QObject*, QEvent*) + 98 8 QtCore 0x01391b10 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 720 9 QtCore 0x013b5ab8 QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 56 10 QtCore 0x0138f801 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 65 11 QtCore 0x0138fa2d QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 189 12 QtCore 0x012d4a7d QThread::exec() + 93
Thread x Crashed: 0 ??? 0x01487e5d typeinfo for QSignalMapperPrivate + 5 1 QtNetwork 0x0114f196 QHttpNetworkConnectionPrivate::_q_startNextRequest() + 86 2 QtNetwork 0x0114f455 QHttpNetworkConnection::qt_metacall(QMetaObject::Call, int, void**) + 197 3 QtCore 0x013a8f0a QMetaCallEvent::placeMetaCall(QObject*) + 42 4 QtCore 0x013ab264 QObject::event(QEvent*) + 548 5 QtGui 0x005e0fff QApplicationPrivate::notify_helper(QObject*, QEvent*) + 175 6 QtGui 0x005e72b5 QApplication::notify(QObject*, QEvent*) + 1221 7 QtCore 0x012bfbf2 QCoreApplication::notifyInternal(QObject*, QEvent*) + 98 8 QtCore 0x0139eb10 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 720 9 QtCore 0x013c2ab8 QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 56 10 QtCore 0x0139c801 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 65 11 QtCore 0x0139ca2d QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 189 12 QtCore 0x012e1a7d QThread::exec() + 93