Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-75156

Simplecoapclient crashing when Discover/Observe/Cancel Observe

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P1: Critical
    • Resolution: Fixed
    • Affects Version/s: 5.13.0 Beta 1
    • Fix Version/s: 5.13.0 Beta2
    • Component/s: CoAP
    • Labels:
      None
    • Platform/s:
      Linux/X11
    • Commits:
      551e79f4beeca71855ea7b505db27d0e7111cddd (qt/qtcoap/dev)

      Description

      How to reproduce:

      • Enter coap.me as Host
      • Press "Discover" button
      • Press "Observe" button forĀ  default "/test" resource
      • Press "Cancel Observe"

      The crash below can be observed when pressing "Cancel Observe".

      Thread 1 "simplecoapclien" received signal SIGSEGV, Segmentation fault.
      QUrl::isEmpty (this=this@entry=0x7fffffffcad0) at io/qurl.cpp:1896
      1896 return d->isEmpty();
      (gdb) bt
      #0 QUrl::isEmpty (this=this@entry=0x7fffffffcad0) at io/qurl.cpp:1896
      #1 0x00007ffff672e36f in QCoapRequest::adjustedUrl (url=..., secure=<optimized out>) at qcoaprequest.cpp:305
      #2 0x00007ffff6710755 in QCoapClient::cancelObserve (this=<optimized out>, url=...) at qcoapclient.cpp:506
      #3 0x000055555555b663 in MainWindow::<lambda()>::operator() (__closure=0x7fffe400a0d0) at mainwindow.cpp:219
      #4 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, MainWindow::on_observeButton_clicked()::<lambda()> >::call (arg=<optimized out>, f=...)
      at /home/ablasche/dev/qt/qt513/qtbase/include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:146
      #5 QtPrivate::Functor<MainWindow::on_observeButton_clicked()::<lambda()>, 0>::call<QtPrivate::List<>, void> (
      arg=<optimized out>, f=...)
      at /home/ablasche/dev/qt/qt513/qtbase/include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:256
      #6 QtPrivate::QFunctorSlotObject<MainWindow::on_observeButton_clicked()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x7fffe400a0c0, r=<optimized out>,
      a=<optimized out>, ret=<optimized out>)
      at /home/ablasche/dev/qt/qt513/qtbase/include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:439
      #7 0x00007ffff61e60fa in QtPrivate::QSlotObjectBase::call (a=0x7fffffffccc0, r=0x7fffffffda90, this=<optimized out>)
      at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
      #8 QMetaObject::activate (sender=sender@entry=0x5555558ad4c0, signalOffset=<optimized out>,
      local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fffffffccc0) at kernel/qobject.cpp:3782
      #9 0x00007ffff61e65a1 in QMetaObject::activate (sender=sender@entry=0x5555558ad4c0,
      m=m@entry=0x7ffff7daa4e0 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2,
      argv=argv@entry=0x7fffffffccc0) at kernel/qobject.cpp:3652
      #10 0x00007ffff7750706 in QAbstractButton::clicked (this=this@entry=0x5555558ad4c0, _t1=<optimized out>)
      at .moc/moc_qabstractbutton.cpp:313
      #11 0x00007ffff775094e in QAbstractButtonPrivate::emitClicked (this=this@entry=0x5555558acc80) at widgets/qabstractbutton.cpp:414
      #12 0x00007ffff7751fb8 in QAbstractButtonPrivate::click (this=this@entry=0x5555558acc80) at widgets/qabstractbutton.cpp:407
      #13 0x00007ffff7752272 in QAbstractButton::mouseReleaseEvent (this=0x5555558ad4c0, e=0x7fffffffd210)
      at widgets/qabstractbutton.cpp:1011
      #14 0x00007ffff7692bd4 in QWidget::event (this=0x5555558ad4c0, event=0x7fffffffd210) at kernel/qwidget.cpp:8939
      #15 0x00007ffff7753463 in QAbstractButton::event (this=this@entry=0x5555558ad4c0, e=e@entry=0x7fffffffd210)
      at widgets/qabstractbutton.cpp:968
      #16 0x00007ffff780031b in QPushButton::event (this=0x5555558ad4c0, e=0x7fffffffd210) at widgets/qpushbutton.cpp:684
      #17 0x00007ffff7648fc3 in QApplicationPrivate::notify_helper (this=this@entry=0x555555783220,
      receiver=receiver@entry=0x5555558ad4c0, e=0x7fffffffd210) at kernel/qapplication.cpp:3739
      #18 0x00007ffff7650921 in QApplication::notify (this=<optimized out>, receiver=0x5555558ad4c0, e=0x7fffffffd210)
      at kernel/qapplication.cpp:3200
      #19 0x00007ffff61b1f2b in QCoreApplication::notifyInternal2 (receiver=0x5555558ad4c0, event=0x7fffffffd210)
      at kernel/qcoreapplication.cpp:1060
      #20 0x00007ffff61b21ac in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x5555558ad4c0,
      event=event@entry=0x7fffffffd210) at kernel/qcoreapplication.cpp:1469
      #21 0x00007ffff764fbe8 in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x5555558ad4c0,
      event=event@entry=0x7fffffffd210, alienWidget=alienWidget@entry=0x5555558ad4c0, nativeWidget=0x7fffffffda90,
      buttonDown=buttonDown@entry=0x7ffff7dd4960 <qt_button_down>, lastMouseReceiver=..., spontaneous=true,
      onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2686
      #22 0x00007ffff76b068a in QWidgetWindow::handleMouseEvent (this=this@entry=0x55555584ec70, event=event@entry=0x7fffffffd650)
      at kernel/qwidgetwindow.cpp:662
      #23 0x00007ffff76b2a7a in QWidgetWindow::event (this=0x55555584ec70, event=0x7fffffffd650) at kernel/qwidgetwindow.cpp:281
      #24 0x00007ffff7648fc3 in QApplicationPrivate::notify_helper (this=this@entry=0x555555783220,
      receiver=receiver@entry=0x55555584ec70, e=e@entry=0x7fffffffd650) at kernel/qapplication.cpp:3739
      #25 0x00007ffff765065a in QApplication::notify (this=0x7fffffffda80, receiver=0x55555584ec70, e=0x7fffffffd650)
      at kernel/qapplication.cpp:3096
      #26 0x00007ffff61b1f2b in QCoreApplication::notifyInternal2 (receiver=0x55555584ec70, event=0x7fffffffd650)
      at kernel/qcoreapplication.cpp:1060
      #27 0x00007ffff61b21ac in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x55555584ec70,
      event=event@entry=0x7fffffffd650) at kernel/qcoreapplication.cpp:1469
      #28 0x00007ffff6e4377d in QGuiApplicationPrivate::processMouseEvent (e=0x55555585ef90) at kernel/qguiapplication.cpp:2106
      #29 0x00007ffff6e44c62 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x55555585ef90)
      at kernel/qguiapplication.cpp:1841
      #30 0x00007ffff6e1d50d in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...)
      at kernel/qwindowsysteminterface.cpp:1087
      #31 0x00007fffefaac7fa in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
      #32 0x00007ffff3939387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
      #33 0x00007ffff39395c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
      #34 0x00007ffff393964c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
      #35 0x00007ffff621364a in QEventDispatcherGlib::processEvents (this=0x5555557fee10, flags=...)
      at kernel/qeventdispatcher_glib.cpp:423
      #36 0x00007fffefaacb68 in QXcbGlibEventDispatcher::processEvents (this=<optimized out>, flags=...) at qxcbeventdispatcher.cpp:143
      #37 0x00007ffff61afc89 in QEventLoop::processEvents (this=this@entry=0x7fffffffda00, flags=..., flags@entry=...)
      at kernel/qeventloop.cpp:138
      #38 0x00007ffff61b00d7 in QEventLoop::exec (this=this@entry=0x7fffffffda00, flags=flags@entry=...) at kernel/qeventloop.cpp:225
      #39 0x00007ffff61ba1b8 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1370
      #40 0x00007ffff6e39ff6 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1783
      --Type <return> to continue, or q <return> to quit--
      #41 0x00007ffff7648ea3 in QApplication::exec () at kernel/qapplication.cpp:2896
      #42 0x000055555555b5ff in main (argc=<optimized out>, argv=<optimized out>) at main.cpp:61

      {quote

        Attachments

        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

            • Assignee:
              sonakur Sona Kurazyan
              Reporter:
              ablasche Alex Blasche
            • Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Gerrit Reviews

                There are no open Gerrit changes