Bug 441387

Application: step (21.08.0)

Qt Version: 5.15.3
Frameworks Version: 5.85.0
Operating System: Linux 5.11.0-27-generic x86_64
Windowing System: X11
Drkonqi Version: 5.22.4
Distribution: KDE neon User Edition 5.22

-- Information about the crash:
- What I was doing when the application crashed:

opened a example file (tutorial1) and scrolled a bit. Then dr konqi said it crashed

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: Step (step), signal: Segmentation fault

[New LWP 12096]
[New LWP 12098]
[New LWP 12105]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f86d88b1aff in __GI___poll (fds=0x7ffd57f24db8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f86d3369540 (LWP 12093))]

Thread 4 (Thread 0x7f86be54b700 (LWP 12105)):
#0  0x00007f86d88b1aff in __GI___poll (fds=0x7f86a4007170, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f86c822b1d6 in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f86c821c841 in pa_mainloop_poll () from /lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f86c821cec3 in pa_mainloop_iterate () from /lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f86c821cf70 in pa_mainloop_run () from /lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f86c822b11d in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f86c81c772c in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so
#7  0x00007f86d773e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f86d88be293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f86cbb8f700 (LWP 12098)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d267624ba4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55d267624b50, cond=0x55d267624b78) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55d267624b78, mutex=0x55d267624b50) at pthread_cond_wait.c:638
#3  0x00007f86d8daff2b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x000055d266f16697 in SimulationThread::run (this=0x55d267458fb0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qdeadlinetimer.h:68
#5  0x00007f86d8da9dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f86d773e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007f86d88be293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f86d1763700 (LWP 12096)):
#0  0x00007f86d88b1aff in __GI___poll (fds=0x7f86c401ad20, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f86d66b536e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f86d66b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f86d8feafcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f86d8f8f25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f86d8da8c22 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f86d729af4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f86d8da9dbc in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f86d773e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f86d88be293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f86d3369540 (LWP 12093)):
[KCrash Handler]
#4  0x000055d266eef739 in PolygonCreator::sceneEvent (this=0x55d26793ea00, event=0x7ffd57f25d70) at ./step/polygongraphics.cc:474
#5  0x000055d266ed1c34 in WorldScene::event (this=0x55d267890b90, event=0x7ffd57f25d70) at ./step/worldscene.cc:215
#6  0x00007f86d9a6adc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007f86d9a73bb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f86d8f9075a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f86d9dce902 in QGraphicsViewPrivate::mouseMoveEventHandler(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f86d9aadcf6 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f86d9b5e092 in QFrame::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f86d9dd1411 in QGraphicsView::viewportEvent(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f86d8f904c3 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f86d9a6adb2 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f86d9a73e77 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f86d8f9075a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f86d9a730a7 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f86d9ac8f44 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f86d9acc264 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f86d9a6adc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f86d9a73bb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f86d8f9075a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f86d93744e8 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#24 0x00007f86d9375b55 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#25 0x00007f86d934d7ac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#26 0x00007f86d2eedeae in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#27 0x00007f86d66b517d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f86d66b5400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f86d66b54a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f86d8feafb2 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f86d8f8f25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f86d8f97414 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x000055d266ea8725 in main (argc=<optimized out>, argv=<optimized out>) at ./step/main.cc:97
[Inferior 1 (process 12093) detached]

Possible duplicates by query: bug 441349, bug 440377, bug 440343, bug 440137, bug 439991.

Reported using DrKonqi