Application: labplot2 (2.8.0) Qt Version: 5.15.1 Frameworks Version: 5.75.0 Operating System: Linux 5.9.1-1-default x86_64 Windowing system: X11 Distribution: "openSUSE Tumbleweed" -- Information about the crash: - What I was doing when the application crashed: Had two windows of labplot open, each with a different project. Attempted to drag a folder from one project to another project in the other window. Crashes every time. The crash can be reproduced every time. -- Backtrace: Application: LabPlot (labplot2), signal: Segmentation fault [New LWP 6308] [New LWP 6309] [New LWP 6310] [New LWP 6311] [New LWP 6312] [New LWP 6313] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f7092ff7e7f in poll () from /lib64/libc.so.6 [Current thread is 1 (Thread 0x7f708f328bc0 (LWP 6307))] Thread 7 (Thread 0x7f707f7fe640 (LWP 6313)): #0 0x00007f7092eef082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f708587aedb in ?? () from /usr/lib64/dri/i965_dri.so #2 0x00007f708587a727 in ?? () from /usr/lib64/dri/i965_dri.so #3 0x00007f7092ee8eb1 in start_thread () from /lib64/libpthread.so.0 #4 0x00007f7093002ccf in clone () from /lib64/libc.so.6 Thread 6 (Thread 0x7f707ffff640 (LWP 6312)): #0 0x00007f7092eef082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f708587aedb in ?? () from /usr/lib64/dri/i965_dri.so #2 0x00007f708587a727 in ?? () from /usr/lib64/dri/i965_dri.so #3 0x00007f7092ee8eb1 in start_thread () from /lib64/libpthread.so.0 #4 0x00007f7093002ccf in clone () from /lib64/libc.so.6 Thread 5 (Thread 0x7f7084996640 (LWP 6311)): #0 0x00007f7092eef082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f708587aedb in ?? () from /usr/lib64/dri/i965_dri.so #2 0x00007f708587a727 in ?? () from /usr/lib64/dri/i965_dri.so #3 0x00007f7092ee8eb1 in start_thread () from /lib64/libpthread.so.0 #4 0x00007f7093002ccf in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x7f7085197640 (LWP 6310)): #0 0x00007f7092eef082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f708587aedb in ?? () from /usr/lib64/dri/i965_dri.so #2 0x00007f708587a727 in ?? () from /usr/lib64/dri/i965_dri.so #3 0x00007f7092ee8eb1 in start_thread () from /lib64/libpthread.so.0 #4 0x00007f7093002ccf in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x7f7087aa8640 (LWP 6309)): #0 0x00007f7092ff7e7f in poll () from /lib64/libc.so.6 #1 0x00007f7091a2efbe in ?? () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f7091a2f0df in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #3 0x00007f7093f2d5cb in QEventDispatcherGlib::processEvents (this=0x7f7080000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425 #4 0x00007f7093ed4a1b in QEventLoop::exec (this=this@entry=0x7f7087aa78f0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141 #5 0x00007f7093cf57ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #6 0x00007f7092b83a27 in ?? () from /usr/lib64/libQt5DBus.so.5 #7 0x00007f7093cf6911 in QThreadPrivate::start (arg=0x7f7092bf0d80) at thread/qthread_unix.cpp:329 #8 0x00007f7092ee8eb1 in start_thread () from /lib64/libpthread.so.0 #9 0x00007f7093002ccf in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x7f708d2d1640 (LWP 6308)): #0 0x00007f7092ff7e7f in poll () from /lib64/libc.so.6 #1 0x00007f7090400862 in ?? () from /usr/lib64/libxcb.so.1 #2 0x00007f709040226c in xcb_wait_for_event () from /usr/lib64/libxcb.so.1 #3 0x00007f708d459270 in QXcbEventQueue::run (this=0x55b7e3e2fcc0) at qxcbeventqueue.cpp:228 #4 0x00007f7093cf6911 in QThreadPrivate::start (arg=0x55b7e3e2fcc0) at thread/qthread_unix.cpp:329 #5 0x00007f7092ee8eb1 in start_thread () from /lib64/libpthread.so.0 #6 0x00007f7093002ccf in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x7f708f328bc0 (LWP 6307)): [KCrash Handler] #4 0x000055b7e219c61e in ProjectExplorer::eventFilter (this=0x55b7e46eb490, obj=0x55b7e4321080, event=0x7fff9a403780) at /usr/src/debug/labplot-kf5-2.8.0-2.1.x86_64/src/commonfrontend/ProjectExplorer.cpp:408 #5 0x00007f7093ed5dc3 in QCoreApplicationPrivate::sendThroughObjectEventFilters (event=<optimized out>, receiver=<optimized out>) at kernel/qcoreapplication.cpp:1189 #6 QCoreApplicationPrivate::sendThroughObjectEventFilters (receiver=receiver@entry=0x55b7e4321080, event=event@entry=0x7fff9a403780) at kernel/qcoreapplication.cpp:1178 #7 0x00007f7094a2b13e in QApplicationPrivate::notify_helper (this=this@entry=0x55b7e3e209f0, receiver=receiver@entry=0x55b7e4321080, e=e@entry=0x7fff9a403780) at kernel/qapplication.cpp:3624 #8 0x00007f7094a33f21 in QApplication::notify (this=<optimized out>, receiver=<optimized out>, e=0x7fff9a403780) at kernel/qapplication.cpp:3376 #9 0x00007f7093ed605a in QCoreApplication::notifyInternal2 (receiver=0x55b7e4321080, event=0x7fff9a403780) at ../../include/QtCore/5.15.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325 #10 0x00007f7094a852c0 in QWidgetWindow::handleDragMoveEvent (this=this@entry=0x55b7e4391fd0, event=event@entry=0x7fff9a403930) at /usr/include/c++/10/bits/atomic_base.h:420 #11 0x00007f7094a86729 in QWidgetWindow::event (this=0x55b7e4391fd0, event=0x7fff9a403930) at kernel/qwidgetwindow.cpp:336 #12 0x00007f7094a2b14f in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55b7e4391fd0, e=0x7fff9a403930) at kernel/qapplication.cpp:3630 #13 0x00007f7093ed605a in QCoreApplication::notifyInternal2 (receiver=0x55b7e4391fd0, event=0x7fff9a403930) at ../../include/QtCore/5.15.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325 #14 0x00007f709431a235 in QGuiApplicationPrivate::processDrag (w=w@entry=0x55b7e4391fd0, dropData=dropData@entry=0x7f7088005c30, p=..., supportedActions=supportedActions@entry=..., buttons=buttons@entry=..., modifiers=...) at kernel/qguiapplication.cpp:3315 #15 0x00007f70942edca9 in QWindowSystemInterface::handleDrag (window=0x55b7e4391fd0, dropData=dropData@entry=0x7f7088005c30, p=..., supportedActions=supportedActions@entry=..., buttons=buttons@entry=..., modifiers=...) at kernel/qwindowsysteminterface.cpp:931 #16 0x00007f708d46aba1 in QXcbDrag::handle_xdnd_position (this=this@entry=0x55b7e3f28df0, w=w@entry=0x55b7e4205d90, e=e@entry=0x7f708800ed40, b=..., b@entry=..., mods=..., mods@entry=...) at qxcbdrag.cpp:822 #17 0x00007f708d46b118 in QXcbDrag::handlePosition (this=0x55b7e3f28df0, w=0x55b7e4205d90, event=0x7f708800ed40) at ../../../../include/QtCore/../../src/corelib/global/qflags.h:120 #18 0x00007f708d436788 in QXcbConnection::handleXcbEvent (this=this@entry=0x55b7e3e33ce0, event=event@entry=0x7f708800ed40) at qxcbconnection.cpp:597 #19 0x00007f708d437a86 in QXcbConnection::processXcbEvents (this=0x55b7e3e33ce0, flags=...) at qxcbconnection.cpp:1003 #20 0x00007f708d45a263 in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:103 #21 0x00007f7091a2eca7 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #22 0x00007f7091a2f028 in ?? () from /usr/lib64/libglib-2.0.so.0 #23 0x00007f7091a2f0df in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #24 0x00007f7093f2d5af in QEventDispatcherGlib::processEvents (this=0x55b7e3faaf20, flags=...) at kernel/qeventdispatcher_glib.cpp:423 #25 0x00007f7093ed4a1b in QEventLoop::exec (this=this@entry=0x7fff9a403e60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141 #26 0x00007f7093edcc90 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #27 0x000055b7e1f87822 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/labplot-kf5-2.8.0-2.1.x86_64/src/kdefrontend/LabPlot.cpp:229 [Inferior 1 (process 6307) detached] Possible duplicates by query: bug 428691, bug 428459, bug 428403, bug 427575, bug 427239. Reported using DrKonqi
Thanks for reporting it. We'll fix it 2.8.1 patch release that will come soon. Please note, moving/copying objects across the the different project window is a nice feature but this is not implemented/supported yet. So, the fix will avoid the crash but won't make this drag&drop across two different windows possible.
Git commit 30c06bad1b3000069ff76a8ae7789662793d36de by Alexander Semke. Committed on 07/11/2020 at 09:58. Pushed by asemke into branch 'master'. Don't crash when doing drag&drop between different main windows. When starting the drag, we serialize the pointers of the selected/dragged objects to the mime data. When deserializing this data in the drop event in a different main window this results in invalid pointers and leads to a crash. To avoid this, we also serialize and deserialize the point of the pjoject object and add additional check for it - if the project pointers in the dropped data differ from the current project we don't accept the drop. The actual feature itself - drag&drop between different main windows - is interesting and should be supported in futur but will required a totally different serialization/deserialization of the objects. FIXED-IN: 2.8.1 M +1 -2 src/backend/core/AbstractAspect.h M +2 -12 src/backend/core/Folder.cpp M +1 -1 src/backend/core/Folder.h M +16 -0 src/backend/core/Project.cpp M +2 -0 src/backend/core/Project.h M +1 -9 src/backend/worksheet/plots/cartesian/CartesianPlot.cpp M +1 -2 src/backend/worksheet/plots/cartesian/CartesianPlot.h M +27 -8 src/commonfrontend/ProjectExplorer.cpp M +6 -2 src/commonfrontend/worksheet/WorksheetView.cpp https://invent.kde.org/education/labplot/commit/30c06bad1b3000069ff76a8ae7789662793d36de