Created attachment 108296 [details] Backtrace from one such crash Systemsettings crashes when being closed in the wayland session. Qt version: 5.9.2 Steps to reproduce: 1. Start a Wayland session, and open the system settings application 2. Close the system settings application by clicking the button in the titlebar. Observed result: You will get a notification saying systemsettings has crashed. Expected result: Systemsettings should close without crashing. I have attached a backtrace of one such crash for systemsettings. Kate also crashes when closed, which suggests that the bug might be in some other component. However, since I don't know to read the backtrace, I'm not sure which component this bug should be reported under. Bug 385628 describes a similar crash in Kate, and bug 385633 describes a similar one in konsole, but I am not sure if they are due to the same issue.
Pasting inline: Thread 1 (Thread 0x7f41f79cfec0 (LWP 32406)): [KCrash Handler] #5 0x00007f41e70dfc81 in wl_proxy_create_wrapper () from /usr/lib/libwayland-client.so.0 #6 0x00007f41dbbe27ea in ?? () from /usr/lib/libEGL_mesa.so.0 #7 0x00007f41dbbcf70f in ?? () from /usr/lib/libEGL_mesa.so.0 #8 0x00007f41e0279722 in ?? () from /usr/lib/qt/plugins/wayland-graphics-integration-client/libwayland-egl.so #9 0x00007f41e0277bce in ?? () from /usr/lib/qt/plugins/wayland-graphics-integration-client/libwayland-egl.so #10 0x00007f41f5380ca9 in QOpenGLContext::makeCurrent (this=0xff41c1eb0, surface=0xff3baf7f0) at kernel/qopenglcontext.cpp:984 #11 0x00007f41f5b2de3a in deleteBackingStore (d=d@entry=0xff3add3e0) at kernel/qwidget.cpp:1885 #12 0x00007f41f5b36c22 in QWidgetPrivate::deleteTLSysExtra (this=0xff3add3e0) at kernel/qwidget.cpp:1912 #13 0x00007f41f5b3bd11 in QWidget::destroy (this=this@entry=0xff3ab9230, destroyWindow=destroyWindow@entry=true, destroySubWindows=destroySubWindows@entry=true) at kernel/qwidget.cpp:12409 #14 0x00007f41f5b435f3 in QWidget::~QWidget (this=0xff3ab9230, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1712 #15 0x00007f41f714958e in KMainWindow::~KMainWindow (this=0xff3ab9230, __in_chrg=<optimized out>) at /home/kishore/build/kxmlgui/src/kxmlgui-5.38.0/src/kmainwindow.cpp:393 #16 0x0000000ff242ad1f in ?? () #17 0x0000000ff242ae89 in ?? () #18 0x00007f41f3f6b6f1 in QObject::event (this=this@entry=0xff3ab9230, e=e@entry=0xff3aa2420) at kernel/qobject.cpp:1237 #19 0x00007f41f5b481dc in QWidget::event (this=this@entry=0xff3ab9230, event=event@entry=0xff3aa2420) at kernel/qwidget.cpp:9264 #20 0x00007f41f5c60304 in QMainWindow::event (this=this@entry=0xff3ab9230, event=event@entry=0xff3aa2420) at widgets/qmainwindow.cpp:1562 #21 0x00007f41f714bab8 in KMainWindow::event (this=this@entry=0xff3ab9230, ev=ev@entry=0xff3aa2420) at /home/kishore/build/kxmlgui/src/kxmlgui-5.38.0/src/kmainwindow.cpp:865 #22 0x00007f41f71925f6 in KXmlGuiWindow::event (this=0xff3ab9230, ev=0xff3aa2420) at /home/kishore/build/kxmlgui/src/kxmlgui-5.38.0/src/kxmlguiwindow.cpp:119 #23 0x00007f41f5b07fcc in QApplicationPrivate::notify_helper (this=this@entry=0xff3a605e0, receiver=receiver@entry=0xff3ab9230, e=e@entry=0xff3aa2420) at kernel/qapplication.cpp:3722 #24 0x00007f41f5b0faa6 in QApplication::notify (this=0x7fff0724f4f0, receiver=0xff3ab9230, e=0xff3aa2420) at kernel/qapplication.cpp:3481 #25 0x00007f41f3f3b0d0 in QCoreApplication::notifyInternal2 (receiver=0xff3ab9230, event=event@entry=0xff3aa2420) at kernel/qcoreapplication.cpp:1018 #26 0x00007f41f3f3d926 in QCoreApplication::sendEvent (event=0xff3aa2420, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233 #27 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xff3a57320) at kernel/qcoreapplication.cpp:1678 #28 0x00007f41f3f3deba in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1532 #29 0x00007f41f3f96754 in postEventSourceDispatch (s=0xff3aecce0) at kernel/qeventdispatcher_glib.cpp:276 #30 0x00007f41eb52e270 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #31 0x00007f41eb52ff69 in ?? () from /usr/lib/libglib-2.0.so.0 #32 0x00007f41eb52ffae in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 #33 0x00007f41f3f95d41 in QEventDispatcherGlib::processEvents (this=0xff3adf290, flags=...) at kernel/qeventdispatcher_glib.cpp:423 #34 0x00007f41f3f394fb in QEventLoop::exec (this=this@entry=0x7fff0724f410, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212 #35 0x00007f41f3f42548 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291 #36 0x0000000ff2427c34 in ?? () #37 0x00007f41f358bf6a in __libc_start_main () from /usr/lib/libc.so.6 #38 0x0000000ff2427cba in _start ()
*** This bug has been marked as a duplicate of bug 385805 ***