Bug 365819

Summary:	Crash when dragging tabs on Konsole
Product:	[Applications] konsole	Reporter:	Sebastian Oliva <tian2992>
Component:	general	Assignee:	Konsole Bugs <konsole-bugs-null>
Status:	RESOLVED FIXED
Severity:	major	CC:	nate, tian2992
Priority:	NOR	Keywords:	drkonqi, investigated
Version First Reported In:	15.12.3
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Sebastian Oliva 2016-07-18 16:34:14 UTC

Application: konsole (15.12.3)

Qt Version: 5.5.1
Operating System: Linux 4.1.20-11-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

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

1. Had a lot of tabs open (~15)
2. Started dragging tabs between windows.
3. Crashed :(

The crash can be reproduced sometimes.

-- Backtrace:
Application: Konsole (konsole), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc8c1b26840 (LWP 3684))]

Thread 2 (Thread 0x7fc8aa800700 (LWP 3685)):
#0  0x00007fc8c145dbbd in poll () at /lib64/libc.so.6
#1  0x00007fc8b8bb9422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fc8b8bbb00f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fc8acb5d3c9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fc8bd82c32f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc8b87960a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fc8c1465fed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fc8c1b26840 (LWP 3684)):
[KCrash Handler]
#6  0x00007fc8acb678b5 in  () at /usr/lib64/libQt5XcbQpa.so.5
#7  0x00007fc8bdf4e799 in QBasicDrag::eventFilter(QObject*, QEvent*) () at /usr/lib64/libQt5Gui.so.5
#8  0x00007fc8bda07fc3 in QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc8be6ebe08 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x00007fc8be6f0cc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#11 0x00007fc8bda07e95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#12 0x00007fc8bdf59964 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib64/libQt5Gui.so.5
#13 0x00007fc8bdf5b175 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#14 0x00007fc8bdf40268 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#15 0x00007fc8acb88200 in  () at /usr/lib64/libQt5XcbQpa.so.5
#16 0x00007fc8b8062c84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#17 0x00007fc8b8062ed8 in  () at /usr/lib64/libglib-2.0.so.0
#18 0x00007fc8b8062f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#19 0x00007fc8bda5ed6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#20 0x00007fc8bda05d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#21 0x00007fc8bdf4eae2 in QBasicDrag::drag(QDrag*) () at /usr/lib64/libQt5Gui.so.5
#22 0x00007fc8bdf65a59 in QDragManager::drag(QDrag*) () at /usr/lib64/libQt5Gui.so.5
#23 0x00007fc8bdf64e0c in QDrag::exec(QFlags<Qt::DropAction>, Qt::DropAction) () at /usr/lib64/libQt5Gui.so.5
#24 0x00007fc8c111f3ba in  () at /usr/lib64/libkonsoleprivate.so.15
#25 0x00007fc8bda3773f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#26 0x00007fc8c1135bee in  () at /usr/lib64/libkonsoleprivate.so.15
#27 0x00007fc8c11209ef in  () at /usr/lib64/libkonsoleprivate.so.15
#28 0x00007fc8be72c0d8 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#29 0x00007fc8be88bf93 in QTabBar::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007fc8be6ebe7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#31 0x00007fc8be6f12cb in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#32 0x00007fc8bda07e95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#33 0x00007fc8be6f0191 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib64/libQt5Widgets.so.5
#34 0x00007fc8be74513b in  () at /usr/lib64/libQt5Widgets.so.5
#35 0x00007fc8be747353 in  () at /usr/lib64/libQt5Widgets.so.5
#36 0x00007fc8be6ebe7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#37 0x00007fc8be6f0cc8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#38 0x00007fc8bda07e95 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#39 0x00007fc8bdf59964 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib64/libQt5Gui.so.5
#40 0x00007fc8bdf5b175 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#41 0x00007fc8bdf40268 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#42 0x00007fc8acb88200 in  () at /usr/lib64/libQt5XcbQpa.so.5
#43 0x00007fc8b8062c84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#44 0x00007fc8b8062ed8 in  () at /usr/lib64/libglib-2.0.so.0
#45 0x00007fc8b8062f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#46 0x00007fc8bda5ed6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#47 0x00007fc8bda05d53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#48 0x00007fc8bda0d8f6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#49 0x00007fc8c1751e87 in kdemain () at /usr/lib64/libkdeinit5_konsole.so
#50 0x00007fc8c13a2b05 in __libc_start_main () at /lib64/libc.so.6
#51 0x00000000004007ee in _start ()

Reported using DrKonqi

Comment 1 Nate Graham 2018-10-20 23:52:00 UTC

The whole tab handling code was rewritten recently with an eye towards solving these kinds of issues. Please file a new bug for new crashes seen in the upcoming 18.12 release. Thanks!