Bug 377989

Summary:	Dicover crashes when browsing
Product:	[Applications] Discover	Reporter:	Erik I <erik.itland>
Component:	discover	Assignee:	Aleix Pol <aleixpol>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	admin
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.9.3
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Erik I 2017-03-23 17:37:26 UTC

Application: plasma-discover (5.9.3)

Qt Version: 5.7.1
Frameworks Version: 5.32.0
Operating System: Linux 4.4.0-66-generic x86_64
Distribution: KDE neon User Edition 5.9

-- Information about the crash:
- What I was doing when the application crashed:
Browsing around, searching, then clicking on packages. I restarted and continued browsing only to see it crash again.
- Unusual behavior I noticed:
After crashing and while I was restarting I got a message that Package Deamon had crashed. This happened at least twice.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2547a498c0 (LWP 11894))]

Thread 7 (Thread 0x7f25158fc700 (LWP 11918)):
#0  0x00007f2543d7fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f253f15638c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f24ec0acfc0, timeout=<optimized out>, context=0x7f24ec000990) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:4135
#2  0x00007f253f15638c in g_main_context_iterate (context=context@entry=0x7f24ec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3835
#3  0x00007f253f15649c in g_main_context_iteration (context=0x7f24ec000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007f25449a875b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f25449530ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2544782f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2544787b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f25412116ba in start_thread (arg=0x7f25158fc700) at pthread_create.c:333
#9  0x00007f2543d8b82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f25177ac700 (LWP 11915)):
#0  0x00007f2543d7fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f253f15638c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f2510001670, timeout=<optimized out>, context=0x7f2510000990) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:4135
#2  0x00007f253f15638c in g_main_context_iterate (context=context@entry=0x7f2510000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3835
#3  0x00007f253f15649c in g_main_context_iteration (context=0x7f2510000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007f25449a875b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f25449530ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2544782f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2544787b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f25412116ba in start_thread (arg=0x7f25177ac700) at pthread_create.c:333
#9  0x00007f2543d8b82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f2526c82700 (LWP 11899)):
#0  0x00007f253f153407 in g_source_iter_next (iter=iter@entry=0x7f2526c81ad0, source=source@entry=0x7f2526c81ac8) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:952
#1  0x00007f253f155cea in g_main_context_check (context=context@entry=0x7f251c002ed0, max_priority=2147483647, fds=fds@entry=0x7f251c01b4c0, n_fds=n_fds@entry=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3661
#2  0x00007f253f156330 in g_main_context_iterate (context=context@entry=0x7f251c002ed0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3837
#3  0x00007f253f15649c in g_main_context_iteration (context=0x7f251c002ed0, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007f25449a875b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f25449530ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2544782f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f25470c9fc6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f2544787b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f25412116ba in start_thread (arg=0x7f2526c82700) at pthread_create.c:333
#10 0x00007f2543d8b82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f252ca74700 (LWP 11897)):
#0  0x00007f2543d7fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f253f15638c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f2520002e70, timeout=<optimized out>, context=0x7f2520000990) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:4135
#2  0x00007f253f15638c in g_main_context_iterate (context=context@entry=0x7f2520000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3835
#3  0x00007f253f15649c in g_main_context_iteration (context=0x7f2520000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007f25449a875b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f25449530ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2544782f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f25450f9bf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f2544787b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f25412116ba in start_thread (arg=0x7f252ca74700) at pthread_create.c:333
#10 0x00007f2543d8b82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f252dc85700 (LWP 11896)):
#0  0x00007f2543d7fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f253f15638c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f2528018240, timeout=<optimized out>, context=0x7f2528000990) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:4135
#2  0x00007f253f15638c in g_main_context_iterate (context=context@entry=0x7f2528000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3835
#3  0x00007f253f15649c in g_main_context_iteration (context=0x7f2528000990, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007f25449a875b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f25449530ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2544782f64 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2547b8e735 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f2544787b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f25412116ba in start_thread (arg=0x7f252dc85700) at pthread_create.c:333
#10 0x00007f2543d8b82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f25362ac700 (LWP 11895)):
#0  0x00007f2543d7fb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f253ecebc62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f253eced8d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2538804d79 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f2544787b48 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f25412116ba in start_thread (arg=0x7f25362ac700) at pthread_create.c:333
#6  0x00007f2543d8b82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2547a498c0 (LWP 11894)):
[KCrash Handler]
#6  0x00007f254714b144 in QQuickItem::isVisible() const () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f254714b5a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f2547156863 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f2547156aa1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f25458b7ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f25458bf8c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f25449550c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f254714b5c1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f2547156863 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f2547156aa1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f25458b7ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f25458bf8c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f25449550c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f254714b5c1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f2547156863 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f2547156aa1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f25458b7ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f25458bf8c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f25449550c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f254714b5c1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f2547156863 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f2547156aa1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007f25458b7ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f25458bf8c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f25449550c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f2547166fe2 in QQuickWindow::sendEvent(QQuickItem*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#32 0x00007f254716730f in QQuickWindow::keyPressEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#33 0x00007f2545328735 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007f254716ef15 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f25458b7ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f25458bf8c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f25449550c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f2545319088 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#39 0x00007f254531e485 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#40 0x00007f25452fc32b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f253883b270 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f253f156197 in g_main_context_dispatch (context=0x7f25300016f0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3154
#43 0x00007f253f156197 in g_main_context_dispatch (context=context@entry=0x7f25300016f0) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3769
#44 0x00007f253f1563f0 in g_main_context_iterate (context=context@entry=0x7f25300016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3840
#45 0x00007f253f15649c in g_main_context_iteration (context=0x7f25300016f0, may_block=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#46 0x00007f25449a873f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f25449530ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f254495b6cc in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x000000000040d601 in main(int, char**) (argc=1, argv=<optimized out>) at /workspace/build/discover/main.cpp:141

Reported using DrKonqi

Comment 1 Dan Leinir Turthra Jensen 2017-04-20 09:33:04 UTC

Thank you very much for the report! It helped us track down the root cause of the problem. Closing as duplicate, but don't take that as a snub, it's really helpful that you sent us both a good backtrace and the description of your actions.

*** This bug has been marked as a duplicate of bug 378339 ***