Bug 375427

Application: plasma-discover (5.8.95)

Qt Version: 5.7.0
Frameworks Version: 5.31.0
Operating System: Linux 4.8.7-040807-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
Every time I open discover, it immediately crashes upon clicking in the 'search' field. I'm running the latest neon packages.

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 0x7fbfa9e458c0 (LWP 2799))]

Thread 7 (Thread 0x7fbf737fe700 (LWP 2812)):
#0  0x00007fbfa64f4b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbfa1f9139c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fbf60067c60, timeout=<optimized out>, context=0x7fbf60000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007fbfa1f9139c in g_main_context_iterate (context=context@entry=0x7fbf60000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007fbfa1f914ac in g_main_context_iteration (context=0x7fbf60000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fbfa712823b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fbfa70d2cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fbfa6ef7fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fbfa6efcb98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fbfa3e376ba in start_thread (arg=0x7fbf737fe700) at pthread_create.c:333
#9  0x00007fbfa650082d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fbf79d7e700 (LWP 2808)):
#0  0x00007fbfa64f4b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbfa1f9139c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fbf74001670, timeout=<optimized out>, context=0x7fbf74000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007fbfa1f9139c in g_main_context_iterate (context=context@entry=0x7fbf74000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007fbfa1f914ac in g_main_context_iteration (context=0x7fbf74000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fbfa712823b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fbfa70d2cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fbfa6ef7fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fbfa6efcb98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fbfa3e376ba in start_thread (arg=0x7fbf79d7e700) at pthread_create.c:333
#9  0x00007fbfa650082d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fbf8d421700 (LWP 2805)):
#0  0x00007fbfa6ef43c9 in QMutex::unlock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fbfa71279a1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fbfa1f9092d in g_main_context_prepare (context=context@entry=0x7fbf84002ed0, priority=priority@entry=0x7fbf8d420b50) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3442
#3  0x00007fbfa1f912cb in g_main_context_iterate (context=context@entry=0x7fbf84002ed0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3820
#4  0x00007fbfa1f914ac in g_main_context_iteration (context=0x7fbf84002ed0, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#5  0x00007fbfa712823b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fbfa70d2cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fbfa6ef7fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fbfa94d1aa6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fbfa6efcb98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fbfa3e376ba in start_thread (arg=0x7fbf8d421700) at pthread_create.c:333
#11 0x00007fbfa650082d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fbf8f26d700 (LWP 2803)):
#0  0x00007fbfa64f4b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbfa1f9139c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fbf80002e70, timeout=<optimized out>, context=0x7fbf80000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4135
#2  0x00007fbfa1f9139c in g_main_context_iterate (context=context@entry=0x7fbf80000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007fbfa1f914ac in g_main_context_iteration (context=0x7fbf80000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fbfa712823b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fbfa70d2cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fbfa6ef7fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fbfa7881675 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fbfa6efcb98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fbfa3e376ba in start_thread (arg=0x7fbf8f26d700) at pthread_create.c:333
#10 0x00007fbfa650082d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fbf9047e700 (LWP 2802)):
#0  0x00007fbfa1fd5ae4 in g_mutex_unlock (mutex=0x7fbf88000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1347
#1  0x00007fbfa1f91391 in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fbf880181d0, timeout=<optimized out>, context=0x7fbf88000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:4134
#2  0x00007fbfa1f91391 in g_main_context_iterate (context=context@entry=0x7fbf88000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3835
#3  0x00007fbfa1f914ac in g_main_context_iteration (context=0x7fbf88000990, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007fbfa712823b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fbfa70d2cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fbfa6ef7fb4 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fbfa9f8b7a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fbfa6efcb98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fbfa3e376ba in start_thread (arg=0x7fbf9047e700) at pthread_create.c:333
#10 0x00007fbfa650082d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fbf98a2a700 (LWP 2801)):
#0  0x00007fbfa64f4b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbfa1b26c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fbfa1b288d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fbf9af82a39 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fbfa6efcb98 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fbfa3e376ba in start_thread (arg=0x7fbf98a2a700) at pthread_create.c:333
#6  0x00007fbfa650082d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fbfa9e458c0 (LWP 2799)):
[KCrash Handler]
#6  0x00007fbfa9563a5c in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fbfa955e6b1 in QQuickItemPrivate::removeItemChangeListener(QQuickItemChangeListener*, QFlags<QQuickItemPrivate::ChangeType>) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fbf8d4a26ee in QQuickScrollBarAttached::~QQuickScrollBarAttached() () at /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#9  0x00007fbf8d4a2709 in QQuickScrollBarAttached::~QQuickScrollBarAttached() () at /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#10 0x00007fbfa70fe2e3 in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fbfa7107484 in QObject::~QObject() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fbfa95608f3 in QQuickItem::~QQuickItem() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007fbfa957b9d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fbfa70fe2e3 in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fbfa7107484 in QObject::~QObject() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fbfa95608f3 in QQuickItem::~QQuickItem() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007fbf8d55651e in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Templates.2/libqtquicktemplates2plugin.so
#18 0x00007fbfa7100a50 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fbfa955e15b in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007fbfa804689c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fbfa804e296 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fbfa70d4cf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fbfa70d73bb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fbfa7127e13 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fbfa1f911a7 in g_main_context_dispatch (context=0x7fbf940016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3154
#26 0x00007fbfa1f911a7 in g_main_context_dispatch (context=context@entry=0x7fbf940016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3769
#27 0x00007fbfa1f91400 in g_main_context_iterate (context=context@entry=0x7fbf940016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3840
#28 0x00007fbfa1f914ac in g_main_context_iteration (context=0x7fbf940016f0, may_block=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#29 0x00007fbfa712821f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fbfa70d2cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fbfa70db2fc in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x000000000040c451 in  ()
#33 0x00007fbfa641a830 in __libc_start_main (main=0x40bd30, argc=1, argv=0x7ffebdbe18f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffebdbe18e8) at ../csu/libc-start.c:291
#34 0x000000000040c6a9 in _start ()

Reported using DrKonqi