Bug 377872

Application: plasma-discover (5.7.5)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.8.0-42-generic x86_64
Distribution: Ubuntu 16.10

-- Information about the crash:
Discover crashes on startup. Kubuntu 16.10 yakkety.

Steps to reproduce: attempt to start Discover via launcher or "update" panel icon. 
*crash*

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe170a56d40 (LWP 31627))]

Thread 7 (Thread 0x7fe13f288700 (LWP 31668)):
#0  0x00007fe16a74a029 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe16a704992 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe16a704d62 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe140e9d4e6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fe16a72c325 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe16ac316ca in start_thread (arg=0x7fe13f288700) at pthread_create.c:333
#6  0x00007fe16d4e20af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7fe13fa89700 (LWP 31667)):
#0  0x00007fe16d4d1c8d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe16a748c80 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe16a704485 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe16a704974 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe16a704aec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe16a704b31 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fe16a72c325 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fe16ac316ca in start_thread (arg=0x7fe13fa89700) at pthread_create.c:333
#8  0x00007fe16d4e20af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fe14e229700 (LWP 31660)):
#0  0x00007fe16d4d60bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe16a7049d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe16a704aec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe16e1154ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe16e0bd0fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe16dee2d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe16dee7c68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe16ac316ca in start_thread (arg=0x7fe14e229700) at pthread_create.c:333
#8  0x00007fe16d4e20af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fe1566f1700 (LWP 31640)):
#0  0x00007fe16d4d60bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe16a7049d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe16a704aec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe16e1154ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe16e0bd0fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe16dee2d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe1700c1c65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fe16dee7c68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe16ac316ca in start_thread (arg=0x7fe1566f1700) at pthread_create.c:333
#9  0x00007fe16d4e20af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fe157909700 (LWP 31638)):
#0  0x00007fe16a74a044 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe16a7048ee in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe16a704aec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe16e1154ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe16e0bd0fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe16dee2d43 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe16b4d7575 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fe16dee7c68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe16ac316ca in start_thread (arg=0x7fe157909700) at pthread_create.c:333
#9  0x00007fe16d4e20af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fe160171700 (LWP 31633)):
#0  0x00007fe16d4d60bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe168863c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe1688658d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe162d3d299 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fe16dee7c68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe16ac316ca in start_thread (arg=0x7fe160171700) at pthread_create.c:333
#6  0x00007fe16d4e20af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fe170a56d40 (LWP 31627)):
[KCrash Handler]
#6  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
#7  0x00007fe16d4113ea in __GI_abort () at abort.c:89
#8  0x00007fe16dececc1 in QMessageLogger::fatal(char const*, ...) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe1705c0a13 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fe1705c8b82 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fe1705c8f63 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007fe16e6b5f65 in QWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007fe1705fca13 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fe16ec968ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fe16ec9bd4f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fe16e0bf3b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fe16e6ab29d in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007fe16e6abe7d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007fe16e689b2b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007fe162d73660 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007fe16a7047d7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fe16a704a40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fe16a704aec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fe16e11548f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fe16e0bd0fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fe16e0c590c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x000055c1a4026699 in ?? ()
#28 0x00007fe16d3fa3f1 in __libc_start_main (main=0x55c1a4025f90, argc=1, argv=0x7fffa60aca08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffa60ac9f8) at ../csu/libc-start.c:291
#29 0x000055c1a40267ba in _start ()

Possible duplicates by query: bug 375284, bug 364721, bug 364342, bug 362635, bug 362228.

Reported using DrKonqi