Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-22-generic i686
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I put the web widget and the screen frezzes and plasma crashes a little bit after.


- Unusual behavior I noticed:
Black squares on the screen

- Custom settings of the application:
Some widgets two launchers to make KDE like Unity

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1b4f800 (LWP 1906))]

Thread 13 (Thread 0xb1716b40 (LWP 1909)):
#0  0xb777fc31 in __kernel_vsyscall ()
#1  0xb4dabf8f in poll () at ../sysdeps/unix/syscall-template.S:84
#2  0xb712241d in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#3  0xb712459b in xcb_wait_for_event () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4  0xb1857273 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#5  0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb4c5e2b5 in start_thread (arg=0xb1716b40) at pthread_create.c:333
#7  0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 12 (Thread 0xaf01db40 (LWP 1913)):
#0  0xb44913dd in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb444aa2c in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb444aff1 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb68f4aff in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#9  0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb4c5e2b5 in start_thread (arg=0xaf01db40) at pthread_create.c:333
#11 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 11 (Thread 0xabd8db40 (LWP 1921)):
#0  0xb4c64af5 in __GI___pthread_getspecific (key=3) at pthread_getspecific.c:65
#1  0xb4490f82 in g_private_get () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb447249c in g_thread_self () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb4449e8b in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb444aef8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb68f4aff in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#11 0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#12 0xb4c5e2b5 in start_thread (arg=0xabd8db40) at pthread_create.c:333
#13 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 10 (Thread 0xaaa22b40 (LWP 1922)):
#0  0xb777f996 in __vdso_clock_gettime ()
#1  0xb4dc33c2 in __GI___clock_gettime (clock_id=1, tp=0xaaa21f24) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb5127338 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#3  0xb52b63e2 in QTimerInfoList::updateCurrentTime() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#4  0xb52b6904 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb52b7ec9 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb444a51b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb444af64 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#11 0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#12 0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#13 0xb68f4aff in ?? () from /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#14 0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#15 0xb4c5e2b5 in start_thread (arg=0xaaa22b40) at pthread_create.c:333
#16 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 9 (Thread 0xa98f9b40 (LWP 1923)):
#0  0xb777fc31 in __kernel_vsyscall ()
#1  0xb4c63a8c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S:187
#2  0xb4dc28cd in __pthread_cond_wait (cond=0xb76ee8d0, mutex=0xb76ee8b8) at forward.c:149
#3  0xb75b6a2c in ?? () from /usr/lib/i386-linux-gnu/libQt5Script.so.5
#4  0xb75b6a6c in ?? () from /usr/lib/i386-linux-gnu/libQt5Script.so.5
#5  0xb4c5e2b5 in start_thread (arg=0xa98f9b40) at pthread_create.c:333
#6  0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 8 (Thread 0xa55f0b40 (LWP 1925)):
#0  0xb777fc31 in __kernel_vsyscall ()
#1  0xb4c63a8c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S:187
#2  0xb4dc28cd in __pthread_cond_wait (cond=0xa82e2d54, mutex=0xa82e2d3c) at forward.c:149
#3  0xa76474ea in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#4  0xa764753c in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#5  0xb4c5e2b5 in start_thread (arg=0xa55f0b40) at pthread_create.c:333
#6  0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 7 (Thread 0xa4cc1b40 (LWP 1926)):
#0  0xb777fc31 in __kernel_vsyscall ()
#1  0xb4dabf8f in poll () at ../sysdeps/unix/syscall-template.S:84
#2  0xb4459a60 in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb444b05c in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb5083ff8 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#11 0xb4c5e2b5 in start_thread (arg=0xa4cc1b40) at pthread_create.c:333
#12 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 6 (Thread 0xa44c0b40 (LWP 1927)):
#0  0xb777fc31 in __kernel_vsyscall ()
#1  0xb4c63a8c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S:187
#2  0xb4dc28cd in __pthread_cond_wait (cond=0xa4cf9bf4, mutex=0xa4cf9bdc) at forward.c:149
#3  0xa76760bc in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#4  0xa63b71fe in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#5  0xa63b747d in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#6  0xa765e6b2 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#7  0xa7675ac1 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#8  0xb4c5e2b5 in start_thread (arg=0xa44c0b40) at pthread_create.c:333
#9  0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 5 (Thread 0xa3cbfb40 (LWP 1928)):
#0  0xb4490f6c in g_private_get () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb447249c in g_thread_self () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb4449e8b in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb444aef8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb5083ff8 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#11 0xb4c5e2b5 in start_thread (arg=0xa3cbfb40) at pthread_create.c:333
#12 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 4 (Thread 0xa331cb40 (LWP 1935)):
#0  0xb52b8231 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#1  0xb444aa1a in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb444aff1 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb6cd47a9 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#9  0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb4c5e2b5 in start_thread (arg=0xa331cb40) at pthread_create.c:333
#11 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 3 (Thread 0xa2732b40 (LWP 1936)):
#0  0xb777f996 in __vdso_clock_gettime ()
#1  0xb4dc33c2 in __GI___clock_gettime (clock_id=1, tp=0xa2731f24) at ../sysdeps/unix/clock_gettime.c:115
#2  0xb5127338 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#3  0xb52b63e2 in QTimerInfoList::updateCurrentTime() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#4  0xb52b6904 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb52b7ec9 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb444a51b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb444af64 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#11 0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#12 0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#13 0xb5083ff8 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#14 0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#15 0xb4c5e2b5 in start_thread (arg=0xa2732b40) at pthread_create.c:333
#16 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 2 (Thread 0x9a41fb40 (LWP 1943)):
#0  0xb444aa06 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb444aff1 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb52b8b14 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#4  0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb5083f1d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0x9a631980 in KCupsConnection::run() () from /usr/lib/i386-linux-gnu/libkcupslib.so
#8  0xb508943b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb4c5e2b5 in start_thread (arg=0x9a41fb40) at pthread_create.c:333
#10 0xb4db616e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114

Thread 1 (Thread 0xb1b4f800 (LWP 1906)):
[KCrash Handler]
#7  0xa64a53d4 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#8  0xa64aa383 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#9  0xa64aa878 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#10 0xa62dc6d2 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#11 0xa64bcdb7 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#12 0xa5eafe1b in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#13 0xb6d03a93 in QSGBatchRenderer::Renderer::renderRenderNode(QSGBatchRenderer::Batch*) () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#14 0xb6d0668a in QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#15 0xb6d0bf48 in QSGBatchRenderer::Renderer::render() () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#16 0xb6d181be in QSGRenderer::renderScene(QSGBindable const&) () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#17 0xb6d18c80 in QSGRenderer::renderScene(unsigned int) () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#18 0xb6d2abd9 in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#19 0xb6d7a942 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#20 0xb6d47093 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#21 0xb6d48708 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#22 0xb5bed15a in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#23 0xb5bf281c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#24 0xb526081f in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#25 0xb52b783c in QTimerInfoList::activateTimers() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#26 0xb52b7de9 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#27 0xb444ae29 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb444b0c9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0xb444b194 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#30 0xb52b8af3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#31 0xb188c8e1 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#32 0xb525d953 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#33 0xb525ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#34 0xb5266385 in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#35 0xb5585931 in QGuiApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#36 0xb5be9024 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#37 0x08071eee in main ()

Possible duplicates by query: bug 348113, bug 346554, bug 341666.

Reported using DrKonqi