Application: plasmashell (5.10.5)

Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.13.0-36-generic x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
- What I was doing when the application crashed:
Browsing the web,  firefox and konsole running
Happens regularly, maybe once every hour. Desjtop wallpaper is a slideshow.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f33e4e7dfc0 (LWP 2401))]

Thread 15 (Thread 0x7f3300aa5700 (LWP 2652)):
#0  0x00007f33de4a5951 in __GI___poll (fds=0x7f32f4000b10, nfds=1, timeout=1593030) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f33d90d8169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f33d90d827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f33dede549b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f33ded8ae3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f33debaa3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f32edfe9717 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f33debaf29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f33ddd457fc in start_thread (arg=0x7f3300aa5700) at pthread_create.c:465
#9  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f331ffff700 (LWP 2614)):
#0  0x00007f33d911d5b9 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f33d90d7b7c in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f33d90d8110 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f33d90d827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f33dede549b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f33ded8ae3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f33debaa3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f33e28a0846 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f33debaf29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f33ddd457fc in start_thread (arg=0x7f331ffff700) at pthread_create.c:465
#10 0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f3301f47700 (LWP 2612)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d0686d95b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d0686d9568, cond=0x55d0686d9590) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d0686d9590, mutex=0x55d0686d9568) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f3301f47700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f332cd28700 (LWP 2604)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d068419360) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d068419310, cond=0x55d068419338) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d068419338, mutex=0x55d068419310) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f332cd28700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f332d529700 (LWP 2603)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d068419364) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d068419310, cond=0x55d068419338) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d068419338, mutex=0x55d068419310) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f332d529700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f332dd2a700 (LWP 2602)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d06841927c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d068419228, cond=0x55d068419250) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d068419250, mutex=0x55d068419228) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f332dd2a700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f332e52b700 (LWP 2601)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d06841927c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d068419228, cond=0x55d068419250) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d068419250, mutex=0x55d068419228) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f332e52b700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f332ed2c700 (LWP 2600)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d068419278) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d068419228, cond=0x55d068419250) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d068419250, mutex=0x55d068419228) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f332ed2c700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f332f767700 (LWP 2599)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d0681bb7b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d0681bb760, cond=0x55d0681bb788) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d0681bb788, mutex=0x55d0681bb760) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f332f767700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f332ff68700 (LWP 2598)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d06841a7f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d06841a7a0, cond=0x55d06841a7c8) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x55d06841a7c8, mutex=0x55d06841a7a0) at pthread_cond_wait.c:655
#3  0x00007f33bc60224b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f33bc602167 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f33ddd457fc in start_thread (arg=0x7f332ff68700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f33bdfa2700 (LWP 2597)):
#0  0x00007f33ddd4c072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f33e4843fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f33ddd4c072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f33e4843f68, cond=0x7f33e4843f90) at pthread_cond_wait.c:502
#2  0x00007f33ddd4c072 in __pthread_cond_wait (cond=0x7f33e4843f90, mutex=0x7f33e4843f68) at pthread_cond_wait.c:655
#3  0x00007f33e454fbd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f33e454fc19 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f33ddd457fc in start_thread (arg=0x7f33bdfa2700) at pthread_create.c:465
#6  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f33bffff700 (LWP 2572)):
#0  0x00007f33d911d5d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f33d90d7698 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f33d90d809b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f33d90d827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f33dede549b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f33ded8ae3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f33debaa3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f33e1d0af45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f33debaf29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f33ddd457fc in start_thread (arg=0x7f33bffff700) at pthread_create.c:465
#10 0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f33c65a6700 (LWP 2539)):
#0  0x00007f33de4a5951 in __GI___poll (fds=0x7f33b80029e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f33d90d8169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f33d90d827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f33dede549b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f33ded8ae3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f33debaa3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f33e1d0af45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f33debaf29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f33ddd457fc in start_thread (arg=0x7f33c65a6700) at pthread_create.c:465
#9  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f33c7de2700 (LWP 2469)):
#0  0x00007f33de4a5951 in __GI___poll (fds=0x7f33c0012550, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f33d90d8169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f33d90d827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f33dede549b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f33ded8ae3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f33debaa3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f33df261e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f33debaf29d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f33ddd457fc in start_thread (arg=0x7f33c7de2700) at pthread_create.c:465
#9  0x00007f33de4b1b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f33e4e7dfc0 (LWP 2401)):
[KCrash Handler]
#6  0x00007f33bc4f050e in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#7  0x00007f33bc4ef019 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#8  0x00007f33bc4f6e34 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#9  0x00007f33e28e1378 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f33e28e6cac in QSGBatchRenderer::Renderer::render() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f33e28d766d in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f33e28d7b2b in QSGRenderer::renderScene(unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f33e2911f50 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f33e296e9b8 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f33e2904399 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f33e2978d66 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007f33dfd9146c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f33dfd98d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f33ded8cde8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f33df5e1b01 in QWindowPrivate::deliverUpdateRequest() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#21 0x00007f33df5e2019 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#22 0x00007f33e2978d05 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007f33dfd9146c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f33dfd98d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f33ded8cde8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f33dede491e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f33dede50e1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f33d90d7fb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f33d90d81f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f33d90d827c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f33dede547f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f33ded8ae3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f33ded93da4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x000055d0662fccc2 in  ()
#35 0x00007f33de3be1c1 in __libc_start_main (main=0x55d0662fc160, argc=1, argv=0x7ffd2ec41f38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd2ec41f28) at ../csu/libc-start.c:308
#36 0x000055d0662fd03a in _start ()

Reported using DrKonqi