Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-43-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
Happens several times an hour, started since I added a second screen to my computer.

I'm using the AMDGPU-PRO driver from http://support.amd.com/en-us/kb-articles/Pages/AMD-Radeon-GPU-PRO-Linux-Beta-Driver%E2%80%93Release-Notes.aspx
I have an AMD rx 470.

The crash can be reproduced every time.

-- 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 0x7f96f8e958c0 (LWP 7306))]

Thread 9 (Thread 0x7f962b867700 (LWP 7321)):
#0  0x00007ffd23f629a9 in  ()
#1  0x00007ffd23f62cd5 in clock_gettime ()
#2  0x00007f96f3554fb6 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f962b866a90) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f96f3cedc16 in qt_gettime() (ts=0x7f962b866a90, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#4  0x00007f96f3cedc16 in qt_gettime() (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#5  0x00007f96f3cedc16 in qt_gettime() () at tools/qelapsedtimer_unix.cpp:165
#6  0x00007f96f3e72529 in QTimerInfoList::updateCurrentTime() (this=this@entry=0x7f9624002cd0) at kernel/qtimerinfo_unix.cpp:84
#7  0x00007f96f3e74262 in timerSourceCheck(GSource*) (src=0x7f9624002c70) at kernel/qeventdispatcher_glib.cpp:141
#8  0x00007f96f3e74262 in timerSourceCheck(GSource*) (source=0x7f9624002c70) at kernel/qeventdispatcher_glib.cpp:168
#9  0x00007f96f0261dd1 in g_main_context_check (context=context@entry=0x7f9624000990, max_priority=2147483647, fds=fds@entry=0x7f96240048c0, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3681
#10 0x00007f96f0262340 in g_main_context_iterate (context=context@entry=0x7f9624000990, 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:3837
#11 0x00007f96f02624ac in g_main_context_iteration (context=0x7f9624000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#12 0x00007f96f3e74a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f96240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007f96f3e1bdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f962b866cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f96f3c388a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007f962dd7f7d7 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#16 0x00007f96f3c3d84e in QThreadPrivate::start(void*) (arg=0x3548a80) at thread/qthread_unix.cpp:331
#17 0x00007f96f2d0f6fa in start_thread (arg=0x7f962b867700) at pthread_create.c:333
#18 0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f96c199f700 (LWP 7316)):
#0  0x00007f96f025f3c2 in g_source_iter_next (iter=iter@entry=0x7f96c199eae0, source=source@entry=0x7f96c199ead8) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:923
#1  0x00007f96f02618cb in g_main_context_prepare (context=context@entry=0x7f9638000990, priority=priority@entry=0x7f96c199eb60) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3420
#2  0x00007f96f02622cb in g_main_context_iterate (context=context@entry=0x7f9638000990, 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
#3  0x00007f96f02624ac in g_main_context_iteration (context=0x7f9638000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007f96f3e74a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f96380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f96f3e1bdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f96c199ec90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f96f3c388a4 in QThread::exec() (this=this@entry=0x266c8e0) at thread/qthread.cpp:503
#7  0x00007f96f6e98ed6 in QQuickPixmapReader::run() (this=0x266c8e0) at util/qquickpixmapcache.cpp:817
#8  0x00007f96f3c3d84e in QThreadPrivate::start(void*) (arg=0x266c8e0) at thread/qthread_unix.cpp:331
#9  0x00007f96f2d0f6fa in start_thread (arg=0x7f96c199f700) at pthread_create.c:333
#10 0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f96c3fff700 (LWP 7315)):
#0  0x00007f96f2d153a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f96f88dcbd4 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x7f96f89c4ee0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f96f88dcc19 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f96f2d0f6fa in start_thread (arg=0x7f96c3fff700) at pthread_create.c:333
#4  0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f96c9b57700 (LWP 7314)):
#0  0x00007f96f35369cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f96f02a5740 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f96c9b56ae0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007f96f02a5740 in g_wakeup_acknowledge (wakeup=0x7f96c4002390) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gwakeup.c:210
#3  0x00007f96f0261e84 in g_main_context_check (context=context@entry=0x7f96bc000990, max_priority=2147483647, fds=fds@entry=0x7f96bc003070, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3632
#4  0x00007f96f0262340 in g_main_context_iterate (context=context@entry=0x7f96bc000990, 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:3837
#5  0x00007f96f02624ac in g_main_context_iteration (context=0x7f96bc000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#6  0x00007f96f3e74a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f96bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007f96f3e1bdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f96c9b56ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f96f3c388a4 in QThread::exec() (this=this@entry=0x2335b10) at thread/qthread.cpp:503
#9  0x00007f96f65013c5 in QQmlThreadPrivate::run() (this=0x2335b10) at qml/ftw/qqmlthread.cpp:141
#10 0x00007f96f3c3d84e in QThreadPrivate::start(void*) (arg=0x2335b10) at thread/qthread_unix.cpp:331
#11 0x00007f96f2d0f6fa in start_thread (arg=0x7f96c9b57700) at pthread_create.c:333
#12 0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f96d0bf7700 (LWP 7313)):
#0  0x00007f96f02a6ae4 in g_mutex_unlock (mutex=0x7f96c4000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1347
#1  0x00007f96f02624b6 in g_main_context_iteration (context=0x7f96c4000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3902
#2  0x00007f96f3e74a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f96c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007f96f3e1bdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f96d0bf6ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f96f3c388a4 in QThread::exec() (this=this@entry=0x22677f0) at thread/qthread.cpp:503
#5  0x00007f96f65013c5 in QQmlThreadPrivate::run() (this=0x22677f0) at qml/ftw/qqmlthread.cpp:141
#6  0x00007f96f3c3d84e in QThreadPrivate::start(void*) (arg=0x22677f0) at thread/qthread_unix.cpp:331
#7  0x00007f96f2d0f6fa in start_thread (arg=0x7f96d0bf7700) at pthread_create.c:333
#8  0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f96d3fff700 (LWP 7312)):
#0  0x00007f96f350b8dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f96f353d4d4 in usleep (useconds=<optimized out>) at ../sysdeps/posix/usleep.c:32
#2  0x00007f96dac38f20 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#3  0x00007f96da389f22 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#4  0x00007f96da389f75 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#5  0x00007f96f2d0f6fa in start_thread (arg=0x7f96d3fff700) at pthread_create.c:333
#6  0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f96e195f700 (LWP 7311)):
#0  0x00007f96f02a6ac9 in g_mutex_lock (mutex=mutex@entry=0x7f96d4000990) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gthread-posix.c:1335
#1  0x00007f96f0261ddc in g_main_context_check (context=context@entry=0x7f96d4000990, max_priority=2147483647, fds=fds@entry=0x7f96d4003070, n_fds=n_fds@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3683
#2  0x00007f96f0262340 in g_main_context_iterate (context=context@entry=0x7f96d4000990, 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:3837
#3  0x00007f96f02624ac in g_main_context_iteration (context=0x7f96d4000990, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#4  0x00007f96f3e74a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f96d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f96f3e1bdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f96e195ece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f96f3c388a4 in QThread::exec() (this=this@entry=0x1e671a0) at thread/qthread.cpp:503
#7  0x00007f96f65013c5 in QQmlThreadPrivate::run() (this=0x1e671a0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f96f3c3d84e in QThreadPrivate::start(void*) (arg=0x1e671a0) at thread/qthread_unix.cpp:331
#9  0x00007f96f2d0f6fa in start_thread (arg=0x7f96e195f700) at pthread_create.c:333
#10 0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f96e4197700 (LWP 7309)):
#0  0x00007f96f353ae8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f96f7649c62 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f96e4196c00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007f96f7649c62 in _xcb_conn_wait (c=c@entry=0x1d90700, cond=cond@entry=0x1d90740, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x00007f96f764b8d7 in xcb_wait_for_event (c=0x1d90700) at ../../src/xcb_in.c:693
#4  0x00007f96e6541629 in QXcbEventReader::run() (this=0x1d9ba40) at qxcbconnection.cpp:1253
#5  0x00007f96f3c3d84e in QThreadPrivate::start(void*) (arg=0x1d9ba40) at thread/qthread_unix.cpp:331
#6  0x00007f96f2d0f6fa in start_thread (arg=0x7f96e4197700) at pthread_create.c:333
#7  0x00007f96f3546b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f96f8e958c0 (LWP 7306)):
[KCrash Handler]
#6  0x00007f96daed6e17 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#7  0x00007f96daed8542 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#8  0x00007f96daed879a in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#9  0x00007f96da375f1c in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#10 0x00007f96da2f3d01 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#11 0x00007f96da367be8 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#12 0x00007f96da368e34 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#13 0x00007f96da34cec3 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#14 0x00007f96d9bec3f4 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#15 0x00007f96d9b9c996 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#16 0x00007f96d99bc312 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#17 0x00007f96d9eaba67 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#18 0x00007f96d9ed3576 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#19 0x00007f96d9ee8581 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#20 0x00007f96d9ecf1bb in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#21 0x00007f96d9ed1b8e in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#22 0x00007f96d8fb4df9 in  () at /usr/lib/x86_64-linux-gnu/dri/amdgpu_dri.so
#23 0x00007f96f6ec9339 in QSGBatchRenderer::Renderer::renderBatches() (height=<optimized out>, width=<optimized out>, y=<optimized out>, x=<optimized out>, this=0x25f9498) at /usr/include/x86_64-linux-gnu/qt5/QtGui/qopenglfunctions.h:1060
#24 0x00007f96f6ec9339 in QSGBatchRenderer::Renderer::renderBatches() (this=this@entry=0x25f93c0) at scenegraph/coreapi/qsgbatchrenderer.cpp:2460
#25 0x00007f96f6ecee82 in QSGBatchRenderer::Renderer::render() (this=<optimized out>) at scenegraph/coreapi/qsgbatchrenderer.cpp:2681
#26 0x00007f96f6edab6f in QSGRenderer::renderScene(QSGBindable const&) (this=0x25f93c0, bindable=...) at scenegraph/coreapi/qsgrenderer.cpp:208
#27 0x00007f96f6edb3bb in QSGRenderer::renderScene(unsigned int) (this=<optimized out>, fboId=<optimized out>) at scenegraph/coreapi/qsgrenderer.cpp:168
#28 0x00007f96f6eeb87e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) (this=0x1ffbfc0, renderer=0x25f93c0, fboId=<optimized out>) at scenegraph/qsgcontext.cpp:558
#29 0x00007f96f6f360db in QQuickWindowPrivate::renderSceneGraph(QSize const&) (this=this@entry=0x23f65a0, size=...) at items/qquickwindow.cpp:383
#30 0x00007f96f6f0619b in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) (this=this@entry=0x2217370, window=0x267e9e0) at scenegraph/qsgrenderloop.cpp:378
#31 0x00007f96f6f072a1 in QSGGuiThreadRenderLoop::event(QEvent*) (this=0x2217370, e=<optimized out>) at scenegraph/qsgrenderloop.cpp:474
#32 0x00007f96f492305c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x1d826a0, receiver=receiver@entry=0x2217370, e=e@entry=0x7ffd23ef4d20) at kernel/qapplication.cpp:3716
#33 0x00007f96f4928516 in QApplication::notify(QObject*, QEvent*) (this=0x7ffd23ef50c0, receiver=0x2217370, e=0x7ffd23ef4d20) at kernel/qapplication.cpp:3499
#34 0x00007f96f3e1e62b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffd23ef50c0, receiver=0x2217370, event=event@entry=0x7ffd23ef4d20) at kernel/qcoreapplication.cpp:965
#35 0x00007f96f3e7389d in QTimerInfoList::activateTimers() (event=0x7ffd23ef4d20, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#36 0x00007f96f3e7389d in QTimerInfoList::activateTimers() (this=0x1dc9330) at kernel/qtimerinfo_unix.cpp:637
#37 0x00007f96f3e73dd9 in idleTimerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#38 0x00007f96f3e73dd9 in idleTimerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:224
#39 0x00007f96f02621a7 in g_main_context_dispatch (context=0x7f96dc0016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3154
#40 0x00007f96f02621a7 in g_main_context_dispatch (context=context@entry=0x7f96dc0016f0) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3769
#41 0x00007f96f0262400 in g_main_context_iterate (context=context@entry=0x7f96dc0016f0, 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
#42 0x00007f96f02624ac in g_main_context_iteration (context=0x7f96dc0016f0, may_block=may_block@entry=1) at /build/glib2.0-7IO_Yw/glib2.0-2.48.1/./glib/gmain.c:3901
#43 0x00007f96f3e74a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1dbdeb0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#44 0x00007f96f3e1bdea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffd23ef4f60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#45 0x00007f96f3e23e8c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#46 0x00007f96f4159c3c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1542
#47 0x00007f96f491f495 in QApplication::exec() () at kernel/qapplication.cpp:2976
#48 0x0000000000432d4a in main(int, char**) (argc=3, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181

Reported using DrKonqi