Application: plasmashell (5.8.4)

Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.9.0+ x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
when I quit firefox, plasmashell crashed and restarted, this may be a mesa 13.0.2 issue with my Radeon (Cedar) video card.

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 0x7f7c80abbe80 (LWP 4206))]

Thread 9 (Thread 0x7f7bd3fff700 (LWP 4482)):
#0  0x00007f7c8e5fc69e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f7c89679edd in g_main_context_prepare (context=context@entry=0x7f7bcc000990, priority=priority@entry=0x7f7bd3ffecc0) at ././glib/gmain.c:3501
#2  0x00007f7c8967a91b in g_main_context_iterate (context=context@entry=0x7f7bcc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007f7c8967ab0c in g_main_context_iteration (context=0x7f7bcc000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f7c8e5fcf5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c8e5a68da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c8e3d40f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c8e3d8da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c8d4ec464 in start_thread (arg=0x7f7bd3fff700) at pthread_create.c:333
#9  0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f7bd8d4f700 (LWP 4481)):
#0  0x00007f7c8dce55dd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7c896bec40 in read (__nbytes=16, __buf=0x7f7bd8d4ebc0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007f7c896bec40 in g_wakeup_acknowledge (wakeup=0x7f7c64002780) at ././glib/gwakeup.c:210
#3  0x00007f7c8967a4be in g_main_context_check (context=context@entry=0x7f7bd4000990, max_priority=2147483647, fds=fds@entry=0x7f7bd40013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#4  0x00007f7c8967a994 in g_main_context_iterate (context=context@entry=0x7f7bd4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#5  0x00007f7c8967ab0c in g_main_context_iteration (context=0x7f7bd4000990, may_block=1) at ././glib/gmain.c:3990
#6  0x00007f7c8e5fcf5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c8e5a68da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c8e3d40f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7bd919fa35 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#10 0x00007f7c8e3d8da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c8d4ec464 in start_thread (arg=0x7f7bd8d4f700) at pthread_create.c:333
#12 0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f7c68865700 (LWP 4465)):
#0  0x00007f7c8d4f218f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7c6a1232bb in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f7c6a123117 in  () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f7c8d4ec464 in start_thread (arg=0x7f7c68865700) at pthread_create.c:333
#4  0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f7c6bbe0700 (LWP 4464)):
#0  0x00007f7c8d4f218f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7c92e592c4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f7c92e59309 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f7c8d4ec464 in start_thread (arg=0x7f7c6bbe0700) at pthread_create.c:333
#4  0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f7c75b6a700 (LWP 4462)):
#0  0x00007f7c8dce55dd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7c896bec40 in read (__nbytes=16, __buf=0x7f7c75b69bc0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007f7c896bec40 in g_wakeup_acknowledge (wakeup=0x7f7c6c002390) at ././glib/gwakeup.c:210
#3  0x00007f7c8967a4be in g_main_context_check (context=context@entry=0x7f7c64000990, max_priority=2147483647, fds=fds@entry=0x7f7c64003070, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#4  0x00007f7c8967a994 in g_main_context_iterate (context=context@entry=0x7f7c64000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#5  0x00007f7c8967ab0c in g_main_context_iteration (context=0x7f7c64000990, may_block=1) at ././glib/gmain.c:3990
#6  0x00007f7c8e5fcf5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c8e5a68da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c8e3d40f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7c90c666a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f7c8e3d8da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c8d4ec464 in start_thread (arg=0x7f7c75b6a700) at pthread_create.c:333
#12 0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f7c771e2700 (LWP 4365)):
#0  0x00007f7c896c0004 in g_mutex_unlock (mutex=0x7f7c6c000990) at ././glib/gthread-posix.c:1348
#1  0x00007f7c8967a209 in g_main_context_query (context=context@entry=0x7f7c6c000990, max_priority=2147483647, timeout=timeout@entry=0x7f7c771e1ca4, fds=fds@entry=0x7f7c6c002e70, n_fds=n_fds@entry=1) at ././glib/gmain.c:3656
#2  0x00007f7c8967a968 in g_main_context_iterate (context=context@entry=0x7f7c6c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3911
#3  0x00007f7c8967ab0c in g_main_context_iteration (context=0x7f7c6c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f7c8e5fcf5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c8e5a68da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c8e3d40f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c90c666a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f7c8e3d8da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7c8d4ec464 in start_thread (arg=0x7f7c771e2700) at pthread_create.c:333
#10 0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f7c7d9a2700 (LWP 4266)):
#0  0x00007ffe433b5949 in  ()
#1  0x00007ffe433b5bda in clock_gettime ()
#2  0x00007f7c8dcff886 in __GI___clock_gettime (clock_id=1, tp=0x7f7c7d9a1b30) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f7c8e47e021 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7c8e5fabd9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7c8e5fb185 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c8e5fc52e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c89679edd in g_main_context_prepare (context=context@entry=0x7f7c70000990, priority=priority@entry=0x7f7c7d9a1c90) at ././glib/gmain.c:3501
#8  0x00007f7c8967a91b in g_main_context_iterate (context=context@entry=0x7f7c70000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#9  0x00007f7c8967ab0c in g_main_context_iteration (context=0x7f7c70000990, may_block=1) at ././glib/gmain.c:3990
#10 0x00007f7c8e5fcf5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c8e5a68da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f7c8e3d40f3 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f7c9351c6d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007f7c8e3d8da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f7c8d4ec464 in start_thread (arg=0x7f7c7d9a2700) at pthread_create.c:333
#16 0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f7c7ed0a700 (LWP 4261)):
#0  0x00007f7c8dce956d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7c91db0150 in poll (__timeout=-1, __nfds=1, __fds=0x7f7c7ed09d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007f7c91db0150 in _xcb_conn_wait (c=c@entry=0x55bd8a93b370, cond=cond@entry=0x55bd8a93b3b0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:479
#3  0x00007f7c91db1ee9 in xcb_wait_for_event (c=0x55bd8a93b370) at ../../src/xcb_in.c:693
#4  0x00007f7c8082bb69 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#5  0x00007f7c8e3d8da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7c8d4ec464 in start_thread (arg=0x7f7c7ed0a700) at pthread_create.c:333
#7  0x00007f7c8dcf29df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f7c80abbe80 (LWP 4206)):
[KCrash Handler]
#6  0x00007f7c8e56ed10 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7c8e56eff9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7c8e576fe9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7c8e5d44e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f7c8e64b814 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7c8e55006b in QAbstractItemModel::endRemoveRows() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f7bda5c3018 in  () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#13 0x00007f7bda5c60a9 in  () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#14 0x00007f7c8e5d44e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f7c8e64b7a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f7c8e54f913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f7c8e574735 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f7c8e574934 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f7c8e576fc8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f7c8e5d44e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f7c8e64b7a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f7c8e54f913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f7bdc0b3265 in  () at /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#24 0x00007f7bdc0b4711 in  () at /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#25 0x00007f7c8e5d44e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f7c8e64b7a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f7c8e54f913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f7c8e569f10 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f7c8e5d44e9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f7c8e64b7a4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f7c8e54f913 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f7bda5dcdf3 in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) () at /usr/lib/x86_64-linux-gnu/libtaskmanager.so.6
#33 0x00007f7c8e5d485e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f7c907892e2 in KWindowSystem::windowRemoved(unsigned long long) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#35 0x00007f7c7c01ba66 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#36 0x00007f7c90781632 in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#37 0x00007f7c9078265c in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#38 0x00007f7c90782982 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#39 0x00007f7c7c01b196 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#40 0x00007f7c8e5a5a1f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f7c8082d334 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f7c8082e015 in QXcbConnection::processXcbEvents() () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#43 0x00007f7c8e5d5399 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007f7c8ee8bb2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007f7c8ee932e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f7c8e5a88f0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f7c8e5ab07d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f7c8e5fcb33 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f7c8967a7f7 in g_main_dispatch (context=0x7f7c780016f0) at ././glib/gmain.c:3203
#50 0x00007f7c8967a7f7 in g_main_context_dispatch (context=context@entry=0x7f7c780016f0) at ././glib/gmain.c:3856
#51 0x00007f7c8967aa60 in g_main_context_iterate (context=context@entry=0x7f7c780016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#52 0x00007f7c8967ab0c in g_main_context_iteration (context=0x7f7c780016f0, may_block=1) at ././glib/gmain.c:3990
#53 0x00007f7c8e5fcf3f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007f7c8e5a68da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007f7c8e5af04c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x000055bd8a2f8d92 in  ()
#57 0x00007f7c8dc2a2b1 in __libc_start_main (main=0x55bd8a2f8230, argc=2, argv=0x7ffe4335d628, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe4335d618) at ../csu/libc-start.c:291
#58 0x000055bd8a2f911a in _start ()

Reported using DrKonqi