Bug 416215

Summary:	plasmashell crahsed beim login.
Product:	[Plasma] plasmashell	Reporter:	kde
Component:	general	Assignee:	David Edmundson <kde>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	matheus-catarino, plasma-bugs
Priority:	NOR	Keywords:	drkonqi
Version:	5.16.5
Target Milestone:	1.0
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description kde 2020-01-13 19:04:31 UTC

Application: plasmashell (5.16.5)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-26-generic x86_64
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed:

loging in. same for all users
update before to latest version on 19.10

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 0x7f8febd86880 (LWP 9208))]

Thread 9 (Thread 0x7f8fc37fe700 (LWP 9240)):
#0  0x00007f8fee016c3d in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8fedfc9fca in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8fedfca96b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8fedfcab73 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8fef8406c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8fef7e763b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8fef620a75 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8fef621cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f8fc3fff700 (LWP 9239)):
#0  0x00007f8fef299c2f in __GI___poll (fds=0x7f8fbc0025e0, nfds=1, timeout=3449775) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8fedfcaa3e in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8fedfcab73 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8fef8406c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8fef7e763b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8fef620a75 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8fd0c5501c in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f8fef621cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f8fd3138700 (LWP 9220)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555b5a30930) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555b5a308e0, cond=0x5555b5a30908) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5555b5a30908, mutex=0x5555b5a308e0) at pthread_cond_wait.c:638
#3  0x00007f8fef627def in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8fef627ee1 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8ff14407b9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f8ff1440a1a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f8fef621cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f8fd3a72700 (LWP 9219)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555b5d58a90) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555b5d58a40, cond=0x5555b5d58a68) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5555b5d58a68, mutex=0x5555b5d58a40) at pthread_cond_wait.c:638
#3  0x00007f8fef627def in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8fef627ee1 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8ff14407b9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f8ff1440a1a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f8fef621cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8fdac4f700 (LWP 9218)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555b5b899cc) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555b5b89978, cond=0x5555b5b899a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5555b5b899a0, mutex=0x5555b5b89978) at pthread_cond_wait.c:638
#3  0x00007f8fdb2c097b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f8fdb2c059b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f8fe942f700 (LWP 9211)):
#0  0x00007f8fedfca469 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8fedfca9e2 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8fedfcab73 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8fef8406c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8fef7e763b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8fef620a75 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8ff10e3319 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8fef621cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8fea694700 (LWP 9210)):
#0  0x00007f8fef299c2f in __GI___poll (fds=0x7f8fdc0029e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8fedfcaa3e in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8fedfcab73 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8fef8406c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8fef7e763b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8fef620a75 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8ff0105efa in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f8fef621cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8feb48e700 (LWP 9209)):
#0  0x00007f8fef299c2f in __GI___poll (fds=0x7f8feb48dc28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8ff1837917 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8ff183953a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8febc3f288 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8fef621cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8feeaa4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f8fef2a6323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8febd86880 (LWP 9208)):
[KCrash Handler]
#6  0x00007f8fd0c7473a in JobModel::updateJob(int, KCupsJob const&) () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f8fd0c767e8 in JobModel::insertJob(int, KCupsJob const&) () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f8fd0c76ca9 in JobModel::getJobFinished(KCupsRequest*) () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f8fef814eba in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8ff0384a86 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f8ff038de00 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f8fef7e8a9a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8fef7eb718 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f8fef8410a7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f8fedfca84d in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f8fedfcaad0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f8fedfcab73 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f8fef8406a5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f8fef7e763b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f8fef7ef3a6 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00005555b460e774 in ?? ()
#22 0x00007f8fef1ab1e3 in __libc_start_main (main=0x5555b460dc20, argc=1, argv=0x7fff5a6f4758, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff5a6f4748) at ../csu/libc-start.c:308
#23 0x00005555b460ebfe in _start ()
[Inferior 1 (process 9208) detached]

Possible duplicates by query: bug 416088, bug 414883, bug 414882, bug 414652, bug 414083.

Reported using DrKonqi

Comment 1 Matheus Catarino 2020-01-15 10:51:06 UTC

Created attachment 125142 [details]
New crash information added by DrKonqi

plasmashell (5.17.5) using Qt 5.14.0

- What I was doing when the application crashed:

During system upgrade using discover with package-qt5.

- Unusual behavior I noticed:

After trying to open another application from the start menu, the desktop crashed momentarily.

- Custom settings of the application:

Desktop displays wallpapers as random slides.

-- Backtrace (Reduced):
#6  0x00007fc3a8ba81f5 in QV4::QObjectWrapper::wrap(QV4::ExecutionEngine*, QObject*) () at /usr/lib/libQt5Qml.so.5
#7  0x00007fc3a8b9f128 in QV4::ExecutionEngine::fromVariant(QVariant const&) () at /usr/lib/libQt5Qml.so.5
#8  0x00007fc3a8c28293 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fc3a8c48027 in  () at /usr/lib/libQt5Qml.so.5
#10 0x00007fc3a8c4d30f in  () at /usr/lib/libQt5Qml.so.5

Comment 2 David Edmundson 2020-01-15 11:49:56 UTC

Pasting inline


Thread 1 (Thread 0x7fc3a8f0ccc0 (LWP 789)):
[KCrash Handler]
#6  0x00007fc3a8ba81f5 in QV4::QObjectWrapper::wrap(QV4::ExecutionEngine*, QObject*) () at /usr/lib/libQt5Qml.so.5
#7  0x00007fc3a8b9f128 in QV4::ExecutionEngine::fromVariant(QVariant const&) () at /usr/lib/libQt5Qml.so.5
#8  0x00007fc3a8c28293 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007fc3a8c48027 in  () at /usr/lib/libQt5Qml.so.5
#10 0x00007fc3a8c4d30f in  () at /usr/lib/libQt5Qml.so.5
#11 0x00007fc3a8bde340 in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () at /usr/lib/libQt5Qml.so.5
#12 0x00007fc3a8d6f030 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () at /usr/lib/libQt5Qml.so.5
#13 0x00007fc3a8d1587f in QQmlBoundSignalExpression::evaluate(void**) () at /usr/lib/libQt5Qml.so.5
#14 0x00007fc3a8d16eb9 in  () at /usr/lib/libQt5Qml.so.5
#15 0x00007fc3a8d5005d in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#16 0x00007fc3a8cf834e in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#17 0x00007fc3a7599eb5 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007fc38ce15121 in  () at /usr/lib/qt/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#19 0x00007fc38cddc5f0 in  () at /usr/lib/qt/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#20 0x00007fc3a759a370 in  () at /usr/lib/libQt5Core.so.5
#21 0x00007fc3877c7fe3 in Plasma::RunnerManager::matchesChanged(QList<Plasma::QueryMatch> const&) () at /usr/lib/libKF5Runner.so.5
#22 0x00007fc3877cc325 in  () at /usr/lib/libKF5Runner.so.5

Comment 3 kde 2020-01-15 22:23:39 UTC

get it back to work after I delete waiting printer jobs and printer queue. Not testet if first one would have been suffcient

Comment 4 Christoph Feck 2020-01-15 23:11:29 UTC

Mattheus, please don't add unrelated backtraces.

The reported crash in libkcups is already fixed.

*** This bug has been marked as a duplicate of bug 326289 ***