Bug 410124

Application: plasmashell (5.16.3)

Qt Version: 5.13.0
Frameworks Version: 5.59.0
Operating System: Linux 5.2.0-arch2-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

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

I started org.cups.cupsd.service using systemctl and printed two documents via chromium before it crashes. It fails when I tried to restart plasmashell, here's the log: https://fars.ee/Nf7_

Only when I stop the org.cups.cupsd.service can I restart plasmashell successfully.

- Distribution method:

Arch Linux

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f506f37a880 (LWP 23529))]

Thread 9 (Thread 0x7f504df53700 (LWP 23585)):
#0  0x00007f5073ee4667 in poll () at /usr/lib/libc.so.6
#1  0x00007f507251ea80 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f507251eb51 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f50744859bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f507442c5ec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f507425f2f5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5074260520 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f504fd8b700 (LWP 23584)):
#0  0x00007f507251e1b4 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f507251e9a6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f507251eb51 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f50744859bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f507442c5ec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f507425f2f5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f504eb5313b in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f5074260520 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f505a7e5700 (LWP 23575)):
#0  0x00007f5073ee018c in read () at /usr/lib/libc.so.6
#1  0x00007f50724cf9f0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f507251d311 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f507251ea28 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f507251eb51 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f50744859bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f507442c5ec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f507425f2f5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f5075fa961b in  () at /usr/lib/libQt5Quick.so.5
#9  0x00007f5074260520 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f505afe6700 (LWP 23574)):
#0  0x00007f5073534415 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f50742665a0 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f5074266692 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f50760347bd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f5076034a6e in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f5074260520 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f5065a1c700 (LWP 23573)):
#0  0x00007f5073534415 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f5065d11ebc in  () at /usr/lib/dri/i965_dri.so
#2  0x00007f5065d11ab8 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f5067fff700 (LWP 23572)):
#0  0x00007f5073ee4667 in poll () at /usr/lib/libc.so.6
#1  0x00007f507251ea80 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f507251eb51 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f50744859bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f507442c5ec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f507425f2f5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5075ccb8f9 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f5074260520 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f506d53c700 (LWP 23571)):
#0  0x00007f5073ee018c in read () at /usr/lib/libc.so.6
#1  0x00007f50724cf9f0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f507251d311 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f507251ea28 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f507251eb51 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f50744859bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f507442c5ec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f507425f2f5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f5074cfab37 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007f5074260520 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f506e297700 (LWP 23569)):
#0  0x00007f5073ee4667 in poll () at /usr/lib/libc.so.6
#1  0x00007f5076439630 in  () at /usr/lib/libxcb.so.1
#2  0x00007f507643b2db in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f506ec09049 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f5074260520 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f507352e57f in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f5073eef0e3 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f506f37a880 (LWP 23529)):
[KCrash Handler]
#6  0x00007f504eb72e78 in JobModel::updateJob(int, KCupsJob const&) () at /usr/lib/libkcupslib.so
#7  0x00007f504eb74fec in JobModel::insertJob(int, KCupsJob const&) () at /usr/lib/libkcupslib.so
#8  0x00007f504eb754c0 in JobModel::getJobFinished(KCupsRequest*) () at /usr/lib/libkcupslib.so
#9  0x00007f507445a44a in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#10 0x00007f5074f654d5 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f5074f6ea21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f507442d9c2 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#13 0x00007f5074430739 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#14 0x00007f50744863a4 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007f507251ccf4 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#16 0x00007f507251eb11 in  () at /usr/lib/libglib-2.0.so.0
#17 0x00007f507251eb51 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#18 0x00007f50744859a3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007f507442c5ec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#20 0x00007f5074434326 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#21 0x000055d92f58ddf6 in  ()
#22 0x00007f5073e19ee3 in __libc_start_main () at /usr/lib/libc.so.6
#23 0x000055d92f58e2ae in _start ()
[Inferior 1 (process 23529) detached]

Reported using DrKonqi