Bug 439500

Application: plasmashell (5.22.2)

Qt Version: 5.15.3
Frameworks Version: 5.83.0
Operating System: Linux 5.8.0-59-generic x86_64
Windowing System: Wayland
Drkonqi Version: 5.22.2
Distribution: KDE neon User Edition 5.22

-- Information about the crash:
I'm getting segmentation faults everytime I log in using the lastest KDE Neon user edition, using a Wayland session.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[New LWP 10758]
[New LWP 10821]
[New LWP 10822]
[New LWP 10823]
[New LWP 10824]
[New LWP 10825]
[New LWP 10863]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007efea118aaff in __GI___poll (fds=0x7ffcd1c9a538, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7efe9d46b8c0 (LWP 10729))]

Thread 8 (Thread 0x7efe8dc66700 (LWP 10863)):
#0  0x00007efea118aaff in __GI___poll (fds=0x7efe70004e60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007efe9faa636e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efe9faa64a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efea1759fcb in QEventDispatcherGlib::processEvents (this=0x7efe70000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007efea16fe25b in QEventLoop::exec (this=this@entry=0x7efe8dc65cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007efea1517c22 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007efea2d1a559 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007efea1518dbc in QThreadPrivate::start (arg=0x56298de51230) at thread/qthread_unix.cpp:329
#8  0x00007efea04d8609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007efea1197293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7efe8f05b700 (LWP 10825)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56298daa8718) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56298daa86c8, cond=0x56298daa86f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x56298daa86f0, mutex=0x56298daa86c8) at pthread_cond_wait.c:638
#3  0x00007efe9a7ecb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007efe9a7ec75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007efea04d8609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007efea1197293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7efe988c8700 (LWP 10824)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56298daa8718) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56298daa86c8, cond=0x56298daa86f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x56298daa86f0, mutex=0x56298daa86c8) at pthread_cond_wait.c:638
#3  0x00007efe9a7ecb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007efe9a7ec75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007efea04d8609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007efea1197293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7efe990c9700 (LWP 10823)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56298daa8718) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56298daa86c8, cond=0x56298daa86f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x56298daa86f0, mutex=0x56298daa86c8) at pthread_cond_wait.c:638
#3  0x00007efe9a7ecb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007efe9a7ec75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007efea04d8609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007efea1197293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7efe998ca700 (LWP 10822)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56298daa8718) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56298daa86c8, cond=0x56298daa86f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x56298daa86f0, mutex=0x56298daa86c8) at pthread_cond_wait.c:638
#3  0x00007efe9a7ecb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007efe9a7ec75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007efea04d8609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007efea1197293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7efe9a220700 (LWP 10821)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56298db86a68) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56298db86a18, cond=0x56298db86a40) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x56298db86a40, mutex=0x56298db86a18) at pthread_cond_wait.c:638
#3  0x00007efe9a7ecb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4  0x00007efe9a7ec75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5  0x00007efea04d8609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007efea1197293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7efe9c5ab700 (LWP 10758)):
#0  __GI___libc_read (nbytes=16, buf=0x7efe9c5aaaa0, fd=7) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=7, buf=0x7efe9c5aaaa0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007efe9faeeb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efe9faa5ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007efe9faa6312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007efe9faa64a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007efea1759fcb in QEventDispatcherGlib::processEvents (this=0x7efe94000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007efea16fe25b in QEventLoop::exec (this=this@entry=0x7efe9c5aacb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#8  0x00007efea1517c22 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#9  0x00007efea208bf4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007efea1518dbc in QThreadPrivate::start (arg=0x7efea210fd80) at thread/qthread_unix.cpp:329
#11 0x00007efea04d8609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007efea1197293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7efe9d46b8c0 (LWP 10729)):
[KCrash Handler]
#4  0x00007efea1b0ac76 in QScreen::name (this=0x56298dacd9d0) at kernel/qscreen.cpp:195
#5  0x000056298d2bea64 in ShellCorona::addOutput (this=this@entry=0x56298db94310, screen=<optimized out>, screen@entry=0x56298dacd9d0) at ./shell/shellcorona.cpp:1251
#6  0x000056298d2c8f33 in ShellCorona::load (this=0x56298db94310) at ./shell/shellcorona.cpp:701
#7  0x00007efea173677e in QtPrivate::QSlotObjectBase::call (a=0x7ffcd1c9b400, r=0x56298db94310, this=0x56298dc8d100) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#8  doActivate<false> (sender=0x56298dbf34a0, signal_index=4, argv=0x7ffcd1c9b400) at kernel/qobject.cpp:3886
#9  0x00007efea172fb47 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7efea3a7e0c0 <KActivities::Consumer::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffcd1c9b400) at kernel/qobject.cpp:3946
#10 0x00007efea3a4fd85 in KActivities::Consumer::serviceStatusChanged (this=<optimized out>, _t1=<optimized out>) at ./obj-x86_64-linux-gnu/src/lib/KF5Activities_autogen/EWIEGA46WW/moc_consumer.cpp:253
#11 0x00007efea173677e in QtPrivate::QSlotObjectBase::call (a=0x7ffcd1c9b520, r=0x56298dbf34a0, this=0x56298dc5e650) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#12 doActivate<false> (sender=0x56298dbf6040, signal_index=11, argv=0x7ffcd1c9b520) at kernel/qobject.cpp:3886
#13 0x00007efea172fb47 in QMetaObject::activate (sender=sender@entry=0x56298dbf6040, m=m@entry=0x7efea3a7e180 <KActivities::ActivitiesCache::staticMetaObject>, local_signal_index=local_signal_index@entry=8, argv=argv@entry=0x7ffcd1c9b520) at kernel/qobject.cpp:3946
#14 0x00007efea3a4fd25 in KActivities::ActivitiesCache::serviceStatusChanged (this=this@entry=0x56298dbf6040, _t1=<optimized out>, _t1@entry=KActivities::Consumer::Running) at ./obj-x86_64-linux-gnu/src/lib/KF5Activities_autogen/EWIEGA46WW/moc_activitiescache_p.cpp:412
#15 0x00007efea3a68c96 in KActivities::ActivitiesCache::setAllActivities (this=this@entry=0x56298dbf6040, _activities=...) at ./src/lib/activitiescache_p.cpp:270
#16 0x00007efea3a68ecd in KActivities::ActivitiesCache::passInfoFromReply<QList<ActivityInfo>, void (KActivities::ActivitiesCache::*)(QList<ActivityInfo> const&)> (f=(void (KActivities::ActivitiesCache::*)(class KActivities::ActivitiesCache * const, const class QList<ActivityInfo> &)) 0x7efea3a68b20 <KActivities::ActivitiesCache::setAllActivities(QList<ActivityInfo> const&)>, watcher=0x56298dc2b5c0, this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:164
#17 KActivities::ActivitiesCache::setAllActivitiesFromReply (this=<optimized out>, watcher=0x56298dc2b5c0) at ./src/lib/activitiescache_p.cpp:195
#18 0x00007efea3a505ef in KActivities::ActivitiesCache::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/src/lib/KF5Activities_autogen/EWIEGA46WW/moc_activitiescache_p.cpp:201
#19 0x00007efea17367b0 in doActivate<false> (sender=0x56298dc2b5c0, signal_index=3, argv=0x7ffcd1c9b7c0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395
#20 0x00007efea20ef0d3 in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#21 0x00007efea20ef1d8 in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#22 0x00007efea172d2f9 in QObject::event (this=0x56298dc2b5c0, e=0x56298db00ee0) at kernel/qobject.cpp:1314
#23 0x00007efea2400dc3 in QApplicationPrivate::notify_helper (this=this@entry=0x56298dabc420, receiver=receiver@entry=0x56298dc2b5c0, e=e@entry=0x56298db00ee0) at kernel/qapplication.cpp:3632
#24 0x00007efea2409bb8 in QApplication::notify (this=0x7ffcd1c9bee0, receiver=0x56298dc2b5c0, e=0x56298db00ee0) at kernel/qapplication.cpp:3156
#25 0x00007efea16ff75a in QCoreApplication::notifyInternal2 (receiver=0x56298dc2b5c0, event=0x56298db00ee0) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#26 0x00007efea1702061 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x56298dab13c0) at kernel/qcoreapplication.cpp:1821
#27 0x00007efea175a957 in postEventSourceDispatch (s=0x56298dafcb80) at kernel/qeventdispatcher_glib.cpp:277
#28 0x00007efe9faa617d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007efe9faa6400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007efe9faa64a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007efea1759fb2 in QEventDispatcherGlib::processEvents (this=0x56298db26ea0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#32 0x00007efea16fe25b in QEventLoop::exec (this=this@entry=0x7ffcd1c9bd90, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#33 0x00007efea1706414 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#34 0x000056298d296e08 in main (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:254
[Inferior 1 (process 10729) detached]

Reported using DrKonqi