Bug 354660 - Plasma Taskbar Crash
Summary: Plasma Taskbar Crash
Status: RESOLVED FIXED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Application Menu (Kicker) (show other bugs)
Version: 5.4.2
Platform: openSUSE Linux
: NOR crash
Target Milestone: 1.0
Assignee: Eike Hein
URL:
Keywords: drkonqi
: 355750 355751 (view as bug list)
Depends on:
Blocks:
 
Reported: 2015-10-31 23:27 UTC by Armando
Modified: 2015-12-27 19:13 UTC (History)
5 users (show)

See Also:
Latest Commit: http://commits.kde.org/plasma-desktop/3dbbddcc75e6e99c2967b3be460511c833021c71
Version Fixed In:
Sentry Crash Report:

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Description Armando 2015-10-31 23:27:54 UTC 
Application: plasmashell (5.4.2)

Qt Version: 5.5.1
Operating System: Linux 4.2.3-1-default x86_64
Distribution: "openSUSE Tumbleweed (20151022) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Using openSuse Tumbleweed while moving the taskbar from the bootom to the top edge I received the notification of Plasma crashing and restarting. I did not loose the taskbar (panel).

- Custom settings of the application:

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f24a8f3f8c0 (LWP 1722))]

Thread 18 (Thread 0x7f24924a5700 (LWP 1726)):
#0  0x00007f24a25051cd in poll () from /lib64/libc.so.6
#1  0x00007f24a73a5432 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f24a73a7007 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f24945f4e29 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x1747320) at thread/qthread_unix.cpp:331
#5  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f248b5ef700 (LWP 1776)):
#0  0x00007f24a25051a0 in poll () from /lib64/libc.so.6
#1  0x00007f249ec0d264 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f249ec0d36c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f24a2e1b52b in QEventDispatcherGlib::processEvents (this=0x7f24840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f24a2dc563a in QEventLoop::exec (this=this@entry=0x7f248b5eecf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f24a2bf1b1c in QThread::exec (this=this@entry=0x180f500) at thread/qthread.cpp:503
#6  0x00007f24a5e869a5 in QQmlThreadPrivate::run (this=0x180f500) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x180f500) at thread/qthread_unix.cpp:331
#8  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f247ddc6700 (LWP 1779)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f248883786a in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f2488837097 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f2477ead700 (LWP 1784)):
#0  0x00007f249ec504e4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f249ec0ce3a in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f249ec0d2c8 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f249ec0d36c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f24a2e1b52b in QEventDispatcherGlib::processEvents (this=0x7f24700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f24a2dc563a in QEventLoop::exec (this=this@entry=0x7f2477eaccf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f24a2bf1b1c in QThread::exec (this=this@entry=0x19902c0) at thread/qthread.cpp:503
#7  0x00007f24a5e869a5 in QQmlThreadPrivate::run (this=0x19902c0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x19902c0) at thread/qthread_unix.cpp:331
#9  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f24767ae700 (LWP 1788)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a8612a84 in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f24a8612ac9 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f24756cb700 (LWP 1789)):
#0  0x00007f249ec504e4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f249ec0d259 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f249ec0d36c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f24a2e1b52b in QEventDispatcherGlib::processEvents (this=0x7f23e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f24a2dc563a in QEventLoop::exec (this=this@entry=0x7f24756cacf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f24a2bf1b1c in QThread::exec (this=this@entry=0x1c638e0) at thread/qthread.cpp:503
#6  0x00007f24a5e869a5 in QQmlThreadPrivate::run (this=0x1c638e0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x1c638e0) at thread/qthread_unix.cpp:331
#8  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f23ed264700 (LWP 1817)):
#0  0x00007f249ec0cbe6 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f249ec0d208 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f249ec0d36c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f24a2e1b52b in QEventDispatcherGlib::processEvents (this=0x7f23e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f24a2dc563a in QEventLoop::exec (this=this@entry=0x7f23ed263cb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f24a2bf1b1c in QThread::exec (this=this@entry=0x212e710) at thread/qthread.cpp:503
#6  0x00007f24a6a02e42 in QQuickPixmapReader::run (this=0x212e710) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/quick/util/qquickpixmapcache.cpp:760
#7  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x212e710) at thread/qthread_unix.cpp:331
#8  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f23d90f5700 (LWP 1824)):
#0  0x00007f24a25051cd in poll () from /lib64/libc.so.6
#1  0x00007f249ec0d264 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f249ec0d36c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f24a2e1b52b in QEventDispatcherGlib::processEvents (this=0x7f23d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f24a2dc563a in QEventLoop::exec (this=this@entry=0x7f23d90f4cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f24a2bf1b1c in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f23db605ed7 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#7  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x2e532a0) at thread/qthread_unix.cpp:331
#8  0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f23cd48d700 (LWP 2233)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#15 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#17 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#18 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#19 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#20 0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#21 0x00007f24a2bf694f in QThreadPrivate::start (arg=0x3de0010) at thread/qthread_unix.cpp:331
#22 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#23 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f23ccc8c700 (LWP 2234)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x3adc540) at thread/qthread_unix.cpp:331
#10 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f23c7fff700 (LWP 2235)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#15 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#17 0x00007f24a2bf694f in QThreadPrivate::start (arg=0x7f23c8003190) at thread/qthread_unix.cpp:331
#18 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#19 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f23c77fe700 (LWP 2236)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f24a2bf694f in QThreadPrivate::start (arg=0x7f23c0002d90) at thread/qthread_unix.cpp:331
#12 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#13 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f23c6ffd700 (LWP 2237)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x42b3470) at thread/qthread_unix.cpp:331
#10 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f23c67fc700 (LWP 2238)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f24a2bf694f in QThreadPrivate::start (arg=0x7f23bc002d90) at thread/qthread_unix.cpp:331
#12 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#13 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f23c5ffb700 (LWP 2239)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#15 0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#17 0x00007f24a2bf694f in QThreadPrivate::start (arg=0x7f23b4003190) at thread/qthread_unix.cpp:331
#18 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#19 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f23c57fa700 (LWP 2240)):
#0  0x00007f24a1d1207f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24a2bf7abb in wait (time=18446744073709551615, this=0x42b9d70) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3b29c90, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007f23e357de37 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007f23e3581d98 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007f23e3581de2 in ?? () from /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007f23e357d059 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007f23e357fe23 in ThreadWeaver::Thread::run() () from /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007f24a2bf694f in QThreadPrivate::start (arg=0x7f23ac0027d0) at thread/qthread_unix.cpp:331
#10 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f23aabdf700 (LWP 10855)):
#0  0x00007ffc0cfb0a41 in clock_gettime ()
#1  0x00007f24a251a756 in clock_gettime () from /lib64/libc.so.6
#2  0x00007f24a2ca21a6 in qt_clock_gettime (ts=0x7f23aabdeaa0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f24a2e190e9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f226014b0f0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f24a2e195f5 in QTimerInfoList::timerWait (this=0x7f226014b0f0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007f24a2e1a98e in timerSourcePrepareHelper (timeout=0x7f23aabdeb54, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f23aabdeb54) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f249ec0c88d in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#10 0x00007f249ec0d193 in ?? () from /usr/lib64/libglib-2.0.so.0
#11 0x00007f249ec0d36c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#12 0x00007f24a2e1b52b in QEventDispatcherGlib::processEvents (this=0x7f2260040b20, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007f24a2dc563a in QEventLoop::exec (this=this@entry=0x7f23aabdecf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f24a2bf1b1c in QThread::exec (this=this@entry=0x54d5cc0) at thread/qthread.cpp:503
#15 0x00007f24a5e869a5 in QQmlThreadPrivate::run (this=0x54d5cc0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#16 0x00007f24a2bf694f in QThreadPrivate::start (arg=0x54d5cc0) at thread/qthread_unix.cpp:331
#17 0x00007f24a1d0c4a4 in start_thread () from /lib64/libpthread.so.0
#18 0x00007f24a250db5d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f24a8f3f8c0 (LWP 1722)):
[KCrash Handler]
#6  0x00007f24a5dc89d0 in wasDeleted (object=0x2d7dc10) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/qqmldata_p.h:241
#7  QV4::QObjectWrapper::wrap (engine=engine@entry=0x1be9e90, object=0x2d7dc10) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/jsruntime/qv4qobjectwrapper.cpp:572
#8  0x00007f24a5d51744 in QV4::ExecutionEngine::fromVariant (this=this@entry=0x1be9e90, variant=...) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/jsruntime/qv4engine.cpp:1476
#9  0x00007f24a5dd0570 in QV4::QObjectSlotDispatcher::impl (which=<optimized out>, this_=<optimized out>, r=<optimized out>, metaArgs=0x7ffc0cfa9db0, ret=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/jsruntime/qv4qobjectwrapper.cpp:820
#10 0x00007f24a2df4e17 in call (a=0x7ffc0cfa9db0, r=0x22f66f0, this=<optimized out>) at ../../src/corelib/kernel/qobject_impl.h:124
#11 QMetaObject::activate (sender=0x22f66f0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffc0cfa9db0) at kernel/qobject.cpp:3698
#12 0x00007f24a2df5787 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f23ec6438a0 <WindowSystem::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffc0cfa9db0) at kernel/qobject.cpp:3578
#13 0x00007f23ec42e48a in focusOut (_t1=0x2d7dc10, this=<optimized out>) at /usr/src/debug/plasma-desktop-5.4.2/build/applets/kicker/moc_windowsystem.cpp:172
#14 WindowSystem::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=0x46e3e80) at /usr/src/debug/plasma-desktop-5.4.2/build/applets/kicker/moc_windowsystem.cpp:104
#15 0x00007f24a2df5d79 in QObject::event (this=0x22f66f0, e=<optimized out>) at kernel/qobject.cpp:1239
#16 0x00007f24a413d8cc in QApplicationPrivate::notify_helper (this=this@entry=0x1723f90, receiver=receiver@entry=0x22f66f0, e=e@entry=0x554ace0) at kernel/qapplication.cpp:3716
#17 0x00007f24a41429d6 in QApplication::notify (this=0x7ffc0cfaa420, receiver=0x22f66f0, e=0x554ace0) at kernel/qapplication.cpp:3499
#18 0x00007f24a2dc7cf3 in QCoreApplication::notifyInternal (this=0x7ffc0cfaa420, receiver=0x22f66f0, event=event@entry=0x554ace0) at kernel/qcoreapplication.cpp:965
#19 0x00007f24a2dca016 in sendEvent (event=0x554ace0, receiver=<optimized out>) at kernel/qcoreapplication.h:224
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1719700) at kernel/qcoreapplication.cpp:1593
#21 0x00007f24a2dca4f8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#22 0x00007f24a2e1b103 in postEventSourceDispatch (s=0x1778e50) at kernel/qeventdispatcher_glib.cpp:271
#23 0x00007f249ec0d097 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#24 0x00007f249ec0d2c8 in ?? () from /usr/lib64/libglib-2.0.so.0
#25 0x00007f249ec0d36c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#26 0x00007f24a2e1b50f in QEventDispatcherGlib::processEvents (this=0x1770840, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007f24a2dc563a in QEventLoop::exec (this=this@entry=0x7ffc0cfaa2b0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007f24a2dcd2fd in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#29 0x0000000000434150 in main (argc=2, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.4.2/shell/main.cpp:176

Possible duplicates by query: bug 349758.

Reported using DrKonqi
Comment 1 David Edmundson 2015-11-09 23:15:01 UTC 
From what I can tell:

Qt tries to run the focusOut called from

        QMetaObject::invokeMethod(this,
            "focusOut",
            Qt::QueuedConnection,
            Q_ARG(QQuickWindow*, qobject_cast<QQuickWindow *>(watched)));


but "watched" has been deleted by the QML engine in the meantime, so it can't go back into a QML context as an arg to the signal.

Obvious "fix" is simply to remove the arg as it's not being used by anyone. Eike, thoughts?
Comment 2 Eike Hein 2015-11-10 08:28:42 UTC 
Not the biggest fan of that since from an API POV it means a client can no longer tell which window the focusOut is for. It's true that this information currently isn't used by Kicker, but it's really crummy API without it. I think I'd be more comfortable with making it synchronous instead.

Curious how this wound up being called while moving a panel though.
Comment 3 Eike Hein 2015-11-12 10:41:42 UTC 
Git commit 3dbbddcc75e6e99c2967b3be460511c833021c71 by Eike Hein.
Committed on 12/11/2015 at 10:41.
Pushed by hein into branch 'master'.

Avoid crash by making emit synchronous.

M  +1    -4    applets/kicker/plugin/windowsystem.cpp

http://commits.kde.org/plasma-desktop/3dbbddcc75e6e99c2967b3be460511c833021c71
Comment 4 David Edmundson 2015-12-04 00:10:28 UTC 
*** Bug 355751 has been marked as a duplicate of this bug. ***
Comment 5 David Edmundson 2015-12-27 19:13:13 UTC 
*** Bug 355750 has been marked as a duplicate of this bug. ***