Bug 372258

Summary: plasmas crashed
Product: [Plasma] plasmashell Reporter: kxenator <kxenator>
Component: generic-multiscreenAssignee: Aleix Pol <aleixpol>
Status: RESOLVED FIXED    
Severity: crash CC: bshah, notmart, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.8.3   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description kxenator 2016-11-09 15:09:49 UTC 
Application: plasmashell (5.8.3)

Qt Version: 5.7.0
Frameworks Version: 5.27.0
Operating System: Linux 4.8.6-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
I plugged in two external displays. It's almost always reproducible.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8860cf28c0 (LWP 2674))]

Thread 17 (Thread 0x7f8737ffe700 (LWP 7257)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x3e4b750) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x443b088, mutex=mutex@entry=0x443b080, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x443b078) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x443b000) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x443b000) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x443b000) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f8737ffe700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f875bffe700 (LWP 6750)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x18afa00) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x3db52c8, mutex=mutex@entry=0x3db52c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x3db52b8) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x3db5240) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x3db5240) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x3db5240) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f875bffe700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f8771bfc700 (LWP 4228)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x3db61f0) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x3afa748, mutex=mutex@entry=0x3afa740, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x3afa738) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x3afa6c0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x3afa6c0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x3afa6c0) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f8771bfc700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f87727fd700 (LWP 3343)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x38b2f80) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x3ac7158, mutex=mutex@entry=0x3ac7150, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x3ac7148) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x3ac70d0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x3ac70d0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x3ac70d0) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f87727fd700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f8772ffe700 (LWP 3342)):
#0  0x00007f885064628e in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#1  0x00007f8850646b7e in pa_fdsem_before_poll () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#2  0x00007f885065e847 in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#3  0x00007f88513f965c in pa_mainloop_dispatch () at /usr/lib64/libpulse.so.0
#4  0x00007f88513f9a5c in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#5  0x00007f88513f9b00 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#6  0x00007f8851407b29 in  () at /usr/lib64/libpulse.so.0
#7  0x00007f885066e1e8 in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#8  0x00007f8859bb5454 in start_thread (arg=0x7f8772ffe700) at pthread_create.c:333
#9  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f877d3bf700 (LWP 3340)):
#0  0x00007f88554387d3 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f885543898c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f885acd279b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f876c0013d0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#3  0x00007f885ac7c1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f877d3bece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#4  0x00007f885aaaa8b3 in QThread::exec() (this=this@entry=0x2f700d0) at thread/qthread.cpp:507
#5  0x00007f885dddba75 in QQmlThreadPrivate::run() (this=0x2f700d0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/ftw/qqmlthread.cpp:147
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x2f700d0) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f877d3bf700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f877cbbe700 (LWP 2855)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x3641cf0) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x1b968b8, mutex=mutex@entry=0x1b968b0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x1b968a8) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x1b96830) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x1b96830) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x1b96830) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f877cbbe700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f878514b700 (LWP 2702)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x34a98e0) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x3466658, mutex=mutex@entry=0x3466650, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x3466648) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x34665d0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x34665d0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x34665d0) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f878514b700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f8785dcd700 (LWP 2700)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2fa91c0) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2f548f8, mutex=mutex@entry=0x2f548f0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x2f548e8) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x2f54870) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x2f54870) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x2f54870) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f8785dcd700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f878c823700 (LWP 2688)):
#0  0x00007f885547dec4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f8855437d6c in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f885543879b in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f885543898c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f885acd279b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f87880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f885ac7c1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f878c822cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f885aaaa8b3 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f878ed4ddf7 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#8  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x2eeb070) at thread/qthread_unix.cpp:344
#9  0x00007f8859bb5454 in start_thread (arg=0x7f878c823700) at pthread_create.c:333
#10 0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f87a6afb700 (LWP 2681)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x14d9cf0) at thread/qwaitcondition_unix.cpp:143
#2  0x00007f885aab040b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x1680488, mutex=mutex@entry=0x1680480, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (wait=true, this=0x1680478) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:242
#4  0x00007f885e9d9145 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x1680400) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:690
#5  0x00007f885e9d9a3a in QSGRenderThread::run() (this=0x1680400) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/scenegraph/qsgthreadedrenderloop.cpp:719
#6  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x1680400) at thread/qthread_unix.cpp:344
#7  0x00007f8859bb5454 in start_thread (arg=0x7f87a6afb700) at pthread_create.c:333
#8  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f87a7ae6700 (LWP 2680)):
#0  0x00007f885a3b368d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8855438876 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f885543898c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f885acd279b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f87a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f885ac7c1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f87a7ae5c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007f885aaaa8b3 in QThread::exec() (this=this@entry=0x1932d20) at thread/qthread.cpp:507
#6  0x00007f885e96a646 in QQuickPixmapReader::run() (this=0x1932d20) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/quick/util/qquickpixmapcache.cpp:823
#7  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x1932d20) at thread/qthread_unix.cpp:344
#8  0x00007f8859bb5454 in start_thread (arg=0x7f87a7ae6700) at pthread_create.c:333
#9  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f88379d4700 (LWP 2679)):
#0  0x00007f8859bbb10f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88603e2834 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f88603e2879 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f8859bb5454 in start_thread (arg=0x7f88379d4700) at pthread_create.c:333
#4  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f883d7ed700 (LWP 2678)):
#0  0x00007f885a3b368d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8855438876 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f885543898c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f885acd279b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f88300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f885ac7c1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f883d7ecce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007f885aaaa8b3 in QThread::exec() (this=this@entry=0x1556fd0) at thread/qthread.cpp:507
#6  0x00007f885dddba75 in QQmlThreadPrivate::run() (this=0x1556fd0) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/ftw/qqmlthread.cpp:147
#7  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x1556fd0) at thread/qthread_unix.cpp:344
#8  0x00007f8859bb5454 in start_thread (arg=0x7f883d7ed700) at pthread_create.c:333
#9  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f883f1e1700 (LWP 2677)):
#0  0x00007f885547dec4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f88554377ce in g_main_context_acquire () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f8855438725 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f885543898c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f885acd279b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f88380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f885ac7c1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f883f1e0ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007f885aaaa8b3 in QThread::exec() (this=this@entry=0x14fe490) at thread/qthread.cpp:507
#7  0x00007f885dddba75 in QQmlThreadPrivate::run() (this=0x14fe490) at /usr/src/debug/qtdeclarative-opensource-src-5.7.0/src/qml/qml/ftw/qqmlthread.cpp:147
#8  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x14fe490) at thread/qthread_unix.cpp:344
#9  0x00007f8859bb5454 in start_thread (arg=0x7f883f1e1700) at pthread_create.c:333
#10 0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f884f44d700 (LWP 2675)):
#0  0x00007f885a3b368d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f8855438876 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f885543898c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f885acd279b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f88480008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f885ac7c1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f884f44ccd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007f885aaaa8b3 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007f885b82c3e5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f885aaaf558 in QThreadPrivate::start(void*) (arg=0x7f885ba9dd20) at thread/qthread_unix.cpp:344
#8  0x00007f8859bb5454 in start_thread (arg=0x7f884f44d700) at pthread_create.c:333
#9  0x00007f885a3bc39f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f8860cf28c0 (LWP 2674)):
[KCrash Handler]
#6  0x00007f885ac86d47 in QMetaObject::cast(QObject const*) const (this=0x7f885f316140 <Plasma::Corona::staticMetaObject>, obj=0x7f885a66cb58 <main_arena+120>) at kernel/qmetaobject.cpp:366
#7  0x00007f885f099498 in Plasma::Containment::corona() const () at /usr/lib64/libKF5Plasma.so.5
#8  0x00007f885f099519 in Plasma::Containment::screen() const () at /usr/lib64/libKF5Plasma.so.5
#9  0x00000000004402f0 in ShellCorona::createContainmentForActivity(QString const&, int) (this=this@entry=0x14d4250, activity=..., screenNum=screenNum@entry=2) at /usr/src/debug/plasma-workspace-5.8.3/shell/shellcorona.cpp:1157
#10 0x00000000004405e7 in ShellCorona::addOutput(QScreen*) (this=0x14d4250, screen=<optimized out>) at /usr/src/debug/plasma-workspace-5.8.3/shell/shellcorona.cpp:1125
#11 0x00007f885acaa21e in QMetaObject::activate(QObject*, int, int, void**) (a=0x7ffdfda46ee0, r=0x14d4250, this=<optimized out>) at ../../src/corelib/kernel/qobject_impl.h:130
#12 0x00007f885acaa21e in QMetaObject::activate(QObject*, int, int, void**) (sender=0x7ffdfda47820, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3723
#13 0x00007f885b1c9512 in QGuiApplication::screenAdded(QScreen*) () at /usr/lib64/libQt5Gui.so.5
#14 0x00007f885b1bc909 in QPlatformIntegration::screenAdded(QPlatformScreen*, bool) () at /usr/lib64/libQt5Gui.so.5
#15 0x00007f884cec022d in QXcbConnection::createScreen(QXcbVirtualDesktop*, xcb_randr_output_change_t const&, xcb_randr_get_output_info_reply_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#16 0x00007f884cec1cbf in QXcbConnection::updateScreens(xcb_randr_notify_event_t const*) () at /usr/lib64/libQt5XcbQpa.so.5
#17 0x00007f884cec2733 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#18 0x00007f884cec2a55 in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#19 0x00007f885acaad59 in QObject::event(QEvent*) (this=0x142d080, e=<optimized out>) at kernel/qobject.cpp:1263
#20 0x00007f885bc0092c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x142d080, e=0x7f8840006ed0) at kernel/qapplication.cpp:3799
#21 0x00007f885bc080e1 in QApplication::notify(QObject*, QEvent*) (this=0x7ffdfda47820, receiver=0x142d080, e=0x7f8840006ed0) at kernel/qapplication.cpp:3556
#22 0x00007f885ac7e200 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x142d080, event=event@entry=0x7f8840006ed0) at kernel/qcoreapplication.cpp:988
#23 0x00007f885ac8098d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0x7f8840006ed0, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#24 0x00007f885ac8098d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x140ef70) at kernel/qcoreapplication.cpp:1649
#25 0x00007f885ac80df8 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1503
#26 0x00007f885acd2373 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x146fa80) at kernel/qeventdispatcher_glib.cpp:276
#27 0x00007f8855438677 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#28 0x00007f88554388e0 in  () at /usr/lib64/libglib-2.0.so.0
#29 0x00007f885543898c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#30 0x00007f885acd277f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1474ab0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#31 0x00007f885ac7c1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffdfda476b0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#32 0x00007f885ac8495c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1261
#33 0x000000000041e922 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.8.3/shell/main.cpp:166

Reported using DrKonqi
Comment 1 Marco Martin 2016-11-10 13:04:45 UTC 
should have been fixed in commit b8d3e09b368 in plasma-workspace

further testing needed
Comment 2 Marco Martin 2016-11-17 10:57:21 UTC 
also, can this be reproduced with libplasma debug symbols as well?
Comment 3 Marco Martin 2016-11-21 16:49:34 UTC 
fixed in commit b8d3e09b in plasma-workspace