Bug 361541

Application: plasmashell (5.4.2)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-35-generic x86_64
Distribution: Ubuntu 15.10

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

I had opened VLC to watch a video a few seconds ago.  After VLC had already opened, I turned on my TV, which my laptop was already connected to via HDMI.  The screen went dark for a moment, then Plasma crashed.

-- Backtrace:
Application: Plasma (plasmashell), signal: Bus error
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0a139b0800 (LWP 12479))]

Thread 8 (Thread 0x7f0a1130c700 (LWP 12481)):
#0  0x00007f0a2047388d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f0a244babd2 in poll (__timeout=-1, __nfds=1, __fds=0x7f0a1130bcc0) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x1047200, cond=cond@entry=0x1047240, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x00007f0a244bc74f in xcb_wait_for_event (c=0x1047200) at ../../src/xcb_in.c:623
#4  0x00007f0a13656a39 in QXcbEventReader::run (this=0x1051600) at qxcbconnection.cpp:1105
#5  0x00007f0a20b662be in QThreadPrivate::start (arg=0x1051600) at thread/qthread_unix.cpp:337
#6  0x00007f0a1fc556aa in start_thread (arg=0x7f0a1130c700) at pthread_create.c:333
#7  0x00007f0a2047ee9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f0a04afe700 (LWP 12487)):
#0  0x00007f0a1d264869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0a1d21f9a1 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a1d220167 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a1d2202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0a20d9d29b in QEventDispatcherGlib::processEvents (this=0x7f0a000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0a20d4375a in QEventLoop::exec (this=this@entry=0x7f0a04afdda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0a20b613d4 in QThread::exec (this=this@entry=0x120f470) at thread/qthread.cpp:503
#7  0x00007f0a23389f85 in QQmlThreadPrivate::run (this=0x120f470) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f0a20b662be in QThreadPrivate::start (arg=0x120f470) at thread/qthread_unix.cpp:337
#9  0x00007f0a1fc556aa in start_thread (arg=0x7f0a04afe700) at pthread_create.c:333
#10 0x00007f0a2047ee9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f09f8c1b700 (LWP 12551)):
#0  0x00007f0a1d264884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0a1d22009d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a1d2202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a20d9d29b in QEventDispatcherGlib::processEvents (this=0x7f09f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0a20d4375a in QEventLoop::exec (this=this@entry=0x7f09f8c1ada0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0a20b613d4 in QThread::exec (this=this@entry=0x1445ec0) at thread/qthread.cpp:503
#6  0x00007f0a23389f85 in QQmlThreadPrivate::run (this=0x1445ec0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007f0a20b662be in QThreadPrivate::start (arg=0x1445ec0) at thread/qthread_unix.cpp:337
#8  0x00007f0a1fc556aa in start_thread (arg=0x7f09f8c1b700) at pthread_create.c:333
#9  0x00007f0a2047ee9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f09f221f700 (LWP 12586)):
#0  0x00007f0a2047388d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f0a1d2201ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a1d2202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a20d9d29b in QEventDispatcherGlib::processEvents (this=0x7f09e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0a20d4375a in QEventLoop::exec (this=this@entry=0x7f09f221eda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0a20b613d4 in QThread::exec (this=this@entry=0x17437b0) at thread/qthread.cpp:503
#6  0x00007f0a23389f85 in QQmlThreadPrivate::run (this=0x17437b0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007f0a20b662be in QThreadPrivate::start (arg=0x17437b0) at thread/qthread_unix.cpp:337
#8  0x00007f0a1fc556aa in start_thread (arg=0x7f09f221f700) at pthread_create.c:333
#9  0x00007f0a2047ee9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f09f09db700 (LWP 12641)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0a25715114 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f0a25715159 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f0a1fc556aa in start_thread (arg=0x7f09f09db700) at pthread_create.c:333
#4  0x00007f0a2047ee9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f09e9fc5700 (LWP 12692)):
#0  0x00007ffd759d8a50 in clock_gettime ()
#1  0x00007f0a2048d33d in __GI___clock_gettime (clock_id=<optimized out>, tp=tp@entry=0x7f09e9fc4ac0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f0a20c173a6 in qt_clock_gettime (ts=0x7f09e9fc4ac0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007f0a20d9ad29 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f09600030d0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f0a20d9b295 in QTimerInfoList::timerWait (this=0x7f09600030d0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007f0a20d9c67e in timerSourcePrepareHelper (timeout=0x7f09e9fc4b94, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f09e9fc4b94) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f0a1d21f77d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f0a1d22011b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f0a1d2202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f0a20d9d29b in QEventDispatcherGlib::processEvents (this=0x7f09600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007f0a20d4375a in QEventLoop::exec (this=this@entry=0x7f09e9fc4d50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f0a20b613d4 in QThread::exec (this=this@entry=0x19fae10) at thread/qthread.cpp:503
#15 0x00007f0a23d05ef6 in QQuickPixmapReader::run (this=0x19fae10) at util/qquickpixmapcache.cpp:797
#16 0x00007f0a20b662be in QThreadPrivate::start (arg=0x19fae10) at thread/qthread_unix.cpp:337
#17 0x00007f0a1fc556aa in start_thread (arg=0x7f09e9fc5700) at pthread_create.c:333
#18 0x00007f0a2047ee9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f095463a700 (LWP 13143)):
#0  0x00007f0a1d264884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0a1d21f770 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0a1d22011b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0a1d2202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0a20d9d29b in QEventDispatcherGlib::processEvents (this=0x7f094c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0a20d4375a in QEventLoop::exec (this=this@entry=0x7f0954639d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0a20b613d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f09556378f7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f0a20b662be in QThreadPrivate::start (arg=0x3f8c2d0) at thread/qthread_unix.cpp:337
#9  0x00007f0a1fc556aa in start_thread (arg=0x7f095463a700) at pthread_create.c:333
#10 0x00007f0a2047ee9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f0a139b0800 (LWP 12479)):
[KCrash Handler]
#6  0x00007f0a232d0197 in QQmlData::wasDeleted (object=<optimized out>) at ../../include/QtQml/5.4.2/QtQml/private/../../../../../src/qml/qml/qqmldata_p.h:234
#7  QV4::QObjectWrapper::wrap (engine=0x1763c30, object=0x4d1f850) at jsruntime/qv4qobjectwrapper.cpp:571
#8  0x00007f0a2338bf9c in QV8Engine::fromVariant (this=this@entry=0x1763bc0, variant=...) at qml/v8/qv8engine.cpp:404
#9  0x00007f0a2337d347 in QV4::QmlContextWrapper::get (m=<optimized out>, name=<optimized out>, hasProperty=0x7ffd759124a0) at qml/qqmlcontextwrapper.cpp:234
#10 0x00007f0a23268c4a in QV4::Object::get (hasProperty=0x7ffd759124a0, name=0x7f09f80b2da0, this=<optimized out>) at jsruntime/qv4object_p.h:252
#11 QV4::ExecutionContext::getProperty (this=0x7ffd75912590, name=0x7f09f80b2da0) at jsruntime/qv4context.cpp:379
#12 0x00007f09f008d92e in ?? ()
#13 0x0000000000000000 in ?? ()

Reported using DrKonqi