Bug 355916

Application: plasmashell (5.4.3)

Qt Version: 5.5.0
Operating System: Linux 4.1.12-1-default x86_64
Distribution (Platform): openSUSE RPMs

-- Information about the crash:
- What I was doing when the application crashed:
Several times adding/removing new panels. Plasma 5.4.3 restarted.

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 0x7f97a2fea7c0 (LWP 6422))]

Thread 10 (Thread 0x7f978ca9c700 (LWP 6425)):
#0  0x00007f979c533c1d in poll () from /lib64/libc.so.6
#1  0x00007f97a145a422 in poll (__timeout=-1, __nfds=1, __fds=0x7f978ca9bd00) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0xfa07d0, cond=cond@entry=0xfa0810, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:459
#3  0x00007f97a145c00f in xcb_wait_for_event (c=0xfa07d0) at xcb_in.c:693
#4  0x00007f978ebecc29 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#5  0x00007f979cc2a55f in QThreadPrivate::start (arg=0xfaed60) at thread/qthread_unix.cpp:331
#6  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f978a2ef700 (LWP 6467)):
#0  0x00007f979c548682 in __libc_disable_asynccancel () from /lib64/libc.so.6
#1  0x00007f979c533c29 in poll () from /lib64/libc.so.6
#2  0x00007f9798c14e64 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f977c003070, timeout=-1, context=0x7f977c000990) at gmain.c:4103
#3  g_main_context_iterate (context=context@entry=0x7f977c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#4  0x00007f9798c14f7c in g_main_context_iteration (context=0x7f977c000990, may_block=1) at gmain.c:3869
#5  0x00007f979ce5ba5b in QEventDispatcherGlib::processEvents (this=0x7f977c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f979ce02a63 in QEventLoop::exec (this=this@entry=0x7f978a2eedf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f979cc2584a in QThread::exec (this=this@entry=0x1077ab0) at thread/qthread.cpp:503
#8  0x00007f979ff0e5f8 in QQmlThreadPrivate::run (this=0x1077ab0) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f979cc2a55f in QThreadPrivate::start (arg=0x1077ab0) at thread/qthread_unix.cpp:331
#10 0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f9772db0700 (LWP 6505)):
#0  0x00007f9798c56cf9 in g_mutex_lock (mutex=mutex@entry=0x7f976c000990) at gthread-posix.c:1336
#1  0x00007f9798c148fc in g_main_context_check (context=context@entry=0x7f976c000990, max_priority=2147483647, fds=fds@entry=0x7f976c002e70, n_fds=n_fds@entry=1) at gmain.c:3651
#2  0x00007f9798c14df8 in g_main_context_iterate (context=context@entry=0x7f976c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f9798c14f7c in g_main_context_iteration (context=0x7f976c000990, may_block=1) at gmain.c:3869
#4  0x00007f979ce5ba5b in QEventDispatcherGlib::processEvents (this=0x7f976c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f979ce02a63 in QEventLoop::exec (this=this@entry=0x7f9772dafdf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f979cc2584a in QThread::exec (this=this@entry=0x120b190) at thread/qthread.cpp:503
#7  0x00007f979ff0e5f8 in QQmlThreadPrivate::run (this=0x120b190) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f979cc2a55f in QThreadPrivate::start (arg=0x120b190) at thread/qthread_unix.cpp:331
#9  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f97716b0700 (LWP 6537)):
#0  0x00007f979bd4105f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f97a26c17eb in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f97a26c1819 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f96ebdc9700 (LWP 6540)):
#0  g_mutex_unlock (mutex=0x7f96e4000990) at gthread-posix.c:1348
#1  0x00007f9798c13f20 in g_main_context_acquire (context=0x7f96e4000990) at gmain.c:3196
#2  0x00007f9798c14d25 in g_main_context_iterate (context=context@entry=0x7f96e4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3758
#3  0x00007f9798c14f7c in g_main_context_iteration (context=0x7f96e4000990, may_block=1) at gmain.c:3869
#4  0x00007f979ce5ba5b in QEventDispatcherGlib::processEvents (this=0x7f96e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f979ce02a63 in QEventLoop::exec (this=this@entry=0x7f96ebdc8df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f979cc2584a in QThread::exec (this=this@entry=0xfb7840) at thread/qthread.cpp:503
#7  0x00007f979ff0e5f8 in QQmlThreadPrivate::run (this=0xfb7840) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f979cc2a55f in QThreadPrivate::start (arg=0xfb7840) at thread/qthread_unix.cpp:331
#9  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f96e3b49700 (LWP 6560)):
#0  0x00007f9798c56cf9 in g_mutex_lock (mutex=mutex@entry=0x7f96dc000990) at gthread-posix.c:1336
#1  0x00007f9798c1478e in g_main_context_check (context=context@entry=0x7f96dc000990, max_priority=2147483647, fds=fds@entry=0x7f96dc003120, n_fds=n_fds@entry=1) at gmain.c:3589
#2  0x00007f9798c14df8 in g_main_context_iterate (context=context@entry=0x7f96dc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f9798c14f7c in g_main_context_iteration (context=0x7f96dc000990, may_block=1) at gmain.c:3869
#4  0x00007f979ce5ba5b in QEventDispatcherGlib::processEvents (this=0x7f96dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f979ce02a63 in QEventLoop::exec (this=this@entry=0x7f96e3b48db0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f979cc2584a in QThread::exec (this=this@entry=0x18fc920) at thread/qthread.cpp:503
#7  0x00007f97a0aa1f82 in QQuickPixmapReader::run (this=0x18fc920) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/util/qquickpixmapcache.cpp:754
#8  0x00007f979cc2a55f in QThreadPrivate::start (arg=0x18fc920) at thread/qthread_unix.cpp:331
#9  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f96d3f59700 (LWP 6715)):
#0  0x00007f9798c56cf9 in g_mutex_lock (mutex=mutex@entry=0x7f96cc000990) at gthread-posix.c:1336
#1  0x00007f9798c148fc in g_main_context_check (context=context@entry=0x7f96cc000990, max_priority=2147483647, fds=fds@entry=0x7f96cc0048d0, n_fds=n_fds@entry=1) at gmain.c:3651
#2  0x00007f9798c14df8 in g_main_context_iterate (context=context@entry=0x7f96cc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f9798c14f7c in g_main_context_iteration (context=0x7f96cc000990, may_block=1) at gmain.c:3869
#4  0x00007f979ce5ba5b in QEventDispatcherGlib::processEvents (this=0x7f96cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f979ce02a63 in QEventLoop::exec (this=this@entry=0x7f96d3f58dd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f979cc2584a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f96d55a6b77 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#8  0x00007f979cc2a55f in QThreadPrivate::start (arg=0x1d37cf0) at thread/qthread_unix.cpp:331
#9  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f96bd4c9700 (LWP 32115)):
#0  g_mutex_unlock (mutex=0x7f96ac001ac0) at gthread-posix.c:1348
#1  0x00007f9798c148e9 in g_main_context_check (context=context@entry=0x7f96ac001ac0, max_priority=2147483647, fds=fds@entry=0x7f96ac114cd0, n_fds=n_fds@entry=1) at gmain.c:3647
#2  0x00007f9798c14df8 in g_main_context_iterate (context=context@entry=0x7f96ac001ac0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f9798c14f7c in g_main_context_iteration (context=0x7f96ac001ac0, may_block=1) at gmain.c:3869
#4  0x00007f979ce5ba5b in QEventDispatcherGlib::processEvents (this=0x7f96ac1544d0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f979ce02a63 in QEventLoop::exec (this=this@entry=0x7f96bd4c8df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f979cc2584a in QThread::exec (this=this@entry=0x2abf940) at thread/qthread.cpp:503
#7  0x00007f979ff0e5f8 in QQmlThreadPrivate::run (this=0x2abf940) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f979cc2a55f in QThreadPrivate::start (arg=0x2abf940) at thread/qthread_unix.cpp:331
#9  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f96b17f9700 (LWP 32140)):
#0  g_source_iter_next (iter=iter@entry=0x7f96b17f8c40, source=source@entry=0x7f96b17f8c38) at gmain.c:923
#1  0x00007f9798c1444b in g_main_context_prepare (context=context@entry=0x7f96e49fc210, priority=priority@entry=0x7f96b17f8cb8) at gmain.c:3388
#2  0x00007f9798c14d80 in g_main_context_iterate (context=context@entry=0x7f96e49fc210, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f9798c14f7c in g_main_context_iteration (context=0x7f96e49fc210, may_block=1) at gmain.c:3869
#4  0x00007f979ce5ba5b in QEventDispatcherGlib::processEvents (this=0x7f96e4853880, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f979ce02a63 in QEventLoop::exec (this=this@entry=0x7f96b17f8df0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f979cc2584a in QThread::exec (this=this@entry=0x4b70540) at thread/qthread.cpp:503
#7  0x00007f979ff0e5f8 in QQmlThreadPrivate::run (this=0x4b70540) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f979cc2a55f in QThreadPrivate::start (arg=0x4b70540) at thread/qthread_unix.cpp:331
#9  0x00007f979bd3d0a4 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f979c53c04d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f97a2fea7c0 (LWP 6422)):
[KCrash Handler]
#6  0x0000000000000160 in ?? ()
#7  0x00007f979fed590b in qQmlPropertyCacheProperty<QV4::String const*> (engine=<optimized out>, obj=obj@entry=0x50e3440, name=name@entry=0x7f96eadca0f0, context=context@entry=0x2721a70, local=...) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlpropertycache.cpp:1296
#8  0x00007f979fecf635 in QQmlPropertyCache::property (engine=<optimized out>, obj=obj@entry=0x50e3440, name=name@entry=0x7f96eadca0f0, context=context@entry=0x2721a70, local=...) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/qml/qqmlpropertycache.cpp:1308
#9  0x00007f979fe4cf52 in QV4::QObjectWrapper::findProperty (this=this@entry=0x7f96eadca0e8, engine=engine@entry=0x12d4b20, qmlContext=qmlContext@entry=0x2721a70, name=0x7f96eadca0f0, revisionMode=revisionMode@entry=QV4::QObjectWrapper::IgnoreRevision, local=local@entry=0x7ffd2dfee370) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:258
#10 0x00007f979fe505bd in QV4::QObjectWrapper::getQmlProperty (this=0x7f96eadca0e8, qmlContext=0x2721a70, n=<optimized out>, revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, includeImports=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/jsruntime/qv4qobjectwrapper.cpp:284
#11 0x00007f979fe658a6 in get (hasProperty=0x0, name=<optimized out>, this=0x7f96eadca0e8) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/jsruntime/qv4object_p.h:276
#12 QV4::Runtime::getProperty (engine=0x12d4b20, object=..., nameIndex=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/qml/jsruntime/qv4runtime.cpp:672
#13 0x00007f96ea929847 in ?? ()
#14 0x0000000000000000 in ?? ()

Reported using DrKonqi