Bug 385541

Application: plasmashell (5.10.5)

Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.10.0-33-generic x86_64
Distribution: KDE neon User Edition 5.10

-- Information about the crash:
I'm not doing something special. More or less the usual stuff: I have 1-2 firefox windows open, kate, jetbrains intelij (doing some programming) and maybe a couple more applications. 

At random times plasmashell crashes and restarts and I really cannot tell why. It just crashes out of the blue

I have 2 monitors connected in an AMD  GPU
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:67ef] (rev cf) (prog-if 00 [VGA controller])
        Subsystem: Gigabyte Technology Co., Ltd Device [1458:22dd]
        Flags: bus master, fast devsel, latency 0, IRQ 125
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at d0000000 (64-bit, prefetchable) [size=2M]
        I/O ports at e000 [size=256]
        Memory at dfe00000 (32-bit, non-prefetchable) [size=256K]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [48] Vendor Specific Information: Len=08 <?>
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
        Capabilities: [150] Advanced Error Reporting
        Capabilities: [200] #15
        Capabilities: [270] #19
        Capabilities: [2b0] Address Translation Service (ATS)
        Capabilities: [2c0] #13
        Capabilities: [2d0] #1b
        Capabilities: [320] Latency Tolerance Reporting
        Capabilities: [328] Alternative Routing-ID Interpretation (ARI)
        Capabilities: [370] L1 PM Substates
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
[Current thread is 1 (Thread 0x7fa5ead7d8c0 (LWP 1327))]

Thread 16 (Thread 0x7fa4dfefe700 (LWP 7143)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fa5e555f2bd in _int_free (av=0x7fa4d8000020, p=0x7fa4d80033f0, have_lock=0) at malloc.c:3962
#2  0x00007fa5e556353c in __GI___libc_free (mem=<optimized out>) at malloc.c:2968
#3  0x00007fa5e0f7428a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa5e5f02e52 in QEventDispatcherGlib::~QEventDispatcherGlib (this=0x7fa4d80013d0, __in_chrg=<optimized out>) at kernel/qeventdispatcher_glib.cpp:374
#5  0x00007fa5e5f03059 in QEventDispatcherGlib::~QEventDispatcherGlib (this=0x7fa4d80013d0, __in_chrg=<optimized out>) at kernel/qeventdispatcher_glib.cpp:402
#6  0x00007fa5e5cd8b1f in QThreadPrivate::finish (arg=arg@entry=0x408f3f0) at thread/qthread_unix.cpp:396
#7  0x00007fa5e5cd9991 in __pthread_cleanup_class::~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:561
#8  QThreadPrivate::start (arg=0x408f3f0) at thread/qthread_unix.cpp:325
#9  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa4dfefe700) at pthread_create.c:333
#10 0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fa4f4a09700 (LWP 2255)):
#0  0x00007fa5e55d624d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa5e0fba6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5e0f76e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5e0f77330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa5e5f0294b in QEventDispatcherGlib::processEvents (this=0x7fa4e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7fa4f4a08cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007fa5e5cd4cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#8  0x00007fa4f5c20517 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x3eb56d0) at thread/qthread_unix.cpp:368
#10 0x00007fa5e4b7f6ba in start_thread (arg=0x7fa4f4a09700) at pthread_create.c:333
#11 0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fa4ff3e4700 (LWP 2193)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fa5e556322a in __GI___libc_malloc (bytes=140346377895968) at malloc.c:2911
#2  0x00007fa5e5d30e19 in QHashData::allocateNode (this=<optimized out>, nodeAlign=<optimized out>) at tools/qhash.cpp:502
#3  0x00007fa5e3647cec in QNetworkConfigurationManagerPrivate::pollEngines() () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007fa5e36cd6dd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007fa5e5ed9c19 in QMetaObject::activate (sender=sender@entry=0x7fa4f00110d0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fa4ff3e3960) at kernel/qobject.cpp:3766
#6  0x00007fa5e5eda527 in QMetaObject::activate (sender=sender@entry=0x7fa4f00110d0, m=m@entry=0x7fa5e6164e00 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fa4ff3e3960) at kernel/qobject.cpp:3628
#7  0x00007fa5e5ee64a7 in QTimer::timeout (this=this@entry=0x7fa4f00110d0, _t1=...) at .moc/moc_qtimer.cpp:201
#8  0x00007fa5e5ee67a8 in QTimer::timerEvent (this=0x7fa4f00110d0, e=<optimized out>) at kernel/qtimer.cpp:255
#9  0x00007fa5e5edac13 in QObject::event (this=0x7fa4f00110d0, e=<optimized out>) at kernel/qobject.cpp:1268
#10 0x00007fa5e5ead78b in doNotify (event=0x7fa4ff3e3ab0, receiver=0x7fa4f00110d0) at kernel/qcoreapplication.cpp:1093
#11 QCoreApplication::notify (event=<optimized out>, receiver=<optimized out>, this=<optimized out>) at kernel/qcoreapplication.cpp:1079
#12 QCoreApplication::notifyInternal2 (receiver=0x7fa4f00110d0, event=event@entry=0x7fa4ff3e3ab0) at kernel/qcoreapplication.cpp:1018
#13 0x00007fa5e5f01cfe in QCoreApplication::sendEvent (event=0x7fa4ff3e3ab0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#14 QTimerInfoList::activateTimers (this=0x7fa4f00030d0) at kernel/qtimerinfo_unix.cpp:643
#15 0x00007fa5e5f02581 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:182
#16 0x00007fa5e0f77197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007fa5e0f773f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fa5e5f0294b in QEventDispatcherGlib::processEvents (this=0x7fa4f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#20 0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7fa4ff3e3d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#21 0x00007fa5e5cd4cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#22 0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x2af5200) at thread/qthread_unix.cpp:368
#23 0x00007fa5e4b7f6ba in start_thread (arg=0x7fa4ff3e4700) at pthread_create.c:333
#24 0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fa4ffbe5700 (LWP 2192)):
[KCrash Handler]
#6  0x00007fa5e5514428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007fa5e551602a in __GI_abort () at abort.c:89
#8  0x00007fa5e55567ea in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7fa5e566fe98 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#9  0x00007fa5e5561651 in malloc_printerr (ar_ptr=0x7fa4ffbe3cd0, ptr=0x7fa4f801bb3f, str=0x7fa5e56702a0 "malloc(): memory corruption (fast)", action=3) at malloc.c:5006
#10 _int_malloc (av=av@entry=0x7fa4f8000020, bytes=bytes@entry=64) at malloc.c:3386
#11 0x00007fa5e5563184 in __GI___libc_malloc (bytes=64) at malloc.c:2913
#12 0x00007fa5e5cdac6d in QArrayData::allocate (objectSize=objectSize@entry=16, alignment=alignment@entry=8, capacity=2, capacity@entry=1, options=...) at tools/qarraydata.cpp:118
#13 0x00007fa4ffcfcfcf in QTypedArrayData<QPair<QList<QExplicitlySharedDataPointer<QPatternist::Expression> >, int> >::allocate (options=..., capacity=1) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:223
#14 QVector<QPair<QList<QExplicitlySharedDataPointer<QPatternist::Expression> >, int> >::reallocData (this=this@entry=0x7fa4ffbe3e50, asize=0, aalloc=1, options=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:544
#15 0x00007fa4ffcfd34d in QVector<QPair<QList<QExplicitlySharedDataPointer<QPatternist::Expression> >, int> >::append (this=this@entry=0x7fa4ffbe3e50, t=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:644
#16 0x00007fa4ffcfd80b in QStack<QPair<QList<QExplicitlySharedDataPointer<QPatternist::Expression> >, int> >::push (t=..., this=0x7fa4ffbe3e50) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstack.h:54
#17 QPatternist::OperandsIterator::OperandsIterator (treatParent=QPatternist::OperandsIterator::IncludeParent, start=..., this=0x7fa4ffbe3e50) at expr/qoperandsiterator_p.h:100
#18 QPatternist::ExpressionFactory::registerLastPath (operand=...) at expr/qexpressionfactory.cpp:416
#19 0x00007fa4ffcff4fe in QPatternist::ExpressionFactory::createExpression (this=this@entry=0x7fa4f8036910, tokenizer=..., context=..., lang=lang@entry=QXmlQuery::XQuery10, requiredType=..., queryURI=..., initialTemplateName=...) at expr/qexpressionfactory.cpp:400
#20 0x00007fa4ffd00998 in QPatternist::ExpressionFactory::createExpression (this=0x7fa4f8036910, device=device@entry=0x7fa4ffbe4470, context=..., lang=lang@entry=QXmlQuery::XQuery10, requiredType=..., queryURI=..., initialTemplateName=...) at expr/qexpressionfactory.cpp:123
#21 0x00007fa4ffcadf35 in QXmlQueryPrivate::expression (this=0x7fa4f8015660, queryDevice=0x7fa4ffbe4470) at api/qxmlquery_p.h:252
#22 0x00007fa4ffcabc9e in QXmlQuery::setQuery (this=0x7fa4ffbe4520, sourceCode=0x7fa4ffbe4470, documentURI=...) at api/qxmlquery.cpp:429
#23 0x00007fa4ffcac8a8 in QXmlQuery::setQuery (this=this@entry=0x7fa4ffbe4520, sourceCode=..., documentURI=...) at api/qxmlquery.cpp:448
#24 0x00007fa50403575a in QQuickXmlQueryEngine::doSubQueryJob (this=this@entry=0x2c8e070, currentJob=currentJob@entry=0x7fa4ffbe4740, currentResult=currentResult@entry=0x7fa4ffbe4670) at qqmlxmllistmodel.cpp:490
#25 0x00007fa504035c40 in QQuickXmlQueryEngine::processQuery (this=this@entry=0x2c8e070, job=job@entry=0x7fa4ffbe4740) at qqmlxmllistmodel.cpp:368
#26 0x00007fa5040367a8 in QQuickXmlQueryEngine::processJobs (this=0x2c8e070) at qqmlxmllistmodel.cpp:345
#27 0x00007fa50403690d in QQuickXmlQueryThreadObject::event (this=<optimized out>, e=<optimized out>) at qqmlxmllistmodel.cpp:243
#28 0x00007fa5e68153fc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x7fa4f80013a0, e=0x1a0d630) at kernel/qapplication.cpp:3717
#29 0x00007fa5e681ce07 in QApplication::notify (this=0x7ffd48420a80, receiver=0x7fa4f80013a0, e=0x1a0d630) at kernel/qapplication.cpp:3476
#30 0x00007fa5e5ead798 in QCoreApplication::notifyInternal2 (receiver=0x7fa4f80013a0, event=event@entry=0x1a0d630) at kernel/qcoreapplication.cpp:1018
#31 0x00007fa5e5eaff7b in QCoreApplication::sendEvent (event=0x1a0d630, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#32 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1f1c870) at kernel/qcoreapplication.cpp:1678
#33 0x00007fa5e5eb03e8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1532
#34 0x00007fa5e5f03323 in postEventSourceDispatch (s=0x7fa4f80012d0) at kernel/qeventdispatcher_glib.cpp:276
#35 0x00007fa5e0f77197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fa5e0f773f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fa5e5f0292f in QEventDispatcherGlib::processEvents (this=0x7fa4f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#39 0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7fa4ffbe4ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#40 0x00007fa5e5cd4cd4 in QThread::exec (this=this@entry=0x2c8e070) at thread/qthread.cpp:515
#41 0x00007fa504036975 in QQuickXmlQueryEngine::run (this=0x2c8e070) at qqmlxmllistmodel.cpp:323
#42 0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x2c8e070) at thread/qthread_unix.cpp:368
#43 0x00007fa5e4b7f6ba in start_thread (arg=0x7fa4ffbe5700) at pthread_create.c:333
#44 0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fa504852700 (LWP 2131)):
#0  0x00007fa5e55da70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa5e0f7738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5e5f0294b in QEventDispatcherGlib::processEvents (this=0x7fa5000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7fa504851d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fa5e5cd4cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x2bd3650) at thread/qthread_unix.cpp:368
#7  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa504852700) at pthread_create.c:333
#8  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fa5370b4700 (LWP 1893)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa5c1bd674b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fa5c1bd6477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5370b4700) at pthread_create.c:333
#4  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fa5378b5700 (LWP 1892)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa5c1bd674b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fa5c1bd6477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5378b5700) at pthread_create.c:333
#4  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fa5380b6700 (LWP 1891)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa5c1bd674b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fa5c1bd6477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5380b6700) at pthread_create.c:333
#4  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fa5388b7700 (LWP 1890)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa5c1bd674b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fa5c1bd6477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5388b7700) at pthread_create.c:333
#4  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa5390b8700 (LWP 1889)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa5c1bd674b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fa5c1bd6477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5390b8700) at pthread_create.c:333
#4  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa5c2daa700 (LWP 1886)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa5ea7e2784 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fa5ea7e27c9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5c2daa700) at pthread_create.c:333
#4  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa5cd171700 (LWP 1572)):
#0  0x00007fa5e55da70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa5e0f7738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5e5f0292f in QEventDispatcherGlib::processEvents (this=0x7fa5bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#4  0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7fa5cd170ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fa5e5cd4cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007fa5e83a30c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x1693890) at thread/qthread_unix.cpp:368
#8  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5cd171700) at pthread_create.c:333
#9  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa5cf1e2700 (LWP 1417)):
#0  0x00007fa5e55da70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa5e0f7738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5e5f0292f in QEventDispatcherGlib::processEvents (this=0x7fa5c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#4  0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7fa5cf1e1ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fa5e5cd4cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007fa5e83a30c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x1612620) at thread/qthread_unix.cpp:368
#8  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5cf1e2700) at pthread_create.c:333
#9  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa5d4d4c700 (LWP 1347)):
#0  0x00007fa5e55da70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa5e0f7738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5e5f0294b in QEventDispatcherGlib::processEvents (this=0x7fa5c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7fa5d4d4bcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fa5e5cd4cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007fa5eaebcb75 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x7fa5eaf32da0) at thread/qthread_unix.cpp:368
#8  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5d4d4c700) at pthread_create.c:333
#9  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa5d656c700 (LWP 1338)):
#0  0x00007fa5e55da70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa5e9749c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa5e974b8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa5d86b2329 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fa5e5cd9989 in QThreadPrivate::start (arg=0x1531b40) at thread/qthread_unix.cpp:368
#5  0x00007fa5e4b7f6ba in start_thread (arg=0x7fa5d656c700) at pthread_create.c:333
#6  0x00007fa5e55e63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa5ead7d8c0 (LWP 1327)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fa5e5562f7b in __malloc_fork_lock_parent () at arena.c:155
#2  0x00007fa5e55ab5da in __libc_fork () at ../sysdeps/nptl/fork.c:131
#3  0x00007fa5e5e43d36 in forkfd (flags=flags@entry=1, ppid=ppid@entry=0x7ffd4842004c) at io/../../3rdparty/forkfd/forkfd.c:689
#4  0x00007fa5e5e37a8c in QProcessPrivate::startProcess (this=this@entry=0x19e83f0) at io/qprocess_unix.cpp:475
#5  0x00007fa5e5e3214e in QProcessPrivate::start (this=this@entry=0x19e83f0, mode=..., mode@entry=...) at io/qprocess.cpp:2175
#6  0x00007fa5e5e323b1 in QProcess::start (this=<optimized out>, program=..., arguments=..., mode=...) at io/qprocess.cpp:2087
#7  0x00007fa52ac9fd5d in ExecutableContainer::exec (this=0x19f81a0) at /workspace/build/dataengines/executable/executable.cpp:60
#8  0x00007fa5e5ed9f46 in QtPrivate::QSlotObjectBase::call (a=0x7ffd484203a0, r=0x19f81a0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:101
#9  QMetaObject::activate (sender=0x19f81a0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3749
#10 0x00007fa5e92ca5f2 in Plasma::DataContainer::updateRequested(Plasma::DataContainer*) () from /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#11 0x00007fa5e92d9c28 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#12 0x00007fa5e5edac13 in QObject::event (this=0x19e8680, e=<optimized out>) at kernel/qobject.cpp:1268
#13 0x00007fa5e68153fc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x19e8680, e=0x7ffd484206c0) at kernel/qapplication.cpp:3717
#14 0x00007fa5e681ce07 in QApplication::notify (this=0x7ffd48420a80, receiver=0x19e8680, e=0x7ffd484206c0) at kernel/qapplication.cpp:3476
#15 0x00007fa5e5ead798 in QCoreApplication::notifyInternal2 (receiver=0x19e8680, event=event@entry=0x7ffd484206c0) at kernel/qcoreapplication.cpp:1018
#16 0x00007fa5e5f01cfe in QCoreApplication::sendEvent (event=0x7ffd484206c0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#17 QTimerInfoList::activateTimers (this=0x156d0a0) at kernel/qtimerinfo_unix.cpp:643
#18 0x00007fa5e5f02581 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:182
#19 0x00007fa5e0f77197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fa5e0f773f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fa5e0f7749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fa5e5f0292f in QEventDispatcherGlib::processEvents (this=0x158bd20, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#23 0x00007fa5e5eab7ca in QEventLoop::exec (this=this@entry=0x7ffd48420910, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#24 0x00007fa5e5eb4704 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#25 0x000000000041cd68 in main (argc=1, argv=<optimized out>) at /workspace/build/shell/main.cpp:166

Possible duplicates by query: bug 385317, bug 384146, bug 382018, bug 381398, bug 381268.

Reported using DrKonqi