Application: muon-discover (2.1.0)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-12-generic x86_64
Distribution: Ubuntu 13.10

-- Information about the crash:
- What I was doing when the application crashed:
Uninstalling several built-in applications in my freshly installed Kubuntu 13.10 VM (Windows 8.1 64bit Host) under VMware Player 6.0.1

This isn't always reproducible. Furthermore, the selected applications will eventually get uninstalled.
I don't know at the moment if this problem can be reproduced on a real installation.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Muon Discover (muon-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc8404827c0 (LWP 2544))]

Thread 5 (Thread 0x7fc825afb700 (LWP 2546)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc839c6806b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fc839c680a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fc835e2bf6e in start_thread (arg=0x7fc825afb700) at pthread_create.c:311
#4  0x00007fc83d14d9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7fc7a4810700 (LWP 2547)):
#0  0x00007fc83d140f7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fc835953694 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc83595379c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc83d8c6a76 in QEventDispatcherGlib::processEvents (this=0x7fc7a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fc83d8985ef in QEventLoop::processEvents (this=this@entry=0x7fc7a480fd70, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fc83d8988e5 in QEventLoop::exec (this=this@entry=0x7fc7a480fd70, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fc83d79788f in QThread::exec (this=this@entry=0x277df50) at thread/qthread.cpp:542
#7  0x00007fc83d879d13 in QInotifyFileSystemWatcherEngine::run (this=0x277df50) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007fc83d799f2f in QThreadPrivate::start (arg=0x277df50) at thread/qthread_unix.cpp:338
#9  0x00007fc835e2bf6e in start_thread (arg=0x7fc7a4810700) at pthread_create.c:311
#10 0x00007fc83d14d9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7fc79a078700 (LWP 2548)):
#0  0x00007fc83d140f7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fc835953694 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc83595379c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc83d8c6a76 in QEventDispatcherGlib::processEvents (this=0x7fc7940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fc83d8985ef in QEventLoop::processEvents (this=this@entry=0x7fc79a077db0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fc83d8988e5 in QEventLoop::exec (this=this@entry=0x7fc79a077db0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fc83d79788f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#7  0x00007fc83d799f2f in QThreadPrivate::start (arg=0x2787cd0) at thread/qthread_unix.cpp:338
#8  0x00007fc835e2bf6e in start_thread (arg=0x7fc79a078700) at pthread_create.c:311
#9  0x00007fc83d14d9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fc798bc0700 (LWP 2549)):
#0  0x00007fc8359930dd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc835993389 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc835952fde in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc83595362b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc83595379c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc83d8c6a76 in QEventDispatcherGlib::processEvents (this=0x7fc78c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fc83d8985ef in QEventLoop::processEvents (this=this@entry=0x7fc798bbfdb0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fc83d8988e5 in QEventLoop::exec (this=this@entry=0x7fc798bbfdb0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fc83d79788f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007fc83d799f2f in QThreadPrivate::start (arg=0x2aa81e0) at thread/qthread_unix.cpp:338
#10 0x00007fc835e2bf6e in start_thread (arg=0x7fc798bc0700) at pthread_create.c:311
#11 0x00007fc83d14d9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fc8404827c0 (LWP 2544)):
[KCrash Handler]
#6  __strlen_sse2_pminub () at ../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S:38
#7  0x00007fc792fb9493 in qstrlen (str=0x8f706f <Address 0x8f706f out of bounds>) at /usr/include/qt4/QtCore/qbytearray.h:80
#8  size (a=...) at /usr/include/qt4/QtCore/qstringbuilder.h:237
#9  size (p=...) at /usr/include/qt4/QtCore/qstringbuilder.h:399
#10 size (p=...) at /usr/include/qt4/QtCore/qstringbuilder.h:399
#11 convertTo<QString> (this=<optimized out>) at /usr/include/qt4/QtCore/qstringbuilder.h:121
#12 operator QStringBuilder<QStringBuilder<QLatin1String, QLatin1String>, QLatin1String>::ConvertTo (this=<optimized out>) at /usr/include/qt4/QtCore/qstringbuilder.h:139
#13 QApt::Package::installedFilesList (this=0x3552710) at /build/buildd/qapt-2.0.65/src/package.cpp:447
#14 0x00007fc791407d56 in Application::findExecutables (this=0x7fc77454f3c0) at /build/buildd/muon-2.1.0/libmuon/backends/ApplicationBackend/Application.cpp:446
#15 0x00007fc791407f01 in Application::canExecute (this=<optimized out>) at /build/buildd/muon-2.1.0/libmuon/backends/ApplicationBackend/Application.cpp:475
#16 0x00007fc84007ffd3 in AbstractResource::qt_metacall (this=this@entry=0x7fc77454f3c0, _c=_c@entry=QMetaObject::ReadProperty, _id=4, _a=_a@entry=0x7fffcae48200) at /build/buildd/muon-2.1.0/obj-x86_64-linux-gnu/libmuon/moc_AbstractResource.cpp:185
#17 0x00007fc7913fecc5 in Application::qt_metacall (this=0x7fc77454f3c0, _c=QMetaObject::ReadProperty, _id=<optimized out>, _a=0x7fffcae48200) at /build/buildd/muon-2.1.0/obj-x86_64-linux-gnu/libmuon/backends/ApplicationBackend/moc_Application.cpp:87
#18 0x00007fc83f6025d5 in QDeclarativeObjectScriptClass::property (this=this@entry=0x2778fb0, obj=<optimized out>, name=@0x7fffcae482a8: 0x7fc79a151540) at qml/qdeclarativeobjectscriptclass.cpp:296
#19 0x00007fc83f6027dc in QDeclarativeObjectScriptClass::property (this=0x2778fb0, object=<optimized out>, name=@0x7fffcae482a8: 0x7fc79a151540) at qml/qdeclarativeobjectscriptclass.cpp:218
#20 0x00007fc839cdf551 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#21 0x00007fc839b7f115 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#22 0x00007fc839bb6e2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#23 0x00007fc7a5353d14 in ?? ()
#24 0x0000000000000000 in ?? ()

Reported using DrKonqi