Bug 398488

Application: plasma-discover (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.51.0
Operating System: Linux 4.18.7-041807-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
- What I was doing when the application crashed:
The program presented crash after I tried to install wallpaper, themes and icons from what is provided by KDE. I reinstalled the operating system and the problem persists.

- Unusual behavior I noticed:
Crash. Dophin does not open.

- Custom settings of the application:
Default Settings

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa442abc8c0 (LWP 5672))]

Thread 5 (Thread 0x7fa40d06d700 (LWP 5679)):
#0  0x00007fa43dd6e74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4389ad38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4389ad49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa43e98f0bb in QEventDispatcherGlib::processEvents (this=0x7fa4080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fa43e9365ba in QEventLoop::exec (this=this@entry=0x7fa40d06ccf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fa43e76b5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fa43e776727 in QThreadPrivate::start (arg=0x21a37e0) at thread/qthread_unix.cpp:367
#7  0x00007fa43a8126ba in start_thread (arg=0x7fa40d06d700) at pthread_create.c:333
#8  0x00007fa43dd7a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa416fce700 (LWP 5678)):
#0  0x00007fa4389f1a79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa4389ad290 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4389ad49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa43e98f0bb in QEventDispatcherGlib::processEvents (this=0x7fa4100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fa43e9365ba in QEventLoop::exec (this=this@entry=0x7fa416fcdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fa43e76b5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fa441bbbf86 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fa43e776727 in QThreadPrivate::start (arg=0x20c7ea0) at thread/qthread_unix.cpp:367
#8  0x00007fa43a8126ba in start_thread (arg=0x7fa416fce700) at pthread_create.c:333
#9  0x00007fa43dd7a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa426dee700 (LWP 5676)):
#0  0x00007fa43dd6a27d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4389f06f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4389ace74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa4389ad330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa4389ad49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa43e98f0bb in QEventDispatcherGlib::processEvents (this=0x7fa4180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fa43e9365ba in QEventLoop::exec (this=this@entry=0x7fa426dedcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007fa43e76b5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#8  0x00007fa43f2f6195 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fa43e776727 in QThreadPrivate::start (arg=0x1921230) at thread/qthread_unix.cpp:367
#10 0x00007fa43a8126ba in start_thread (arg=0x7fa426dee700) at pthread_create.c:333
#11 0x00007fa43dd7a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa427fff700 (LWP 5675)):
#0  0x00007fa43dd6e74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4389ad38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4389ad49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa43e98f0bb in QEventDispatcherGlib::processEvents (this=0x7fa4200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fa43e9365ba in QEventLoop::exec (this=this@entry=0x7fa427ffecc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fa43e76b5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fa4406b1f35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fa43e776727 in QThreadPrivate::start (arg=0x7fa44092ad60) at thread/qthread_unix.cpp:367
#8  0x00007fa43a8126ba in start_thread (arg=0x7fa427fff700) at pthread_create.c:333
#9  0x00007fa43dd7a41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa442abc8c0 (LWP 5672)):
[KCrash Handler]
#6  0x00007fa43dca8428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007fa43dcaa02a in __GI_abort () at abort.c:89
#8  0x00007fa43dcea7ea in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7fa43de03ed8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#9  0x00007fa43dcf337a in malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7fa43de03fe8 "double free or corruption (out)", action=3) at malloc.c:5006
#10 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3867
#11 0x00007fa43dcf753c in __GI___libc_free (mem=<optimized out>) at malloc.c:2968
#12 0x00007fa440946738 in KConfigPrivate::~KConfigPrivate (this=0x30cc1c0, __in_chrg=<optimized out>) at /workspace/build/src/core/kconfig_p.h:73
#13 KConfig::~KConfig (this=0x7ffd97765800, __in_chrg=<optimized out>) at /workspace/build/src/core/kconfig.cpp:288
#14 0x00007fa407b890e3 in KNSCore::Engine::init (this=this@entry=0x30cc120, configfile=...) at /workspace/build/src/core/engine.cpp:105
#15 0x00007fa407dee8cd in KNSBackend::KNSBackend (this=0x30871a0, parent=<optimized out>, iconName=..., knsrc=...) at /workspace/build/libdiscover/backends/KNSBackend/KNSBackend.cpp:114
#16 0x00007fa407df21ce in KNSBackendFactory::newInstance (this=this@entry=0x307d760, parent=0x19968e0) at /workspace/build/libdiscover/backends/KNSBackend/KNSBackend.cpp:73
#17 0x00007fa44185c030 in DiscoverBackendsFactory::backendForFile (this=this@entry=0x7ffd97765d9f, libname=..., name=...) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:65
#18 0x00007fa44185c6b2 in DiscoverBackendsFactory::backend (this=this@entry=0x7ffd97765d9f, name=...) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:51
#19 0x00007fa44185cb16 in DiscoverBackendsFactory::<lambda(const QString&)>::operator() (name=..., __closure=<synthetic pointer>) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:99
#20 kTransform<QVector<AbstractResourcesBackend*>, QStringList, DiscoverBackendsFactory::allBackends() const::<lambda(const QString&)> > (op=..., input=...) at /workspace/build/libdiscover/utils.h:48
#21 DiscoverBackendsFactory::allBackends (this=this@entry=0x7ffd97765d9f) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:99
#22 0x00007fa441846d07 in ResourcesModel::registerAllBackends (this=0x19968e0) at /workspace/build/libdiscover/resources/ResourcesModel.cpp:208
#23 0x00007fa44186b635 in ResourcesModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/libdiscover/moc_ResourcesModel.cpp:291
#24 0x00007fa43e965fb9 in QObject::event (this=0x19968e0, e=<optimized out>) at kernel/qobject.cpp:1251
#25 0x00007fa43ff9239c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x19968e0, e=0x1997220) at kernel/qapplication.cpp:3727
#26 0x00007fa43ff99ab0 in QApplication::notify (this=0x7ffd977664b0, receiver=0x19968e0, e=0x1997220) at kernel/qapplication.cpp:3486
#27 0x00007fa43e938228 in QCoreApplication::notifyInternal2 (receiver=0x19968e0, event=event@entry=0x1997220) at kernel/qcoreapplication.cpp:1048
#28 0x00007fa43e93ae2e in QCoreApplication::sendEvent (event=0x1997220, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#29 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x18219f0) at kernel/qcoreapplication.cpp:1745
#30 0x00007fa43e93b2a8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#31 0x00007fa43e98fa93 in postEventSourceDispatch (s=0x18d3590) at kernel/qeventdispatcher_glib.cpp:276
#32 0x00007fa4389ad197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fa4389ad3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fa4389ad49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fa43e98f09f in QEventDispatcherGlib::processEvents (this=this@entry=0x18a4f30, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#36 0x00007fa4327929a1 in QPAEventDispatcherGlib::processEvents (this=0x18a4f30, flags=...) at qeventdispatcher_glib.cpp:69
#37 0x00007fa43e9365ba in QEventLoop::exec (this=this@entry=0x7ffd977663d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#38 0x00007fa43e93f6c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#39 0x00007fa43f77df8c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1762
#40 0x00007fa43ff922f5 in QApplication::exec () at kernel/qapplication.cpp:2901
#41 0x00000000004131ff in main (argc=1, argv=<optimized out>) at /workspace/build/discover/main.cpp:156

Possible duplicates by query: bug 398464, bug 398463, bug 398461, bug 398398, bug 398373.

Reported using DrKonqi