Application: plasma-discover (5.14.5)

Qt Version: 5.11.2
Frameworks Version: 5.54.0
Operating System: Linux 4.15.0-43-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
Discover crashes everytime that I open it.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb80813e200 (LWP 1239))]

Thread 10 (Thread 0x7fb7bd43f700 (LWP 1359)):
#0  0x00007fb7fdc02b81 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb7fdc0346b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb803fd304b in QEventDispatcherGlib::processEvents (this=0x7fb7b4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb803f7730a in QEventLoop::exec (this=this@entry=0x7fb7bd43eda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fb803da2bba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fb803dadadb in QThreadPrivate::start (arg=0x5648998591f0) at thread/qthread_unix.cpp:367
#7  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7bd43f700) at pthread_create.c:463
#8  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fb7bfe44700 (LWP 1329)):
#0  0x00007fb8036940b4 in __GI___libc_read (fd=22, buf=0x7fb7bfe43cd0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fb7fdc47cd0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb7fdc03027 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb7fdc034e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb7fdc038d2 in g_main_loop_run () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb7c31d4026 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007fb7fdc2b105 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7bfe44700) at pthread_create.c:463
#8  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fb7c0645700 (LWP 1328)):
#0  __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007fb803698be6 in __GI___poll (fds=0x5648989dded0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0x00007fb7fdc03539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb7fdc03691 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb7fdc2b105 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7c0645700) at pthread_create.c:463
#7  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fb7d193d700 (LWP 1311)):
#0  0x00007fb803698bf9 in __GI___poll (fds=0x7fb7c40049b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb7fdc03539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb803fd304b in QEventDispatcherGlib::processEvents (this=0x7fb7c4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb803f7730a in QEventLoop::exec (this=this@entry=0x7fb7d193cda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fb803da2bba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fb803dadadb in QThreadPrivate::start (arg=0x564899c29ab0) at thread/qthread_unix.cpp:367
#7  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7d193d700) at pthread_create.c:463
#8  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fb7d2ebe700 (LWP 1310)):
#0  0x00007fb803698bf9 in __GI___poll (fds=0x7fb7cc004e10, nfds=1, timeout=9256) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb7fdc03539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb803fd304b in QEventDispatcherGlib::processEvents (this=0x7fb7cc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb803f7730a in QEventLoop::exec (this=this@entry=0x7fb7d2ebdda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fb803da2bba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fb803dadadb in QThreadPrivate::start (arg=0x5648981f25f0) at thread/qthread_unix.cpp:367
#7  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7d2ebe700) at pthread_create.c:463
#8  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fb7dc51e700 (LWP 1309)):
#0  0x00007fb803698bf9 in __GI___poll (fds=0x7fb7d4004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb7fdc03539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb803fd304b in QEventDispatcherGlib::processEvents (this=0x7fb7d4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb803f7730a in QEventLoop::exec (this=this@entry=0x7fb7dc51dd30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fb803da2bba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fb8073b2826 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fb803dadadb in QThreadPrivate::start (arg=0x564899a3b770) at thread/qthread_unix.cpp:367
#8  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7dc51e700) at pthread_create.c:463
#9  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fb7e75ef700 (LWP 1249)):
#0  0x00007fb803698bf9 in __GI___poll (fds=0x7fb7e0004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb7fdc03539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb803fd304b in QEventDispatcherGlib::processEvents (this=0x7fb7e0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb803f7730a in QEventLoop::exec (this=this@entry=0x7fb7e75eed80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fb803da2bba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fb80494a4f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fb803dadadb in QThreadPrivate::start (arg=0x56489822f6a0) at thread/qthread_unix.cpp:367
#8  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7e75ef700) at pthread_create.c:463
#9  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fb7ecffc700 (LWP 1246)):
#0  0x00007fb7fdc49064 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb7fdc02427 in g_main_context_acquire () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb7fdc033f5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb803fd304b in QEventDispatcherGlib::processEvents (this=0x7fb7e8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fb803f7730a in QEventLoop::exec (this=this@entry=0x7fb7ecffbd70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007fb803da2bba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007fb805ca4e45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fb803dadadb in QThreadPrivate::start (arg=0x7fb805f1cd60) at thread/qthread_unix.cpp:367
#9  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7ecffc700) at pthread_create.c:463
#10 0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fb7f56d4700 (LWP 1245)):
#0  0x00007fb803698bf9 in __GI___poll (fds=0x7fb7f56d3ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb7fd338747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fb7fd33a36a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fb7f8694ed9 in QXcbEventReader::run (this=0x564898184400) at qxcbconnection.cpp:1391
#4  0x00007fb803dadadb in QThreadPrivate::start (arg=0x564898184400) at thread/qthread_unix.cpp:367
#5  0x00007fb7ffd9e6db in start_thread (arg=0x7fb7f56d4700) at pthread_create.c:463
#6  0x00007fb8036a588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fb80813e200 (LWP 1239)):
[KCrash Handler]
#6  0x00007fb80704bd62 in AbstractResource::reportNewState (this=0x56489a5a9c10) at ./libdiscover/resources/AbstractResource.cpp:143
#7  0x00007fb803fa818f in QtPrivate::QSlotObjectBase::call (a=0x7ffc943395d0, r=0x56489a5a9c10, this=0x564899f0af00) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:376
#8  QMetaObject::activate (sender=sender@entry=0x56489a5a9c10, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x0) at kernel/qobject.cpp:3754
#9  0x00007fb803fa8747 in QMetaObject::activate (sender=sender@entry=0x56489a5a9c10, m=m@entry=0x7fb80727e400 <AbstractResource::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x0) at kernel/qobject.cpp:3633
#10 0x00007fb80705ccf3 in AbstractResource::stateChanged (this=this@entry=0x56489a5a9c10) at ./obj-x86_64-linux-gnu/libdiscover/DiscoverCommon_autogen/3YJK5W5UP7/moc_AbstractResource.cpp:430
#11 0x00007fb7c1df4a2d in FwupdResource::setState (this=this@entry=0x56489a5a9c10, state=state@entry=AbstractResource::Upgradeable) at ./libdiscover/backends/FwupdBackend/FwupdResource.cpp:141
#12 0x00007fb7c1df9cb5 in FwupdBackend::createApp (this=this@entry=0x56489a103490, device=device@entry=0x7fb7b0002db0) at ./libdiscover/backends/FwupdBackend/FwupdBackend.cpp:235
#13 0x00007fb7c1dfa4e7 in FwupdBackend::addUpdates (this=0x56489a103490) at ./libdiscover/backends/FwupdBackend/FwupdBackend.cpp:146
#14 0x00007fb7c1dfadc1 in FwupdBackend::<lambda()>::operator() (__closure=0x564899b74550) at ./libdiscover/backends/FwupdBackend/FwupdBackend.cpp:414
#15 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, FwupdBackend::checkForUpdates()::<lambda()> >::call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:128
#16 QtPrivate::Functor<FwupdBackend::checkForUpdates()::<lambda()>, 0>::call<QtPrivate::List<>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:238
#17 QtPrivate::QFunctorSlotObject<FwupdBackend::checkForUpdates()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x564899b74540, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:421
#18 0x00007fb803fa818f in QtPrivate::QSlotObjectBase::call (a=0x7ffc943398c0, r=0x56489a103490, this=0x564899b74540) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:376
#19 QMetaObject::activate (sender=0x564899b7ffb0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3754
#20 0x00007fb803dab223 in QFutureWatcherBase::event (this=<optimized out>, event=0x7fb7b0004550) at thread/qfuturewatcher.cpp:332
#21 0x00007fb805594e1c in QApplicationPrivate::notify_helper (this=this@entry=0x56489818a520, receiver=receiver@entry=0x564899b7ffb0, e=e@entry=0x7fb7b0004550) at kernel/qapplication.cpp:3727
#22 0x00007fb80559c3ef in QApplication::notify (this=0x7ffc94339ed0, receiver=0x564899b7ffb0, e=0x7fb7b0004550) at kernel/qapplication.cpp:3486
#23 0x00007fb803f78fe8 in QCoreApplication::notifyInternal2 (receiver=0x564899b7ffb0, event=event@entry=0x7fb7b0004550) at kernel/qcoreapplication.cpp:1048
#24 0x00007fb803f7bb2d in QCoreApplication::sendEvent (event=0x7fb7b0004550, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x564898189f30) at kernel/qcoreapplication.cpp:1745
#26 0x00007fb803f7c0e8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#27 0x00007fb803fd39f3 in postEventSourceDispatch (s=0x56489818fd60) at kernel/qeventdispatcher_glib.cpp:276
#28 0x00007fb7fdc03387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007fb7fdc035c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fb7fdc0364c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fb803fd302f in QEventDispatcherGlib::processEvents (this=0x5648981d7d80, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#32 0x00007fb7f8720761 in QPAEventDispatcherGlib::processEvents (this=0x5648981d7d80, flags=...) at qeventdispatcher_glib.cpp:69
#33 0x00007fb803f7730a in QEventLoop::exec (this=this@entry=0x7ffc94339e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#34 0x00007fb803f804d0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#35 0x0000564897224868 in main (argc=<optimized out>, argv=<optimized out>) at ./discover/main.cpp:156

The reporter indicates this bug may be a duplicate of or related to bug 402328.

Possible duplicates by query: bug 403341, bug 403290, bug 403256, bug 402523, bug 402328.

Reported using DrKonqi