Bug 423627

Application: plasma-discover (5.12.8)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-106-generic x86_64
Distribution: Ubuntu 18.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:
clicked Discover link to install KIO and Discover crash every time

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 0x7f0835437800 (LWP 30937))]

Thread 10 (Thread 0x7f07e9457700 (LWP 30957)):
#0  0x00007f08309cb839 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f08310db775 in QBasicMutex::lockInternal() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f082e90df96 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#3  0x00007f082e90e835 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#4  0x00007f082e8ea8cc in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#5  0x00007f082e8eb578 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#6  0x00007f082e8f3379 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f08312f1555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f082e8bdf09 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007f082e8c0e78 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f082e8d17ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f08335bc83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f08335c4104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f08312c28d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f083131c4ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f082b13c417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f082b13c650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f083131b8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f08312c090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f08310df23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f08310e417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f082d2976db in start_thread (arg=0x7f07e9457700) at pthread_create.c:463
#23 0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f07ebb2f700 (LWP 30946)):
#0  0x00007f082d29d9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f07e4043500) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f082d29d9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f07e40434b0, cond=0x7f07e40434d8) at pthread_cond_wait.c:502
#2  0x00007f082d29d9f3 in __pthread_cond_wait (cond=0x7f07e40434d8, mutex=0x7f07e40434b0) at pthread_cond_wait.c:655
#3  0x00007f08310e55ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f08310ddc1b in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f08312f1868 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f082e915df2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007f082e916d4c in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007f08312f1555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f082e914eb2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007f082e87623f in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007f082e8776cc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007f08312f1555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f082e8e9dd2 in QSslSocket::preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator*) () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007f082e90dcdc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007f07f8145156 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#16 0x00007f07f81432eb in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#17 0x00007f07f814d25e in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#18 0x00007f07f814c157 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#19 0x00007f07f81384c4 in SSL_do_handshake () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#20 0x00007f082e90e10d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#21 0x00007f082e90e835 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#22 0x00007f082e8ea8cc in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#23 0x00007f082e8eb578 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#24 0x00007f082e8f3379 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#25 0x00007f08312f1555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f082e8bdf09 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#27 0x00007f082e8c0e78 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#28 0x00007f082e8d17ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#29 0x00007f08335bc83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f08335c4104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f08312c28d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f083131c4ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f082b13c417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f082b13c650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f083131b88f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f08312c090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f08310df23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f08310e417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f082d2976db in start_thread (arg=0x7f07ebb2f700) at pthread_create.c:463
#41 0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f07f9b36700 (LWP 30945)):
#0  0x00007f082b13c130 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f082b13c650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f082b13c962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f07ff2f7276 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f082b164175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f082d2976db in start_thread (arg=0x7f07f9b36700) at pthread_create.c:463
#6  0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f07fa337700 (LWP 30944)):
#0  0x00007f08309c4bf9 in __GI___poll (fds=0x55b5d8a0fd50, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f082b13c5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f082b13c721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f082b164175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f082d2976db in start_thread (arg=0x7f07fa337700) at pthread_create.c:463
#6  0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f07fb65f700 (LWP 30943)):
#0  0x00007f082b13bf08 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f082b13c570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f083131b8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f08312c090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f08310df23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f08310e417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f082d2976db in start_thread (arg=0x7f07fb65f700) at pthread_create.c:463
#8  0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f08091cf700 (LWP 30942)):
#0  0x00007f082b182644 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f082b13bb18 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f082b13c4fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f083131b8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f08312c090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f08310df23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f08344e72a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f08310e417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f082d2976db in start_thread (arg=0x7f08091cf700) at pthread_create.c:463
#10 0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f0813fff700 (LWP 30940)):
#0  0x00007f08309c4bf9 in __GI___poll (fds=0x7f080c004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f082b13c5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f083131b8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f08312c090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f08310df23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f0831d006f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f08310e417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f082d2976db in start_thread (arg=0x7f0813fff700) at pthread_create.c:463
#9  0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f081928f700 (LWP 30939)):
#0  0x00007f082b13b457 in g_main_context_acquire () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f082b13c485 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f083131b8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f08312c090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f08310df23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f08324e5d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f08310e417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f082d2976db in start_thread (arg=0x7f081928f700) at pthread_create.c:463
#9  0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f08226df700 (LWP 30938)):
#0  0x00007f08309c4bf9 in __GI___poll (fds=0x7f08226deca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f082aed3747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f082aed536a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f08254ca5e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f08310e417d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f082d2976db in start_thread (arg=0x7f08226df700) at pthread_create.c:463
#6  0x00007f08309d188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f0835437800 (LWP 30937)):
[KCrash Handler]
#6  0x00007f08308eee97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f08308f0801 in __GI_abort () at abort.c:79
#8  0x00007f08310cefb7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f083454a2a7 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f083454b275 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f083454be9a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f0832e053d5 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f08345c06c5 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f08335bc83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f08335c4104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f08312c28d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f0832dfa49f in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f0832dfb0dd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f0832dd22eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f082552f260 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f082b13c417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f082b13c650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f082b13c6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f083131b88f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f08312c090a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f08312c99b4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x000055b5d794a148 in  ()
#28 0x00007f08308d1b97 in __libc_start_main (main=0x55b5d7949870, argc=1, argv=0x7ffd3e646e68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd3e646e58) at ../csu/libc-start.c:310
#29 0x000055b5d794a3ca in _start ()

Reported using DrKonqi