Bug 419422

Summary:	Discover crashed while conducting search
Product:	[Applications] Discover	Reporter:	mikbrand1088
Component:	discover	Assignee:	Dan Leinir Turthra Jensen <leinir>
Status:	RESOLVED UNMAINTAINED
Severity:	crash	CC:	aleixpol, nate
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.13.5
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description mikbrand1088 2020-03-30 15:38:33 UTC

Application: plasma-discover (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.18.0-25-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
- What I was doing when the application crashed:

I was using the search function to search for a "dictionary" application when it crashed

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfe27e8c34) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
[Current thread is 1 (Thread 0x7fede6172c80 (LWP 20595))]

Thread 10 (Thread 0x7fedb61b2700 (LWP 20695)):
#0  0x00007fede9595629 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fede954e94c in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fede954ef10 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fedebb1615b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fedeb9120b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fedb71f1700 (LWP 20611)):
[KCrash Handler]
#6  0x00007fedeae74ce4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007fedeae736c9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007fedebaedf92 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fedec91e4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fedec925ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fedebac4499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fedebac748b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fedebb16b23 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fede954ed5e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fede954eff8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007fedebb16143 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fedeb9120b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#22 0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fedc9d63700 (LWP 20604)):
#0  0x00007fedeb5f06d9 in __GI___poll (fds=0x7fedb80b0220, nfds=1, timeout=44270) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fede954ef66 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fedebb1615b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fedeb9120b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fedca95d700 (LWP 20603)):
#0  0x00007fede954e3e7 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fede954ee9b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fedebb1615b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fedeb9120b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fedd173a700 (LWP 20602)):
#0  0x00007fede954ea33 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fede954ef10 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fedebb1615b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fedeb9120b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007feded35f396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fedd2999700 (LWP 20601)):
#0  0x00007fedea6aa2eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfdd2e803c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fedea6aa2eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x55cfdd2e7fe8, cond=0x55cfdd2e8010) at pthread_cond_wait.c:502
#2  0x00007fedea6aa2eb in __pthread_cond_wait (cond=0x55cfdd2e8010, mutex=0x55cfdd2e7fe8) at pthread_cond_wait.c:655
#3  0x00007fedd3058ebb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fedd3058c27 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fede180d700 (LWP 20600)):
#0  0x00007fede9595629 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fede954df70 in g_main_context_acquire () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fede954ee25 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fedebb1615b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fedeb9120b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fedec1041f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fede2a2c700 (LWP 20599)):
#0  0x00007fedeb5ebf64 in __GI___libc_read (fd=7, buf=0x7fede2a2bb50, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fede95942a0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fede954ea3f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fede954ef10 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fedebb1615b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fedeb9120b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fedece2f545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fede46e2700 (LWP 20598)):
#0  0x00007fedeb5f06d9 in __GI___poll (fds=0x7fede46e1cb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fede94e3917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fede94e553a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fede5aab159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fedeb91bc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fedea6a4164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fedeb5fcdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fede6172c80 (LWP 20595)):
#0  0x00007fedea6aa2eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cfe27e8c34) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fedea6aa2eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x55cfdcfd1088, cond=0x55cfe27e8c08) at pthread_cond_wait.c:502
#2  0x00007fedea6aa2eb in __pthread_cond_wait (cond=0x55cfe27e8c08, mutex=0x55cfdcfd1088) at pthread_cond_wait.c:655
#3  0x00007fede94e3b22 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007fede94e562a in xcb_wait_for_special_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007fedd3e19f7b in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#6  0x00007fedd3e1a0c8 in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#7  0x00007fedd3e1b30e in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#8  0x00007fedd3e1c16c in  () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#9  0x00007fedd31a2901 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#10 0x00007fedd31a3001 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#11 0x00007fedd319e2f1 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#12 0x00007feded3a26a2 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007feded3a7f02 in QSGBatchRenderer::Renderer::render() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007feded39852c in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007feded3989eb in QSGRenderer::renderScene(unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007feded3d2370 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007feded434350 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007feded3c489e in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007feded43f926 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007fedec91e4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fedec925ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fedebac4499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fedec3708c1 in QWindowPrivate::deliverUpdateRequest() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#24 0x00007fedec370df9 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#25 0x00007feded43f87b in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007fedec91e4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fedec925ae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fedebac4499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fedebb15558 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fedebb15dec in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fede954ed5e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fede954eff8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fede954f08c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fedebb16143 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fede5b3ce51 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#36 0x00007fedebac316b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007fedebacb2e2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x000055cfdbc16ae3 in  ()
#39 0x00007fedeb50609b in __libc_start_main (main=0x55cfdbc16510, argc=1, argv=0x7fff9b955428, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff9b955418) at ../csu/libc-start.c:308
#40 0x000055cfdbc1708a in _start ()
[Inferior 1 (process 20595) detached]

Reported using DrKonqi

Comment 1 Nate Graham 2020-04-15 00:39:12 UTC

Plasma 5.13 and Ubuntu 18.10 are very old versions, both having reached end-of-life. Please upgrade to a newer version, as it very likely that this crash has been fixed in the last year and a half.