https://bugs.kde.org/show_bug.cgi?id=381081
Bug ID: 381081
Summary: Discover crashes when searching immediately after it
starts
Product: Discover
Version: 5.10.1
Platform: Kubuntu Packages
OS: Linux
Status: UNCONFIRMED
Severity: crash
Priority: NOR
Component: discover
Assignee: aleix...@kde.org
Reporter: zwjma...@gmail.com
Target Milestone: ---
If I start searching too quickly after the application window opens, Discover
crashes. If I wait a few seconds after opening Discover and then search, it
doesn't crash.
This crash is repeatable and happens 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 0x7fd47c1a98c0 (LWP 7109))]
Thread 20 (Thread 0x7fd3c8ff9700 (LWP 7153)):
#0 0x00007fd472434ef4 in g_mutex_unlock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007fd4723eeb70 in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef49b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fd47836af2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd47831488a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd478141fe3 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007fd4745206da in start_thread (arg=0x7fd3c8ff9700) at
pthread_create.c:456
#9 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 19 (Thread 0x7fd3c97fa700 (LWP 7152)):
#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1 0x00007fd478147a86 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd4781432b2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd4745206da in start_thread (arg=0x7fd3c97fa700) at
pthread_create.c:456
#5 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 18 (Thread 0x7fd3e97fa700 (LWP 7145)):
#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1 0x00007fd478147a86 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd4781432b2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd4745206da in start_thread (arg=0x7fd3e97fa700) at
pthread_create.c:456
#5 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 17 (Thread 0x7fd434ff9700 (LWP 7132)):
#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1 0x00007fd478147a86 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd4781432b2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd4745206da in start_thread (arg=0x7fd434ff9700) at
pthread_create.c:456
#5 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 16 (Thread 0x7fd435ffb700 (LWP 7130)):
#0 0x00007fd47773e18d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fd4723ef576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd47836af2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd47831488a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd478141fe3 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007fd4745206da in start_thread (arg=0x7fd435ffb700) at
pthread_create.c:456
#8 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 15 (Thread 0x7fd437fff700 (LWP 7126)):
#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1 0x00007fd478147a86 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd4781432b2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd4745206da in start_thread (arg=0x7fd437fff700) at
pthread_create.c:456
#5 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 14 (Thread 0x7fd43e0f3700 (LWP 7124)):
#0 0x00007fd472434ed9 in g_mutex_lock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007fd4723ef532 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd47836af2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd47831488a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd478141fe3 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007fd4745206da in start_thread (arg=0x7fd43e0f3700) at
pthread_create.c:456
#8 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 13 (Thread 0x7fd43f1aa700 (LWP 7122)):
#0 0x00007fd472434ef4 in g_mutex_unlock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007fd4723ef10a in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef5e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd4723ef902 in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fd440da2476 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5 0x00007fd472416f65 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007fd4745206da in start_thread (arg=0x7fd43f1aa700) at
pthread_create.c:456
#7 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 12 (Thread 0x7fd43f9ab700 (LWP 7121)):
#0 0x00007fd47773e18d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fd4723ef576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd4723ef6d1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fd472416f65 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007fd4745206da in start_thread (arg=0x7fd43f9ab700) at
pthread_create.c:456
#6 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 11 (Thread 0x7fd446696700 (LWP 7120)):
#0 0x00007fd47773e18d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fd4723ef576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd47836af2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd47831488a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd478141fe3 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd47b52c4c6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007fd4745206da in start_thread (arg=0x7fd446696700) at
pthread_create.c:456
#9 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 10 (Thread 0x7fd4470a0700 (LWP 7119)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd455cd09ab in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2 0x00007fd455cd06d7 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3 0x00007fd4745206da in start_thread (arg=0x7fd4470a0700) at
pthread_create.c:456
#4 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 9 (Thread 0x7fd4478a1700 (LWP 7118)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd455cd09ab in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2 0x00007fd455cd06d7 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3 0x00007fd4745206da in start_thread (arg=0x7fd4478a1700) at
pthread_create.c:456
#4 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 8 (Thread 0x7fd4480a2700 (LWP 7117)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd455cd09ab in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2 0x00007fd455cd06d7 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3 0x00007fd4745206da in start_thread (arg=0x7fd4480a2700) at
pthread_create.c:456
#4 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 7 (Thread 0x7fd4488a3700 (LWP 7116)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd455cd09ab in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2 0x00007fd455cd06d7 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3 0x00007fd4745206da in start_thread (arg=0x7fd4488a3700) at
pthread_create.c:456
#4 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 6 (Thread 0x7fd4490a4700 (LWP 7115)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd455cd09ab in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2 0x00007fd455cd06d7 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3 0x00007fd4745206da in start_thread (arg=0x7fd4490a4700) at
pthread_create.c:456
#4 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 5 (Thread 0x7fd457720700 (LWP 7114)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd455cd09ab in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2 0x00007fd455cd06d7 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3 0x00007fd4745206da in start_thread (arg=0x7fd457720700) at
pthread_create.c:456
#4 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 4 (Thread 0x7fd45f457700 (LWP 7112)):
#0 0x00007fd47773e18d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fd4723ef576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd47836af2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd47831488a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd478141fe3 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd478ccadf5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007fd4745206da in start_thread (arg=0x7fd45f457700) at
pthread_create.c:456
#9 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 3 (Thread 0x7fd460668700 (LWP 7111)):
#0 0x00007fd47773e18d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fd4723ef576 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd47836af2b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd47831488a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd478141fe3 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd47a44b5c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007fd4745206da in start_thread (arg=0x7fd460668700) at
pthread_create.c:456
#9 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 2 (Thread 0x7fd468ef2700 (LWP 7110)):
#0 0x00007fd47773e18d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fd471f84c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2 0x00007fd471f868d7 in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3 0x00007fd46b449ed9 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4 0x00007fd478146c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd4745206da in start_thread (arg=0x7fd468ef2700) at
pthread_create.c:456
#6 0x00007fd47774a17f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
Thread 1 (Thread 0x7fd47c1a98c0 (LWP 7109)):
[KCrash Handler]
#6 0x00007fd43e541014 in KNSCore::Engine::doRequest() () from
/usr/lib/x86_64-linux-gnu/libKF5NewStuffCore.so.5
#7 0x00007fd43e79998a in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/discover/kns-backend.so
#8 0x00007fd478343359 in QObject::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x00007fd47987f35c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fd479886b11 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fd4783168a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fd47831902d in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fd47836ab03 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fd4723ef377 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fd4723ef5e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fd4723ef68c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007fd47836af0f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fd47831488a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fd47831cffc in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x0000559c05e3f7ca in ?? ()
#21 0x00007fd4776623f1 in __libc_start_main (main=0x559c05e3ee80, argc=1,
argv=0x7fff73f4e708, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff73f4e6f8) at ../csu/libc-start.c:291
#22 0x0000559c05e3f8fa in _start ()
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