Bug 383464

Summary: Discover crashed when I searched for "Dropbox" and then clicked on "Application Addons"
Product: [Applications] Discover Reporter: Nate Graham <nate>
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED DUPLICATE    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: 5.9.4   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Nate Graham 2017-08-13 18:06:25 UTC 
Application: plasma-discover (5.9.4)

Qt Version: 5.7.1
Frameworks Version: 5.31.0
Operating System: Linux 4.10.0-32-generic x86_64
Distribution: Ubuntu 17.04

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

I searched for Dropbox, scrolled in the list for a bit, then clicked on "Application Addons." Discover crashed as soon as some entries appeared oin the list.

The crash does not seem to be reproducible.

-- 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 0x7f4beccea8c0 (LWP 8763))]

Thread 11 (Thread 0x7f4b6b7fe700 (LWP 8865)):
#0  0x00007f4be8290d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4be2f43576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be8ebc0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4be8c93f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4be50746da in start_thread (arg=0x7f4b6b7fe700) at pthread_create.c:456
#8  0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f4baa7fc700 (LWP 8864)):
#0  0x00007f4be2f88ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4be2f42d99 in g_main_context_query () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f434e8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4be8ebc0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4be8c93f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4be50746da in start_thread (arg=0x7f4baa7fc700) at pthread_create.c:456
#9  0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f4b48efc700 (LWP 8798)):
#0  0x00007f4be8290d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4be2f43576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f43902 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4b8852e476 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f4be2f6af65 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4be50746da in start_thread (arg=0x7f4b48efc700) at pthread_create.c:456
#6  0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f4b496fd700 (LWP 8797)):
#0  0x00007f4be828c8ad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4be2f87b30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f43042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be2f43514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4be2f436d1 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4be2f6af65 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f4be50746da in start_thread (arg=0x7f4b496fd700) at pthread_create.c:456
#8  0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f4baaffd700 (LWP 8774)):
#0  0x00007f4be8290d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4be2f43576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be8ebc0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4be8c93f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4be50746da in start_thread (arg=0x7f4baaffd700) at pthread_create.c:456
#8  0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f4bbae63700 (LWP 8769)):
#0  0x00007f4be828c8ad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4be2f87b30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f43042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be2f43514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4be8ebc0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4be8c93f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4be50746da in start_thread (arg=0x7f4bbae63700) at pthread_create.c:456
#10 0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f4bc9fe1700 (LWP 8768)):
#0  0x00007f4be2f88ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4be2f424be in g_main_context_acquire () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f43425 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4be8ebc0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4be8c93f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4bec06d4c6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4be50746da in start_thread (arg=0x7f4bc9fe1700) at pthread_create.c:456
#10 0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f4bcbfff700 (LWP 8766)):
#0  0x00007f4be2f40557 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4be2f42a0b in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f4349b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4be8ebc0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4be8c93f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4be981cdf5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4be50746da in start_thread (arg=0x7f4bcbfff700) at pthread_create.c:456
#10 0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f4bd1294700 (LWP 8765)):
#0  0x00007f4be8290d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4be2f43576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4be8ebc0bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4be8c93f83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4beaaef5d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4be50746da in start_thread (arg=0x7f4bd1294700) at pthread_create.c:456
#9  0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f4bd9a48700 (LWP 8764)):
#0  0x00007f4be8290d8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4be2ad8c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4be2ada8d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4bdbf9fef9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f4be8c98c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4be50746da in start_thread (arg=0x7f4bd9a48700) at pthread_create.c:456
#6  0x00007f4be829cd7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f4beccea8c0 (LWP 8763)):
[KCrash Handler]
#6  0x00007f4be8e67b81 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4bec0ee469 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f4bec0f7357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f4bec0f76e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f4bea3d035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f4bea3d7b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f4be8e67c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f4bec0ee469 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f4bec0f7357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f4bec0f76e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f4bea3d035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f4bea3d7b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f4be8e67c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f4bec0ee469 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f4bec0f7357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f4bec0f76e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f4bea3d035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f4bea3d7b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f4be8e67c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f4bec0ee469 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f4bec0f7357 in QQuickItemPrivate::deliverKeyEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f4bec0f76e1 in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007f4bea3d035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f4bea3d7b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f4be8e67c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f4bec10a143 in QQuickWindow::sendEvent(QQuickItem*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#32 0x00007f4bec10a58f in QQuickWindow::keyReleaseEvent(QKeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#33 0x00007f4be9c49415 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#34 0x00007f4bec112245 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f4bea3d035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f4bea3d7b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f4be8e67c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f4be9c39d48 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#39 0x00007f4be9c3f275 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#40 0x00007f4be9c1d22b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f4bdbfd66d0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#42 0x00007f4be2f43377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f4be2f435e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f4be2f4368c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f4be8ebc09f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007f4be8e65bea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f4be8e6e33c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x000056274011ab16 in  ()
#49 0x00007f4be81b43f1 in __libc_start_main (main=0x56274011a410, argc=1, argv=0x7fff25a8a158, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff25a8a148) at ../csu/libc-start.c:291
#50 0x000056274011ad5a in _start ()

Reported using DrKonqi
Comment 1 Nate Graham 2017-08-14 19:52:23 UTC 
Not seen in 5.10.x.
Comment 2 Aleix Pol 2017-09-04 15:16:53 UTC 

*** This bug has been marked as a duplicate of bug 378339 ***