[kde] [Bug 414728] New: Systemsettings module crashed when deleting empty entries

Alex bugzilla_noreply at kde.org
Sun Dec 1 20:20:46 GMT 2019 

https://bugs.kde.org/show_bug.cgi?id=414728

            Bug ID: 414728
           Summary: Systemsettings module crashed when deleting empty
                    entries
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: alex1701c.dev at gmx.net
  Target Milestone: ---

Application: kcmshell5 (5.16.5)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-23-generic x86_64
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed:
A couple of months ago I deletes some of the existing web shortcuts because I
will never use them.
Scince then there are a lot of empty entries.  If I delete them or any other
entry the app crashes when I click Ok/Apply.

- Custom settings of the application:
Some of the default entries have been deleted and shortcuts for existing
entries have been added.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings Module (kcmshell5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8541e5b840 (LWP 4106))]

Thread 4 (Thread 0x7f8539096700 (LWP 4109)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x5564268982c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x556426898278,
cond=0x5564268982a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5564268982a0, mutex=0x556426898278) at
pthread_cond_wait.c:638
#3  0x00007f853975d97b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f853975d59b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f8545107669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6  0x00007f85477de323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f853be44700 (LWP 4108)):
#0  __GI___libc_read (nbytes=16, buf=0x7f853be43b20, fd=7) at
../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=7, buf=0x7f853be43b20, nbytes=16) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f854462463f in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f85445dc58e in g_main_context_check () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f85445dc9e2 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f85445dcb73 in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f85462986c3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f854623f63b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8546078a75 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f854723eefa in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f8546079cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8545107669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#12 0x00007f85477de323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8540f8c700 (LWP 4107)):
#0  0x00007f85477d1c2f in __GI___poll (fds=0x7f8540f8bc68, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8544de8917 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8544dea53a in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f854173d288 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8546079cc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8545107669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6  0x00007f85477de323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8541e5b840 (LWP 4106)):
[KCrash Handler]
#6  0x0000000000000041 in ?? ()
#7  0x00007f853a9ef0de in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/urifilters/kurisearchfilter.so
#8  0x00007f853a9f27af in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/urifilters/kurisearchfilter.so
#9  0x00007f8541862b1e in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_webshortcuts.so
#10 0x00007f8541862b6d in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_webshortcuts.so
#11 0x00007f854768a328 in KCModuleProxy::deleteClient() () from
/usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#12 0x00007f854768a3e1 in KCModuleProxy::~KCModuleProxy() () from
/usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#13 0x00007f854768a57d in KCModuleProxy::~KCModuleProxy() () from
/usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#14 0x00007f854626a17e in QObjectPrivate::deleteChildren() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f8546c90919 in QWidget::~QWidget() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f8546c90b0d in QWidget::~QWidget() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f854626a17e in QObjectPrivate::deleteChildren() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f8546c90919 in QWidget::~QWidget() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f8547689c01 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#20 0x00007f854626a17e in QObjectPrivate::deleteChildren() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f8546c90919 in QWidget::~QWidget() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f85474ee1e1 in ?? () from
/usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#23 0x00007f854626a17e in QObjectPrivate::deleteChildren() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f8546c90919 in QWidget::~QWidget() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f85474d70dd in KPageWidget::~KPageWidget() () from
/usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#26 0x00007f854626a17e in QObjectPrivate::deleteChildren() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f8546c90919 in QWidget::~QWidget() () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f85478bad01 in ?? () from
/usr/lib/x86_64-linux-gnu/libkdeinit5_kcmshell5.so
#29 0x00007f854626ccd4 in QObject::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f8546c94ff8 in QWidget::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f8546c52a86 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007f8546c5be00 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f8546240a9a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f8546243718 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f85462990a7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f85445dc84d in g_main_context_dispatch () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f85445dcad0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f85445dcb73 in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f85462986a5 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f854623f63b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f85462473a6 in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f85478b7331 in kdemain () from
/usr/lib/x86_64-linux-gnu/libkdeinit5_kcmshell5.so
#43 0x00007f85476e31e3 in __libc_start_main (main=0x556424be9060, argc=2,
argv=0x7fff4623f648, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff4623f638) at ../csu/libc-start.c:308
#44 0x0000556424be909e in _start ()
[Inferior 1 (process 4106) detached]

Possible duplicates by query: bug 351087, bug 351042, bug 350644, bug 350508,
bug 349430.

Reported using DrKonqi

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