Bug 366773

Summary: plasmashell crashes every time I try to unlock widgets
Product: [Plasma] plasmashell Reporter: Gökhan Sarı <meisth0th>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bhush94, notmart, plasma-bugs
Priority: NOR    
Version: 5.7.3   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Gökhan Sarı 2016-08-15 05:01:28 UTC 
Application: plasmashell (5.7.3)

Qt Version: 5.7.0
Frameworks Version: 5.25.0
Operating System: Linux 4.7.0-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
Every time I try to unlock widgets (by right clicking the panel, using the menu icon at the top left, or right clicking desktop) plasmashell crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f915dc777c0 (LWP 30698))]

Thread 11 (Thread 0x7f907e880700 (LWP 30848)):
#0  0x00007f9156b7710f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f9157a62c2b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f915b9cc435 in ?? () from /usr/lib/libQt5Quick.so.5
#3  0x00007f915b9ccd2a in ?? () from /usr/lib/libQt5Quick.so.5
#4  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 10 (Thread 0x7f9089713700 (LWP 30833)):
#0  0x00007f9156b7710f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f9157a62c2b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f915b9cc435 in ?? () from /usr/lib/libQt5Quick.so.5
#3  0x00007f915b9ccd2a in ?? () from /usr/lib/libQt5Quick.so.5
#4  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 9 (Thread 0x7f90a0b3c700 (LWP 30790)):
#0  0x00007f9156b7710f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f9157a62c2b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f915b9cc435 in ?? () from /usr/lib/libQt5Quick.so.5
#3  0x00007f915b9ccd2a in ?? () from /usr/lib/libQt5Quick.so.5
#4  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 8 (Thread 0x7f90a3eef700 (LWP 30775)):
#0  0x00007f9156b7710f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f9157a62c2b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQt5Core.so.5
#2  0x00007f915b9cc435 in ?? () from /usr/lib/libQt5Quick.so.5
#3  0x00007f915b9ccd2a in ?? () from /usr/lib/libQt5Quick.so.5
#4  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 7 (Thread 0x7f90a46f0700 (LWP 30757)):
#0  0x00007f915736e48d in poll () from /usr/lib/libc.so.6
#1  0x00007f915261afd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f915261b0ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f9157c9059b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f9157c3a0da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f9157a5d0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007f915b95d8a6 in ?? () from /usr/lib/libQt5Quick.so.5
#7  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 6 (Thread 0x7f913ccea700 (LWP 30736)):
#0  0x00007f9156b7710f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f915d3edac4 in ?? () from /usr/lib/libQt5Script.so.5
#2  0x00007f915d3edb09 in ?? () from /usr/lib/libQt5Script.so.5
#3  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#4  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 5 (Thread 0x7f913e9ac700 (LWP 30711)):
#0  0x00007f915265f044 in g_mutex_unlock () from /usr/lib/libglib-2.0.so.0
#1  0x00007f915261ab6a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#2  0x00007f915261b040 in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007f915261b0ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0x00007f9157c9059b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f9157c3a0da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007f9157a5d0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#7  0x00007f915adbe445 in ?? () from /usr/lib/libQt5Qml.so.5
#8  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#9  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#10 0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 4 (Thread 0x7f913ffff700 (LWP 30710)):
#0  0x00007f915265f044 in g_mutex_unlock () from /usr/lib/libglib-2.0.so.0
#1  0x00007f915261ab6a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#2  0x00007f915261b040 in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007f915261b0ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0x00007f9157c9059b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f9157c3a0da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007f9157a5d0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#7  0x00007f915adbe445 in ?? () from /usr/lib/libQt5Qml.so.5
#8  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#9  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#10 0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7f9146165700 (LWP 30706)):
#0  0x00007f915736e48d in poll () from /usr/lib/libc.so.6
#1  0x00007f915261afd6 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f915261b0ec in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f9157c9059b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f9157c3a0da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f9157a5d0f3 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007f91587dde75 in ?? () from /usr/lib/libQt5DBus.so.5
#7  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f91481b7700 (LWP 30700)):
#0  0x00007f915736e48d in poll () from /usr/lib/libc.so.6
#1  0x00007f915c32d8e0 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f915c32f679 in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007f914a527469 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f9157a61d78 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f9156b71454 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f91573777df in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f915dc777c0 (LWP 30698)):
[KCrash Handler]
#5  0x00007f906aac3b74 in ?? () from /usr/lib/libQtGui.so.4
#6  0x00007f915db6a4fa in call_init.part () from /lib64/ld-linux-x86-64.so.2
#7  0x00007f915db6a60b in _dl_init () from /lib64/ld-linux-x86-64.so.2
#8  0x00007f915db6eb38 in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
#9  0x00007f915db6a3a4 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#10 0x00007f915db6e2d9 in _dl_open () from /lib64/ld-linux-x86-64.so.2
#11 0x00007f915651cee9 in ?? () from /usr/lib/libdl.so.2
#12 0x00007f915db6a3a4 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#13 0x00007f915651d521 in ?? () from /usr/lib/libdl.so.2
#14 0x00007f915651cf82 in dlopen () from /usr/lib/libdl.so.2
#15 0x00007f907d7adb90 in ?? () from /usr/lib/libvlccore.so.8
#16 0x00007f907d791eeb in ?? () from /usr/lib/libvlccore.so.8
#17 0x00007f907d792218 in ?? () from /usr/lib/libvlccore.so.8
#18 0x00007f907d792174 in ?? () from /usr/lib/libvlccore.so.8
#19 0x00007f907d7926f4 in ?? () from /usr/lib/libvlccore.so.8
#20 0x00007f907d792cfa in ?? () from /usr/lib/libvlccore.so.8
#21 0x00007f907d718e91 in libvlc_InternalInit () from /usr/lib/libvlccore.so.8
#22 0x00007f907d4e9d0e in libvlc_new () from /usr/lib/libvlc.so.5
#23 0x00007f907da742c8 in ?? () from /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#24 0x00007f907da49586 in ?? () from /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#25 0x00007f907da78195 in qt_plugin_instance () from /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#26 0x00007f9157c24b7b in QPluginLoader::instance() () from /usr/lib/libQt5Core.so.5
#27 0x00007f91514cb180 in ?? () from /usr/lib/libphonon4qt5.so.4
#28 0x00007f91514cdada in ?? () from /usr/lib/libphonon4qt5.so.4
#29 0x00007f91514ce179 in ?? () from /usr/lib/libphonon4qt5.so.4
#30 0x00007f91514ceaa4 in Phonon::Factory::backend(bool) () from /usr/lib/libphonon4qt5.so.4
#31 0x00007f91514cf339 in ?? () from /usr/lib/libphonon4qt5.so.4
#32 0x00007f91514c3031 in ?? () from /usr/lib/libphonon4qt5.so.4
#33 0x00007f9155cb0e10 in ?? () from /usr/lib/libKF5Notifications.so.5
#34 0x00007f9155c90040 in ?? () from /usr/lib/libKF5Notifications.so.5
#35 0x00007f9155c8c310 in KNotification::sendEvent() () from /usr/lib/libKF5Notifications.so.5
#36 0x00007f90a53f9ef9 in ?? () from /usr/lib/qt/qml/org/kde/private/desktopcontainment/desktop/libdesktopplugin.so
#37 0x00007f90a53fa77d in ?? () from /usr/lib/qt/qml/org/kde/private/desktopcontainment/desktop/libdesktopplugin.so
#38 0x00007f90a53fab70 in ?? () from /usr/lib/qt/qml/org/kde/private/desktopcontainment/desktop/libdesktopplugin.so
#39 0x00007f915ad76c09 in ?? () from /usr/lib/libQt5Qml.so.5
#40 0x00007f915ad043fe in ?? () from /usr/lib/libQt5Qml.so.5
#41 0x00007f915ad05779 in ?? () from /usr/lib/libQt5Qml.so.5
#42 0x00007f915ad064ad in QV4::QObjectMethod::callInternal(QV4::CallData*) const () from /usr/lib/libQt5Qml.so.5
#43 0x00007f915ad1b8a0 in QV4::Runtime::callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () from /usr/lib/libQt5Qml.so.5
#44 0x00007f91316b061a in ?? ()
#45 0x00007f913d9ad3e0 in ?? ()
#46 0xaa40b49334f96500 in ?? ()
#47 0x0000000000000000 in ?? ()


Report to https://bugs.kde.org/

Reproducible: Always

Steps to Reproduce:
1. Right click the panel
2. Select "Unlock Widgets"
3. Watch plasmashell crash

Actual Results:  
Plasmashell crashes

Expected Results:  
Widgets' getting unlocked to be modifiable.
Comment 1 Marco Martin 2016-08-16 12:25:07 UTC 
needs reproduced with debug packages
Comment 2 Christoph Feck 2016-10-24 03:51:47 UTC 

*** This bug has been marked as a duplicate of bug 335111 ***