Bug 354926

Summary: Strange behaviour followed by a plasma/kde crash
Product: [I don't know] kde Reporter: hassoon <ghanmi.hassen91>
Component: generalAssignee: Unassigned bugs <unassigned-bugs-null>
Status: RESOLVED DOWNSTREAM    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description hassoon 2015-11-06 00:48:35 UTC 
Application: plasma-desktop (4.11.13)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.16.0-4-amd64 x86_64
Distribution: Debian GNU/Linux 8.2 (jessie)

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

I have a lower main panel, and another secondary vertical left-sided automatically-hidden panel.

The latter contains a pager, the yaWP weather widget and yet the system monitor widget.

- Unusual behavior I noticed:

The said vertical left-sided auto-hidden panel became always visible even and overlaying the windows under it, then the desktop environment crashed

The crash does not seem to be reproducible.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1108870800 (LWP 19653))]

Thread 11 (Thread 0x7f10dc393700 (LWP 19654)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1101281dea in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f1101281e19 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f10fbaaf0a4 in start_thread (arg=0x7f10dc393700) at pthread_create.c:309
#4  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (Thread 0x7f1059b33700 (LWP 19657)):
#0  0x00007f10fb1d03f4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f10fb18b450 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f10fb18be0b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f10fb18bffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1104c36d37 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f1104c06271 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f1104c065d5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f1104afae99 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f1104be6ac3 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f10fbaaf0a4 in start_thread (arg=0x7f1059b33700) at pthread_create.c:309
#11 0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7f1059332700 (LWP 19950)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e475c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f10fbaaf0a4 in start_thread (arg=0x7f1059332700) at pthread_create.c:309
#8  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7f103d51e700 (LWP 19951)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#5  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f10fbaaf0a4 in start_thread (arg=0x7f103d51e700) at pthread_create.c:309
#7  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7f103cd1d700 (LWP 19952)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e475c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f11004e475c in ?? () from /usr/lib/libthreadweaver.so.4
#6  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#7  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f10fbaaf0a4 in start_thread (arg=0x7f103cd1d700) at pthread_create.c:309
#9  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f102ffff700 (LWP 19953)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#5  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f10fbaaf0a4 in start_thread (arg=0x7f102ffff700) at pthread_create.c:309
#7  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f102f7fe700 (LWP 19956)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#5  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f10fbaaf0a4 in start_thread (arg=0x7f102f7fe700) at pthread_create.c:309
#7  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f102e5b1700 (LWP 19958)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#5  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f10fbaaf0a4 in start_thread (arg=0x7f102e5b1700) at pthread_create.c:309
#7  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f102ddb0700 (LWP 19959)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e475c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f10fbaaf0a4 in start_thread (arg=0x7f102ddb0700) at pthread_create.c:309
#8  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f102d5af700 (LWP 19960)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1104afdc66 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f11004e186c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f11004e4743 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f11004e475c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f11004e322f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f1104afd70f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f10fbaaf0a4 in start_thread (arg=0x7f102d5af700) at pthread_create.c:309
#8  0x00007f110817b04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f1108870800 (LWP 19653)):
[KCrash Handler]
#6  0x00007f1107c8b5f0 in Plasma::DataContainer::checkForUpdate() () from /usr/lib/libplasma.so.3
#7  0x00007f1107c8d7db in Plasma::DataEngine::timerEvent(QTimerEvent*) () from /usr/lib/libplasma.so.3
#8  0x00007f1104c20ce3 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f1103f5848c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#10 0x00007f1103f5efa8 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#11 0x00007f110592b1aa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#12 0x00007f1104c0771d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#13 0x00007f1104c3938b in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#14 0x00007f1104c363f9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007f10fb18bc5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f10fb18bf48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f10fb18bffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f1104c36d1d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#19 0x00007f1103ffcf96 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#20 0x00007f1104c06271 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#21 0x00007f1104c065d5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#22 0x00007f110442de7c in QDialog::exec() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#23 0x00007f10de9037c3 in YawpConfigDialog::addCity (this=0x67af5c0) at /tmp/buildd/plasma-widget-yawp-0.4.2/applet/configdialog/yawpconfig.cpp:606
#24 0x00007f10de901614 in YawpConfigDialog::qt_metacall (this=0x67af5c0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7ffe6ecdecd0) at /tmp/buildd/plasma-widget-yawp-0.4.2/obj-x86_64-linux-gnu/applet/moc_yawpconfig.cpp:110
#25 0x00007f1104c1cabb in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#26 0x00007f11045eab92 in QAbstractButton::clicked(bool) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#27 0x00007f1104329743 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#28 0x00007f110432aaf4 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#29 0x00007f110432ac04 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#30 0x00007f1103fab748 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#31 0x00007f1103f5848c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#32 0x00007f1103f5f10f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#33 0x00007f110592b1aa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#34 0x00007f1104c0771d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#35 0x00007f1103f5e76f in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#36 0x00007f1103fd5432 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#37 0x00007f1103fd3e2c in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#38 0x00007f1103ffced2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#39 0x00007f10fb18bc5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f10fb18bf48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f10fb18bffc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007f1104c36d1d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#43 0x00007f1103ffcf96 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#44 0x00007f1104c06271 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#45 0x00007f1104c065d5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#46 0x00007f1104c0c059 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#47 0x00007f110847e4bd in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#48 0x00007f11080b6b45 in __libc_start_main (main=0x4006f0, argc=1, argv=0x7ffe6ecdfbc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe6ecdfbb8) at libc-start.c:287
#49 0x000000000040071e in _start ()

Reported using DrKonqi
Comment 1 Christoph Feck 2015-11-06 01:31:26 UTC 
Here, YawpConfigDialog::addCity spawns a local event loop, which causes the issue. Please report this directly to yaWP authors.