Bug 231604

Summary:	Lancelot crashed while not in use
Product:	[Unmaintained] plasma4	Reporter:	Sam Azer <sam>
Component:	widget-lancelot	Assignee:	Ivan Čukić <ivan.cukic>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	andresbajotierra
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Sam Azer 2010-03-22 00:12:29 UTC

Application: lancelot (1.8)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.31-20-generic x86_64
Distribution: Ubuntu 9.10

-- Information about the crash:
* closed some terminals in desktop / activity #8.

* switched to desktop / acitivty #1

* closed kontact by clicking on the close button in the top-right corner of the window (took a long time to close.)

* While kontact was closing closed Mozilla Thunderbird (being used due to an HTML bug in kmail composer.) Used the File->Exit method to instruct Thunderbird to close while kontact was closing.

* Desktop appears to crash (ie: taskbar disappears.)

* Crash Reporting Assistant reports that Lancelot crashed.

* Taskbar restarts & appears on-screen.

* Filing this crash report / did not try anything else.

Thanks,
Sam.



 -- Backtrace:
Application: Lancelot (lancelot), signal: Bus error
[Current thread is 1 (Thread 0x7fa3f75f4810 (LWP 2890))]

Thread 9 (Thread 0x7fa3d24bc910 (LWP 25357)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x2d17140) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x2d17140) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3d24bbf90, parent=0x2b9d140, th=0x2d17140) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x2d17140) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x2d17140) at thread/qthread_unix.cpp:248
#8  0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7fa3d1cbb910 (LWP 25358)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x2cf19a0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x2cf19a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3d1cbaf90, parent=0x2b9d140, th=0x2cf19a0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x2cf19a0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x2cf19a0) at thread/qthread_unix.cpp:248
#8  0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()
The current source language is "auto; currently asm".

Thread 7 (Thread 0x7fa3cbfff910 (LWP 25359)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x7fa3d400d8f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x7fa3d400d8f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3cbffef90, parent=0x2b9d140, th=0x7fa3d400d8f0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x7fa3d400d8f0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x7fa3d400d8f0) at thread/qthread_unix.cpp:248
#8  0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fa3d14ba910 (LWP 25360)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x3095910) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x3095910) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3d14b9f90, parent=0x2b9d140, th=0x3095910) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x3095910) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x3095910) at thread/qthread_unix.cpp:248
#8  0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fa3d0cb9910 (LWP 25361)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x2a71560) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x2a71560) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3d0cb8f90, parent=0x2b9d140, th=0x2a71560) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x2a71560) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x2a71560) at thread/qthread_unix.cpp:248
#8  0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fa3cb7fe910 (LWP 25362)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x7fa3cc004110) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x7fa3cc004110) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0789764 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x7fa3cc004110) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007fa3f0789764 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x7fa3cc004110) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3cb7fdf90, parent=0x2b9d140, th=0x7fa3cc004110) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x7fa3cc004110) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x7fa3cc004110) at thread/qthread_unix.cpp:248
#10 0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#11 0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fa3caffd910 (LWP 25363)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x7fa3cc004a90) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x7fa3cc004a90) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3caffcf90, parent=0x2b9d140, th=0x7fa3cc004a90) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x7fa3cc004a90) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x7fa3cc004a90) at thread/qthread_unix.cpp:248
#8  0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa3ca7fc910 (LWP 25364)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa3f4a7372b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x29e8360, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3f0787096 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2b9d140, th=0x7fa3d4004a60) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa3f078974b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2b9fd00, th=0x7fa3d4004a60) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa3f0787bff in ThreadWeaver::ThreadRunHelper::run (this=0x7fa3ca7fbf90, parent=0x2b9d140, th=0x7fa3d4004a60) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa3f0788058 in ThreadWeaver::Thread::run (this=0x7fa3d4004a60) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa3f4a72775 in QThreadPrivate::start (arg=0x7fa3d4004a60) at thread/qthread_unix.cpp:248
#8  0x00007fa3f2468a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#9  0x00007fa3f37c380d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa3f75f4810 (LWP 2890)):
[KCrash Handler]
#5  0x00007fa3f5851780 in KPixmapCache::Private::mmapFile (this=0x2798460, filename=..., info=0x27984c8, newsize=126341120) at ../../kdeui/util/kpixmapcache.cpp:491
#6  0x00007fa3f58530b8 in KPixmapCache::Private::mmapFiles (this=0x2798460) at ../../kdeui/util/kpixmapcache.cpp:424
#7  0x00007fa3f5852ea3 in KPixmapCache::Private::init (this=0x2798460) at ../../kdeui/util/kpixmapcache.cpp:1061
#8  0x00007fa3f585491d in KPixmapCache::discard (this=0x2616f90) at ../../kdeui/util/kpixmapcache.cpp:1279
#9  0x00007fa3f5855008 in KPixmapCache::deleteCache (name=...) at ../../kdeui/util/kpixmapcache.cpp:1255
#10 0x00007fa3f6c2b20d in Plasma::ThemePrivate::discardCache (this=0x2658cd0) at ../../plasma/theme.cpp:221
#11 0x00007fa3f6c2b66d in Plasma::ThemePrivate::compositingChanged (this=0x2658cd0) at ../../plasma/theme.cpp:213
#12 0x00007fa3f6c313a2 in Plasma::Theme::qt_metacall (this=0x266deb0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff7a5b4060) at ./theme.moc:108
#13 0x00007fa3f4b79c0f in QMetaObject::activate (sender=0x2644580, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3293
#14 0x00007fa3f584b57d in KSelectionWatcher::Private::x11Event (this=<value optimized out>, ev_P=0x0) at ../../kdeui/util/kmanagerselection.cpp:395
#15 0x00007fa3f57d1556 in KAppX11HackWidget::publicx11Event (this=<value optimized out>, _event=0x7fff7a5b4730) at ../../kdeui/kernel/kapplication.cpp:903
#16 KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff7a5b4730) at ../../kdeui/kernel/kapplication.cpp:953
#17 0x00007fa3f3f963b1 in qt_x11EventFilter (ev=0x7fff7a5b4730) at kernel/qapplication_x11.cpp:399
#18 0x00007fa3f3fa4ec1 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff7a5b4730) at kernel/qapplication_x11.cpp:3231
#19 0x00007fa3f3fd1322 in x11EventSourceDispatch (s=0x2528e30, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#20 0x00007fa3ed925bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#21 0x00007fa3ed929598 in ?? () from /lib/libglib-2.0.so.0
#22 0x00007fa3ed9296c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#23 0x00007fa3f4b90333 in QEventDispatcherGlib::processEvents (this=0x24e5f10, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#24 0x00007fa3f3fd0f0e in QGuiEventDispatcherGlib::processEvents (this=0x2fb0e00, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#25 0x00007fa3f4b65732 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#26 0x00007fa3f4b65b0c in QEventLoop::exec (this=0x7fff7a5b4a60, flags=) at kernel/qeventloop.cpp:201
#27 0x00007fa3f4b6984b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#28 0x000000000043d775 in _start ()
The current source language is "auto; currently c".

This bug may be a duplicate of or related to bug 182026.

Possible duplicates by query: bug 231579, bug 231520, bug 231515, bug 231414, bug 231249.

Reported using DrKonqi

Comment 1 Dario Andres 2010-03-22 00:34:27 UTC

Root cause fixed for KDE SC 4.4.2 and later. Regards

*** This bug has been marked as a duplicate of bug 182026 ***