Bug 335305

Application: kontact (4.13.1)
KDE Platform Version: 4.13.1
Qt Version: 4.8.6
Operating System: Linux 3.13.0-24-generic x86_64
Distribution: Ubuntu 14.04 LTS

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

The KDE desktop has suddenly crashed (KDE 4.13.1, Kubuntu 14.04), while working with Firefox and Digikam running in background.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd254e56800 (LWP 2870))]

Thread 7 (Thread 0x7fd23472a700 (LWP 2872)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd24fbfd81d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fd24fbfd859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fd24c31f182 in start_thread (arg=0x7fd23472a700) at pthread_create.c:312
#4  0x00007fd2523d130d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7fd1f3e0f700 (LWP 2877)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd24f93e20d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fd24fc2cfd6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fd24c31f182 in start_thread (arg=0x7fd1f3e0f700) at pthread_create.c:312
#4  0x00007fd2523d130d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fd1df71e700 (LWP 2909)):
#0  0x00007fd2523c3fbd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd24be3ffe4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fd1d8003090, timeout=3962, context=0x7fd1d80009a0) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:4028
#2  g_main_context_iterate (context=context@entry=0x7fd1d80009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3729
#3  0x00007fd24be400ec in g_main_context_iteration (context=0x7fd1d80009a0, may_block=1) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3795
#4  0x00007fd252b4a7be in QEventDispatcherGlib::processEvents (this=0x7fd1d80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007fd252b1c0af in QEventLoop::processEvents (this=this@entry=0x7fd1df71dde0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fd252b1c3a5 in QEventLoop::exec (this=this@entry=0x7fd1df71dde0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007fd252a18c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#8  0x00007fd252a1b32f in QThreadPrivate::start (arg=0x27bff50) at thread/qthread_unix.cpp:349
#9  0x00007fd24c31f182 in start_thread (arg=0x7fd1df71e700) at pthread_create.c:312
#10 0x00007fd2523d130d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fd1dc855700 (LWP 3128)):
#0  0x00007ffff77fea1f in ?? ()
#1  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fd1cbfff700 (LWP 14248)):
#0  0x00007fd2523c26bd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd24be80c20 in read (__nbytes=16, __buf=0x7fd1cbffeba0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fd1cc000900) at /build/buildd/glib2.0-2.40.0/./glib/gwakeup.c:210
#3  0x00007fd24be3fb14 in g_main_context_check (context=context@entry=0x7fd1cc006ce0, max_priority=2147483647, fds=fds@entry=0x7fd1cc002f70, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3532
#4  0x00007fd24be3ff7b in g_main_context_iterate (context=context@entry=0x7fd1cc006ce0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3731
#5  0x00007fd24be400ec in g_main_context_iteration (context=0x7fd1cc006ce0, may_block=1) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3795
#6  0x00007fd252b4a7be in QEventDispatcherGlib::processEvents (this=0x7fd1cc005fc0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007fd252b1c0af in QEventLoop::processEvents (this=this@entry=0x7fd1cbffeda0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fd252b1c3a5 in QEventLoop::exec (this=this@entry=0x7fd1cbffeda0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fd252a18c5f in QThread::exec (this=this@entry=0xa7acba0) at thread/qthread.cpp:537
#10 0x00007fd252afd823 in QInotifyFileSystemWatcherEngine::run (this=0xa7acba0) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007fd252a1b32f in QThreadPrivate::start (arg=0xa7acba0) at thread/qthread_unix.cpp:349
#12 0x00007fd24c31f182 in start_thread (arg=0x7fd1cbfff700) at pthread_create.c:312
#13 0x00007fd2523d130d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fd1d4956700 (LWP 21901)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007fd252a1b7f4 in wait (time=30000, this=0xbb53a00) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=this@entry=0x281d280, mutex=mutex@entry=0xa94b9b8, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fd252a0f0fa in QThreadPoolThread::run (this=0x281d270) at concurrent/qthreadpool.cpp:142
#4  0x00007fd252a1b32f in QThreadPrivate::start (arg=0x281d270) at thread/qthread_unix.cpp:349
#5  0x00007fd24c31f182 in start_thread (arg=0x7fd1d4956700) at pthread_create.c:312
#6  0x00007fd2523d130d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fd254e56800 (LWP 2870)):
[KCrash Handler]
#6  0x000000000ba9c7b0 in ?? ()
#7  0x00007fd1c21e4440 in Akregator::Folder::updateUnreadCount (this=this@entry=0x16258570) at ../../../akregator/src/folder.cpp:313
#8  0x00007fd1c21e493f in Akregator::Folder::removeChild (this=0x16258570, node=node@entry=0x1732cd80) at ../../../akregator/src/folder.cpp:258
#9  0x00007fd1c21dc7f5 in Akregator::TreeNode::emitSignalDestroyed (this=this@entry=0x1732cd80) at ../../../akregator/src/treenode.cpp:74
#10 0x00007fd1c21d4c79 in Akregator::Feed::~Feed (this=0x1732cd80, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../akregator/src/feed.cpp:320
#11 0x00007fd1c21d4ec9 in Akregator::Feed::~Feed (this=0x1732cd80, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../akregator/src/feed.cpp:323
#12 0x00007fd1c21e33a6 in Akregator::Folder::FolderPrivate::~FolderPrivate (this=0x562c2b0, __in_chrg=<optimized out>) at ../../../akregator/src/folder.cpp:70
#13 0x00007fd1c21e3408 in Akregator::Folder::~Folder (this=0x16258570, __in_chrg=<optimized out>) at ../../../akregator/src/folder.cpp:98
#14 0x00007fd1c21e3449 in Akregator::Folder::~Folder (this=0x16258570, __in_chrg=<optimized out>) at ../../../akregator/src/folder.cpp:100
#15 0x00007fd1c21e33a6 in Akregator::Folder::FolderPrivate::~FolderPrivate (this=0x149ab120, __in_chrg=<optimized out>) at ../../../akregator/src/folder.cpp:70
#16 0x00007fd1c21e3408 in Akregator::Folder::~Folder (this=0x16142fa0, __in_chrg=<optimized out>) at ../../../akregator/src/folder.cpp:98
#17 0x00007fd1c21e3449 in Akregator::Folder::~Folder (this=0x16142fa0, __in_chrg=<optimized out>) at ../../../akregator/src/folder.cpp:100
#18 0x00007fd1c21d6bd8 in Akregator::FeedList::setRootNode (this=this@entry=0x4211480, folder=folder@entry=0x0) at ../../../akregator/src/feedlist.cpp:435
#19 0x00007fd1c21d7287 in Akregator::FeedList::~FeedList (this=0x4211480, __in_chrg=<optimized out>) at ../../../akregator/src/feedlist.cpp:315
#20 0x00007fd1c21d7369 in Akregator::FeedList::~FeedList (this=0x4211480, __in_chrg=<optimized out>) at ../../../akregator/src/feedlist.cpp:319
#21 0x00007fd1c21f38a2 in release (this=0x1290df30) at /usr/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp:146
#22 ~shared_count (this=0x158bbc10, __in_chrg=<optimized out>) at /usr/include/boost/smart_ptr/detail/shared_count.hpp:371
#23 ~shared_ptr (this=0x158bbc08, __in_chrg=<optimized out>) at /usr/include/boost/smart_ptr/shared_ptr.hpp:328
#24 ~ArticleDeleteJob (this=0x158bbbf0, __in_chrg=<optimized out>) at ../../../akregator/src/articlejobs.h:67
#25 Akregator::ArticleDeleteJob::~ArticleDeleteJob (this=0x158bbbf0, __in_chrg=<optimized out>) at ../../../akregator/src/articlejobs.h:67
#26 0x00007fd252b34168 in QObjectPrivate::deleteChildren (this=this@entry=0x14f5bbd0) at kernel/qobject.cpp:1907
#27 0x00007fd252b366ff in QObject::~QObject (this=0x157fba90, __in_chrg=<optimized out>) at kernel/qobject.cpp:926
#28 0x00007fd1c809a859 in Akregator::ExpireItemsCommand::~ExpireItemsCommand (this=0x157fba90, __in_chrg=<optimized out>) at ../../../akregator/src/expireitemscommand.cpp:110
#29 0x00007fd252b34168 in QObjectPrivate::deleteChildren (this=this@entry=0x15b6ba70) at kernel/qobject.cpp:1907
#30 0x00007fd25355bd37 in QWidget::~QWidget (this=0x3eba030, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#31 0x00007fd1c80c00b9 in Akregator::MainWidget::~MainWidget (this=0x3eba030, __in_chrg=<optimized out>) at ../../../akregator/src/mainwidget.cpp:101
#32 0x00007fd2520a8136 in KParts::Part::~Part (this=0x88f71f0, __vtt_parm=0x7fd1c830a7d0 <VTT for Akregator::Part+16>, __in_chrg=<optimized out>) at ../../kparts/part.cpp:209
#33 0x00007fd1c80bc5b7 in Akregator::Part::~Part (this=this@entry=0x88f71f0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../akregator/src/akregator_part.cpp:414
#34 0x00007fd1c80bc729 in Akregator::Part::~Part (this=0x88f71f0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../akregator/src/akregator_part.cpp:421
#35 0x00007fd254a95d2e in KontactInterface::Plugin::~Plugin (this=0x29a7750, __vtt_parm=<optimized out>, __in_chrg=<optimized out>) at ../../kontactinterface/plugin.cpp:92
#36 0x00007fd1ea090b26 in AkregatorPlugin::~AkregatorPlugin (this=0x29a7750, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../../kontact/plugins/akregator/akregator_plugin.cpp:61
#37 0x00007fd1ea090b49 in AkregatorPlugin::~AkregatorPlugin (this=0x29a7750, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../../kontact/plugins/akregator/akregator_plugin.cpp:65
#38 0x00007fd25465cf8e in Kontact::MainWindow::~MainWindow (this=this@entry=0x26918e0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../kontact/src/mainwindow.cpp:296
#39 0x00007fd25465d0e9 in Kontact::MainWindow::~MainWindow (this=0x26918e0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../kontact/src/mainwindow.cpp:298
#40 0x00000000004036a6 in qDeleteAll<QList<KMainWindow*>::const_iterator> (end=..., begin=...) at /usr/include/qt4/QtCore/qalgorithms.h:322
#41 qDeleteAll<QList<KMainWindow*> > (c=...) at /usr/include/qt4/QtCore/qalgorithms.h:330
#42 main (argc=1, argv=0x7ffff76e7108) at ../../../kontact/src/main.cpp:220

Possible duplicates by query: bug 325320, bug 324513.

Reported using DrKonqi