Application: plasma-desktop (4.11.2)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-11-generic x86_64
Distribution: Ubuntu Saucy Salamander (development branch)

-- Information about the crash:
- What I was doing when the application crashed: Attempting to open Kickoff Application Launcher. As soon as i clicked on panel icon there was a crash.

- Unusual behavior I noticed: previous had noticed qbittorrent playing up. freezing. would not quit properly. even after 'quit',qbt icon remained frozen in system tray. on restart qbt would launch automatically. may be a panel/ system tray bug?

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f11525857c0 (LWP 2634))]

Thread 13 (Thread 0x7f11305f0700 (LWP 2637)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114b22506b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f114b2250a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f11458dff6e in start_thread (arg=0x7f11305f0700) at pthread_create.c:311
#4  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 12 (Thread 0x7f10a1884700 (LWP 2645)):
#0  0x00007f11452150da in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f11452153b9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f11451d5109 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f11451d562b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f11451d579c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f114ea3aa76 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f114ea0c5ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f114ea0c8e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f114e90b88f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f114e9edd13 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007f11458dff6e in start_thread (arg=0x7f10a1884700) at pthread_create.c:311
#12 0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 11 (Thread 0x7f10a0a14700 (LWP 2661)):
#0  0x00007f1151e6147d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f11451d5694 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f11451d579c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f114ea3aa76 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007f114ea0c5ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f114ea0c8e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f114e90b88f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f114e9edd13 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f11458dff6e in start_thread (arg=0x7f10a0a14700) at pthread_create.c:311
#10 0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 10 (Thread 0x7f1098970700 (LWP 2820)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#6  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#7  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#8  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f11458dff6e in start_thread (arg=0x7f1098970700) at pthread_create.c:311
#10 0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 9 (Thread 0x7f108f02b700 (LWP 2821)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f11458dff6e in start_thread (arg=0x7f108f02b700) at pthread_create.c:311
#8  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 8 (Thread 0x7f108d7b5700 (LWP 2822)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f11458dff6e in start_thread (arg=0x7f108d7b5700) at pthread_create.c:311
#8  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 7 (Thread 0x7f108cfb4700 (LWP 2823)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f11458dff6e in start_thread (arg=0x7f108cfb4700) at pthread_create.c:311
#7  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 6 (Thread 0x7f1087fff700 (LWP 2824)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f11458dff6e in start_thread (arg=0x7f1087fff700) at pthread_create.c:311
#7  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7f1086fc2700 (LWP 2825)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f11458dff6e in start_thread (arg=0x7f1086fc2700) at pthread_create.c:311
#8  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f10867c1700 (LWP 2826)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f11458dff6e in start_thread (arg=0x7f10867c1700) at pthread_create.c:311
#7  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f1085fc0700 (LWP 2827)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f114e90e406 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114a49fe6c in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f114a4a2903 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f114a4a291c in ?? () from /usr/lib/libthreadweaver.so.4
#6  0x00007f114a4a161f in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#7  0x00007f114e90df2f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f11458dff6e in start_thread (arg=0x7f1085fc0700) at pthread_create.c:311
#9  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f1084c7b700 (LWP 9977)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f114e90ca03 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f114e908ef5 in QMutex::lockInternal() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007f114e90dfa0 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007f11458dff6e in start_thread (arg=0x7f1084c7b700) at pthread_create.c:311
#5  0x00007f1151e6decd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f11525857c0 (LWP 2634)):
[KCrash Handler]
#5  0x00007f1151daaf77 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#6  0x00007f1151dae5e8 in __GI_abort () at abort.c:90
#7  0x00007f1151de84fb in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f1151efb740 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:199
#8  0x00007f1151df4996 in malloc_printerr (ptr=0x4f04b90, str=0x7f1151efb828 "double free or corruption (!prev)", action=3) at malloc.c:4923
#9  _int_free (av=<optimized out>, p=0x4f04b80, have_lock=0) at malloc.c:3779
#10 0x00007f114294907c in ?? () from /usr/lib/nvidia-319/libGL.so.1
#11 0x00007f114057c17a in ?? () from /usr/lib/nvidia-319/tls/libnvidia-tls.so.319.32
#12 0x00007f114e90d5db in QThread::start(QThread::Priority) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#13 0x00007f1133cb061d in Kickoff::SystemModel::startUsageInfoFetch() () from /usr/lib/libkickoff.so
#14 0x00007f114ea21a58 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007f114ea2a88a in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#16 0x00007f114ea25be1 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#17 0x00007f114ddaadfc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#18 0x00007f114ddb1470 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#19 0x00007f114f6d1a9a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#20 0x00007f114ea0d8bd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#21 0x00007f114ea3d403 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#22 0x00007f114ea3a7a1 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#23 0x00007f11451d53a6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f11451d56f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f11451d579c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f114ea3aa55 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#27 0x00007f114de4c9d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#28 0x00007f114ea0c5ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#29 0x00007f114ea0c8e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#30 0x00007f114ea11e5b in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#31 0x00007f11521772ac in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#32 0x00007f1151d95de5 in __libc_start_main (main=0x400700, argc=1, ubp_av=0x7ffffe7c1748, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffffe7c1738) at libc-start.c:260
#33 0x000000000040072e in _start ()

Possible duplicates by query: bug 325076, bug 324920, bug 324552, bug 324456, bug 324291.

Reported using DrKonqi