Application that crashed: krunner
Version of the application: 0.1
KDE Version: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2))
Qt Version: 4.5.1
Operating System: Linux 2.6.28-13-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
when entering the equation "=17,50*24" into KRunner the application crashes with the given backtrace. The problem can NOT be reproduced. It is more like a random crash happening now an then.

 -- Backtrace:
Application: Oberfläche zur Ausführung von Befehlen (kdeinit4), signal: Aborted
__lll_lock_wait_private ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:91
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
[Current thread is 0 (LWP 3954)]

Thread 5 (Thread 0x7f1b77752950 (LWP 4371)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:91
#1  0x00007f1b99e7f025 in _L_lock_4783 () from /lib/libc.so.6
#2  0x00007f1b99e7b26b in *__GI___libc_free (mem=0x7f1b70000020) at malloc.c:3623
#3  0x00007f1b99e999dd in tzset_internal (always=<value optimized out>, explicit=<value optimized out>) at tzset.c:417
#4  0x00007f1b99e99d40 in __tzset () at tzset.c:577
#5  0x00007f1b9d44005f in QTime::currentTime () at tools/qdatetime.cpp:1839
#6  0x00007f1b9d4400fd in QTime::restart (this=0x7f1b70000020) at tools/qdatetime.cpp:2034
#7  0x00007f1b94e0807e in Plasma::AbstractRunner::performMatch (this=0xedf2e0, localContext=@0x80) at /build/buildd/kde4libs-4.2.96/plasma/abstractrunner.cpp:157
#8  0x00007f1b933df01c in ThreadWeaver::JobRunHelper::runTheJob (this=0x7f1b77751fd0, th=0xa75d00, job=0x1fbb400) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:106
#9  0x00007f1b933df341 in ThreadWeaver::Job::execute (this=0x1fbb400, th=0xa75d00) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:135
#10 0x00007f1b933de2df in ThreadWeaver::ThreadRunHelper::run (this=0x7f1b77752060, parent=0xbd3e90, th=0xa75d00) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:95
#11 0x00007f1b933de769 in ThreadWeaver::Thread::run (this=0xa75d00) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:142
#12 0x00007f1b9d432d02 in QThreadPrivate::start (arg=0xa75d00) at thread/qthread_unix.cpp:189
#13 0x00007f1b993023ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#14 0x00007f1b99ee6fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#15 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f1b76f51950 (LWP 4372)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:91
#1  0x00007f1b99e99e4b in _L_lock_1743 () at tzset.c:138
#2  0x00007f1b99e99d31 in __tzset () at tzset.c:575
#3  0x00007f1b9d44005f in QTime::currentTime () at tools/qdatetime.cpp:1839
#4  0x00007f1b9d4400fd in QTime::restart (this=0x7f1b9a16f5d4) at tools/qdatetime.cpp:2034
#5  0x00007f1b94e0807e in Plasma::AbstractRunner::performMatch (this=0xf01db0, localContext=@0x80) at /build/buildd/kde4libs-4.2.96/plasma/abstractrunner.cpp:157
#6  0x00007f1b933df01c in ThreadWeaver::JobRunHelper::runTheJob (this=0x7f1b76f50fd0, th=0x1177870, job=0x1f4c280) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:106
#7  0x00007f1b933df341 in ThreadWeaver::Job::execute (this=0x1f4c280, th=0x1177870) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:135
#8  0x00007f1b933de2df in ThreadWeaver::ThreadRunHelper::run (this=0x7f1b76f51060, parent=0xbd3e90, th=0x1177870) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:95
#9  0x00007f1b933de769 in ThreadWeaver::Thread::run (this=0x1177870) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:142
#10 0x00007f1b9d432d02 in QThreadPrivate::start (arg=0x1177870) at thread/qthread_unix.cpp:189
#11 0x00007f1b993023ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#12 0x00007f1b99ee6fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f1b76750950 (LWP 4373)):
[KCrash Handler]
#5  0x00007f1b99e33fb5 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#6  0x00007f1b99e35bc3 in *__GI_abort () at abort.c:88
#7  0x00007f1b99e73228 in __libc_message (do_abort=2, fmt=0x7f1b99f3d488 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:170
#8  0x00007f1b99e78cb8 in malloc_printerr (action=2, str=0x7f1b99f3d528 "double free or corruption (fasttop)", ptr=<value optimized out>) at malloc.c:5994
#9  0x00007f1b99e7cdb7 in _int_realloc (av=0x846, oldmem=0x7f1b70075f10, bytes=<value optimized out>) at malloc.c:5083
#10 0x00007f1b99e7ddae in *__GI___libc_realloc (oldmem=0x7f1b70019220, bytes=40) at malloc.c:3708
#11 0x00007f1b9d45683b in QListData::realloc (this=0x7f1b7a7acc90, alloc=<value optimized out>) at tools/qlistdata.cpp:111
#12 0x00007f1b9d456a5b in QListData::append (this=0x7f1b7a7acc90) at tools/qlistdata.cpp:131
#13 0x00007f1b7a4cbdc0 in QList<QString>::append (this=0x7f1b7a7acc90, t=@0x7f1b7674fbd0) at ../../include/QtCore/../../src/corelib/tools/qlist.h:429
#14 0x00007f1b7a52211b in QScriptEnginePrivate::convertToNativeString_helper (value=@0x1fc27f8) at qscriptengine_p.cpp:1024
#15 0x00007f1b7a560f1d in QScriptValue::toString (this=<value optimized out>) at qscriptengine_p.h:227
#16 0x00007f1b7860587b in CalculatorRunner::calculate (this=<value optimized out>, term=@0x7f1b7674fe50) at /build/buildd/kdebase-workspace-4.2.96/plasma/runners/calculator/calculatorrunner.cpp:239
#17 0x00007f1b78606faa in CalculatorRunner::match (this=0xf9cdc0, context=@0x1fbd098) at /build/buildd/kdebase-workspace-4.2.96/plasma/runners/calculator/calculatorrunner.cpp:212
#18 0x00007f1b94e0808b in Plasma::AbstractRunner::performMatch (this=0xf9cdc0, localContext=@0x1fbd098) at /build/buildd/kde4libs-4.2.96/plasma/abstractrunner.cpp:160
#19 0x00007f1b933df01c in ThreadWeaver::JobRunHelper::runTheJob (this=0x7f1b7674ffd0, th=0xf97450, job=0x1fbd080) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:106
#20 0x00007f1b933df341 in ThreadWeaver::Job::execute (this=0x1fbd080, th=0xf97450) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:135
#21 0x00007f1b933de2df in ThreadWeaver::ThreadRunHelper::run (this=0x7f1b76750060, parent=0xbd3e90, th=0xf97450) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:95
#22 0x00007f1b933de769 in ThreadWeaver::Thread::run (this=0xf97450) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:142
#23 0x00007f1b9d432d02 in QThreadPrivate::start (arg=0xf97450) at thread/qthread_unix.cpp:189
#24 0x00007f1b993023ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#25 0x00007f1b99ee6fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#26 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1b75f4f950 (LWP 4374)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:91
#1  0x00007f1b99e7f3d8 in _L_lock_10318 () from /lib/libc.so.6
#2  0x00007f1b99e7dd95 in *__GI___libc_realloc (oldmem=0x7f1b70000020, bytes=56) at malloc.c:3700
#3  0x00007f1b9d45683b in QListData::realloc (this=0x7f1b7a7acc90, alloc=<value optimized out>) at tools/qlistdata.cpp:111
#4  0x00007f1b9d456a5b in QListData::append (this=0x7f1b7a7acc90) at tools/qlistdata.cpp:131
#5  0x00007f1b7a4cbdc0 in QList<QString>::append (this=0x7f1b7a7acc90, t=@0x7f1b75f4ebb0) at ../../include/QtCore/../../src/corelib/tools/qlist.h:429
#6  0x00007f1b7a5221a3 in QScriptEnginePrivate::convertToNativeString_helper (value=@0x7f1b70075ee8) at qscriptengine_p.cpp:1026
#7  0x00007f1b7a560f1d in QScriptValue::toString (this=<value optimized out>) at qscriptengine_p.h:227
#8  0x00007f1b7860587b in CalculatorRunner::calculate (this=<value optimized out>, term=@0x7f1b75f4ee50) at /build/buildd/kdebase-workspace-4.2.96/plasma/runners/calculator/calculatorrunner.cpp:239
#9  0x00007f1b78606faa in CalculatorRunner::match (this=0xf9cdc0, context=@0x7f1b6405de58) at /build/buildd/kdebase-workspace-4.2.96/plasma/runners/calculator/calculatorrunner.cpp:212
#10 0x00007f1b94e0808b in Plasma::AbstractRunner::performMatch (this=0xf9cdc0, localContext=@0x7f1b6405de58) at /build/buildd/kde4libs-4.2.96/plasma/abstractrunner.cpp:160
#11 0x00007f1b933df01c in ThreadWeaver::JobRunHelper::runTheJob (this=0x7f1b75f4efd0, th=0x11789a0, job=0x7f1b6405de40) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:106
#12 0x00007f1b933df341 in ThreadWeaver::Job::execute (this=0x7f1b6405de40, th=0x11789a0) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Job.cpp:135
#13 0x00007f1b933de2df in ThreadWeaver::ThreadRunHelper::run (this=0x7f1b75f4f060, parent=0xbd3e90, th=0x11789a0) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:95
#14 0x00007f1b933de769 in ThreadWeaver::Thread::run (this=0x11789a0) at /build/buildd/kde4libs-4.2.96/threadweaver/Weaver/Thread.cpp:142
#15 0x00007f1b9d432d02 in QThreadPrivate::start (arg=0x11789a0) at thread/qthread_unix.cpp:189
#16 0x00007f1b993023ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#17 0x00007f1b99ee6fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#18 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1b9d9f5750 (LWP 3954)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:91
#1  0x00007f1b99e7f025 in _L_lock_4783 () from /lib/libc.so.6
#2  0x00007f1b99e7b26b in *__GI___libc_free (mem=0x7f1b70000020) at malloc.c:3623
#3  0x00007f1b9d4767cc in QString::free (d=0x7f1b70078860) at tools/qstring.cpp:953
#4  0x00007f1b7a4e3641 in ~QStringList (this=<value optimized out>) at ../../include/QtCore/../../src/corelib/tools/qstring.h:866
#5  0x00007f1b99e376ed in *__GI_exit (status=1) at exit.c:75
#6  0x00007f1b9ab1b308 in qt_xio_errhandler () at kernel/qapplication_x11.cpp:707
#7  0x00007f1b9bbfa058 in KApplication::xioErrhandler (this=0xb01fc0, dpy=0xb21510) at /build/buildd/kde4libs-4.2.96/kdeui/kernel/kapplication.cpp:408
#8  0x00007f1b9ca556e4 in _XIOError () from /usr/lib/libX11.so.6
#9  0x00007f1b9ca5ca1f in ?? () from /usr/lib/libX11.so.6
#10 0x00007f1b9ca5d345 in _XEventsQueued () from /usr/lib/libX11.so.6
#11 0x00007f1b9ca45ed3 in XEventsQueued () from /usr/lib/libX11.so.6
#12 0x00007f1b9ab568cc in x11EventSourceCheck (s=0xb05aa0) at kernel/qguieventdispatcher_glib.cpp:87
#13 0x00007f1b99553ed2 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#14 0x00007f1b995547c9 in ?? () from /usr/lib/libglib-2.0.so.0
#15 0x00007f1b99554a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#16 0x00007f1b9d54552f in QEventDispatcherGlib::processEvents (this=0xa76e70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#17 0x00007f1b9ab5670f in QGuiEventDispatcherGlib::processEvents (this=0x7f1b70000020, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#18 0x00007f1b9d51a6a2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1516042832}) at kernel/qeventloop.cpp:149
#19 0x00007f1b9d51aa6d in QEventLoop::exec (this=0x7fffa5a305f0, flags={i = -1516042752}) at kernel/qeventloop.cpp:200
#20 0x00007f1b9d51cd34 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#21 0x00007f1b914409cc in kdemain (argc=1, argv=0xacd3c0) at /build/buildd/kdebase-workspace-4.2.96/krunner/main.cpp:65
#22 0x0000000000407215 in launch (argc=1, _name=0xab5188 "/usr/bin/krunner", args=<value optimized out>, cwd=0x0, envc=0, envs=0xab51a1 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3c9 "0") at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:676
#23 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1168
#24 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1361
#25 0x0000000000408b26 in main (argc=2, argv=0x7fffa5a31458, envp=0x7fffa5a31470) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1788
91	in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S

Reported using DrKonqi