Application: kactivitymanagerd (1.0)
KDE Platform Version: 4.8.00 (4.8.0
Qt Version: 4.7.4
Operating System: Linux 3.0.0-16-generic x86_64
Distribution: Ubuntu 11.10

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

I have noticed this a couple of times recently.  I just boot up and log in to KDE, and the crash message comes up before I've opened any other programs after logging in.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KDE Activity Manager (kactivitymanagerd), signal: Segmentation fault
__lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
[Current thread is 1 (Thread 0x7fe20b3ec780 (LWP 1612))]

Thread 2 (Thread 0x7fe1fc080700 (LWP 1635)):
[KCrash Handler]
#6  malloc_consolidate (av=0x7fe1f4000020) at malloc.c:5153
#7  0x00007fe2089dfdff in malloc_consolidate (av=0x7fe1f4000020) at malloc.c:5115
#8  _int_malloc (av=0x7fe1f4000020, bytes=17179869112) at malloc.c:4373
#9  0x00007fe2089e2902 in __GI___libc_malloc (bytes=17179869112) at malloc.c:3675
#10 0x00007fe208dbf4cd in operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#11 0x00007fe208dbf5e9 in operator new[](unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#12 0x00007fe209d8d5e7 in QHashData::detach_helper2 (this=0x7fe1f4000f10, node_duplicate=0x7fe2063b9360, node_delete=0x7fe2063b91c0, nodeSize=40, nodeAlign=8) at tools/qhash.cpp:217
#13 0x00007fe2063b8488 in Soprano::Error::ErrorCache::clearError() const () from /usr/lib/libsoprano.so.4
#14 0x00007fe2063b89e8 in Soprano::Error::ErrorCache::setError(Soprano::Error::Error const&) const () from /usr/lib/libsoprano.so.4
#15 0x00007fe20615085c in Soprano::Client::DBusModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib/libsopranoclient.so.1
#16 0x00007fe20a4597e2 in Nepomuk::MainModel::executeQuery (this=0x1fb8690, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at ../../nepomuk/core/nepomukmainmodel.cpp:212
#17 0x00007fe2063c7bd7 in Soprano::FilterModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib/libsoprano.so.4
#18 0x00007fe1fc08803c in ?? () from /usr/lib/kde4/activitymanager_plugin_nepomuk.so
#19 0x00007fe1fc08edd8 in ?? () from /usr/lib/kde4/activitymanager_plugin_nepomuk.so
#20 0x00007fe209d71d05 in QThreadPrivate::start (arg=0x1ff5250) at thread/qthread_unix.cpp:331
#21 0x00007fe207dc6efc in start_thread (arg=0x7fe1fc080700) at pthread_create.c:304
#22 0x00007fe208a4789d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#23 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe20b3ec780 (LWP 1612)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007fe2089e49df in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fe2089e2d71 in __GI___libc_free (mem=0x7fe1f4000020) at malloc.c:3736
#3  0x00007fe209e5c52e in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1e03620) at kernel/qcoreapplication.cpp:1444
#4  0x00007fe209e83a73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#5  postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#6  0x00007fe2053fba5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fe2053fc258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fe2053fc429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fe209e83ed6 in QEventDispatcherGlib::processEvents (this=0x1e04ce0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#10 0x00007fe2092b010e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#11 0x00007fe209e57cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#12 0x00007fe209e57ef7 in QEventLoop::exec (this=0x7fff32a893f0, flags=...) at kernel/qeventloop.cpp:201
#13 0x00007fe209e5c789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#14 0x0000000000405a14 in ?? ()
#15 0x00007fe20898730d in __libc_start_main (main=0x405880, argc=1, ubp_av=0x7fff32a89658, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff32a89648) at libc-start.c:226
#16 0x0000000000405a69 in _start ()

Possible duplicates by query: bug 292327, bug 291768, bug 290503, bug 289054, bug 284552.

Reported using DrKonqi