Bug 277379

Application: nepomukservicestub (0.2)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
I've started Doplhin by clicking folder icon at my desktop. Same error happened few times recently, some package was possibly updated during last two weeks as I've never seen this before. I also have another computer that was yesterday installed with fresk -kubuntu 11.04 and I've also seen this error there

The crash can be reproduced some of the time.

-- Backtrace:
Application: Tymczasowa usługa Nepomuka (nepomukservicestub), 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 0x7fd07b541780 (LWP 3064))]

Thread 3 (Thread 0x7fd06a4f1700 (LWP 4797)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007fd078baa80f in _L_lock_12013 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fd078ba88d8 in __libc_free (mem=0x7fd078ebb1c0) at malloc.c:3736
#3  0x00007fd06ad64a07 in Nepomuk::Query::SearchRunnable::~SearchRunnable (this=0x16153d0, __in_chrg=<value optimized out>) at ../../../../nepomuk/services/queryservice/searchrunnable.cpp:62
#4  0x00007fd06ad64a29 in Nepomuk::Query::SearchRunnable::~SearchRunnable (this=0x16153d0, __in_chrg=<value optimized out>) at ../../../../nepomuk/services/queryservice/searchrunnable.cpp:64
#5  0x00007fd07af3d1bb in QThreadPoolThread::run (this=0x16158a0) at concurrent/qthreadpool.cpp:119
#6  0x00007fd07af48175 in QThreadPrivate::start (arg=0x16158a0) at thread/qthread_unix.cpp:320
#7  0x00007fd078914d8c in start_thread (arg=0x7fd06a4f1700) at pthread_create.c:304
#8  0x00007fd078c1204d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fd069cf0700 (LWP 4798)):
[KCrash Handler]
#6  _int_free (av=0x7fd078ebb1c0, p=0x1619a50) at malloc.c:4892
#7  0x00007fd078ba88e3 in __libc_free (mem=<value optimized out>) at malloc.c:3738
#8  0x00007fd07af8d0fc in QString::free (d=0x1619a60) at tools/qstring.cpp:1185
#9  0x00007fd07afedba4 in ~QString (domain=<value optimized out>) at ../../include/QtCore/../../src/corelib/tools/qstring.h:883
#10 QUrl::toAce (domain=<value optimized out>) at io/qurl.cpp:5884
#11 0x00007fd07aff0602 in QUrlPrivate::toEncoded (this=0x7fd05c004140, options=...) at io/qurl.cpp:3948
#12 0x00007fd07aff080d in QUrl::toEncoded (this=<value optimized out>, options=<value optimized out>) at io/qurl.cpp:5692
#13 0x00007fd075a2a622 in Soprano::Node::resourceToN3(QUrl const&) () from /usr/lib/libsoprano.so.4
#14 0x00007fd079ecc7e2 in Nepomuk::Types::EntityPrivate::load (this=0x161a3d0) at ../../nepomuk/types/entity.cpp:73
#15 0x00007fd079ecb961 in Nepomuk::Types::EntityPrivate::init (this=0x161a3d0) at ../../nepomuk/types/entity.cpp:51
#16 0x00007fd079ed30d7 in Nepomuk::Types::Property::maxCardinality (this=<value optimized out>) at ../../nepomuk/types/property.cpp:384
#17 0x00007fd0716a1700 in uniqueVarName (this=0x161df20, qbd=0x7fd069cef310) at ../../../nepomuk/query/querybuilderdata_p.h:121
#18 Nepomuk::Query::ComparisonTermPrivate::getMainVariableName (this=0x161df20, qbd=0x7fd069cef310) at ../../../nepomuk/query/comparisonterm.cpp:357
#19 0x00007fd0716a1e8d in Nepomuk::Query::ComparisonTermPrivate::toSparqlGraphPattern (this=0x161df20, resourceVarName=..., qbd=0x7fd069cef310) at ../../../nepomuk/query/comparisonterm.cpp:142
#20 0x00007fd07169fe36 in Nepomuk::Query::AndTermPrivate::toSparqlGraphPattern (this=<value optimized out>, resourceVarName=..., qbd=0x7fd069cef310) at ../../../nepomuk/query/andterm.cpp:34
#21 0x00007fd0716aa318 in Nepomuk::Query::Query::toSparqlQuery (this=0x160f8e8, sparqlFlags=...) at ../../../nepomuk/query/query.cpp:466
#22 0x00007fd06ad623db in Nepomuk::Query::Folder::sparqlQuery (this=<value optimized out>) at ../../../../nepomuk/services/queryservice/folder.cpp:122
#23 0x00007fd06ad65157 in Nepomuk::Query::SearchRunnable::run (this=0x1617c20) at ../../../../nepomuk/services/queryservice/searchrunnable.cpp:81
#24 0x00007fd07af3d188 in QThreadPoolThread::run (this=0x1619030) at concurrent/qthreadpool.cpp:106
#25 0x00007fd07af48175 in QThreadPrivate::start (arg=0x1619030) at thread/qthread_unix.cpp:320
#26 0x00007fd078914d8c in start_thread (arg=0x7fd069cf0700) at pthread_create.c:304
#27 0x00007fd078c1204d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#28 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd07b541780 (LWP 3064)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007fd078baa80f in _L_lock_12013 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fd078ba88d8 in __libc_free (mem=0x7fd078ebb1c0) at malloc.c:3736
#3  0x00007fd07af8d0fc in QString::free (d=0x1618ac0) at tools/qstring.cpp:1185
#4  0x00007fd07ac892f9 in ~QString (this=0x161b0b0, __in_chrg=<value optimized out>) at ../../include/QtCore/../../src/corelib/tools/qstring.h:883
#5  QDBusMessagePrivate::~QDBusMessagePrivate (this=0x161b0b0, __in_chrg=<value optimized out>) at qdbusmessage.cpp:72
#6  0x00007fd07ac8941f in QDBusMessage::~QDBusMessage (this=<value optimized out>, __in_chrg=<value optimized out>) at qdbusmessage.cpp:536
#7  0x00007fd07ac782a6 in QDBusActivateObjectEvent::~QDBusActivateObjectEvent (this=0x1618640, __in_chrg=<value optimized out>) at qdbusintegrator.cpp:1506
#8  0x00007fd07ac78359 in QDBusActivateObjectEvent::~QDBusActivateObjectEvent (this=0x1618640, __in_chrg=<value optimized out>) at qdbusintegrator.cpp:1516
#9  0x00007fd07b032c2e in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x14888a0) at kernel/qcoreapplication.cpp:1388
#10 0x00007fd07b05a253 in sendPostedEvents (s=0x14d28e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#11 postEventSourceDispatch (s=0x14d28e0) at kernel/qeventdispatcher_glib.cpp:277
#12 0x00007fd077e38bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007fd077e393a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fd077e39639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fd07b05a3ef in QEventDispatcherGlib::processEvents (this=0x14884a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#16 0x00007fd079426dfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#17 0x00007fd07b02e882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#18 0x00007fd07b02eabc in QEventLoop::exec (this=0x7fff454ff270, flags=...) at kernel/qeventloop.cpp:201
#19 0x00007fd07b032ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#20 0x0000000000403c3f in main (argc=2, argv=<value optimized out>) at ../../../nepomuk/servicestub/main.cpp:165

This bug may be a duplicate of or related to bug 272815.

Possible duplicates by query: bug 276373, bug 276125, bug 275986, bug 275747, bug 275675.

Reported using DrKonqi