Bug 276373

Summary: Crash after using wget to download website contents (and other situations related to files changing) [free, ~QString, QFSFileEngine::fileFlags, ..., Nepomuk::StrigiService::indexFolder]
Product: [Unmaintained] nepomuk Reporter: Ian H <ian.hollander+kdebugs>
Component: generalAssignee: Sebastian Trueg <sebastian>
Status: RESOLVED DUPLICATE    
Severity: crash CC: andresbajotierra, efraim.feinstein, haavardw, me, nilspeper, s.hs, sreejiththulaseedharan, trueg
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Ian H 2011-06-24 00:36:52 UTC 
Application: nepomukservicestub (0.2)
KDE Platform Version: 4.6.4 (4.6.4)
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:

Downloading website based on wget command described by the link:
http://www.linuxjournal.com/content/downloading-entire-web-site-wget

-- Backtrace:
Application: Nepomuk Service Stub (nepomukservicestub), signal: Aborted
[Current thread is 1 (Thread 0x7f2896e2a780 (LWP 2536))]

Thread 3 (Thread 0x7f2886144700 (LWP 2547)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f289449180f in _L_lock_12013 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f289448f8d8 in __libc_free (mem=0x7f28947a21c0) at malloc.c:3736
#3  0x00007f28968750fc in QString::free (d=0x142a9c0) at tools/qstring.cpp:1185
#4  0x00007f2896936cc9 in ~QString (d=0x1462910) at ../../include/QtCore/../../src/corelib/tools/qstring.h:883
#5  v_clear<QString> (d=0x1462910) at ../../include/QtCore/private/../../../src/corelib/kernel/qvariant_p.h:144
#6  clear (d=0x1462910) at kernel/qvariant.cpp:199
#7  0x00007f2891326644 in ?? () from /usr/lib/libsoprano.so.4
#8  0x00007f2891312f9b in ?? () from /usr/lib/libsoprano.so.4
#9  0x00007f288677950d in ~QHashNode (node=0x142a9f0) at /usr/include/qt4/QtCore/qhash.h:217
#10 QHash<QUrl, Soprano::Node>::deleteNode2 (node=0x142a9f0) at /usr/include/qt4/QtCore/qhash.h:519
#11 0x00007f289684bf6d in QHashData::free_helper (this=0x14299d0, node_delete=0x7f2886779500 <QHash<QUrl, Soprano::Node>::deleteNode2(QHashData::Node*)>) at tools/qhash.cpp:271
#12 0x00007f28867795a3 in freeData (node=0x14344a0) at /usr/include/qt4/QtCore/qhash.h:568
#13 ~QHash (node=0x14344a0) at /usr/include/qt4/QtCore/qhash.h:284
#14 ~QMultiHash (node=0x14344a0) at /usr/include/qt4/QtCore/qhash.h:923
#15 ~ResourceStruct (node=0x14344a0) at ../../../../nepomuk/services/strigi/nepomukindexfeeder.h:102
#16 ~QHashNode (node=0x14344a0) at /usr/include/qt4/QtCore/qhash.h:217
#17 QHash<QUrl, Nepomuk::IndexFeeder::ResourceStruct>::deleteNode2 (node=0x14344a0) at /usr/include/qt4/QtCore/qhash.h:519
#18 0x00007f289684bf6d in QHashData::free_helper (this=0x1027570, node_delete=0x7f2886779580 <QHash<QUrl, Nepomuk::IndexFeeder::ResourceStruct>::deleteNode2(QHashData::Node*)>) at tools/qhash.cpp:271
#19 0x00007f2886779365 in freeData (this=0xe338a0) at /usr/include/qt4/QtCore/qhash.h:568
#20 ~QHash (this=0xe338a0) at /usr/include/qt4/QtCore/qhash.h:284
#21 ~Request (this=0xe338a0) at ../../../../nepomuk/services/strigi/nepomukindexfeeder.h:110
#22 Nepomuk::IndexFeeder::run (this=0xe338a0) at ../../../../nepomuk/services/strigi/nepomukindexfeeder.cpp:171
#23 0x00007f2896830175 in QThreadPrivate::start (arg=0xe338a0) at thread/qthread_unix.cpp:320
#24 0x00007f28941fbd8c in start_thread (arg=0x7f2886144700) at pthread_create.c:304
#25 0x00007f28944f904d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#26 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2880d99700 (LWP 2551)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f289449180f in _L_lock_12013 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f289448f8d8 in __libc_free (mem=0x7f28947a21c0) at malloc.c:3736
#3  0x00007f28968750fc in QString::free (d=0x1431dd0) at tools/qstring.cpp:1185
#4  0x00007f2896875672 in QString::operator= (this=<value optimized out>, other=...) at tools/qstring.cpp:1359
#5  0x00007f28968f3f5a in QFSFileEngineIterator::advance (this=0x7f287c0ae1c0) at io/qfsfileengine_iterator_unix.cpp:73
#6  0x00007f28968ec390 in QFSFileEngineIterator::next (this=0x7f287c0ae1c0) at io/qfsfileengine_iterator.cpp:65
#7  0x00007f28968ab2e4 in QDirIteratorPrivate::advance (this=0x7f287c07cf10) at io/qdiriterator.cpp:217
#8  0x00007f28968ab48d in QDirIterator::next (this=0x7f2880d98bc0) at io/qdiriterator.cpp:457
#9  0x00007f288676fdaa in Nepomuk::IndexScheduler::analyzeDir (this=0xd9d2c0, dir_=<value optimized out>, flags=...) at ../../../../nepomuk/services/strigi/indexscheduler.cpp:391
#10 0x00007f28867706ec in Nepomuk::IndexScheduler::run (this=0xd9d2c0) at ../../../../nepomuk/services/strigi/indexscheduler.cpp:338
#11 0x00007f2896830175 in QThreadPrivate::start (arg=0xd9d2c0) at thread/qthread_unix.cpp:320
#12 0x00007f28941fbd8c in start_thread (arg=0x7f2880d99700) at pthread_create.c:304
#13 0x00007f28944f904d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2896e2a780 (LWP 2536)):
[KCrash Handler]
#6  0x00007f2894446d05 in raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007f289444aab6 in abort () at abort.c:92
#8  0x00007f289447fd7b in __libc_message (do_abort=2, fmt=0x7f2894568400 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#9  0x00007f289448ba8f in malloc_printerr (av=<value optimized out>, p=0x1435880) at malloc.c:6283
#10 _int_free (av=<value optimized out>, p=0x1435880) at malloc.c:4795
#11 0x00007f289448f8e3 in __libc_free (mem=<value optimized out>) at malloc.c:3738
#12 0x00007f28968750fc in QString::free (d=0x1435890) at tools/qstring.cpp:1185
#13 0x00007f28968f2162 in ~QString (this=0x103f730, type=...) at ../../include/QtCore/../../src/corelib/tools/qstring.h:883
#14 QFSFileEngine::fileFlags (this=0x103f730, type=...) at io/qfsfileengine_unix.cpp:879
#15 0x00007f28968b0315 in QFileInfoPrivate::getFileFlags (this=0x10600e0, request=...) at io/qfileinfo.cpp:126
#16 0x00007f28968b107e in QFileInfo::exists (this=<value optimized out>) at io/qfileinfo.cpp:599
#17 0x00007f288676aaf7 in Nepomuk::StrigiService::indexFolder (this=0xdc4ef0, path=<value optimized out>, recursive=false, forced=false) at ../../../../nepomuk/services/strigi/strigiservice.cpp:253
#18 0x00007f288676ae33 in Nepomuk::StrigiService::updateFolder (this=0xdc4ef0, path=..., recursive=false, forced=false) at ../../../../nepomuk/services/strigi/strigiservice.cpp:232
#19 0x00007f288677c91d in StrigiAdaptor::qt_metacall (this=0xf47110, _c=QMetaObject::InvokeMetaMethod, _id=15, _a=0x7fff9c50d600) at strigiadaptor.moc:157
#20 0x00007f28965659fa in QDBusConnectionPrivate::deliverCall (this=0xce8fd0, object=0xf47110, msg=..., metaTypes=..., slotIdx=19) at qdbusintegrator.cpp:942
#21 0x00007f2896566bb5 in QDBusConnectionPrivate::activateCall (this=0xce8fd0, object=0xf47110, flags=337, msg=...) at qdbusintegrator.cpp:852
#22 0x00007f289656733a in QDBusConnectionPrivate::activateObject (this=0xce8fd0, node=..., msg=..., pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1410
#23 0x00007f2896567578 in QDBusActivateObjectEvent::placeMetaCall (this=0x7f28741118a0) at qdbusintegrator.cpp:1524
#24 0x00007f289692b49a in QObject::event (this=0xdc4ef0, e=<value optimized out>) at kernel/qobject.cpp:1226
#25 0x00007f2894c669e4 in QApplicationPrivate::notify_helper (this=0xca3ef0, receiver=0xdc4ef0, e=0x7f28741118a0) at kernel/qapplication.cpp:4462
#26 0x00007f2894c6b3aa in QApplication::notify (this=<value optimized out>, receiver=0xdc4ef0, e=0x7f28741118a0) at kernel/qapplication.cpp:4341
#27 0x00007f2895c55716 in KApplication::notify (this=0x7fff9c50e400, receiver=0xdc4ef0, event=0x7f28741118a0) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f289691749c in QCoreApplication::notifyInternal (this=0x7fff9c50e400, receiver=0xdc4ef0, event=0x7f28741118a0) at kernel/qcoreapplication.cpp:731
#29 0x00007f289691ac25 in sendEvent (receiver=0x0, event_type=0, data=0xc5f8a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#30 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xc5f8a0) at kernel/qcoreapplication.cpp:1372
#31 0x00007f2896942253 in sendPostedEvents (s=0xca6dc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#32 postEventSourceDispatch (s=0xca6dc0) at kernel/qeventdispatcher_glib.cpp:277
#33 0x00007f289371fbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f28937203a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f2893720639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f28969423ef in QEventDispatcherGlib::processEvents (this=0xc5f4a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#37 0x00007f2894d0ddfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#38 0x00007f2896916882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#39 0x00007f2896916abc in QEventLoop::exec (this=0x7fff9c50e210, flags=...) at kernel/qeventloop.cpp:201
#40 0x00007f289691aecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#41 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 276125.

Possible duplicates by query: bug 276344, bug 276125, bug 275986, bug 275788, bug 275775.

Reported using DrKonqi
Comment 1 Dario Andres 2011-08-07 14:25:56 UTC 
[Comment from a bug triager]
From bug 276943 (KDE SC 4.6.4):
- What I was doing when the application crashed:
I did exactly nothing but browsing in the web with Chromium. Kontact is running
and Nepomuk is activated. RAM isn’t full.

From bug 278100 (KDE SC 4.6.5):
- What I was doing when the application crashed:
Compiling in the background. Open applications: firefox, xemacs, konsole.
Absolutely no user interaction between at least two crashes (except from
closing the crash dialog)

Additionally, this looks related to another reports like bug 277419 or bug 275169
Comment 2 Dario Andres 2011-08-07 14:26:06 UTC 
*** Bug 276943 has been marked as a duplicate of this bug. ***
Comment 3 Dario Andres 2011-08-07 14:26:09 UTC 
*** Bug 278100 has been marked as a duplicate of this bug. ***
Comment 4 Sebastian Trueg 2011-09-20 08:03:56 UTC 
*** Bug 275986 has been marked as a duplicate of this bug. ***
Comment 5 Sebastian Trueg 2011-09-20 08:07:47 UTC 
*** Bug 281048 has been marked as a duplicate of this bug. ***
Comment 6 Sebastian Trueg 2011-09-20 12:32:51 UTC 

*** This bug has been marked as a duplicate of bug 282124 ***