[Bug 275641] New: akregator null pointer deref

Andreas Karrenbauer andreas.karrenbauer at uni-konstanz.de
Tue Jun 14 16:41:43 BST 2011 

https://bugs.kde.org/show_bug.cgi?id=275641

           Summary: akregator null pointer deref
           Product: kontact
           Version: unspecified
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: andreas.karrenbauer at uni-konstanz.de


Application: kontact (4.6.0)
KDE Platform Version: 4.6.4 (4.6.4)
Qt Version: 4.7.3
Operating System: Linux 2.6.39.1-31-desktop x86_64
Distribution: "openSUSE 11.4 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
I've changed the feed immediately before the crash. However, it seemed that
Akregator has been in an undefined state before.

Anyways, I suggest that Article::title() and the functions alike shall check
Article::isNull() to die gracefully instead of letting kontact crash
completely.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
41      int result = INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL);
[Current thread is 1 (Thread 0x7ffe6f9f8760 (LWP 3287))]

Thread 3 (Thread 0x7ffe5829f700 (LWP 3338)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffe6c4821d4 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) ()
from /usr/lib64/libQtWebKit.so.4
#2  0x00007ffe67e39a3f in start_thread (arg=0x7ffe5829f700) at
pthread_create.c:297
#3  0x00007ffe6d02367d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ffe3e158700 (LWP 1081)):
#0  0x00007ffe6d01a503 in __poll (fds=<value optimized out>, nfds=<value
optimized out>, timeout=<value optimized out>) at
../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffe66ac9114 in ?? () from /lib64/libglib-2.0.so.0
#2  0x00007ffe66ac9650 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007ffe6e3f4286 in QEventDispatcherGlib::processEvents (this=0x8d45500,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007ffe6e3c88d2 in QEventLoop::processEvents (this=<value optimized
out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ffe6e3c8ae5 in QEventLoop::exec (this=0x7ffe3e157de0, flags=...) at
kernel/qeventloop.cpp:201
#6  0x00007ffe6e2dd7a4 in QThread::exec (this=<value optimized out>) at
thread/qthread.cpp:492
#7  0x00007ffe6e3aa008 in QInotifyFileSystemWatcherEngine::run (this=0x8701fb0)
at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007ffe6e2e0095 in QThreadPrivate::start (arg=0x8701fb0) at
thread/qthread_unix.cpp:320
#9  0x00007ffe67e39a3f in start_thread (arg=0x7ffe3e158700) at
pthread_create.c:297
#10 0x00007ffe6d02367d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffe6f9f8760 (LWP 3287)):
[KCrash Handler]
#4  0x00007ffe4e52936f in Akregator::Article::title (this=<value optimized
out>) at /usr/src/debug/kdepim-4.6.0/akregator/src/article.cpp:375
#5  0x00007ffe4e9b2454 in Akregator::ArticleModel::Private::Private
(this=0xb665270, articles_=<value optimized out>, qq=<value optimized out>) at
/usr/src/debug/kdepim-4.6.0/akregator/src/articlemodel.cpp:76
#6  0x00007ffe4e9b263a in Akregator::ArticleModel::ArticleModel
(this=0x5a488e0, articles=..., parent=<value optimized out>) at
/usr/src/debug/kdepim-4.6.0/akregator/src/articlemodel.cpp:79
#7  0x00007ffe4e9b8527 in
Akregator::SelectionController::articleHeadersAvailable (this=0x1097880,
job=<value optimized out>) at
/usr/src/debug/kdepim-4.6.0/akregator/src/selectioncontroller.cpp:212
#8  0x00007ffe4e9b8804 in Akregator::SelectionController::qt_metacall
(this=0x1097880, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
_a=0x7fffb2c3ad80) at
/usr/src/debug/kdepim-4.6.0/build/akregator/src/selectioncontroller.moc:92
#9  0x00007ffe6e3dda5f in QMetaObject::activate (sender=0x7604c00, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x7fffb2c3ad80)
at kernel/qobject.cpp:3278
#10 0x00007ffe6e7be30f in KJob::finished (this=<value optimized out>,
_t1=0x7604c00) at /usr/src/debug/kdelibs-4.6.4/build/kdecore/kjob.moc:173
#11 0x00007ffe6e7be4e5 in KJob::emitResult (this=0x7604c00) at
/usr/src/debug/kdelibs-4.6.4/kdecore/jobs/kjob.cpp:310
#12 0x00007ffe4e540a47 in Akregator::ArticleListJob::doList (this=0x7604c00) at
/usr/src/debug/kdepim-4.6.0/akregator/src/articlejobs.cpp:190
#13 0x00007ffe4e540b50 in Akregator::ArticleListJob::qt_metacall
(this=0x7604c00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
_a=<value optimized out>) at
/usr/src/debug/kdepim-4.6.0/build/akregator/src/articlejobs.moc:239
#14 0x00007ffe6e3dda5f in QMetaObject::activate (sender=0x97204e0, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x0) at
kernel/qobject.cpp:3278
#15 0x00007ffe6e3e46cf in QSingleShotTimer::timerEvent (this=0x97204e0) at
kernel/qtimer.cpp:308
#16 0x00007ffe6e3dd0a9 in QObject::event (this=0x97204e0, e=<value optimized
out>) at kernel/qobject.cpp:1181
#17 0x00007ffe6d791144 in QApplicationPrivate::notify_helper (this=0x63c3c0,
receiver=0x97204e0, e=0x7fffb2c3b660) at kernel/qapplication.cpp:4462
#18 0x00007ffe6d7996fa in QApplication::notify (this=<value optimized out>,
receiver=0x97204e0, e=0x7fffb2c3b660) at kernel/qapplication.cpp:4341
#19 0x00007ffe6ed2c3c6 in KApplication::notify (this=0x7fffb2c3ba20,
receiver=0x97204e0, event=0x7fffb2c3b660) at
/usr/src/debug/kdelibs-4.6.4/kdeui/kernel/kapplication.cpp:311
#20 0x00007ffe6e3c947c in QCoreApplication::notifyInternal
(this=0x7fffb2c3ba20, receiver=0x97204e0, event=0x7fffb2c3b660) at
kernel/qcoreapplication.cpp:731
#21 0x00007ffe6e3f6df8 in sendEvent (this=0x643d50) at
kernel/qcoreapplication.h:215
#22 QTimerInfoList::activateTimers (this=0x643d50) at
kernel/qeventdispatcher_unix.cpp:619
#23 0x00007ffe6e3f3b78 in timerSourceDispatch (source=<value optimized out>) at
kernel/qeventdispatcher_glib.cpp:184
#24 idleTimerSourceDispatch (source=<value optimized out>) at
kernel/qeventdispatcher_glib.cpp:231
#25 0x00007ffe66ac8bd3 in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#26 0x00007ffe66ac93b0 in ?? () from /lib64/libglib-2.0.so.0
#27 0x00007ffe66ac9650 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#28 0x00007ffe6e3f422f in QEventDispatcherGlib::processEvents (this=0x6133b0,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#29 0x00007ffe6d836bae in QGuiEventDispatcherGlib::processEvents (this=<value
optimized out>, flags=<value optimized out>) at
kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007ffe6e3c88d2 in QEventLoop::processEvents (this=<value optimized
out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007ffe6e3c8ae5 in QEventLoop::exec (this=0x7fffb2c3b970, flags=...) at
kernel/qeventloop.cpp:201
#32 0x00007ffe6e3ccf2b in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1008
#33 0x000000000040416f in main (argc=3, argv=0x7fffb2c3c048) at
/usr/src/debug/kdepim-4.6.0/kontact/src/main.cpp:218

Possible duplicates by query: bug 273772, bug 272345, bug 272022, bug 271818,
bug 270223.

Reported using DrKonqi

-- 
Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

More information about the Kdepim-bugs mailing list