Application: kmail (4.8.0)
KDE Platform Version: 4.8.1 (4.8.1)
Qt Version: 4.8.0
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 was browsing different mails by klicking on list entries. This kind of crash happens very regularly, especially when I switch quickly beween mails.
- Custom settings of the application:
IMAP account.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KMail (kmail), 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 0x7fe57f5f67c0 (LWP 7868))]

Thread 5 (Thread 0x7fe55ecae700 (LWP 7872)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe571a26c2c in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fe571a26d59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fe57a514efc in start_thread (arg=0x7fe55ecae700) at pthread_create.c:304
#4  0x00007fe57c97f59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fe55e3ad700 (LWP 7873)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007fe57c91c62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fe57c91a9c1 in __GI___libc_free (mem=0x7fe558000020) at malloc.c:3736
#3  0x00007fe57d3048d4 in QTimerInfoList::unregisterTimer (this=0x1ef3190, timerId=1879048206) at kernel/qeventdispatcher_unix.cpp:507
#4  0x00007fe57d2f1f51 in stop (this=0x7fe558011430) at kernel/qtimer.cpp:266
#5  QTimer::stop (this=0x7fe558011430) at kernel/qtimer.cpp:263
#6  0x00007fe57d2f2055 in QTimer::timerEvent (this=0x7fe558011430, e=<optimized out>) at kernel/qtimer.cpp:279
#7  0x00007fe57d2ed8d9 in QObject::event (this=0x7fe558011430, e=<optimized out>) at kernel/qobject.cpp:1157
#8  0x00007fe57d7f7104 in notify_helper (e=0x7fe55e3acb50, receiver=0x7fe558011430, this=0x16bf600) at kernel/qapplication.cpp:4555
#9  QApplicationPrivate::notify_helper (this=0x16bf600, receiver=0x7fe558011430, e=0x7fe55e3acb50) at kernel/qapplication.cpp:4527
#10 0x00007fe57d7fbf83 in QApplication::notify (this=0x7fff10157830, receiver=0x7fe558011430, e=0x7fe55e3acb50) at kernel/qapplication.cpp:4416
#11 0x00007fe57f0259a6 in KApplication::notify (this=0x7fff10157830, receiver=0x7fe558011430, event=0x7fe55e3acb50) at ../../kdeui/kernel/kapplication.cpp:311
#12 0x00007fe57d2d45fc in QCoreApplication::notifyInternal (this=0x7fff10157830, receiver=0x7fe558011430, event=0x7fe55e3acb50) at kernel/qcoreapplication.cpp:876
#13 0x00007fe57d3059a2 in sendEvent (event=0x7fe55e3acb50, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#14 QTimerInfoList::activateTimers (this=0x1ef3190) at kernel/qeventdispatcher_unix.cpp:611
#15 0x00007fe57d30336d in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186
#16 timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:180
#17 0x00007fe57d303391 in idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:233
#18 0x00007fe57530ea5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fe57530f258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fe57530f429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fe57d303c06 in QEventDispatcherGlib::processEvents (this=0x1c73ad0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:426
#22 0x00007fe57d2d33e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#23 0x00007fe57d2d3637 in QEventLoop::exec (this=0x7fe55e3acdc0, flags=...) at kernel/qeventloop.cpp:204
#24 0x00007fe57d1d3067 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#25 0x00007fe57d1d608b in QThreadPrivate::start (arg=0x1c737d0) at thread/qthread_unix.cpp:298
#26 0x00007fe57a514efc in start_thread (arg=0x7fe55e3ad700) at pthread_create.c:304
#27 0x00007fe57c97f59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#28 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fe5172bc700 (LWP 7912)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007fe57c91c62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fe57c91a9c1 in __GI___libc_free (mem=0x7fe558000020) at malloc.c:3736
#3  0x00007fe57b9d8feb in QAbstractSocket::disconnectFromHostImplementation (this=0x7fe5580117b8) at socket/qabstractsocket.cpp:2510
#4  0x00007fe57b9d967d in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at .moc/release-shared/moc_qabstractsocket.cpp:168
#5  QAbstractSocket::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/release-shared/moc_qabstractsocket.cpp:152
#6  0x00007fe57d2dc661 in QMetaMethod::invoke (this=0x7fe5172bb8c0, object=0x7fe5580117b8, connectionType=Qt::DirectConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1641
#7  0x00007fe57d2de970 in QMetaObject::invokeMethod (obj=0x7fe5580117b8, member=<optimized out>, type=Qt::DirectConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#8  0x00007fe57b9d48b4 in invokeMethod (val9=..., val8=..., val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=..., type=Qt::DirectConnection, member=0x7fe57ba0f820 "disconnectFromHostImplementation", obj=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs.h:418
#9  QAbstractSocket::disconnectFromHost (this=<optimized out>) at socket/qabstractsocket.cpp:2474
#10 0x00007fe57b9d49e7 in QAbstractSocket::close (this=0x7fe5580117b8) at socket/qabstractsocket.cpp:2452
#11 0x00007fe57b9e5e7b in QLocalSocket::close (this=<optimized out>) at socket/qlocalsocket_unix.cpp:436
#12 0x00007fe57b9de93b in QLocalSocket::~QLocalSocket (this=0x7fe558023650, __in_chrg=<optimized out>) at socket/qlocalsocket.cpp:348
#13 0x00007fe57b9de989 in QLocalSocket::~QLocalSocket (this=0x7fe558023650, __in_chrg=<optimized out>) at socket/qlocalsocket.cpp:353
#14 0x00007fe56ef5cd60 in ?? () from /usr/lib/libsopranoclient.so.1
#15 0x00007fe56ef5cdf9 in ?? () from /usr/lib/libsopranoclient.so.1
#16 0x00007fe57d1d4360 in QThreadStorageData::finish (p=0x1f8d3a8) at thread/qthreadstorage.cpp:203
#17 0x00007fe57d1d4eb7 in QThreadPrivate::finish (arg=0x1f8dc70) at thread/qthread_unix.cpp:321
#18 0x00007fe57d1d6093 in ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:545
#19 ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at thread/qthread_unix.cpp:716
#20 QThreadPrivate::start (arg=0x1f8dc70) at thread/qthread_unix.cpp:273
#21 0x00007fe57a514efc in start_thread (arg=0x7fe5172bc700) at pthread_create.c:304
#22 0x00007fe57c97f59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#23 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fe55c892700 (LWP 7914)):
[KCrash Handler]
#6  0x00007fe57c916a14 in malloc_consolidate (av=0x7fe558000020) at malloc.c:5161
#7  0x00007fe57c917a4f in malloc_consolidate (av=0x7fe558000020) at malloc.c:5115
#8  _int_malloc (av=0x7fe558000020, bytes=65536) at malloc.c:4373
#9  0x00007fe57c91a3cd in __GI___libc_malloc (bytes=65536) at malloc.c:3660
#10 0x00007fe57d1d8088 in QByteArray::realloc (this=0x7fe5581077b8, alloc=65504) at tools/qbytearray.cpp:1452
#11 0x00007fe57d1d81a9 in QByteArray::resize (this=0x7fe5581077b8, size=32768) at tools/qbytearray.cpp:1420
#12 0x00007fe57b9daa06 in reserve (bytes=2, this=0x7fe55800ced0) at ../../include/QtCore/private/../../../src/corelib/tools/qringbuffer_p.h:158
#13 QAbstractSocket::writeData (this=<optimized out>, data=0x7fe55c8915ec "\021", size=2) at socket/qabstractsocket.cpp:2315
#14 0x00007fe57d2674af in QIODevice::write (this=0x7fe5580058a0, data=0x7fe55c8915ec "\021", maxSize=<optimized out>) at io/qiodevice.cpp:1370
#15 0x00007fe56ef56095 in ?? () from /usr/lib/libsopranoclient.so.1
#16 0x00007fe56ef5c28a in ?? () from /usr/lib/libsopranoclient.so.1
#17 0x00007fe56ef5da03 in ?? () from /usr/lib/libsopranoclient.so.1
#18 0x00007fe575d500b2 in Nepomuk::MainModel::executeQuery (this=0x1c64750, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at ../../nepomuk/core/nepomukmainmodel.cpp:212
#19 0x00007fe575d40083 in Nepomuk::ResourceData::load (this=0x7fe55806c270) at ../../nepomuk/core/resourcedata.cpp:417
#20 0x00007fe575d4095c in Nepomuk::ResourceData::property (this=0x7fe55806c270, uri=...) at ../../nepomuk/core/resourcedata.cpp:265
#21 0x00007fe575d54893 in Nepomuk::Resource::property (this=0x7fe55c891cc0, uri=...) at ../../nepomuk/core/resource.cpp:301
#22 0x00007fe5790b37da in MessageCore::NepomukResourceRetrieverRunnable::run (this=0x3fafc80) at ../../messagecore/asyncnepomukresourceretriever.cpp:47
#23 0x00007fe57d1c95b2 in QThreadPoolThread::run (this=0x2f63d90) at concurrent/qthreadpool.cpp:107
#24 0x00007fe57d1d608b in QThreadPrivate::start (arg=0x2f63d90) at thread/qthread_unix.cpp:298
#25 0x00007fe57a514efc in start_thread (arg=0x7fe55c892700) at pthread_create.c:304
#26 0x00007fe57c97f59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#27 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe57f5f67c0 (LWP 7868)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007fe57c91c62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fe57c91a9c1 in __GI___libc_free (mem=0x7fe558000020) at malloc.c:3736
#3  0x00007fe57b05091e in qMetaTypeDeleteHelper<QDBusMessage> (t=0x4062bf0) at ../../include/QtCore/../../src/corelib/kernel/qmetatype.h:134
#4  0x00007fe57d2e5009 in QMetaCallEvent::~QMetaCallEvent (this=0x4055560, __in_chrg=<optimized out>) at kernel/qobject.cpp:509
#5  0x00007fe57d2e5069 in QMetaCallEvent::~QMetaCallEvent (this=0x4055560, __in_chrg=<optimized out>) at kernel/qobject.cpp:518
#6  0x00007fe57d2d83d3 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x165c220) at kernel/qcoreapplication.cpp:1516
#7  0x00007fe57d303773 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#8  postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#9  0x00007fe57530ea5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fe57530f258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fe57530f429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fe57d303b9f in QEventDispatcherGlib::processEvents (this=0x165db00, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007fe57d89c21e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#14 0x00007fe57d2d33e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#15 0x00007fe57d2d3637 in QEventLoop::exec (this=0x7fff10157710, flags=...) at kernel/qeventloop.cpp:204
#16 0x00007fe57d2d86c7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#17 0x0000000000402bd3 in main (argc=<optimized out>, argv=<optimized out>) at ../../kmail/main.cpp:145

This bug may be a duplicate of or related to bug 293075.

Possible duplicates by query: bug 294698, bug 293075, bug 284552.

Reported using DrKonqi