Bug 251850

Application: kontact (4.4.5)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.6.3
Operating System: Linux 2.6.32-5-686 i686
Distribution: Debian GNU/Linux unstable (sid)

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

I logged in into KDE. As usual ever since I upgraded from 4.4.5 to 4.5.1, Kontact tells me that it seems an instance is already running. That is _not_ the case.

I can either decide not to start Kontact. Everything is "fine" and I can start it manually.

Or, I can decide to start it. In this case, two instances of Kontact come up. A few seconds pass, I close one instance, the other one SEGFAULTs. Yay.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0xb313e710 (LWP 2614))]

Thread 3 (Thread 0xacf1eb70 (LWP 2823)):
#0  0xb77de424 in __kernel_vsyscall ()
#1  0xb4186482 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:179
#2  0xb5f58e64 in __pthread_cond_timedwait (cond=0xa327438, mutex=0xa327420, abstime=0xacf1e2a0) at forward.c:152
#3  0xb6bcff3f in wait (this=0xa15b234, mutex=0xa15b230, time=30000) at thread/qwaitcondition_unix.cpp:85
#4  QWaitCondition::wait (this=0xa15b234, mutex=0xa15b230, time=30000) at thread/qwaitcondition_unix.cpp:159
#5  0xb6bc3f6b in QThreadPoolThread::run (this=0xa306910) at concurrent/qthreadpool.cpp:140
#6  0xb6bcefbe in QThreadPrivate::start (arg=0xa306910) at thread/qthread_unix.cpp:248
#7  0xb4181955 in start_thread (arg=0xacf1eb70) at pthread_create.c:300
#8  0xb5f4be7e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xac5ffb70 (LWP 2824)):
#0  0xb77de424 in __kernel_vsyscall ()
#1  0xb4186482 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:179
#2  0xb5f58e64 in __pthread_cond_timedwait (cond=0xa327438, mutex=0xa327420, abstime=0xac5ff2a0) at forward.c:152
#3  0xb6bcff3f in wait (this=0xa15b234, mutex=0xa15b230, time=30000) at thread/qwaitcondition_unix.cpp:85
#4  QWaitCondition::wait (this=0xa15b234, mutex=0xa15b230, time=30000) at thread/qwaitcondition_unix.cpp:159
#5  0xb6bc3f6b in QThreadPoolThread::run (this=0x9ca4f98) at concurrent/qthreadpool.cpp:140
#6  0xb6bcefbe in QThreadPrivate::start (arg=0x9ca4f98) at thread/qthread_unix.cpp:248
#7  0xb4181955 in start_thread (arg=0xac5ffb70) at pthread_create.c:300
#8  0xb5f4be7e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb313e710 (LWP 2614)):
[KCrash Handler]
#7  0xae744f44 in ?? () from /usr/lib/libkmailprivate.so.4
#8  0xae752ac0 in ?? () from /usr/lib/libkmailprivate.so.4
#9  0xb6cd07ca in QMetaObject::metacall (object=0x98c5cc8, cl=2932081548, idx=57, argv=0xbfa90b48) at kernel/qmetaobject.cpp:237
#10 0xb6cdf1db in QMetaObject::activate (sender=0xa34de98, m=0xaec30c94, local_signal_index=0, argv=0xbfa90b48) at kernel/qobject.cpp:3295
#11 0xae61dbb5 in ?? () from /usr/lib/libkmailprivate.so.4
#12 0xae61e54d in ?? () from /usr/lib/libkmailprivate.so.4
#13 0xae61eed7 in ?? () from /usr/lib/libkmailprivate.so.4
#14 0xb6cd07ca in QMetaObject::metacall (object=0xa34de98, cl=2932081548, idx=13, argv=0xbfa90d08) at kernel/qmetaobject.cpp:237
#15 0xb6cdf1db in QMetaObject::activate (sender=0xa2b5a80, m=0xb7068c88, local_signal_index=3, argv=0xbfa90d08) at kernel/qobject.cpp:3295
#16 0xb6efe3d3 in KJob::result (this=0xa2b5a80, _t1=0xa2b5a80) at ./kjob.moc:194
#17 0xb6efe738 in KJob::emitResult (this=0xa2b5a80) at ../../kdecore/jobs/kjob.cpp:312
#18 0xb55db230 in KIO::SimpleJob::slotFinished (this=0xa2b5a80) at ../../kio/kio/job.cpp:522
#19 0xb55db39e in KIO::ListJob::slotFinished (this=0xa2b5a80) at ../../kio/kio/job.cpp:2553
#20 0xb55df40e in KIO::ListJob::qt_metacall (this=0xa2b5a80, _c=QMetaObject::InvokeMetaMethod, _id=43, _a=0xbfa90f5c) at ./jobclasses.moc:818
#21 0xb6cd07ca in QMetaObject::metacall (object=0xa2b5a80, cl=2932081548, idx=43, argv=0xbfa90f5c) at kernel/qmetaobject.cpp:237
#22 0xb6cdf1db in QMetaObject::activate (sender=0x9f1fa58, m=0xb577ea24, local_signal_index=4, argv=0x0) at kernel/qobject.cpp:3295
#23 0xb568f2b7 in KIO::SlaveInterface::finished (this=0x9f1fa58) at ./slaveinterface.moc:171
#24 0xb56929ad in KIO::SlaveInterface::dispatch (this=0x9f1fa58, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:175
#25 0xb568f773 in KIO::SlaveInterface::dispatch (this=0x9f1fa58) at ../../kio/kio/slaveinterface.cpp:91
#26 0xb5682c08 in KIO::Slave::gotInput (this=0x9f1fa58) at ../../kio/kio/slave.cpp:344
#27 0xb5682e13 in KIO::Slave::qt_metacall (this=0x9f1fa58, _c=QMetaObject::InvokeMetaMethod, _id=30, _a=0xbfa9126c) at ./slave.moc:82
#28 0xb6cd07ca in QMetaObject::metacall (object=0x9f1fa58, cl=2932081548, idx=30, argv=0xbfa9126c) at kernel/qmetaobject.cpp:237
#29 0xb6cdf1db in QMetaObject::activate (sender=0x9f116a0, m=0xb577b5e0, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3295
#30 0xb55a1477 in KIO::Connection::readyRead (this=0x9f116a0) at ./connection.moc:92
#31 0xb55a381e in KIO::ConnectionPrivate::dequeue (this=0x9efe858) at ../../kio/kio/connection.cpp:82
#32 0xb55a394e in KIO::Connection::qt_metacall (this=0x9f116a0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xa2dd600) at ./connection.moc:79
#33 0xb6cd07ca in QMetaObject::metacall (object=0x9f116a0, cl=2932081548, idx=5, argv=0xa2dd600) at kernel/qmetaobject.cpp:237
#34 0xb6cdad56 in QMetaCallEvent::placeMetaCall (this=0x9fd9400, object=0x9f116a0) at kernel/qobject.cpp:561
#35 0xb6cdbe1e in QObject::event (this=0x9f116a0, e=0x9fd9400) at kernel/qobject.cpp:1248
#36 0xb62135cc in QApplicationPrivate::notify_helper (this=0x8b12060, receiver=0x9f116a0, e=0x9fd9400) at kernel/qapplication.cpp:4302
#37 0xb621a15e in QApplication::notify (this=0xbfa91bc4, receiver=0x9f116a0, e=0x9fd9400) at kernel/qapplication.cpp:3706
#38 0xb72656da in KApplication::notify (this=0xbfa91bc4, receiver=0x9f116a0, event=0x9fd9400) at ../../kdeui/kernel/kapplication.cpp:310
#39 0xb6ccb4eb in QCoreApplication::notifyInternal (this=0xbfa91bc4, receiver=0x9f116a0, event=0x9fd9400) at kernel/qcoreapplication.cpp:726
#40 0xb6ccef4c in sendEvent (receiver=0x0, event_type=0, data=0x8af1dd0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8af1dd0) at kernel/qcoreapplication.cpp:1367
#42 0xb6ccf0cd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1260
#43 0xb6cf759f in sendPostedEvents (s=0x8b18070) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#44 postEventSourceDispatch (s=0x8b18070) at kernel/qeventdispatcher_glib.cpp:276
#45 0xb40d2305 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#46 0xb40d5fe8 in ?? () from /lib/libglib-2.0.so.0
#47 0xb40d61c8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#48 0xb6cf7095 in QEventDispatcherGlib::processEvents (this=0x8af1898, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#49 0xb62d1ef5 in QGuiEventDispatcherGlib::processEvents (this=0x8af1898, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#50 0xb6cc9b09 in QEventLoop::processEvents (this=0xbfa91b24, flags=) at kernel/qeventloop.cpp:149
#51 0xb6cc9f5a in QEventLoop::exec (this=0xbfa91b24, flags=...) at kernel/qeventloop.cpp:201
#52 0xb6ccf18f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#53 0xb6213667 in QApplication::exec () at kernel/qapplication.cpp:3581
#54 0x0804b472 in _start ()

Possible duplicates by query: bug 251736, bug 251716, bug 251585, bug 251546, bug 251510.

Reported using DrKonqi