Bug 310087

Application: kdevelop (4.4.1)
KDE Platform Version: 4.9.3
Qt Version: 4.8.3
Operating System: Linux 3.5.0-18-lowlatency i686
Distribution: Ubuntu 12.10

-- Information about the crash:
Here is how to reproduce the crash

1. start kdevelop in a blank account (i.e. no kdevelop settings stored anywhere)
2. do nothing
3. try to exit kdevelop

The crash can be reproduced every time.

-- Backtrace:
Application: KDevelop (kdevelop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1f84b00 (LWP 20297))]

Thread 7 (Thread 0xadbfab40 (LWP 20298)):
#0  0xb7754424 in __kernel_vsyscall ()
#1  0xb586ed13 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:236
#2  0xb5b0f6a4 in __pthread_cond_timedwait (cond=0x8eccaf8, mutex=0x8eccae0, abstime=0xadbfa248) at forward.c:152
#3  0xb67defad in wait (time=1000, this=0x8eccae0) at thread/qwaitcondition_unix.cpp:84
#4  QWaitCondition::wait (this=0x8ee14e4, mutex=0x8ee14e8, time=1000) at thread/qwaitcondition_unix.cpp:158
#5  0xb521681a in ?? () from /usr/lib/libkdevplatformlanguage.so.6
#6  0xb67dea58 in QThreadPrivate::start (arg=0x8ee14d8) at thread/qthread_unix.cpp:338
#7  0xb586ad4c in start_thread (arg=0xadbfab40) at pthread_create.c:308
#8  0xb5b01d3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 6 (Thread 0xaaf01b40 (LWP 20301)):
#0  0xb586cdc8 in __pthread_mutex_lock (mutex=0xaa600550) at pthread_mutex_lock.c:92
#1  0xb5b0f864 in pthread_mutex_lock (mutex=0xaa600550) at forward.c:182
#2  0xb465eed0 in g_mutex_lock (mutex=mutex@entry=0xaa6004e0) at /build/buildd/glib2.0-2.34.1/./glib/gthread-posix.c:208
#3  0xb461d3f6 in g_main_context_prepare (context=context@entry=0xaa6004e0, priority=priority@entry=0xaaf010f8) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:2929
#4  0xb461dbff in g_main_context_iterate (context=context@entry=0xaa6004e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3270
#5  0xb461de61 in g_main_context_iteration (context=0xaa6004e0, may_block=1) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3351
#6  0xb692399f in QEventDispatcherGlib::processEvents (this=0xaa600468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb68f026c in QEventLoop::processEvents (this=this@entry=0xaaf01228, flags=...) at kernel/qeventloop.cpp:149
#8  0xb68f0561 in QEventLoop::exec (this=0xaaf01228, flags=...) at kernel/qeventloop.cpp:204
#9  0xb67db66c in QThread::exec (this=0x8f4ad38) at thread/qthread.cpp:501
#10 0xb68ce7bd in QInotifyFileSystemWatcherEngine::run (this=0x8f4ad38) at io/qfilesystemwatcher_inotify.cpp:248
#11 0xb67dea58 in QThreadPrivate::start (arg=0x8f4ad38) at thread/qthread_unix.cpp:338
#12 0xb586ad4c in start_thread (arg=0xaaf01b40) at pthread_create.c:308
#13 0xb5b01d3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 5 (Thread 0xaa55ab40 (LWP 20302)):
#0  0xb45ecd2b in __x86.get_pc_thunk.bx () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb465ebec in g_mutex_get_impl (mutex=0x915cad8) at /build/buildd/glib2.0-2.34.1/./glib/gthread-posix.c:118
#2  0xb465eec8 in g_mutex_lock (mutex=mutex@entry=0x915cad8) at /build/buildd/glib2.0-2.34.1/./glib/gthread-posix.c:208
#3  0xb461d0a2 in g_main_context_release (context=context@entry=0x915cad8) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:2810
#4  0xb461dca8 in g_main_context_iterate (context=context@entry=0x915cad8, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3292
#5  0xb461de61 in g_main_context_iteration (context=0x915cad8, may_block=1) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3351
#6  0xb692399f in QEventDispatcherGlib::processEvents (this=0x915c628, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb68f026c in QEventLoop::processEvents (this=this@entry=0xaa55a228, flags=...) at kernel/qeventloop.cpp:149
#8  0xb68f0561 in QEventLoop::exec (this=0xaa55a228, flags=...) at kernel/qeventloop.cpp:204
#9  0xb67db66c in QThread::exec (this=0x915a640) at thread/qthread.cpp:501
#10 0xb68ce7bd in QInotifyFileSystemWatcherEngine::run (this=0x915a640) at io/qfilesystemwatcher_inotify.cpp:248
#11 0xb67dea58 in QThreadPrivate::start (arg=0x915a640) at thread/qthread_unix.cpp:338
#12 0xb586ad4c in start_thread (arg=0xaa55ab40) at pthread_create.c:308
#13 0xb5b01d3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 4 (Thread 0xa9b06b40 (LWP 20307)):
#0  0xb7754424 in __kernel_vsyscall ()
#1  0xb586e96b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb5b0f64c in __pthread_cond_wait (cond=0xb50ce670 <QTWTF::pageheap_memory+20720>, mutex=0xb50ce658 <QTWTF::pageheap_memory+20696>) at forward.c:139
#3  0xb4fbc1cd in QTWTF::TCMalloc_PageHeap::scavengerThread (this=this@entry=0xb50c9580 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0xb4fbc1ff in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xb50c9580 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0xb586ad4c in start_thread (arg=0xa9b06b40) at pthread_create.c:308
#6  0xb5b01d3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 3 (Thread 0xa853fb40 (LWP 20370)):
#0  0xb7754424 in __kernel_vsyscall ()
#1  0xb586e96b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb5b0f64c in __pthread_cond_wait (cond=0xb413b470 <WTF::pageheap_memory+20720>, mutex=0xb413b458 <WTF::pageheap_memory+20696>) at forward.c:139
#3  0xb39e40e9 in WTF::TCMalloc_PageHeap::scavengerThread (this=this@entry=0xb4136380 <WTF::pageheap_memory>) at wtf/FastMalloc.cpp:2499
#4  0xb39e41df in WTF::TCMalloc_PageHeap::runScavengerThread (context=0xb4136380 <WTF::pageheap_memory>) at wtf/FastMalloc.cpp:1622
#5  0xb586ad4c in start_thread (arg=0xa853fb40) at pthread_create.c:308
#6  0xb5b01d3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xa8d40b40 (LWP 20371)):
#0  0xb461d700 in g_main_context_check (context=context@entry=0xa765a370, max_priority=2147483647, fds=fds@entry=0xa23362d0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3142
#1  0xb461dc92 in g_main_context_iterate (context=context@entry=0xa765a370, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3287
#2  0xb461de61 in g_main_context_iteration (context=0xa765a370, may_block=1) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3351
#3  0xb692399f in QEventDispatcherGlib::processEvents (this=0xa765e158, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0xb68f026c in QEventLoop::processEvents (this=this@entry=0xa8d40258, flags=...) at kernel/qeventloop.cpp:149
#5  0xb68f0561 in QEventLoop::exec (this=0xa8d40258, flags=...) at kernel/qeventloop.cpp:204
#6  0xb67db66c in QThread::exec (this=this@entry=0x8bb6298) at thread/qthread.cpp:501
#7  0xb67db7cb in QThread::run (this=0x8bb6298) at thread/qthread.cpp:568
#8  0xb67dea58 in QThreadPrivate::start (arg=0x8bb6298) at thread/qthread_unix.cpp:338
#9  0xb586ad4c in start_thread (arg=0xa8d40b40) at pthread_create.c:308
#10 0xb5b01d3e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb1f84b00 (LWP 20297)):
[KCrash Handler]
#7  0xb70816ce in QDeclarativeItem::~QDeclarativeItem (this=0x93bb260, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#8  0xb7040124 in ~QDeclarativeElement (this=0x93bb260, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x93bb260, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#10 0xb6905783 in qDeleteInEventHandler (o=o@entry=0x93bb260) at kernel/qobject.cpp:4277
#11 0xb6907f10 in QObject::event (this=0x93bb260, e=0x9344e48) at kernel/qobject.cpp:1176
#12 0xb707bad4 in QDeclarativeItem::event (this=0x93bb260, ev=0x9344e48) at graphicsitems/qdeclarativeitem.cpp:3748
#13 0xb5de239c in QApplicationPrivate::notify_helper (this=0x8aebac8, receiver=0x93bb260, e=0x9344e48) at kernel/qapplication.cpp:4562
#14 0xb5de6daf in QApplication::notify (this=0x9344e48, receiver=0x93bb260, e=0x9344e48) at kernel/qapplication.cpp:3944
#15 0xb6cb6e91 in KApplication::notify (this=0xbfb536d8, receiver=0x93bb260, event=0x9344e48) at ../../kdeui/kernel/kapplication.cpp:311
#16 0xb68f178e in QCoreApplication::notifyInternal (this=0xbfb536d8, receiver=0x93bb260, event=0x9344e48) at kernel/qcoreapplication.cpp:915
#17 0xb68f597d in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#18 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x8abe370) at kernel/qcoreapplication.cpp:1539
#19 0xb68f5c0c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=52) at kernel/qcoreapplication.cpp:1432
#20 0xb68f5ced in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1194
#21 0xb5ddffc4 in QApplication::exec () at kernel/qapplication.cpp:3823
#22 0x08055352 in ?? ()
#23 0xb5a2c4d3 in __libc_start_main (main=0x804f4d0, argc=1, ubp_av=0xbfb53914, init=0x805abb0 <__libc_csu_init>, fini=0x805ac20 <__libc_csu_fini>, rtld_fini=0xb7764270 <_dl_fini>, stack_end=0xbfb5390c) at libc-start.c:226
#24 0x08055ab1 in _start ()

Possible duplicates by query: bug 307172.

Reported using DrKonqi