Application: kwin (4.11.3)
KDE Platform Version: 4.12.0
Qt Version: 4.8.4
Operating System: Linux 3.11.0-15-generic x86_64
Distribution: Ubuntu 13.10

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

I was using synaptic on a remote computer over ssh.
This bug is very similar to bug #323701 and bug #327287.
I report this one now because it is with KDE 4.12.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8a1ec8b7c0 (LWP 4743))]

Thread 2 (Thread 0x7f8a01727700 (LWP 20941)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8a1d66206b in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f8a1d95ff00 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f8a1d6620a9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f8a16011f6e in start_thread (arg=0x7f8a01727700) at pthread_create.c:311
#4  0x00007f8a1e4709cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f8a1ec8b7c0 (LWP 4743)):
[KCrash Handler]
#6  0x00007f8a18854cc1 in QObjectPrivate::~QObjectPrivate (this=0x2734f00, __in_chrg=<optimized out>) at kernel/qobject.cpp:175
#7  0x00007f8a18854e59 in QObjectPrivate::~QObjectPrivate (this=0x2734f00, __in_chrg=<optimized out>) at kernel/qobject.cpp:185
#8  0x00007f8a188568e5 in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#9  ~QScopedPointer (this=0x1f6a898, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:100
#10 QObject::~QObject (this=0x1f6a890, __in_chrg=<optimized out>) at kernel/qobject.cpp:816
#11 0x00007f8a1e7a9661 in ~ClientMachine (this=0x1f6a890, __in_chrg=<optimized out>) at ../../kwin/client_machine.cpp:171
#12 KWin::ClientMachine::~ClientMachine (this=0x1f6a890, __in_chrg=<optimized out>) at ../../kwin/client_machine.cpp:173
#13 0x00007f8a18854308 in QObjectPrivate::deleteChildren (this=this@entry=0x2426e20) at kernel/qobject.cpp:1907
#14 0x00007f8a188568af in QObject::~QObject (this=0x25381e0, __in_chrg=<optimized out>) at kernel/qobject.cpp:926
#15 0x00007f8a1e8255e9 in KWin::Deleted::~Deleted (this=0x25381e0, __in_chrg=<optimized out>) at ../../kwin/deleted.cpp:48
#16 0x00007f8a1e8257a9 in KWin::Deleted::~Deleted (this=0x25381e0, __in_chrg=<optimized out>) at ../../kwin/deleted.cpp:55
#17 0x00007f8a18855e08 in QObject::event (this=0x25381e0, e=<optimized out>) at kernel/qobject.cpp:1175
#18 0x00007f8a17bdadfc in QApplicationPrivate::notify_helper (this=this@entry=0x1d30b90, receiver=receiver@entry=0x25381e0, e=e@entry=0x256d560) at kernel/qapplication.cpp:4567
#19 0x00007f8a17be1470 in QApplication::notify (this=this@entry=0x7fffcfd81d50, receiver=receiver@entry=0x25381e0, e=e@entry=0x256d560) at kernel/qapplication.cpp:4353
#20 0x00007f8a1d0b6c6a in KApplication::notify (this=0x7fffcfd81d50, receiver=0x25381e0, event=0x256d560) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x00007f8a1883d8bd in QCoreApplication::notifyInternal (this=0x7fffcfd81d50, receiver=receiver@entry=0x25381e0, event=event@entry=0x256d560) at kernel/qcoreapplication.cpp:946
#22 0x00007f8a18840e1f in sendEvent (event=0x256d560, receiver=0x25381e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1c9e1f0) at kernel/qcoreapplication.cpp:1570
#24 0x00007f8a188412c3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#25 0x00007f8a17c7d14c in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#26 QEventDispatcherX11::processEvents (this=0x1d30b20, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#27 0x00007f8a1883c5ef in QEventLoop::processEvents (this=this@entry=0x7fffcfd81bc0, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f8a1883c8e5 in QEventLoop::exec (this=this@entry=0x7fffcfd81bc0, flags=...) at kernel/qeventloop.cpp:204
#29 0x00007f8a18841e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#30 0x00007f8a17bd934c in QApplication::exec () at kernel/qapplication.cpp:3828
#31 0x00007f8a1e7b9956 in kdemain (argc=3, argv=0x7fffcfd81e98) at ../../kwin/main.cpp:597
#32 0x00007f8a1e397de5 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=3, ubp_av=0x7fffcfd81e98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcfd81e88) at libc-start.c:260
#33 0x00000000004006fe in _start ()

Possible duplicates by query: bug 308202.

Reported using DrKonqi