Application: kdeinit5 ()

Qt Version: 5.4.1
Operating System: Linux 3.19.0-15-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
Setting special window settings (size and pozition) crashes kwin. Tried to set special window settings for Clementine music player (size and pozition: remember).
Not sure if this triagged the crash tho.

-- Backtrace:
Application: kdeinit5 (kdeinit5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  0x00007f5d99347267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#7  0x00007f5d99348eca in __GI_abort () at abort.c:89
#8  0x00007f5d9938ac53 in __libc_message (do_abort=do_abort@entry=1, fmt=fmt@entry=0x7f5d994a31a8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#9  0x00007f5d99392c69 in malloc_printerr (ptr=<optimized out>, str=0x7f5d994a32b8 "double free or corruption (out)", action=1) at malloc.c:4965
#10 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3834
#11 0x00007f5d9939689c in __GI___libc_free (mem=<optimized out>) at malloc.c:2950
#12 0x00007f5d999ec0bb in QMetaCallEvent::~QMetaCallEvent (this=0x7f5d80003800, __in_chrg=<optimized out>) at kernel/qobject.cpp:467
#13 0x00007f5d999ec109 in QMetaCallEvent::~QMetaCallEvent (this=0x7f5d80003800, __in_chrg=<optimized out>) at kernel/qobject.cpp:475
#14 0x00007f5d999c0587 in QCoreApplication::removePostedEvents (receiver=0x1ff0be0, eventType=eventType@entry=0) at kernel/qcoreapplication.cpp:1629
#15 0x00007f5d999ec6fa in QObjectPrivate::~QObjectPrivate (this=0x1ff0f20, __in_chrg=<optimized out>) at kernel/qobject.cpp:234
#16 0x00007f5d999ec809 in QObjectPrivate::~QObjectPrivate (this=0x1ff0f20, __in_chrg=<optimized out>) at kernel/qobject.cpp:245
#17 0x00007f5d999f783b in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:54
#18 ~QScopedPointer (this=0x1ff0be8, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:101
#19 QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:882
#20 0x00007f5d87153619 in QXcbConnection::~QXcbConnection (this=0x1ff0be0, __in_chrg=<optimized out>) at qxcbconnection.cpp:450
#21 0x00007f5d87157d3e in qDeleteAll<QList<QXcbConnection*>::const_iterator> (end=..., begin=...) at ../../../../include/QtCore/../../src/corelib/tools/qalgorithms.h:315
#22 qDeleteAll<QList<QXcbConnection*> > (c=...) at ../../../../include/QtCore/../../src/corelib/tools/qalgorithms.h:323
#23 QXcbIntegration::~QXcbIntegration (this=0x1fdd960, __in_chrg=<optimized out>) at qxcbintegration.cpp:189
#24 0x00007f5d87157e19 in QXcbIntegration::~QXcbIntegration (this=0x1fdd960, __in_chrg=<optimized out>) at qxcbintegration.cpp:190
#25 0x00007f5d9a6c65c0 in QGuiApplicationPrivate::~QGuiApplicationPrivate (this=0x1fdacd0, __in_chrg=<optimized out>) at kernel/qguiapplication.cpp:1374
#26 0x00007f5d97dba4e9 in QApplicationPrivate::~QApplicationPrivate (this=0x1fdacd0, __in_chrg=<optimized out>) at kernel/qapplication.cpp:183
#27 0x00007f5d999f783b in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:54
#28 ~QScopedPointer (this=0x7ffe532533a8, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:101
#29 QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:882
#30 0x00007f5d97dbc133 in QApplication::~QApplication (this=0x7ffe532533a0, __in_chrg=<optimized out>) at kernel/qapplication.cpp:803
#31 0x00007f5d8824bf54 in kdemain (argc=3, argv=<optimized out>) at ../../../kcmkwin/kwinrules/main.cpp:270
#32 0x0000000000408716 in launch (argc=argc@entry=3, _name=_name@entry=0x2000948 "kwin_rules_dialog", args=<optimized out>, args@entry=0x200095a "--wid", cwd=cwd@entry=0x0, envc=envc@entry=0, envs=<optimized out>, envs@entry=0x2000971 "", reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40b710 "0") at ../../../src/kdeinit/kinit.cpp:741
#33 0x000000000040a132 in handle_launcher_request (sock=8, who=who@entry=0x40b6c6 "launcher") at ../../../src/kdeinit/kinit.cpp:1180
#34 0x000000000040a6ee in handle_requests (waitForPid=waitForPid@entry=0) at ../../../src/kdeinit/kinit.cpp:1369
#35 0x000000000040501b in main (argc=5, argv=<optimized out>) at ../../../src/kdeinit/kinit.cpp:1860

Reported using DrKonqi