[kde] [Bug 346748] New: Opening Window Settings from title right-click menu, and then closing the Settings dialog quickly, results in a crash

Dave Thompson dwt at outlook.com
Mon Apr 27 03:17:29 BST 2015 

https://bugs.kde.org/show_bug.cgi?id=346748

            Bug ID: 346748
           Summary: Opening Window Settings from title right-click menu,
                    and then closing the Settings dialog quickly, results
                    in a crash
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: dwt at outlook.com

Application: kdeinit5 (5.3.0)

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

-- Information about the crash:
To replicate this:

1. Right click on a titlebar, choose More Actions --> Window Manager Settings.
2. The moment the Settings dialog opens, close it with the titlebar close icon.
3. You will get a crash (I managed to do this twice)

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDE Control Module (kdeinit5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdddf4af780 (LWP 5040))]

Thread 2 (Thread 0x7fddaf42c700 (LWP 5044)):
#0  0x00007fddde1a8ff9 in timerSourcePrepare (source=<optimized out>,
timeout=0x7fddaf42bc54) at kernel/qeventdispatcher_glib.cpp:161
#1  0x00007fdddacd23fd in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdddacd2de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdddacd2fcc in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fddde1a9c6c in QEventDispatcherGlib::processEvents
(this=0x7fdda80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fddde14e3e2 in QEventLoop::exec (this=this at entry=0x7fddaf42be20,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fddddf0db44 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#7  0x00007fddcd664f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fddddf12b0e in QThreadPrivate::start (arg=0x1c9c8d0) at
thread/qthread_unix.cpp:337
#9  0x00007fdddb72f6aa in start_thread (arg=0x7fddaf42c700) at
pthread_create.c:333
#10 0x00007fddddbabeed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fdddf4af780 (LWP 5040)):
[KCrash Handler]
#6  0x00007fddddada267 in __GI_raise (sig=sig at entry=6) at
../sysdeps/unix/sysv/linux/raise.c:55
#7  0x00007fddddadbeca in __GI_abort () at abort.c:89
#8  0x00007fddddb1dc53 in __libc_message (do_abort=do_abort at entry=1,
fmt=fmt at entry=0x7fddddc361a8 "*** Error in `%s': %s: 0x%s ***\n") at
../sysdeps/posix/libc_fatal.c:175
#9  0x00007fddddb25c69 in malloc_printerr (ptr=<optimized out>,
str=0x7fddddc362b8 "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 0x00007fddddb2989c in __GI___libc_free (mem=<optimized out>) at
malloc.c:2950
#12 0x00007fddde17f0bb in QMetaCallEvent::~QMetaCallEvent (this=0x7fddc4005510,
__in_chrg=<optimized out>) at kernel/qobject.cpp:467
#13 0x00007fddde17f109 in QMetaCallEvent::~QMetaCallEvent (this=0x7fddc4005510,
__in_chrg=<optimized out>) at kernel/qobject.cpp:475
#14 0x00007fddde153587 in QCoreApplication::removePostedEvents
(receiver=0xf1cd30, eventType=eventType at entry=0) at
kernel/qcoreapplication.cpp:1629
#15 0x00007fddde17f6fa in QObjectPrivate::~QObjectPrivate (this=0xf1d070,
__in_chrg=<optimized out>) at kernel/qobject.cpp:234
#16 0x00007fddde17f809 in QObjectPrivate::~QObjectPrivate (this=0xf1d070,
__in_chrg=<optimized out>) at kernel/qobject.cpp:245
#17 0x00007fddde18a83b in cleanup (pointer=<optimized out>) at
../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:54
#18 ~QScopedPointer (this=0xf1cd38, __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 0x00007fddcc69f619 in QXcbConnection::~QXcbConnection (this=0xf1cd30,
__in_chrg=<optimized out>) at qxcbconnection.cpp:450
#21 0x00007fddcc6a3d3e 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=0xee2da0, __in_chrg=<optimized
out>) at qxcbintegration.cpp:189
#24 0x00007fddcc6a3e19 in QXcbIntegration::~QXcbIntegration (this=0xee2da0,
__in_chrg=<optimized out>) at qxcbintegration.cpp:190
#25 0x00007fdddee595c0 in QGuiApplicationPrivate::~QGuiApplicationPrivate
(this=0xee2960, __in_chrg=<optimized out>) at kernel/qguiapplication.cpp:1374
#26 0x00007fdddc54d4e9 in QApplicationPrivate::~QApplicationPrivate
(this=0xee2960, __in_chrg=<optimized out>) at kernel/qapplication.cpp:183
#27 0x00007fddde18a83b in cleanup (pointer=<optimized out>) at
../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:54
#28 ~QScopedPointer (this=0x7ffd170bf528, __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 0x00007fdddc54f133 in QApplication::~QApplication (this=0x7ffd170bf520,
__in_chrg=<optimized out>) at kernel/qapplication.cpp:803
#31 0x00007fddccb88480 in ~KCMShell (this=0x7ffd170bf520, __in_chrg=<optimized
out>) at ../../kcmshell/main.h:32
#32 kdemain (_argc=12, _argv=<optimized out>) at ../../kcmshell/main.cpp:305
#33 0x0000000000408716 in launch (argc=argc at entry=14,
_name=_name at entry=0xef1c68 "kcmshell5", args=<optimized out>,
args at entry=0xef1c72 "--icon", cwd=cwd at entry=0x0, envc=envc at entry=0,
envs=<optimized out>, envs at entry=0xef1d26 "", reset_env=false, tty=0x0,
avoid_loops=false, startup_id_str=0x40b711 "0") at
../../../src/kdeinit/kinit.cpp:741
#34 0x000000000040a132 in handle_launcher_request (sock=8,
who=who at entry=0x40b6c6 "launcher") at ../../../src/kdeinit/kinit.cpp:1180
#35 0x000000000040a6ee in handle_requests (waitForPid=waitForPid at entry=0) at
../../../src/kdeinit/kinit.cpp:1369
#36 0x000000000040501b in main (argc=5, argv=<optimized out>) at
../../../src/kdeinit/kinit.cpp:1860

Reported using DrKonqi

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