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List:       kde-bugs-dist
Subject:    [kwin] [Bug 323701] kwin crash while using virt-manager
From:       Laurent Bonnaud <laurent.bonnaud () inpg ! fr>
Date:       2013-11-10 11:23:43
Message-ID: bug-323701-17878-oYwPG6yS0E () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=323701

Laurent Bonnaud <laurent.bonnaud@inpg.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|WAITINGFORINFO              |---

--- Comment #3 from Laurent Bonnaud <laurent.bonnaud@inpg.fr> ---
Sorry for the delay answering your questions.  Here are answers:

 - kwin was running on my laptop
 - virt-manager was running on an ssh gateway (over ssh therefore)

Today I managed to reproduce a similar bug while doing some other operations in
virt-manager in the same context (that is over ssh).  This is with KDE 4.11.3. 
Note that this bug is very similar to bug #327287.

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 0x7f7b422707c0 (LWP 21646))]

Thread 4 (Thread 0x7f7b1ffff700 (LWP 21651)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7b40c4706b in QTWTF::TCMalloc_PageHeap::scavengerThread
(this=0x7f7b40f44f00 <QTWTF::pageheap_memory>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f7b40c470a9 in QTWTF::TCMalloc_PageHeap::runScavengerThread
(context=<optimized out>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f7b395f9f6e in start_thread (arg=0x7f7b1ffff700) at
pthread_create.c:311
#4  0x00007f7b41a559cd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f7b25165700 (LWP 22103)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f7b3bd263e4 in wait (time=30000, this=0x17861d0) at
thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=mutex@entry=0x178b278,
time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f7b3bd198a5 in QThreadPoolThread::run (this=0x2b4d310) at
concurrent/qthreadpool.cpp:141
#4  0x00007f7b3bd25f2f in QThreadPrivate::start (arg=0x2b4d310) at
thread/qthread_unix.cpp:338
#5  0x00007f7b395f9f6e in start_thread (arg=0x7f7b25165700) at
pthread_create.c:311
#6  0x00007f7b41a559cd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f7a9e33f700 (LWP 22104)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f7b3bd263e4 in wait (time=30000, this=0x17861d0) at
thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=mutex@entry=0x178b278,
time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f7b3bd198a5 in QThreadPoolThread::run (this=0x1783000) at
concurrent/qthreadpool.cpp:141
#4  0x00007f7b3bd25f2f in QThreadPrivate::start (arg=0x1783000) at
thread/qthread_unix.cpp:338
#5  0x00007f7b395f9f6e in start_thread (arg=0x7f7a9e33f700) at
pthread_create.c:311
#6  0x00007f7b41a559cd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f7b422707c0 (LWP 21646)):
[KCrash Handler]
#6  QObject::~QObject (this=0x2a285e0, __in_chrg=<optimized out>) at
kernel/qobject.cpp:915
#7  0x00007f7b41de9973 in ~Unmanaged (this=0x2a285e0, __in_chrg=<optimized
out>) at ../../kwin/unmanaged.cpp:44
#8  KWin::Unmanaged::~Unmanaged (this=0x2a285e0, __in_chrg=<optimized out>) at
../../kwin/unmanaged.cpp:46
#9  0x00007f7b41de9ccd in deleteUnmanaged (c=0x2a285e0) at
../../kwin/unmanaged.cpp:114
#10 KWin::Unmanaged::release (this=this@entry=0x2a285e0,
on_shutdown=on_shutdown@entry=false) at ../../kwin/unmanaged.cpp:109
#11 0x00007f7b41da8953 in unmapNotifyEvent (this=0x2a285e0) at
../../kwin/events.cpp:1512
#12 KWin::Unmanaged::windowEvent (this=0x2a285e0, e=e@entry=0x7fffef09a210) at
../../kwin/events.cpp:1480
#13 0x00007f7b41da9b85 in KWin::Workspace::workspaceEvent (this=0x1782e20,
e=e@entry=0x7fffef09a210) at ../../kwin/events.cpp:167
#14 0x00007f7b41d9da70 in KWin::Application::x11EventFilter
(this=0x7fffef09a600, e=0x7fffef09a210) at ../../kwin/main.cpp:422
#15 0x00007f7b3b22b42c in qt_x11EventFilter (ev=0x7fffef09a210) at
kernel/qapplication_x11.cpp:441
#16 0x00007f7b3b23bc50 in QApplication::x11ProcessEvent (this=0x7fffef09a600,
event=event@entry=0x7fffef09a210) at kernel/qapplication_x11.cpp:3458
#17 0x00007f7b3b265290 in QEventDispatcherX11::processEvents (this=0x158d290,
flags=...) at kernel/qeventdispatcher_x11.cpp:132
#18 0x00007f7b3be245ef in QEventLoop::processEvents
(this=this@entry=0x7fffef09a470, flags=...) at kernel/qeventloop.cpp:149
#19 0x00007f7b3be248e5 in QEventLoop::exec (this=this@entry=0x7fffef09a470,
flags=...) at kernel/qeventloop.cpp:204
#20 0x00007f7b3be29e5b in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1218
#21 0x00007f7b3b1c134c in QApplication::exec () at kernel/qapplication.cpp:3828
#22 0x00007f7b41d9e956 in kdemain (argc=3, argv=0x7fffef09a748) at
../../kwin/main.cpp:597
#23 0x00007f7b4197cde5 in __libc_start_main (main=0x4006d0 <main(int, char**)>,
argc=3, ubp_av=0x7fffef09a748, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffef09a738) at libc-start.c:260
#24 0x00000000004006fe in _start ()

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