[Bug 282655] New: [kwin] Crash when viewing planet.kde.org, plasma-desktop AND kwin died?

Shawn Starr shawn.starr at rogers.com
Sat Sep 24 03:57:52 BST 2011 

https://bugs.kde.org/show_bug.cgi?id=282655

           Summary: [kwin] Crash when viewing planet.kde.org,
                    plasma-desktop AND kwin died?
           Product: kde
           Version: unspecified
          Platform: Fedora RPMs
        OS/Version: Linux
            Status: NEW
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: shawn.starr at rogers.com


Version:           unspecified (using KDE 4.7.1) 
OS:                Linux

Application: kwin (4.7.1 (4.7.1))
KDE Platform Version: 4.7.1 (4.7.1)
Qt Version: 4.8.0
Operating System: Linux 2.6.40.3-0.fc15.x86_64 x86_64

-- Information about the crash:
I had attempted to view planet.kde.org in firefox when plasma-desktop and kwin
died, then tried to restart kwin:

$ kwin --replace &
[1] 5111
[spstarr at segfault ~]$ QDBusConnection: session D-Bus connection created before
QCoreApplication. Application may misbehave.
Application::crashHandler() called with signal 11; recent crashes: 1
KCrash: Application 'kwin' crashing...
KCrash: Attempting to start /usr/libexec/kde4/drkonqi from kdeinit
sock_file=/home/spstarr/.kde/socket-segfault.sh0n.net/kdeinit4__0
QDBusConnection: session D-Bus connection created before QCoreApplication.
Application may misbehave.
Application::crashHandler() called with signal 11; recent crashes: 2
KCrash: Application 'kwin' crashing...
KCrash: Attempting to start /usr/libexec/kde4/drkonqi from kdeinit
sock_file=/home/spstarr/.kde/socket-segfault.sh0n.net/kdeinit4__0
QDBusConnection: session D-Bus connection created before QCoreApplication.
Application may misbehave.
Application::crashHandler() called with signal 11; recent crashes: 3
QDBusConnection: session D-Bus connection created before QCoreApplication.
Application may misbehave.
KCrash: Application 'kwin' crashing...
KCrash: Attempting to start /usr/libexec/kde4/drkonqi from kdeinit
sock_file=/home/spstarr/.kde/socket-segfault.sh0n.net/kdeinit4__0
Application::crashHandler() called with signal 11; recent crashes: 4
QDBusConnection: session D-Bus connection created before QCoreApplication.
Application may misbehave.
KCrash: Application 'kwin' crashing...
KCrash: Attempting to start /usr/libexec/kde4/drkonqi from kdeinit
sock_file=/home/spstarr/.kde/socket-segfault.sh0n.net/kdeinit4__0

When I *closed* firefox, I was able to restart kwin and this started with
composite disabled, I was able to reenable this after.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82    T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f74ec1a6880 (LWP 4825))]

Thread 2 (Thread 0x7f74e0c55700 (LWP 4827)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x00000038f1784e52 in QTWTF::TCMalloc_PageHeap::scavengerThread
(this=0x38f1a7e240) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00000038f1784e89 in QTWTF::TCMalloc_PageHeap::runScavengerThread
(context=<optimized out>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00000038d5c07d11 in start_thread (arg=0x7f74e0c55700) at
pthread_create.c:305
#4  0x00000038d50eb66d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f74ec1a6880 (LWP 4825)):
[KCrash Handler]
#6  QFontEngineFT::loadFlags (this=<optimized out>, set=0x0, format=<optimized
out>, flags=<optimized out>, hsubpixel=@0x7fff144652ff,
vfactor=@0x7fff144652f8) at text/qfontengine_ft.cpp:800
#7  0x00000038dd6bb7b4 in QFontEngineFT::getPointInOutline (this=0x1eb8820,
glyph=541, flags=0, point=8, xpos=0x7fff14465488, ypos=0x7fff14465484,
nPoints=0x7fff14465358) at text/qfontengine_ft.cpp:1968
#8  0x00000038dc8dd4dd in Get_Anchor (gpi=<optimized out>, an=0x1ef9610,
glyph_index=<optimized out>, x_value=0x7fff14465488, y_value=0x7fff14465484) at
../3rdparty/harfbuzz/src/harfbuzz-gpos.c:759
#9  0x00000038dc8e1646 in Lookup_MarkBasePos (nesting_level=1,
context_length=65535, flags=<optimized out>, buffer=0x1edbfe0, st=0x1ef1790,
gpi=0x7fff14465510) at ../3rdparty/harfbuzz/src/harfbuzz-gpos.c:2307
#10 GPOS_Do_Glyph_Lookup (gpi=<optimized out>, lookup_index=<optimized out>,
buffer=0x1edbfe0, context_length=65535, nesting_level=1) at
../3rdparty/harfbuzz/src/harfbuzz-gpos.c:5805
#11 0x00000038dc8e64e8 in GPOS_Do_String_Lookup (buffer=0x1edbfe0,
lookup_index=13, gpi=0x7fff14465510) at
../3rdparty/harfbuzz/src/harfbuzz-gpos.c:5899
#12 HB_GPOS_Apply_String (font=<optimized out>, gpos=0x1edc550,
load_flags=<optimized out>, buffer=0x1edbfe0, dvi=<optimized out>,
r2l=<optimized out>) at ../3rdparty/harfbuzz/src/harfbuzz-gpos.c:6070
#13 0x00000038dc8eaf5b in HB_OpenTypePosition (item=0x7fff144658d0,
availableGlyphs=2, doLogClusters=1 '\001') at
../3rdparty/harfbuzz/src/harfbuzz-shaper.cpp:1232
#14 0x00000038dc8ef5f4 in HB_ShapeItem (shaper_item=0x7fff144658d0) at
../3rdparty/harfbuzz/src/harfbuzz-shaper.cpp:1364
#15 0x00000038dd61b2ec in QTextEngine::shapeTextWithHarfbuzz
(this=0x7fff144664c0, item=<optimized out>) at text/qtextengine.cpp:1330
#16 0x00000038dd61bb8b in QTextEngine::shapeText (this=0x7fff144664c0, item=0)
at text/qtextengine.cpp:922
#17 0x00000038dd61bebe in QTextEngine::shape (this=0x7fff144664c0, item=0) at
text/qtextengine.cpp:1437
#18 0x00000038dd62c99e in QTextLine::layout_helper (this=0x7fff14468e10,
maxGlyphs=<optimized out>) at text/qtextlayout.cpp:1732
#19 0x00000038dd51e26c in qt_format_text (fnt=..., _r=<optimized out>,
tf=134218129, option=0x0, str=<optimized out>, brect=0x0, tabstops=0, ta=0x0,
tabarraylen=0, painter=0x7fff144692a0) at painting/qpainter.cpp:8189
#20 0x00000038dd51f2ce in QPainter::drawText (this=0x7fff144692a0, r=...,
flags=<optimized out>, str=<optimized out>, br=0x0) at
painting/qpainter.cpp:6196
#21 0x00007f74e0d32d91 in DarkGlass::DarkGlassClient::paintEvent
(this=0x1d35500, event=0x7fff14469970) at
/home/spstarr/darkglass/src/darkglass.cpp:682
#22 0x00000038ef013b1f in eventFilter (e=0x7fff14469970, this=0x1d35500,
o=<optimized out>) at
/usr/src/debug/kdebase-workspace-4.7.1/kdebase-workspace-4.7.1/kwin/libkdecorations/kcommondecoration.cpp:877
#23 KCommonDecoration::eventFilter (this=0x1d35500, o=0x1d309b0,
e=0x7fff14469970) at
/usr/src/debug/kdebase-workspace-4.7.1/kdebase-workspace-4.7.1/kwin/libkdecorations/kcommondecoration.cpp:868
#24 0x00000038dc977c28 in
QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>,
receiver=0x1d309b0, event=0x7fff14469970) at kernel/qcoreapplication.cpp:963
#25 0x00000038dd3c7d2f in notify_helper (e=0x7fff14469970, receiver=0x1d309b0,
this=0x19cbe70) at kernel/qapplication.cpp:4491
#26 QApplicationPrivate::notify_helper (this=0x19cbe70, receiver=0x1d309b0,
e=0x7fff14469970) at kernel/qapplication.cpp:4467
#27 0x00000038dd3ccbe3 in QApplication::notify (this=0x7fff1446ac80,
receiver=0x1d309b0, e=0x7fff14469970) at kernel/qapplication.cpp:4356
#28 0x00000038e54504c6 in KApplication::notify (this=0x7fff1446ac80,
receiver=0x1d309b0, event=0x7fff14469970) at
/usr/src/debug/kdelibs-4.7.1/kdeui/kernel/kapplication.cpp:311
#29 0x00000038dc977a9c in QCoreApplication::notifyInternal
(this=0x7fff1446ac80, receiver=0x1d309b0, event=0x7fff14469970) at
kernel/qcoreapplication.cpp:853
#30 0x00000038dd413fb0 in sendSpontaneousEvent (event=0x7fff14469970,
receiver=0x1d309b0) at ../../src/corelib/kernel/qcoreapplication.h:234
#31 QWidgetPrivate::drawWidget (this=0x1d35000, pdev=0x1d6c958, rgn=...,
offset=..., flags=14, sharedPainter=0x0, backingStore=0x0) at
kernel/qwidget.cpp:5565
#32 0x00000038dd4167c5 in QWidgetPrivate::render (this=0x1d35000,
target=0x1d6c958, targetOffset=..., sourceRegion=<optimized out>,
renderFlags=..., readyToRender=<optimized out>) at kernel/qwidget.cpp:5701
#33 0x00000038dd416a49 in QWidget::render (this=<optimized out>,
target=<optimized out>, targetOffset=<optimized out>, sourceRegion=<optimized
out>, renderFlags=<optimized out>) at kernel/qwidget.cpp:5153
#34 0x00000038f06eaa45 in KWin::PaintRedirector::performPendingPaint
(this=0x1d6c930) at
/usr/src/debug/kdebase-workspace-4.7.1/kdebase-workspace-4.7.1/kwin/paintredirector.cpp:56
#35 0x00000038f0645d1a in KWin::Client::ensureDecorationPixmapsPainted
(this=0x1d32500) at
/usr/src/debug/kdebase-workspace-4.7.1/kdebase-workspace-4.7.1/kwin/client.cpp:529
#36 0x00000038f0646535 in KWin::Client::repaintDecorationPending
(this=0x1d32500) at
/usr/src/debug/kdebase-workspace-4.7.1/kdebase-workspace-4.7.1/kwin/client.cpp:509
#37 0x00000038dc98b721 in QMetaObject::activate (sender=0x1d6c930, m=<optimized
out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3546
#38 0x00000038dc98b721 in QMetaObject::activate (sender=0x1d6c978, m=<optimized
out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3546
#39 0x00000038dc990669 in QObject::event (this=0x1d6c978, e=<optimized out>) at
kernel/qobject.cpp:1156
#40 0x00000038dd3c7d64 in notify_helper (e=0x7fff1446a860, receiver=0x1d6c978,
this=0x19cbe70) at kernel/qapplication.cpp:4495
#41 QApplicationPrivate::notify_helper (this=0x19cbe70, receiver=0x1d6c978,
e=0x7fff1446a860) at kernel/qapplication.cpp:4467
#42 0x00000038dd3ccbe3 in QApplication::notify (this=0x7fff1446ac80,
receiver=0x1d6c978, e=0x7fff1446a860) at kernel/qapplication.cpp:4356
#43 0x00000038e54504c6 in KApplication::notify (this=0x7fff1446ac80,
receiver=0x1d6c978, event=0x7fff1446a860) at
/usr/src/debug/kdelibs-4.7.1/kdeui/kernel/kapplication.cpp:311
#44 0x00000038dc977a9c in QCoreApplication::notifyInternal
(this=0x7fff1446ac80, receiver=0x1d6c978, event=0x7fff1446a860) at
kernel/qcoreapplication.cpp:853
#45 0x00000038dc9a8532 in sendEvent (event=0x7fff1446a860, receiver=<optimized
out>) at kernel/qcoreapplication.h:231
#46 QTimerInfoList::activateTimers (this=0x19cc868) at
kernel/qeventdispatcher_unix.cpp:611
#47 0x00000038dc9a9014 in QEventDispatcherUNIX::processEvents (this=0x1986ba0,
flags=...) at kernel/qeventdispatcher_unix.cpp:930
#48 0x00000038dd46b578 in QEventDispatcherX11::processEvents (this=0x1986ba0,
flags=...) at kernel/qeventdispatcher_x11.cpp:152
#49 0x00000038dc976bd2 in QEventLoop::processEvents (this=<optimized out>,
flags=...) at kernel/qeventloop.cpp:149
#50 0x00000038dc976e27 in QEventLoop::exec (this=0x7fff1446abc0, flags=...) at
kernel/qeventloop.cpp:204
#51 0x00000038dc97b825 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1125
#52 0x00000038f065b996 in kdemain (argc=<optimized out>, argv=<optimized out>)
at
/usr/src/debug/kdebase-workspace-4.7.1/kdebase-workspace-4.7.1/kwin/main.cpp:517
#53 0x00000038d50215bd in __libc_start_main (main=0x400810 <main(int, char**)>,
argc=3, ubp_av=0x7fff1446b2e8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff1446b2d8) at libc-start.c:226
#54 0x0000000000400841 in _start ()


Reproducible: Didn't try

Steps to Reproduce:
See in Details, however, I really dont know how this triggered.

Actual Results:  
plasma-desktop and kwin both died, kwin refused to restart until firefox was
closed

Expected Results:  
kwin and plasma-desktop would continue with no issue

I am using Fredrik Höglund's Darkglass kwin decoration (source is lost on
internet but I have it available!) but it have not crashed like this before.

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