https://bugs.kde.org/show_bug.cgi?id=361231

--- Comment #12 from cameron...@poczta.fm ---

Thread 5 (Thread 0x7fa701f2e700 (LWP 1584)):
#0  0x00007fa719c4bbbd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa717572422 in _xcb_conn_wait (__timeout=-1, __nfds=1,
__fds=0x7fa701f2dcc0) at /usr/include/bits/poll2.h:46
        ret = <optimized out>
        fd = {fd = 3, events = 1, revents = 0}
#2  0x00007fa717572422 in _xcb_conn_wait (c=c@entry=0x1f8f8e0,
cond=cond@entry=0x1f8f920, vector=vector@entry=0x0, count=count@entry=0x0) at
xcb_conn.c:459
        ret = <optimized out>
        fd = {fd = 3, events = 1, revents = 0}
#3  0x00007fa71757400f in xcb_wait_for_event (c=0x1f8f8e0) at xcb_in.c:693
        ret = 0x0
#4  0x00007fa7027df3c9 in QXcbEventReader::run() (this=0x1f9a280)
    at qxcbconnection.cpp:1229
        event = <optimized out>
#5  0x00007fa71783232f in QThreadPrivate::start(void*) (arg=0x1f9a280)
    at thread/qthread_unix.cpp:331
        __clframe = 
          {__cancel_routine = 0x7fa717831540 <QThreadPrivate::finish(void*)>,
__cancel_arg = 0x1f9a280, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x1f9a280
        data = <optimized out>
        objectName = 
          {static null = {<No data fields>}, d = 0x7fa717ac4ce0
<QArrayData::shared_null>}
#6  0x00007fa7192770a4 in start_thread (arg=0x7fa701f2e700)
    at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fa701f2e700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {140355268962048,
-7484308170885967918, 0, 140355675914240, 7, 140355268962048,
7452444436602671058, 7452427216670150610}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fa719c53fed in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fa6f5dee700 (LWP 1612)):
#0  0x00007fa719c4d253 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa717a61179 in qt_safe_select(int, fd_set*, fd_set*, fd_set*,
timespec const*) (nfds=12, fdread=0x7fa6e8000a78, fdwrite=0x7fa6e8000d08,
fdexcept=0x7fa6e8000f98, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
        ret = <optimized out>
#2  0x00007fa717a62af5 in
QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>,
timespec*) (this=this@entry=0x7fa6e80008e0, flags=..., 
    flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
        highest = <optimized out>
        wakeUpFd = <optimized out>
        nsel = <optimized out>
        nevents = <optimized out>
#3  0x00007fa717a62f3b in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7fa6e80008c0, flags=...)
    at kernel/qeventdispatcher_unix.cpp:607
        tm = <optimized out>
        wait_tm = {tv_sec = 0, tv_nsec = 0}
        d = 0x7fa6e80008e0
        nevents = 0
        canWait = <optimized out>
#4  0x00007fa717a0bd53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fa6f5deddb0, flags=..., flags@entry=...)
    at kernel/qeventloop.cpp:204
        locker = {val = 34843456}
        ref = 
          {d = 0x7fa6e80012d0, locker = @0x7fa6f5dedd30, exceptionCaught =
true}
        d = 0x7fa6e80012d0
#5  0x00007fa71782d61a in QThread::exec() (this=this@entry=0x21a9f80)
    at thread/qthread.cpp:503
        d = 0x213aad0
        locker = {val = 34843456}
        eventLoop = 
              {<QObject> = {_vptr.QObject = 0x7fa717e5c450 <vtable for
QEventLoop+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata =
0x7fa717b69720 <qt_meta_stringdata_QObject>, data = 0x7fa717b69600
<qt_meta_data_QObject>, static_metacall = 0x7fa717a46720
<QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x7fa6e80012d0},
static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fa717bb3700
<qt_meta_stringdata_Qt>, data = 0x7fa717bb0d00 <qt_meta_data_Qt>,
static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static
staticMetaObject = {d = {superdata = 0x7fa717e58da0
<QObject::staticMetaObject>, stringdata = 0x7fa717bc8700
<qt_meta_stringdata_QEventLoop>, data = 0x7fa717bc86a0
<qt_meta_data_QEventLoop>, static_metacall = 0x7fa717abf2b0
<QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#6  0x00007fa711cc7df8 in QQmlThreadPrivate::run() (this=0x21a9f80)
    at
/usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007fa71783232f in QThreadPrivate::start(void*) (arg=0x21a9f80)
    at thread/qthread_unix.cpp:331
        __clframe = 
          {__cancel_routine = 0x7fa717831540 <QThreadPrivate::finish(void*)>,
__cancel_arg = 0x21a9f80, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x21a9f80
        data = <optimized out>
        objectName = 
          {static null = {<No data fields>}, d = 0x7fa711d755e0
<QQmlThreadPrivate::QQmlThreadPrivate(QQmlThread*)::{lambda()#1}::operator()()
const::qstring_literal>}
#8  0x00007fa7192770a4 in start_thread (arg=0x7fa6f5dee700)
    at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fa6f5dee700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {140355066324736,
-7484308170885967918, 0, 140355675914240, 7, 140355066324736,
7453333013796605906, 7452427216670150610}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007fa719c53fed in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fa6e6ffd700 (LWP 1633)):
#0  0x00007fa71927b03f in pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa7167aa86b in QTWTF::TCMalloc_PageHeap::scavengerThread()
(this=0x7fa716a91ea0 <QTWTF::pageheap_memory>)
    at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fa7167aa899 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*)
(context=<optimized out>)
    at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fa7192770a4 in start_thread (arg=0x7fa6e6ffd700)
    at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fa6e6ffd700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {140354816825088,
-7484308170885967918, 0, 140355675914240, 32769, 140354816825088,
7453361317094215634, 7452427216670150610}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#4  0x00007fa719c53fed in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fa6e4ca4700 (LWP 1721)):
#0  0x00007fa719c4d253 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa717a61179 in qt_safe_select(int, fd_set*, fd_set*, fd_set*,
timespec const*) (nfds=20, fdread=0x7fa658000a78, fdwrite=0x7fa658000d08,
fdexcept=0x7fa658000f98, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
        ret = <optimized out>
#2  0x00007fa717a62af5 in
QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>,
timespec*) (this=this@entry=0x7fa6580008e0, flags=..., 
    flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
        highest = <optimized out>
        wakeUpFd = <optimized out>
        nsel = <optimized out>
        nevents = <optimized out>
#3  0x00007fa717a62f3b in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7fa6580008c0, flags=...)
    at kernel/qeventdispatcher_unix.cpp:607
        tm = <optimized out>
        wait_tm = {tv_sec = 0, tv_nsec = 0}
        d = 0x7fa6580008e0
        nevents = 0
        canWait = <optimized out>
#4  0x00007fa717a0bd53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fa6e4ca3db0, flags=..., flags@entry=...)
    at kernel/qeventloop.cpp:204
        locker = {val = 42890448}
        ref = 
          {d = 0x7fa6580012d0, locker = @0x7fa6e4ca3d30, exceptionCaught =
true}
        d = 0x7fa6580012d0
#5  0x00007fa71782d61a in QThread::exec() (this=this@entry=0x28e73d0)
    at thread/qthread.cpp:503
        d = 0x28e7460
        locker = {val = 42890448}
        eventLoop = 
              {<QObject> = {_vptr.QObject = 0x7fa717e5c450 <vtable for
QEventLoop+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata =
0x7fa717b69720 <qt_meta_stringdata_QObject>, data = 0x7fa717b69600
<qt_meta_data_QObject>, static_metacall = 0x7fa717a46720
<QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x7fa6580012d0},
static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fa717bb3700
<qt_meta_stringdata_Qt>, data = 0x7fa717bb0d00 <qt_meta_data_Qt>,
static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static
staticMetaObject = {d = {superdata = 0x7fa717e58da0
<QObject::staticMetaObject>, stringdata = 0x7fa717bc8700
<qt_meta_stringdata_QEventLoop>, data = 0x7fa717bc86a0
<qt_meta_data_QEventLoop>, static_metacall = 0x7fa717abf2b0
<QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#6  0x00007fa711cc7df8 in QQmlThreadPrivate::run() (this=0x28e73d0)
    at
/usr/src/debug/qtdeclarative-opensource-src-5.5.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007fa71783232f in QThreadPrivate::start(void*) (arg=0x28e73d0)
    at thread/qthread_unix.cpp:331
        __clframe = 
          {__cancel_routine = 0x7fa717831540 <QThreadPrivate::finish(void*)>,
__cancel_arg = 0x28e73d0, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x28e73d0
        data = <optimized out>
        objectName = 
          {static null = {<No data fields>}, d = 0x7fa711d755e0
<QQmlThreadPrivate::QQmlThreadPrivate(QQmlThread*)::{lambda()#1}::operator()()
const::qstring_literal>}
#8  0x00007fa7192770a4 in start_thread (arg=0x7fa6e4ca4700)
    at pthread_create.c:309
        __res = <optimized out>
        pd = 0x7fa6e4ca4700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {140354779760384,
-7484308170885967918, 0, 140355675914240, 7, 140354779760384,
7453365897139965906, 7452427216670150610}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007fa719c53fed in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fa71a2db800 (LWP 1563)):
#0  0x00007fa6ee333c69 in  () at /usr/lib64/dri/fglrx_dri.so
#1  0x00007fa6eda1e908 in  () at /usr/lib64/dri/fglrx_dri.so
#2  0x00007fa6eda1ebb2 in  () at /usr/lib64/dri/fglrx_dri.so
#3  0x00007fa6ede50ce3 in  () at /usr/lib64/dri/fglrx_dri.so
#4  0x00007fa716ae15a2 in KWin::BlurEffect::doCachedBlur(KWin::EffectWindow*,
QRegion const&, float) (this=this@entry=
    0x2766b60, w=w@entry=0x49c1780, region=..., opacity=1)
    at /usr/src/debug/kwin-5.5.5/effects/blur/blur.cpp:633
        updateRect = <optimized out>
        screen = {x1 = 0, y1 = 0, x2 = 1365, y2 = 767}
        damagedRegion = 
            {d = 0x3967be0, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        validUpdate = 
            {d = 0x3967be0, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        horizontal = 
            {d = 0x4a22140, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        verticalCount = 18
        blurredRegion = 
            {d = 0x49ee550, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        expanded = 
            {d = 0x35ea830, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        r = 
          {x1 = <optimized out>, y1 = <optimized out>, x2 = <optimized out>, y2
= 731}
        targetTexture = 
            {_vptr.GLTexture = 0x7fa712d596d0 <vtable for KWin::GLTexture+16>,
d_ptr = {d = 0x43109d0}}
        modelViewProjectionMatrix = 
          {m = {{1, 0, 0, 0}, {0, 1, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1}},
flagBits = 0}
        verticalOffset = 12
        screenSize = <optimized out>
        vertical = 
            {d = 0x38617e0, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        horizontalCount = 12
        vbo = 0x26faed0
        it = <optimized out>
        textureMatrix = 
          {m = {{1, 0, 0, 0}, {0, 1, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1}},
flagBits = 0}
        updateBackground = 
            {d = 0x4a22140, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        horizontalOffset = 0
#5  0x00007fa716ae2474 in KWin::BlurEffect::drawWindow(KWin::EffectWindow*,
int, QRegion, KWin::WindowPaintData&) (this=this@entry=0x2766b60,
w=w@entry=0x49c1780, mask=mask@entry=9, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/effects/blur/blur.cpp:442
        shape = 
            {d = 0x385e300, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        translated = <optimized out>
        screen = {x1 = 0, y1 = 0, x2 = 1365, y2 = 767}
#6  0x00007fa719837421 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) (this=
    0x27a17f0, w=w@entry=0x49c1780, mask=mask@entry=9, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/effects.cpp:499
#7  0x00007fa7198109c1 in
KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion,
KWin::WindowPaintData&) (this=<optimized out>, w=w@entry=0x49c1780,
mask=mask@entry=9, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/scene.cpp:606
#8  0x00007fa71983738a in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) (this=0x27a17f0, w=w@entry=0x49c1780,
mask=mask@entry=9, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/effects.cpp:465
        data = 
          @0x7ffec3c25cc0: {<KWin::PaintData> = {_vptr.PaintData =
0x7fa7171dc110 <vtable for KWin::WindowPaintData+16>, d = 0x3d24ba0}, quads =
{<QList<KWin::WindowQuad>> = {<QListSpecialMethods<KWin::WindowQuad>> = {<No
data fields>}, {p = {static shared_null = {ref = {atomic = {_q_value = -1}},
alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x49deb80}, d = 0x49deb80}},
<No data fields>}, shader = 0x0, d = 0x3d3df60}
        region = 
            {d = 0x7ffec3c25b40, static shared_empty = {ref = {atomic =
{_q_value = -1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        mask = 9
        w = 0x49c1780
        this = 0x27a17f0
#9  0x00007fa716fbe301 in KWin::Effect::paintWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) (this=this@entry=0x27d7ae0,
w=w@entry=0x49c1780, mask=mask@entry=9, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/libkwineffects/kwineffects.cpp:552
#10 0x00007fa719837341 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) (this=0x27a17f0, w=w@entry=0x49c1780,
mask=mask@entry=9, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/effects.cpp:462
#11 0x00007fa716fbe301 in KWin::Effect::paintWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) (this=this@entry=0x2766b60,
w=w@entry=0x49c1780, mask=mask@entry=9, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/libkwineffects/kwineffects.cpp:552
#12 0x00007fa719837341 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) (this=0x27a17f0, w=0x49c1780, mask=mask@entry=9,
region=..., data=...) at /usr/src/debug/kwin-5.5.5/effects.cpp:462
#13 0x00007fa7198154c8 in KWin::Scene::paintWindow(KWin::Scene::Window*, int,
QRegion, KWin::WindowQuadList) (this=this@entry=0x2707ec0, w=0x49d7750, mask=9,
region=..., quads=...) at /usr/src/debug/kwin-5.5.5/scene.cpp:478
        data = 
          {<KWin::PaintData> = {_vptr.PaintData = 0x7fa7171dc110 <vtable for
KWin::WindowPaintData+16>, d = 0x3d24ba0}, quads = {<QList<KWin::WindowQuad>> =
{<QListSpecialMethods<KWin::WindowQuad>> = {<No data fields>}, {p = {static
shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0,
array = {0x0}}, d = 0x49deb80}, d = 0x49deb80}}, <No data fields>}, shader =
0x0, d = 0x3d3df60}
#14 0x00007fa719813584 in KWin::Scene::paintSimpleScreen(int, QRegion)
(this=this@entry=0x2707ec0, orig_mask=orig_mask@entry=8, region=...)
    at /usr/src/debug/kwin-5.5.5/scene.cpp:381
        data = 0x2df3258
        i = 6
        repaintClip = 
            {d = 0x4dacdc0, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        fullRepaint = false
        paintedArea = 
            {d = 0x2f2e2a0, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        phase2data = 
            {<QListSpecialMethods<QPair<KWin::Scene::Window*,
KWin::Scene::Phase2Data> >> = {<No data fields>}, {p = {static shared_null =
{ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array =
{0x0}}, d = 0x397c040}, d = 0x397c040}}
        dirtyArea = 
            {d = 0x49b3260, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        allclips = 
            {d = 0x4a221c0, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        upperTranslucentDamage = 
            {d = 0x49b2560, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        opaqueFullscreen = <optimized out>
        displayRegion = 
            {d = 0x3d8e950, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
#15 0x00007fa719822f83 in KWin::SceneOpenGL2::paintSimpleScreen(int, QRegion)
(this=this@entry=0x2707ec0, mask=mask@entry=8, region=...)
    at /usr/src/debug/kwin-5.5.5/scene_opengl.cpp:1094
#16 0x00007fa719810465 in KWin::Scene::finalPaintScreen(int, QRegion,
KWin::ScreenPaintData&) (this=0x2707ec0, mask=mask@entry=8, region=...,
data=...)
    at /usr/src/debug/kwin-5.5.5/scene.cpp:200
#17 0x00007fa7198372b0 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) (this=0x27a17f0, mask=mask@entry=8, region=...,
data=...)
    at /usr/src/debug/kwin-5.5.5/effects.cpp:422
        data = 
            @0x7ffec3c261b0: {<KWin::PaintData> = {_vptr.PaintData =
0x7fa719b5c4b0 <vtable for KWin::ScreenPaintData+16>, d = 0x3066b30}, <No data
fields>}
        region = 
            {d = 0x7ffec3c26000, static shared_empty = {ref = {atomic =
{_q_value = -1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        mask = 8
        this = 0x27a17f0
#18 0x00007fa716fbe28f in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) (this=this@entry=0x27d7ae0, mask=mask@entry=8,
region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/libkwineffects/kwineffects.cpp:537
#19 0x00007fa719837270 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) (this=0x27a17f0, mask=mask@entry=8, region=...,
data=...)
    at /usr/src/debug/kwin-5.5.5/effects.cpp:419
#20 0x00007fa716fbe28f in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) (this=this@entry=0x2766b60, mask=mask@entry=8,
region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/libkwineffects/kwineffects.cpp:537
#21 0x00007fa719837270 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) (this=0x27a17f0, mask=8, region=..., data=...)
    at /usr/src/debug/kwin-5.5.5/effects.cpp:419
#22 0x00007fa7198100fa in KWin::Scene::paintScreen(int*, QRegion const&,
QRegion const&, QRegion*, QRegion*) (this=this@entry=0x2707ec0,
mask=mask@entry=0x7ffec3c26270, damage=..., repaint=...,
updateRegion=updateRegion@entry=0x7ffec3c26240,
validRegion=validRegion@entry=0x7ffec3c26250)
    at /usr/src/debug/kwin-5.5.5/scene.cpp:150
        region = 
            {d = 0x49de070, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        data = 
            {<KWin::PaintData> = {_vptr.PaintData = 0x7fa719b5c4b0 <vtable for
KWin::ScreenPaintData+16>, d = 0x3066b30}, <No data fields>}
        displayRegion = 
            {d = 0x35545c0, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        pdata = 
              {mask = 8, paint = {d = 0x49de070, static shared_empty = {ref =
{atomic = {_q_value = -1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}}
#23 0x00007fa719828357 in KWin::SceneOpenGL::paint(QRegion,
QList<KWin::Toplevel*>) (this=0x2707ec0, damage=..., toplevels=...)
    at /usr/src/debug/kwin-5.5.5/scene_opengl.cpp:743
        repaint = 
            {d = 0x4a56410, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        status = <optimized out>
        mask = 8
        updateRegion = 
            {d = 0x7fa71857a000 <QRegion::shared_empty>, static shared_empty =
{ref = {atomic = {_q_value = -1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
        validRegion = 
            {d = 0x7fa71857a000 <QRegion::shared_empty>, static shared_empty =
{ref = {atomic = {_q_value = -1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
#24 0x00007fa7198087a8 in KWin::Compositor::performCompositing()
(this=0x20c1960) at /usr/src/debug/kwin-5.5.5/composite.cpp:726
        windows = 
            {<QListSpecialMethods<KWin::Toplevel*>> = {<No data fields>}, {p =
{static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0,
end = 0, array = {0x0}}, d = 0x49de8b0}, d = 0x49de8b0}}
        damaged = 
            {<QListSpecialMethods<KWin::Toplevel*>> = {<No data fields>}, {p =
{static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0,
end = 0, array = {0x0}}, d = 0x49d7940}, d = 0x49d7940}}
        repaints = 
            {d = 0x49de070, static shared_empty = {ref = {atomic = {_q_value =
-1}}, qt_rgn = 0x7fa7185918c0 <qrp>}}
#25 0x00007fa717a3e8bc in QObject::event(QEvent*) (this=0x20c1960, e=<optimized
out>) at kernel/qobject.cpp:1220
#26 0x00007fa7186fae7c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=this@entry=0x1f83ac0, receiver=receiver@entry=0x20c1960, e=e@entry=
    0x7ffec3c26730) at kernel/qapplication.cpp:3716
        consumed = <optimized out>
#27 0x00007fa7186ffcc8 in QApplication::notify(QObject*, QEvent*) (this=
    0x7ffec3c26960, receiver=0x20c1960, e=0x7ffec3c26730)
    at kernel/qapplication.cpp:3499
        w = 0x20c1960
        extra = <optimized out>
        isProxyWidget = <optimized out>
        res = false
#28 0x00007fa717a0de95 in QCoreApplication::notifyInternal(QObject*, QEvent*)
(this=0x7ffec3c26960, receiver=0x20c1960, event=event@entry=0x7ffec3c26730)
    at kernel/qcoreapplication.cpp:965
        threadData = 0x1f72f00
        loopLevelCounter = {threadData = 0x1f72f00}
        result = false
        cbdata = {0x20c1960, 0x7ffec3c26730, 0x7ffec3c26690}
        d = <optimized out>
#29 0x00007fa717a6477d in QTimerInfoList::activateTimers()
(event=0x7ffec3c26730, receiver=<optimized out>) at
../../src/corelib/kernel/qcoreapplication.h:224
        e = 
          {<QEvent> = {_vptr.QEvent = 0x7fa717e58b10 <vtable for
QTimerEvent+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata =
0x7fa717bc90c0 <qt_meta_stringdata_QEvent>, data = 0x7fa717bc8b20
<qt_meta_data_QEvent>, static_metacall = 0x0, relatedMetaObjects = 0x0,
extradata = 0x0}}, d = 0x0, t = 1, posted = 0, spont = 0, m_accept = 1,
reserved = 6264}, id = 4}
        currentTimerInfo = 0x47f5220
        n_act = 3
        maxCount = <optimized out>
        currentTime = {tv_sec = 342, tv_nsec = <optimized out>}
#30 0x00007fa717a6477d in QTimerInfoList::activateTimers() (this=0x1fda988)
    at kernel/qtimerinfo_unix.cpp:637
        e = 
          {<QEvent> = {_vptr.QEvent = 0x7fa717e58b10 <vtable for
QTimerEvent+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata =
0x7fa717bc90c0 <qt_meta_stringdata_QEvent>, data = 0x7fa717bc8b20
<qt_meta_data_QEvent>, static_metacall = 0x0, relatedMetaObjects = 0x0,
extradata = 0x0}}, d = 0x0, t = 1, posted = 0, spont = 0, m_accept = 1,
reserved = 6264}, id = 4}
        currentTimerInfo = 0x47f5220
        n_act = 3
        maxCount = <optimized out>
        currentTime = {tv_sec = 342, tv_nsec = <optimized out>}
#31 0x00007fa717a62290 in QEventDispatcherUNIX::activateTimers()
(this=this@entry=0x1fc6f90) at kernel/qeventdispatcher_unix.cpp:549
        d = <optimized out>
#32 0x00007fa717a62fc8 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x1fc6f90, flags=flags@entry=...)
    at kernel/qeventdispatcher_unix.cpp:611
        tm = <optimized out>
        wait_tm = {tv_sec = 0, tv_nsec = 0}
        d = <optimized out>
        nevents = 1
        canWait = <optimized out>
#33 0x00007fa70283f33d in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...)
    at eventdispatchers/qunixeventdispatcher.cpp:62
        didSendEvents = <optimized out>
#34 0x00007fa717a0bd53 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffec3c26890, flags=..., flags@entry=...)
    at kernel/qeventloop.cpp:204
        locker = {val = 32976880}
        ref = {d = 0x2011d40, locker = @0x7ffec3c26810, exceptionCaught = true}
        d = 0x2011d40
#35 0x00007fa717a138f6 in QCoreApplication::exec() ()
    at kernel/qcoreapplication.cpp:1229
        threadData = 0x1f72f00
        eventLoop = 
              {<QObject> = {_vptr.QObject = 0x7fa717e5c450 <vtable for
QEventLoop+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata =
0x7fa717b69720 <qt_meta_stringdata_QObject>, data = 0x7fa717b69600
<qt_meta_data_QObject>, static_metacall = 0x7fa717a46720
<QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x2011d40}, static
staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fa717bb3700
<qt_meta_stringdata_Qt>, data = 0x7fa717bb0d00 <qt_meta_data_Qt>,
static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static
staticMetaObject = {d = {superdata = 0x7fa717e58da0
<QObject::staticMetaObject>, stringdata = 0x7fa717bc8700
<qt_meta_stringdata_QEventLoop>, data = 0x7fa717bc86a0
<qt_meta_data_QEventLoop>, static_metacall = 0x7fa717abf2b0
<QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#36 0x00007fa717f5b8ec in QGuiApplication::exec() ()
    at kernel/qguiapplication.cpp:1529
#37 0x00007fa7186f7605 in QApplication::exec() ()
    at kernel/qapplication.cpp:2976
#38 0x00007fa719f1c887 in kdemain(int, char**) (argc=1, argv=0x7ffec3c26ac8)
    at /usr/src/debug/kwin-5.5.5/main_x11.cpp:308
        number_of_screens = <optimized out>
        a = 
          {<KWin::Application> = {<QApplication> = {<QGuiApplication> =
{<QCoreApplication> = {<QObject> = {_vptr.QObject = 0x7fa71a11ebf0 <vtable for
KWin::ApplicationX11+16>, static staticMetaObject = {d = {superdata = 0x0,
stringdata = 0x7fa717b69720 <qt_meta_stringdata_QObject>, data = 0x7fa717b69600
<qt_meta_data_QObject>, static_metacall = 0x7fa717a46720
<QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x1f83ac0}, static
staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fa717bb3700
<qt_meta_stringdata_Qt>, data = 0x7fa717bb0d00 <qt_meta_data_Qt>,
static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static
staticMetaObject = {d = {superdata = 0x7fa717e58da0
<QObject::staticMetaObject>, stringdata = 0x7fa717bc88e0
<qt_meta_stringdata_QCoreApplication>, data = 0x7fa717bc87c0
<qt_meta_data_QCoreApplication>, static_metacall = 0x7fa717abf430
<QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int,
void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, static self =
0x7ffec3c26960}, static staticMetaObject = {d = {superdata = 0x7fa717e5c5a0
<QCoreApplication::staticMetaObject>, stringdata = 0x7fa7182c24c0
<qt_meta_stringdata_QGuiApplication>, data = 0x7fa7182c22c0
<qt_meta_data_QGuiApplication>, static_metacall = 0x7fa717f65330
<QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int,
void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject
= {d = {superdata = 0x7fa71857ba20 <QGuiApplication::staticMetaObject>,
stringdata = 0x7fa718a8e5a0 <qt_meta_stringdata_QApplication>, data =
0x7fa718a8e420 <qt_meta_data_QApplication>, static_metacall = 0x7fa7186fd260
<QApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d =
{superdata = 0x7fa718de6940 <QApplication::staticMetaObject>, stringdata =
0x7fa71990c260 <qt_meta_stringdata_KWin__Application>, data = 0x7fa71990c140
<qt_meta_data_KWin__Application>, static_metacall = 0x7fa7198ca5f0
<KWin::Application::qt_static_metacall(QObject*, QMetaObject::Call, int,
void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, m_originalSessionKey =
{static null = {<No data fields>}, d = 0x7fa717ac4ce0
<QArrayData::shared_null>}, m_eventFilter = {d = 0x2002140}, m_configLock =
false, m_operationMode = KWin::Application::OperationModeX11, m_x11Time =
342048, m_rootWindow = 136, m_connection = 0x1f8f8e0, static crashes = 0},
static staticMetaObject = {d = {superdata = 0x7fa719b67120
<KWin::Application::staticMetaObject>, stringdata = 0x7fa719f1d360
<qt_meta_stringdata_KWin__ApplicationX11>, data = 0x7fa719f1d300
<qt_meta_data_KWin__ApplicationX11>, static_metacall = 0x7fa719f1cdf0
<KWin::ApplicationX11::qt_static_metacall(QObject*, QMetaObject::Call, int,
void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, owner = {d = 0x200f8a0},
m_replace = false}
        parser = {d = 0x2005100}
        helper = 
          {<QObject> = {_vptr.QObject = 0x7fa719b64f30 <vtable for
KWin::SessionSaveDoneHelper+16>, static staticMetaObject = {d = {superdata =
0x0, stringdata = 0x7fa717b69720 <qt_meta_stringdata_QObject>, data =
0x7fa717b69600 <qt_meta_data_QObject>, static_metacall = 0x7fa717a46720
<QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x2010090}, static
staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fa717bb3700
<qt_meta_stringdata_Qt>, data = 0x7fa717bb0d00 <qt_meta_data_Qt>,
static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static
staticMetaObject = {d = {superdata = 0x7fa717e58da0
<QObject::staticMetaObject>, stringdata = 0x7fa7199019a0
<qt_meta_stringdata_KWin__SessionSaveDoneHelper>, data = 0x7fa719901940
<qt_meta_data_KWin__SessionSaveDoneHelper>, static_metacall = 0x7fa7198cab50
<KWin::SessionSaveDoneHelper::qt_static_metacall(QObject*, QMetaObject::Call,
int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, notifier =
0x2003730, conn = 0x2010ac0}
        primaryScreen = 0
        c = 0x0
        replaceOption = {d = {d = 0x2005ba0}}
#39 0x00007fa719b90b05 in __libc_start_main (main=
    0x400830 <main(int, char**)>, argc=1, argv=0x7ffec3c26ac8, init=<optimized
out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7ffec3c26ab8)
    at libc-start.c:285
        result = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {0, -7484308170885967918, 4196405,
140732182719168, 0, 0, 7484950538474868690, 7452426236035583954},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x400930 <__libc_csu_init>,
0x7ffec3c26ac8}, data = {prev = 0x0, cleanup = 0x0, canceltype = 4196656}}}
        not_first_call = <optimized out>
#40 0x000000000040085e in _start () at ../sysdeps/x86_64/start.S:122
Detaching from program: /usr/bin/kwin_x11, process 1563

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