#0  0x0000003cd12c8a5d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003cd12c88f4 in __sleep (seconds=0, seconds@entry=1)
    at ../sysdeps/unix/sysv/linux/sleep.c:138
#2  0x000000371ee03fe2 in KCrash::startProcess(int, char const**, bool) (directly=false, waitAndExit=true, argv=0x7fff1e636130, argc=2521)
    at ../../src/kcrash.cpp:628
#3  0x000000371ee03fe2 in KCrash::startProcess(int, char const**, bool) (argc=argc@entry=21, argv=argv@entry=0x7fff1e636130, waitAndExit=waitAndExit@entry=true) at ../../src/kcrash.cpp:594
#4  0x000000371ee04490 in KCrash::defaultCrashHandler(int) (sig=<optimized out>) at ../../src/kcrash.cpp:505
#5  0x0000003cd1234a50 in <signal handler called> () at /lib64/libc.so.6
#6  0x00007fa8ecbad71f in brw_workaround_depthstencil_alignment (irb=0x41540e0)
    at brw_misc_state.c:215
#7  0x00007fa8ecbad71f in brw_workaround_depthstencil_alignment (brw=brw@entry=0x31ef6a8, clear_mask=clear_mask@entry=50) at brw_misc_state.c:231
#8  0x00007fa8ecb35883 in brw_clear (ctx=0x31ef6a8, mask=50) at brw_clear.c:235
#9  0x00000037205263fa in QSGBatchRenderer::Renderer::renderBatches() (this=this@entry=0x4157730)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp:2471
#10 0x000000372052bde2 in QSGBatchRenderer::Renderer::render() (this=<optimized out>)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/scenegraph/co
reapi/qsgbatchrenderer.cpp:2674
#11 0x0000003720537adf in QSGRenderer::renderScene(QSGBindable const&) (this=0x4157730, bindable=...)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/scenegraph/coreapi/qsgrenderer.cpp:208
#12 0x000000372053832b in QSGRenderer::renderScene(unsigned int) (this=<optimized out>, fboId=<optimized out>)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/scenegraph/coreapi/qsgrenderer.cpp:168
#13 0x000000372054871e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) (this=0x2b95fa0, renderer=0x4157730, fboId=<optimized out>)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/scenegraph/qsgcontext.cpp:558
#14 0x000000372059265b in QQuickWindowPrivate::renderSceneGraph(QSize const&) (this=this@entry=0x2faa2f0, size=...)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickwindow.cpp:383
#15 0x000000372056301b in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) (this=this@entry=0x2b90600, window=0x2f99d10)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/scenegraph/qsgrenderloop.cpp:375
#16 0x0000003720564916 in QSGGuiThreadRenderLoop::exposureChanged(QQuickWindow*) (this=0x2b90600, window=0x2f99d10)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/scenegraph/qs
grenderloop.cpp:419
#17 0x0000003716cf8585 in QWindow::event(QEvent*) (this=this@entry=0x2f99d10, ev=ev@entry=0x7fff1e637060) at kernel/qwindow.cpp:2053
#18 0x000000372059de91 in QQuickWindow::event(QEvent*) (this=this@entry=0x2f99d10, e=e@entry=0x7fff1e637060)
    at /usr/src/debug/qtdeclarative-opensource-src-5.5.0/src/quick/items/qquickwindow.cpp:1414
#19 0x000000000043f276 in DesktopView::event(QEvent*) (this=
    0x2f99d10, e=0x7fff1e637060) at ../../shell/desktopview.cpp:206
#20 0x00000037175544ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x26ed060, receiver=receiver@entry=0x2f99d10, e=e@entry=0x7fff1e637060) at kernel/qapplication.cpp:3717
#21 0x0000003717559976 in QApplication::notify(QObject*, QEvent*) (this=0x7fff1e6374a0, receiver=0x2f99d10, e=0x7fff1e637060) at kernel/qapplication.cpp:3500
#22 0x00000031ac08361b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7fff1e6374a0, receiver=receiver@entry=0x2f99d10, event=event@entry=0x7fff1e637060) at kernel/qcoreapplication.cpp:965
#23 0x0000003716cf0abc in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (event=0x7fff1e637060, receiver=0x2f99d10)
    at ../../src/corelib/kernel/qcoreapplication.h:227
#24 0x0000003716cf0abc in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=0x31e8720)
    at kernel/qguiapplication.cpp:2643
#25 0x0000003716cf183d in QGuiApplicationPrivate::processWindowSystemEvent(QWind
owSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x31e8720)
    at kernel/qguiapplication.cpp:1644
#26 0x0000003716cd55d8 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...)
    at kernel/qwindowsysteminterface.cpp:608
#27 0x00007fa8f6483b10 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#28 0x0000003cd3a49a8a in g_main_context_dispatch (context=0x7fa8f00016f0)
    at gmain.c:3122
#29 0x0000003cd3a49a8a in g_main_context_dispatch (context=context@entry=0x7fa8f00016f0) at gmain.c:3737
#30 0x0000003cd3a49e20 in g_main_context_iterate (context=context@entry=0x7fa8f00016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at gmain.c:3808
#31 0x0000003cd3a49ecc in g_main_context_iteration (context=0x7fa8f00016f0, may_block=may_block@entry=1) at gmain.c:3869
#32 0x00000031ac0d9d8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x2736a20, flags=...)
    at kernel/qeventdispatcher_glib.cpp:418
#33 0x00000031ac080daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff1e637320, flags=..., flags@entry=...)
    at kernel/qeventloop.cpp:204
#34 0x00000031ac088e6c in QCoreApplication::exec() ()
    at kernel/qcoreapplication.cpp:1229
#35 0x0000003716ce724c in QGuiApplication::exec() ()
    at kernel/qguiapplication.cpp:1528
#36 0x00000037175508e5 in QApplication::exec() ()
    at kernel/qapplication.cpp:2977
#37 0x00000000004302c3 in main(int, char**) (argc=2, argv=<optimized out>)
    at ../../shell/main.cpp:176