Application: kwin_x11 (5.12.5)

Qt Version: 5.10.1
Frameworks Version: 5.45.0
Operating System: Linux 4.14.9-tarball x86_64
Distribution: "Arch Linux"

-- Information about the crash:
I had Discord, Chrome, Thunar, and console open, I closed the laptop lid (It is set to not go to standby or anything, just turn off the display), and a couple hours later, I opened the laptop lid,the screen flashed, and I got a notification that Kwin has crashed. The important specifications of the laptop are: 
Model: HP ProBook 6570b
CPU: Intel Core i5-3230M
(i)GPU, Intel HD Graphics 4000
RAM: 8GB
Linux Distribution: Arch Linux.
MESA: 18.2.0-devel (Compiled from source, also with libdrm)
Compositer is enabled, I have gauusion blur, and the United theme.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f444e81d840 (LWP 20162))]

Thread 7 (Thread 0x7f4419ed4700 (LWP 20358)):
#0  0x00007f444e1d2fa6 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f444b5d9db3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f444b5db54f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f444b58031b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f444b38f71e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f4445cdd319 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f444b394abd in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f4447211075 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f444e1dd53f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f44196d3700 (LWP 20241)):
#0  0x00007f4447216ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f444a4ccf77 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f444a4ccfb9 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f4447211075 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f444e1dd53f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f441bcb4700 (LWP 20223)):
#0  0x00007f4447216ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f442460b73b in cnd_wait (mtx=0x55c0c7295550, cond=0x55c0c7295578) at ../../include/c11/threads_posix.h:155
#2  0x00007f442460b73b in util_queue_thread_func (input=input@entry=0x55c0c718e450) at u_queue.c:255
#3  0x00007f442460b477 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87
#4  0x00007f4447211075 in start_thread () at /usr/lib/libpthread.so.0
#5  0x00007f444e1dd53f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f4427de1700 (LWP 20213)):
#0  0x00007f444b5db423 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#1  0x00007f444b58031b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#2  0x00007f444b38f71e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#3  0x00007f4445cdd319 in  () at /usr/lib/libQt5Qml.so.5
#4  0x00007f444b394abd in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f4447211075 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f444e1dd53f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f442e36d700 (LWP 20179)):
#0  0x00007f444e1d2fa6 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f444b5d9db3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f444b5db54f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f444b58031b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f444b38f71e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f4444b7a416 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f444b394abd in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f4447211075 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f444e1dd53f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f44349cb700 (LWP 20163)):
#0  0x00007f444e1d2ea9 in poll () at /usr/lib/libc.so.6
#1  0x00007f444d0f8180 in  () at /usr/lib/libxcb.so.1
#2  0x00007f444d0f9e4b in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f4435ab682a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f444b394abd in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f4447211075 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f444e1dd53f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f444e81d840 (LWP 20162)):
[KCrash Handler]
#6  0x00007f442473efb3 in atomic_add_unless (add=<optimized out>, unless=<optimized out>, v=<optimized out>) at brw_bufmgr.c:95
#7  0x00007f442473efb3 in brw_bo_unreference (bo=0x81) at brw_bufmgr.c:660
#8  0x00007f44247738ed in intel_destroy_image (image=0x55c0c7736e70) at intel_screen.c:601
#9  0x00007f4425ee2925 in dri3_free_render_buffer (buffer=0x55c0c880f3f0, draw=<optimized out>, draw=<optimized out>) at loader_dri3_helper.c:226
#10 0x00007f4425ee40b9 in dri3_get_buffer (format=format@entry=4098, buffer_type=buffer_type@entry=loader_dri3_buffer_back, draw=draw@entry=0x55c0c73fc9b8, driDrawable=0x55c0c73c8270) at loader_dri3_helper.c:1710
#11 0x00007f4425ee4daf in loader_dri3_get_buffers (driDrawable=driDrawable@entry=0x55c0c73c8270, format=4098, stamp=stamp@entry=0x55c0c73c82a0, loaderPrivate=loaderPrivate@entry=0x55c0c73fc9b8, buffer_mask=<optimized out>, buffer_mask@entry=1, buffers=buffers@entry=0x7ffeb1c6a220) at loader_dri3_helper.c:1863
#12 0x00007f442474508f in intel_update_image_buffers (drawable=0x55c0c73c8270, brw=0x55c0c75383d0) at brw_context.c:1753
#13 0x00007f442474508f in intel_update_renderbuffers (context=context@entry=0x55c0c72a73e0, drawable=drawable@entry=0x55c0c73c8270) at brw_context.c:1429
#14 0x00007f4424745361 in intel_prepare_render (brw=brw@entry=0x55c0c75383d0) at brw_context.c:1450
#15 0x00007f4424747617 in brw_prepare_drawing (max_index=17, min_index=0, index_bounds_valid=<optimized out>, ib=0x0, arrays=<optimized out>, ctx=0x55c0c75383d0) at brw_draw.c:730
#16 0x00007f4424747617 in brw_draw_prims (ctx=0x55c0c75383d0, prims=0x7ffeb1c6a390, nr_prims=1, ib=0x0, index_bounds_valid=<optimized out>, min_index=<optimized out>, max_index=<optimized out>, gl_xfb_obj=0x0, stream=0, indirect=0x0) at brw_draw.c:992
#17 0x00007f44244d56ca in vbo_draw_arrays (ctx=<optimized out>, mode=<optimized out>, start=<optimized out>, count=<optimized out>, numInstances=<optimized out>, baseInstance=<optimized out>, drawID=0) at vbo/vbo_exec_array.c:391
#18 0x00007f44244d5e90 in vbo_exec_DrawArrays (mode=4, start=0, count=18) at vbo/vbo_exec_array.c:550
#19 0x00007f4446b9df78 in KWin::GLVertexBuffer::render(QRegion const&, unsigned int, bool) () at /usr/lib/libkwinglutils.so.11
#20 0x00007f4446b9e032 in KWin::GLVertexBuffer::render(unsigned int) () at /usr/lib/libkwinglutils.so.11
#21 0x00007f4426989e99 in  () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#22 0x00007f442698ea3c in KWin::SceneOpenGL::paintBackground(QRegion) () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#23 0x00007f444dd54927 in KWin::Scene::paintSimpleScreen(int, QRegion) () at /usr/lib/libkwin.so.5
#24 0x00007f4426989de4 in  () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#25 0x00007f444dd54f28 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#26 0x00007f444dd62757 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#27 0x00007f444ad381d2 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.11
#28 0x00007f444dd626fe in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#29 0x00007f444dd54bfb in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at /usr/lib/libkwin.so.5
#30 0x00007f442698f7ea in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#31 0x00007f444dd46ba6 in KWin::Compositor::performCompositing() () at /usr/lib/libkwin.so.5
#32 0x00007f444b5b300b in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#33 0x00007f444c2fffec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#34 0x00007f444c3079c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#35 0x00007f444b581ce0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#36 0x00007f444b5dd678 in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#37 0x00007f444b5db7b4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#38 0x00007f4435b3e71e in  () at /usr/lib/libQt5XcbQpa.so.5
#39 0x00007f444b58031b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#40 0x00007f444b589718 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#41 0x00007f444e4a9416 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#42 0x00007f444e10806b in __libc_start_main () at /usr/lib/libc.so.6
#43 0x000055c0c64f675a in _start ()

Reported using DrKonqi