[Bug 86281] brw_meta_fast_clear (brw=brw at entry=0x7fffd4097a08, fb=fb at entry=0x7fffd40fa900, buffers=buffers at entry=2, partial_clear=partial_clear at entry=false)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86281

--- Comment #32 from Cjacker <cjacker at foxmail.com> ---
(In reply to Martin Sandsmark from comment #28)
> I was told on IRC earlier today that someone from Intel said the bug was
> fixed in git, but I just tested with
> 30a7e0c021c3a77c20c6f041dc80b7dc90ad238f, and the first thing that happened
> when I logged in was this crash.

Bug not fixed, when enabling dri2 of driver, with kernel-4.2rc5/mesa git
head/xf86-drv-video git head/drm git head.

Hardware is "Thinkpad x250" with "00:02.0 VGA compatible controller: Intel
Corporation Broadwell-U Integrated Graphics (rev 09)"(00:02.0 0300: 8086:1616
(rev 09)).


There is still no easy way to reproduce it, generally, I started ltp test and
clicked kickoff menu or some popups. after serveral minutes, segfault happened.


Thread 1 (Thread 0x7f55086dd840 (LWP 983)):
[KCrash Handler]
#6  0x00007f54f7af19dc in brw_meta_fast_clear (brw=brw at entry=0x1c69aa8,
fb=fb at entry=0x65868a0, buffers=buffers at entry=34,
partial_clear=partial_clear at entry=false) at brw_meta_fast_clear.c:451
#7  0x00007f54f7a8d73c in brw_clear (ctx=0x1c69aa8, mask=34) at brw_clear.c:247
#8  0x0000003b56527676 in QSGBatchRenderer::Renderer::renderBatches() () at
/lib/libQt5Quick.so.5
#9  0x0000003b5652cdb2 in QSGBatchRenderer::Renderer::render() () at
/lib/libQt5Quick.so.5
#10 0x0000003b565386af in QSGRenderer::renderScene(QSGBindable const&) () at
/lib/libQt5Quick.so.5
#11 0x0000003b56538edb in QSGRenderer::renderScene(unsigned int) () at
/lib/libQt5Quick.so.5
#12 0x0000003b56548a7e in QSGRenderContext::renderNextFrame(QSGRenderer*,
unsigned int) () at /lib/libQt5Quick.so.5
#13 0x0000003b5659009b in QQuickWindowPrivate::renderSceneGraph(QSize const&)
() at /lib/libQt5Quick.so.5
#14 0x0000003b56562933 in  () at /lib/libQt5Quick.so.5
#15 0x0000003b56563a31 in  () at /lib/libQt5Quick.so.5
#16 0x0000003b4f59632c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib/libQt5Widgets.so.5
#17 0x0000003b4f59b446 in QApplication::notify(QObject*, QEvent*) () at
/lib/libQt5Widgets.so.5
#18 0x00000035b8490b73 in QCoreApplication::notifyInternal(QObject*, QEvent*)
() at /lib/libQt5Core.so.5
#19 0x00000035b84e321d in QTimerInfoList::activateTimers() () at
/lib/libQt5Core.so.5
#20 0x00000035b84e3769 in  () at /lib/libQt5Core.so.5
#21 0x00000038dec48847 in g_main_context_dispatch () at /lib/libglib-2.0.so.0
#22 0x00000038dec48a78 in  () at /lib/libglib-2.0.so.0
#23 0x00000038dec48b1c in g_main_context_iteration () at /lib/libglib-2.0.so.0
#24 0x00000035b84e436f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/libQt5Core.so.5
#25 0x00000035b848e6da in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/libQt5Core.so.5
#26 0x00000035b849624d in QCoreApplication::exec() () at /lib/libQt5Core.so.5
#27 0x000000000042e8fd in main ()

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