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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [Regression BDW] kernel panic in Intel i915 module, complete system freeze in 4.10-rc2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99295#c47">Comment # 47</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [Regression BDW] kernel panic in Intel i915 module, complete system freeze in 4.10-rc2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99295">bug 99295</a>
from <span class="vcard"><a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> <span class="fn">Daniel Vetter</span></a>
</span></b>
<pre>(In reply to Helio Loureiro from <a href="show_bug.cgi?id=99295#c46">comment #46</a>)
<span class="quote">> (In reply to Chris Wilson from <a href="show_bug.cgi?id=99295#c22">comment #22</a>)
> > Or less broken:
> >
> > diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c
> > b/drivers/gpu/drm/i915/i915_gem_gtt.c
> > index b4bde1452f2a..be75ab6a8ed6 100644
> > --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> > +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> > @@ -33,7 +33,7 @@
> > #include "intel_drv.h"
> > #include "intel_frontbuffer.h"
> >
> > -#define I915_GFP_DMA (GFP_KERNEL | __GFP_HIGHMEM)
> > +#define I915_GFP_DMA ((GFP_KERNEL | __GFP_HIGHMEM) & ~__GFP_RECLAIM)
> >
> > /**
> > * DOC: Global GTT views
>
> Hi,
>
> I applied such patch on top of 4.11.2. It apparently caught the bug and
> didn't crash the usage.</span >
This patch is already rejected for backporting, testing it doesn't move this
bug foward. Please instead test Chris' latest patch (and only that, no other
hacks/backports applied please) <span class=""><a href="attachment.cgi?id=2" name="attach_2" title="fail on submake failure patch">attachment #2</a> <a href="attachment.cgi?id=2&action=edit" title="fail on submake failure patch">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=99295&attachment=2'>[review]</a>.
<span class="quote">> I just noticed the kernel log after checking w/ journalctl.</span >
This is just an OOM report (with a few lines missing at the beginning), which
is somewhat expected with Chris' patch. It explains why kwin dies in execbuf
with "out of memory" at least".
-Daniel</pre>
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