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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Corruption in Firefox 30 or later"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79517#c3">Comment # 3</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Corruption in Firefox 30 or later"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79517">bug 79517</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>If you apply

diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 2513b8b..fcf354e 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -4556,7 +4556,7 @@ try_upload_tiled_x(PixmapPtr pixmap, RegionRec *region,
                return false;
        }

-       if (priv->gpu_damage &&
+       if (priv->gpu_damage && 0 &&
            region_subsumes_damage(region, priv->gpu_damage)) {
                if (UNDO)
                        kgem_bo_undo(&sna->kgem, priv->gpu_bo);

that will disable one chunk of that patch. Does the corruption still occur?</pre>
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