[Bug 66755] New: [sna, gm45] Image corruption in Firefox

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66755

          Priority: medium
            Bug ID: 66755
          Assignee: chris at chris-wilson.co.uk
           Summary: [sna, gm45] Image corruption in Firefox
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: pavel.ondracka at email.cz
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

Created attachment 82257
  --> https://bugs.freedesktop.org/attachment.cgi?id=82257&action=edit
screenshot

After some time browsing, random images in Firefox become corrupted. This can't
be 100% reproduced, some webpages show it more some less, and I didn't noticed
any relation to image type. Top logo at phoronix shows this quite often
(screenshot attached). There is also another symptom when opening image in
separate tab. There should be solid gray background, however sometimes there is
just random corruption, even when the image itself is rendered correctly. 
BTW everything is fine with UXA.

GPU: gm45
xf86-video-intel: ccf0fdd56dc6efd30e425209d753ed4f90562d76 (sna enabled)
kernel: 3.9.6-200.fc18.x86_64
libdrm: 2.4.45-1.fc18
Xserver: 1.13.3-3.fc18
Firefox: 22.0

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