[Mesa-dev] [Bug 94481] softpipe - access violation in img_filter_2d_nearest

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94481

            Bug ID: 94481
           Summary: softpipe - access violation in img_filter_2d_nearest
           Product: Mesa
           Version: 11.2
          Hardware: All
                OS: Windows (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Other
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: greg.beatty at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

img_filter_2d_nearest and the other image filter functions access the
args->offset property of the img_filter structure which is a pointer without
checking if the value is actually defined. img_filter_2d_ewa(...) creates a
local copy of img_filter, but it never initializes the offset property. When
that local copy of img_filter is passed into min_filter(sp_sview, sp_samp,
&args, &rgba_temp[0][jj]), an access violation occurs when the offset property
is attempted to be read.

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