Emmanuel Gil Peyrot
b4a82110ce
This avoids reading past the buffer’s end in the client afterward, because the
drmFormatModifierCount hasn’t been changed from what the client passed, if it
wasn’t zero at first.
GTK triggers that bug by setting it to the length of the static array (see this
bug[0] though), but other Vulkan programs might have the same issue if they
don’t first query the count before allocating the array.
This has been tested on a Radxa ROCK 5B board running a Mali-G610 GPU.
[0] https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/8222
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Fixes: 252ddaf51b ("panvk: fix VkDrmFormatModifierPropertiesListEXT query")
Fixes: https://gitlab.freedesktop.org/mstoeckl/waypipe/-/issues/127
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33657>
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