Just the usual paranoia ...
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/drm_crtc.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index b15d720eda4c..a12d7e8a0ca0 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -3322,6 +3322,23 @@ static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
}
}
+ for (; i < 4; i++) {
+ if (r->handles[i]) {
+ DRM_DEBUG_KMS("buffer object handle for unused plane %d\n", i);
+ return -EINVAL;
+ }
+
+ if (r->pitches[i] || r->offsets[i]) {
+ DRM_DEBUG_KMS("buffer pitch/offset for unused plane", i);
+ return -EINVAL;
+ }
+
+ if (r->modifier[i]) {
+ DRM_DEBUG_KMS("fb modifer for unused plane", i);
+ return -EINVAL;
+ }
+ }
+
return 0;
}
--
2.1.4
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