FAILED: patch "[PATCH] drm/i915/display: Do not zero past infoframes.vsc" failed to apply to 5.13-stable tree

The patch below does not apply to the 5.13-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From c88e2647c5bb45d04dc4302018ebe6ebbf331823 Mon Sep 17 00:00:00 2001
From: Kees Cook <[email protected]>
Date: Thu, 17 Jun 2021 14:33:01 -0700
Subject: [PATCH] drm/i915/display: Do not zero past infoframes.vsc
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intel_dp_vsc_sdp_unpack() was using a memset() size (36, struct dp_sdp) larger than the destination (24, struct drm_dp_vsc_sdp), clobbering fields in struct intel_crtc_state after infoframes.vsc. Use the actual target size for the memset().

index 5c9222283044..6cc03b9e4321 100644
@@ -2868,7 +2868,7 @@ static int intel_dp_vsc_sdp_unpack(struct drm_dp_vsc_sdp *vsc,
 	if (size < sizeof(struct dp_sdp))
 		return -EINVAL;
 
-	memset(vsc, 0, size);
+	memset(vsc, 0, sizeof(*vsc));
 
 	if (sdp->sdp_header.HB0 != 0)
 		return -EINVAL;