From: jsg <jsg@openbsd.org>
Date: Mon, 19 Jul 2021 10:51:58 +0000 (+0000)
Subject: drm/i915/display: Do not zero past infoframes.vsc
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=0abc5c1f423b1dfaf5246579ce89f28217b31cda;p=openbsd

drm/i915/display: Do not zero past infoframes.vsc

From Kees Cook
3f9c2a058e61b8df9fef196ad6180fbf9932ed80 in linux 5.10.y/5.10.51
07b72960d2b4a087ff2445e286159e69742069cc in mainline linux
---

diff --git a/sys/dev/pci/drm/i915/display/intel_dp.c b/sys/dev/pci/drm/i915/display/intel_dp.c
index 6beb5d14656..7f2727c077a 100644
--- a/sys/dev/pci/drm/i915/display/intel_dp.c
+++ b/sys/dev/pci/drm/i915/display/intel_dp.c
@@ -5080,7 +5080,7 @@ 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;