From fdf1d9bbb2518dc4f17d79d0d10b48b33ab3376d Mon Sep 17 00:00:00 2001
From: Nicolas Silva <nsilva@mozilla.com>
Date: Fri, 15 Jun 2018 14:01:07 -0700
Subject: [PATCH] Bug 1464039 - Reject some invalid transforms in qcms.
 r=mwoodrow

---
 gfx/qcms/chain.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gfx/qcms/chain.c b/gfx/qcms/chain.c
index e382fbe00142..2b0e707c443c 100644
--- a/gfx/qcms/chain.c
+++ b/gfx/qcms/chain.c
@@ -972,6 +972,10 @@ static float* qcms_modular_transform_data(struct qcms_modular_transform *transfo
 			assert(0 && "Unsupported transform module");
 			return NULL;
 		}
+		if (transform->grid_size <= 0) {
+			assert(0 && "Invalid transform");
+			return NULL;
+		}
                 transform->transform_module_fn(transform,src,dest,len);
                 dest = src;
                 src = new_src;