From e7672080699d0d3593167efec40b17cca69e644a Mon Sep 17 00:00:00 2001
From: Danylo Piliaiev <dpiliaiev@igalia.com>
Date: Mon, 15 Mar 2021 20:32:52 +0200
Subject: [PATCH] ir3: fix oob access to regs array for getbuf,getinfo,rgetinfo

Since they have zero source registers, src->regs[1] is out of bounds.
It probably wasn't able to cause any harm, but it's always better
be safe.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4209

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9609>
---
 src/freedreno/isa/ir3-cat5.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/freedreno/isa/ir3-cat5.xml b/src/freedreno/isa/ir3-cat5.xml
index 2568f40c253..92697f6584c 100644
--- a/src/freedreno/isa/ir3-cat5.xml
+++ b/src/freedreno/isa/ir3-cat5.xml
@@ -157,7 +157,7 @@ SOFTWARE.
 		 -->
 		<map name="SRC1">extract_cat5_SRC(src, 1)</map>
 		<map name="SRC2">extract_cat5_SRC(src, 2)</map>
-		<map name="SRC3">src->regs[1]</map>
+		<map name="SRC3">(src->regs_count > 1) ? src->regs[1] : NULL</map>
 	</encode>
 </bitset>