From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Mon, 23 Dec 2019 20:49:18 +0000 (-0500)
Subject: pan/midgard: Bounds check lcra_restrict_range
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4e75d757244f7f0b727ff2eaaa06c94e805e8474;p=mesa.git

pan/midgard: Bounds check lcra_restrict_range

We may call it with sentinel values (~0 in particular) corresponding to
unused arguments; ignore these.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
---

diff --git a/src/panfrost/midgard/lcra.c b/src/panfrost/midgard/lcra.c
index a280a744b92..28f9a735a44 100644
--- a/src/panfrost/midgard/lcra.c
+++ b/src/panfrost/midgard/lcra.c
@@ -101,7 +101,7 @@ lcra_set_disjoint_class(struct lcra_state *l, unsigned c1, unsigned c2)
 void
 lcra_restrict_range(struct lcra_state *l, unsigned node, unsigned len)
 {
-        if (l->alignment[node])
+        if (node < l->node_count && l->alignment[node])
                 l->modulus[node] = DIV_ROUND_UP(l->bound - len + 1, 1 << (l->alignment[node] - 1));
 }