From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Thu, 26 Mar 2015 23:06:37 +0000 (-0400)
Subject: tgsi: fix out-of-bounds access for cube arrays
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=626434893a048f3ba89a751998fcb3789a3dbb96;p=mesa.git

tgsi: fix out-of-bounds access for cube arrays

The CUBE_ARRAY case uses r[4]. Make sure that the stack variable is
there.

Noticed by Coverity.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
---

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 8d08059deca..d9e40506afa 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -2344,7 +2344,7 @@ exec_sample(struct tgsi_exec_machine *mach,
 {
    const uint resource_unit = inst->Src[1].Register.Index;
    const uint sampler_unit = inst->Src[2].Register.Index;
-   union tgsi_exec_channel r[4], c1;
+   union tgsi_exec_channel r[5], c1;
    const union tgsi_exec_channel *lod = &ZeroVec;
    enum tgsi_sampler_control control = tgsi_sampler_lod_none;
    uint chan;