[Mesa-dev] [PATCH 1/2] tgsi: fix out of bounds access in exec_atomop()

[Samuel Pitoiset]

The number of channels must be 4 for all RGBA components.

Fixes: 22d129601 ("tgsi: add support for image operations to tgsi_exec. (v2.1)")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Cc: Dave Airlie <airlied at redhat.com>
---
 src/gallium/auxiliary/tgsi/tgsi_exec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 53d5937..729c222 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -3852,7 +3852,7 @@ static void
 exec_atomop(struct tgsi_exec_machine *mach,
             const struct tgsi_full_instruction *inst)
 {
-   union tgsi_exec_channel r[3], sample_r;
+   union tgsi_exec_channel r[4], sample_r;
    union tgsi_exec_channel value[4], value2[4];
    float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE];
    float rgba2[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE];
-- 
2.7.4