panfrost: Guard against reading past end of buffer

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>

diff --git a/src/gallium/drivers/panfrost/pan_swizzle.c b/src/gallium/drivers/panfrost/pan_swizzle.c
index 291bd1f88aea1b1f8fa26df6808671dec48b7807..52a907ddd55d14c26f2b89d37b2c2718f2b873dc 100644 (file)
--- a/src/gallium/drivers/panfrost/pan_swizzle.c
+++ b/src/gallium/drivers/panfrost/pan_swizzle.c
@@ -97,6 +97,9 @@ swizzle_bpp1_align16(int width, int height, int source_stride, int block_pitch,
 
                 ++y;
 
+                if (y >= height)
+                        break;
+
                 {
                         int block_y = y & ~(0x0f);
                         int rem_y = y & 0x0f;