[v4 2/3] lib/igt_draw: Sanitize the buffer data in the beginning

[Vandita Kulkarni]

Since now we have a new member in buffer data which is a
pointer, we need to initialise the buf_ptr. If left uninitialised
may contain garbage. Also may be used in wc write method if it is
initialised to already mmapped buffer.

Signed-off-by: Vandita Kulkarni <vandita.kulkarni at intel.com>
---
 lib/igt_draw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/igt_draw.c b/lib/igt_draw.c
index a4d5f2f0e..5ad631f38 100644
--- a/lib/igt_draw.c
+++ b/lib/igt_draw.c
@@ -801,7 +801,7 @@ static void draw_rect_render(int fd, struct cmd_data *cmd_data,
 	uint32_t devid = intel_get_drm_devid(fd);
 	igt_render_copyfunc_t rendercopy = igt_get_render_copyfunc(devid);
 	struct intel_bb *ibb;
-	struct buf_data tmp;
+	struct buf_data tmp = {};
 	int pixel_size = buf->bpp / 8;
 
 	igt_skip_on(!rendercopy);
@@ -822,6 +822,7 @@ static void draw_rect_render(int fd, struct cmd_data *cmd_data,
 	tmp.bpp = buf->bpp;
 	tmp.width = rect->w;
 	tmp.height = rect->h;
+	tmp.buf_ptr = buf->buf_ptr;
 	if (is_i915_device(fd))
 		draw_rect_mmap_cpu(fd, &tmp, &(struct rect){0, 0, rect->w, rect->h},
 				   I915_TILING_NONE, I915_BIT_6_SWIZZLE_NONE, color);
-- 
2.43.2