drm/savage: off by one in savage_bci_cmdbuf()

The > should be >= here so that we don't read beyond the end of the
dma->buflist[] array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180704094810.whrgn6jxe7uibnfv@kili.mountain

diff --git a/drivers/gpu/drm/savage/savage_state.c b/drivers/gpu/drm/savage/savage_state.c
index 2db89be..7559a82 100644 (file)
--- a/drivers/gpu/drm/savage/savage_state.c
+++ b/drivers/gpu/drm/savage/savage_state.c
@@ -971,7 +971,7 @@ int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_
        LOCK_TEST_WITH_RETURN(dev, file_priv);
 
        if (dma && dma->buflist) {
-               if (cmdbuf->dma_idx > dma->buf_count) {
+               if (cmdbuf->dma_idx >= dma->buf_count) {
                        DRM_ERROR
                            ("vertex buffer index %u out of range (0-%u)\n",
                             cmdbuf->dma_idx, dma->buf_count - 1);