st/mesa: set compressed_data to NULL when freed

Reported-by: Karol Herbst <kherbst@redhat.com>
Fixes: b6db703e0f0 ("st/mesa: make texture views inherit compressed_data storage")
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Tested-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5821>

diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 7227457..b0ea844 100644 (file)
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -235,6 +235,7 @@ st_FreeTextureImageBuffer(struct gl_context *ctx,
        pipe_reference(&stImage->compressed_data->reference, NULL)) {
       free(stImage->compressed_data->ptr);
       free(stImage->compressed_data);
+      stImage->compressed_data = NULL;
    }
 
    /* if the texture image is being deallocated, the structure of the