From 02dd03ff3ce07362c1c1636d537f90ad96c87c49 Mon Sep 17 00:00:00 2001
From: Timothy Arceri <tarceri@itsqueeze.com>
Date: Mon, 28 Jun 2021 14:26:54 +1000
Subject: [PATCH] i965: don't crash on incorrect texture use

Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4995

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11603>
---
 src/mesa/drivers/dri/i965/brw_tex_validate.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_tex_validate.c b/src/mesa/drivers/dri/i965/brw_tex_validate.c
index 696655673fd..36803cc2640 100644
--- a/src/mesa/drivers/dri/i965/brw_tex_validate.c
+++ b/src/mesa/drivers/dri/i965/brw_tex_validate.c
@@ -104,6 +104,8 @@ brw_finalize_mipmap_tree(struct brw_context *brw,
    assert(!tObj->Immutable || brw->screen->devinfo.ver < 6);
 
    firstImage = brw_texture_image(tObj->Image[0][tObj->Attrib.BaseLevel]);
+   if (!firstImage)
+      return;
 
    /* Check tree can hold all active levels.  Check tree matches
     * target, imageFormat, etc.