[Mesa-stable] [PATCH] i965/miptree: Fail gracefully when make_surface returns NULL

[Ian Romanick]

From: Ian Romanick <ian.d.romanick at intel.com>

Every other caller of make_surface does something sensible when NULL is
returned.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104214
Tested-by: Cyril <cyril.duez at gmail.com>
Cc: "17.3" <mesa-stable at lists.freedesktop.org>
---
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index ead0c35..0079a08 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -719,6 +719,9 @@ miptree_create(struct brw_context *brw,
          ISL_SURF_USAGE_DEPTH_BIT | ISL_SURF_USAGE_TEXTURE_BIT,
          BO_ALLOC_BUSY, 0, NULL);
 
+      if (mt == NULL)
+         return NULL;
+
       if (needs_separate_stencil(brw, mt, format) &&
           !make_separate_stencil_surface(brw, mt)) {
          intel_miptree_release(&mt);
-- 
2.9.5