[965] Don't segfault on INTEL_DEBUG=batch when a surface buffer is NULL.

diff --git a/src/mesa/drivers/dri/i965/brw_state_dump.c b/src/mesa/drivers/dri/i965/brw_state_dump.c
index 9eb27cc..319dac8 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_state_dump.c
+++ b/src/mesa/drivers/dri/i965/brw_state_dump.c
@@ -94,6 +94,10 @@ static void dump_wm_surface_state(struct brw_context *brw)
       struct brw_surface_state *surf;
       char name[20];
 
+      if (surf_bo == NULL) {
+        fprintf(stderr, "WM SS%d: NULL\n", i);
+        continue;
+      }
       dri_bo_map(surf_bo, GL_FALSE);
       surfoff = surf_bo->offset;
       surf = (struct brw_surface_state *)(surf_bo->virtual);