Index: mesa-10.1.3/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
===================================================================
--- mesa-10.1.3.orig/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c	2014-06-06 16:15:35.580972917 -0600
+++ mesa-10.1.3/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c	2014-06-06 16:15:35.572972917 -0600
@@ -441,6 +441,11 @@
 {
    struct gl_context *ctx = &brw->ctx;
    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
+
+   if (!irb || !irb->mt) {
+	return;
+   }
+
    struct intel_region *region = irb->mt->region;
    uint32_t format;
    /* _NEW_BUFFERS */