Merge branch 'blender-v2.81-release'

source/blender/editors/gpencil/gpencil_paint.c

@@ -837,6 +837,11 @@ static short gp_stroke_addpoint(
     gpd->runtime.sbuffer = ED_gpencil_sbuffer_ensure(
         gpd->runtime.sbuffer, &gpd->runtime.sbuffer_size, &gpd->runtime.sbuffer_used, false);
 
+    /* Check the buffer was created. */
+    if (gpd->runtime.sbuffer == NULL) {
+      return GP_STROKEADD_INVALID;
+    }
+
     /* get pointer to destination point */
     pt = ((tGPspoint *)(gpd->runtime.sbuffer) + gpd->runtime.sbuffer_used);
 

source/blender/editors/gpencil/gpencil_utils.c

@@ -2548,6 +2548,11 @@ tGPspoint *ED_gpencil_sbuffer_ensure(tGPspoint *buffer_array,
       *buffer_size += GP_STROKE_BUFFER_CHUNK;
       p = MEM_recallocN(buffer_array, sizeof(struct tGPspoint) * *buffer_size);
     }
+
+    if (p == NULL) {
+      *buffer_size = *buffer_used = 0;
+    }
+
     buffer_array = p;
   }