--- xorg-server-1.19.7/dix/pixmap.c.1	2020-08-02 06:10:47.527239653 +0000
+++ xorg-server-1.19.7/dix/pixmap.c	2020-08-02 06:11:17.221087952 +0000
@@ -116,7 +116,7 @@
     if (pScreen->totalPixmapSize > ((size_t) - 1) - pixDataSize)
         return NullPixmap;
 
-    pPixmap = malloc(pScreen->totalPixmapSize + pixDataSize);
+    pPixmap = calloc(1, pScreen->totalPixmapSize + pixDataSize);
     if (!pPixmap)
         return NullPixmap;