diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -849,6 +849,7 @@
 	/*
 	 * Zero the spare stat fields
 	 */
+	sb->st_padding1 = 0;
 	sb->st_lspare = 0;
 	sb->st_qspare2 = 0;