--- zzzz-none-000/linux-3.10.107/fs/cifs/smbencrypt.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/cifs/smbencrypt.c	2021-02-04 17:41:59.000000000 +0000
@@ -29,6 +29,7 @@
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/random.h>
+#include "cifs_fs_sb.h"
 #include "cifs_unicode.h"
 #include "cifspdu.h"
 #include "cifsglob.h"
@@ -220,7 +221,7 @@
 	}
 
 	rc = mdfour(p16, (unsigned char *) wpwd, len * sizeof(__le16));
-	memset(wpwd, 0, 129 * sizeof(__le16));
+	memzero_explicit(wpwd, sizeof(wpwd));
 
 	return rc;
 }