NEX-5260 smbd segfaults while running smbtorture:rpc.lsa.lookupnames
NEX-5261 smbd segfaults while running smbtorture:rpc.winreg
NEX-5262 smbd segfaults while running smbtorture:rpc.samba3
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>

@@ -19,10 +19,11 @@
  * CDDL HEADER END
  */
 
 /*
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2016 Nexenta Systems, Inc.  All rights reserved.
  */
 
 /*
  * Windows Registry RPC (WINREG) server-side interface.
  *

@@ -905,11 +906,12 @@
         DWORD slen;
         DWORD msize;
 
         name = (char *)param->value_name.str;
 
-        if (strcasecmp(name, "PrimaryModule") == 0) {
+        if (name == NULL ||
+            strcasecmp(name, "PrimaryModule") == 0) {
                 param->status = ERROR_FILE_NOT_FOUND;
                 return (NDR_DRC_OK);
         }
 
         if ((value = winreg_lookup_value(name)) == NULL) {