11083 support NFS server in zone
Portions contributed by: Dan Kruchinin <dan.kruchinin@nexenta.com>
Portions contributed by: Stepan Zastupov <stepan.zastupov@gmail.com>
Portions contributed by: Joyce McIntosh <joyce.mcintosh@nexenta.com>
Portions contributed by: Mike Zeller <mike@mikezeller.net>
Portions contributed by: Dan McDonald <danmcd@joyent.com>
Portions contributed by: Gordon Ross <gordon.w.ross@gmail.com>
Portions contributed by: Vitaliy Gusev <gusev.vitaliy@gmail.com>
Reviewed by: Rick McNeal <rick.mcneal@nexenta.com>
Reviewed by: Rob Gittins <rob.gittins@nexenta.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Jason King <jbk@joyent.com>
Reviewed by: C Fraire <cfraire@me.com>
Change-Id: I22f289d357503f9b48a0bc2482cc4328a6d43d16

@@ -558,17 +558,21 @@
         bzero(&cs, sizeof (cs));
         cs.statusp = &resp->status;
         cs.cont = TRUE;
 
         /*
-         * Form a reply tag by copying over the reqeuest tag.
+         * Form a reply tag by copying over the request tag.
          */
         resp->tag.utf8string_len = args->tag.utf8string_len;
-        resp->tag.utf8string_val = kmem_alloc(resp->tag.utf8string_len,
-            KM_SLEEP);
+        if (args->tag.utf8string_len != 0) {
+                resp->tag.utf8string_val =
+                    kmem_alloc(resp->tag.utf8string_len, KM_SLEEP);
         bcopy(args->tag.utf8string_val, resp->tag.utf8string_val,
             args->tag.utf8string_len);
+        } else {
+                resp->tag.utf8string_val = NULL;
+        }
 
         /*
          * XXX for now, minorversion should be zero
          */
         if (args->minorversion != CB4_MINORVERSION) {