Index: head/sys/rpc/svc.c
===================================================================
--- head/sys/rpc/svc.c
+++ head/sys/rpc/svc.c
@@ -1185,7 +1185,8 @@
 			/*
 			 * Enforce maxthreads count.
 			 */
-			if (grp->sg_threadcount > grp->sg_maxthreads)
+			if (!ismaster && grp->sg_threadcount >
+			    grp->sg_maxthreads)
 				break;
 
 			/*