--- kernel/bsd/nfs/nfs_syscalls.c	2018/04/24 18:26:01	1.1
+++ kernel/bsd/nfs/nfs_syscalls.c	2018/04/24 18:27:56	1.1.1.2
@@ -460,7 +460,8 @@ nfssvc_addsock(fp, mynam, p)
 	}
 	slp->ns_so = so;
 	slp->ns_nam = mynam;
-	fp->f_count++;
+	if (++fp->f_count <= 0)
+		panic("nfssvc_addsock f_count");
 	slp->ns_fp = fp;
 	s = splnet();
 	so->so_upcallarg = (caddr_t)slp;
@@ -492,6 +493,7 @@ nfssvc_nfsd(nsd, argp, p)
 	int error = 0, cacherep, s, sotype, writes_todo;
 	int procrastinate;
 	u_quad_t cur_usec;
+	extern void	nfs_aio_thread_init();
 
 #ifndef nolint
 	cacherep = RC_DOIT;
@@ -505,6 +507,7 @@ nfssvc_nfsd(nsd, argp, p)
 		nfsd->nfsd_procp = p;
 		TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain);
 		nfs_numnfsd++;
+		nfs_aio_thread_init();
 	}
 	/*
 	 * Loop getting rpc requests until SIGKILL.