Index: src-head/lib/libkvm/kvm_proc.c
===================================================================
RCS file: /home/ncvs/src/lib/libkvm/kvm_proc.c,v
retrieving revision 1.98
diff -u -r1.98 kvm_proc.c
--- src-head/lib/libkvm/kvm_proc.c	29 Nov 2008 14:32:14 -0000	1.98
+++ src-head/lib/libkvm/kvm_proc.c	18 Aug 2009 14:30:55 -0000
@@ -467,7 +467,7 @@
 {
 	int mib[4], st, nprocs;
 	size_t size;
-	int temp_op;
+	int err, temp_op;
 
 	if (kd->procbase != 0) {
 		free((void *)kd->procbase);
@@ -550,11 +550,16 @@
 		nl[4].n_name = "_hz";
 		nl[5].n_name = 0;
 
-		if (kvm_nlist(kd, nl) != 0) {
-			for (p = nl; p->n_type != 0; ++p)
-				;
+		err = kvm_nlist(kd, nl);
+		if (err == -1) {
 			_kvm_err(kd, kd->program,
-				 "%s: no such symbol", p->n_name);
+			    "cannot read symbol table");
+			return (0);
+		} else if (err > 0) {
+			for (p = nl; p->n_name != NULL; ++p)
+				if (p->n_type == 0)
+					_kvm_err(kd, kd->program,
+					    "%s: no such symbol", p->n_name);
 			return (0);
 		}
 		if (KREAD(kd, nl[0].n_value, &nprocs)) {