Index: head/lib/libutil/kinfo_getvmobject.c
===================================================================
--- head/lib/libutil/kinfo_getvmobject.c	(revision 319442)
+++ head/lib/libutil/kinfo_getvmobject.c	(revision 319443)
@@ -1,94 +1,96 @@
 /*
  * Copyright (c) 2013 Hudson River Trading LLC
  * Written by: John H. Baldwin <jhb@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #include <sys/user.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "libutil.h"
 
 struct kinfo_vmobject *
 kinfo_getvmobject(int *cntp)
 {
 	char *buf, *bp, *ep;
 	struct kinfo_vmobject *kvo, *list, *kp;
 	size_t len;
 	int cnt, i;
 
 	buf = NULL;
 	for (i = 0; i < 3; i++) {
-		if (sysctlbyname("vm.objects", NULL, &len, NULL, 0) < 0)
+		if (sysctlbyname("vm.objects", NULL, &len, NULL, 0) < 0) {
+			free(buf);
 			return (NULL);
+		}
 		buf = reallocf(buf, len);
 		if (buf == NULL)
 			return (NULL);
 		if (sysctlbyname("vm.objects", buf, &len, NULL, 0) == 0)
 			goto unpack;
 		if (errno != ENOMEM) {
 			free(buf);
 			return (NULL);
 		}
 	}
 	free(buf);
 	return (NULL);
 
 unpack:
 	/* Count items */
 	cnt = 0;
 	bp = buf;
 	ep = buf + len;
 	while (bp < ep) {
 		kvo = (struct kinfo_vmobject *)(uintptr_t)bp;
 		bp += kvo->kvo_structsize;
 		cnt++;
 	}
 
 	list = calloc(cnt, sizeof(*list));
 	if (list == NULL) {
 		free(buf);
 		return (NULL);
 	}
 
 	/* Unpack */
 	bp = buf;
 	kp = list;
 	while (bp < ep) {
 		kvo = (struct kinfo_vmobject *)(uintptr_t)bp;
 		memcpy(kp, kvo, kvo->kvo_structsize);
 		bp += kvo->kvo_structsize;
 		kp->kvo_structsize = sizeof(*kp);
 		kp++;
 	}
 	free(buf);
 	*cntp = cnt;
 	return (list);
 }