Index: subr_pool.c
===================================================================
RCS file: /cvs/src/sys/kern/subr_pool.c,v
retrieving revision 1.179
diff -u -p -r1.179 subr_pool.c
--- subr_pool.c	22 Jan 2015 05:09:41 -0000	1.179
+++ subr_pool.c	5 Feb 2015 09:05:20 -0000
@@ -1370,6 +1370,8 @@ pool_allocator_free(struct pool *pp, voi
 {
 	struct pool_allocator *pa = pp->pr_alloc;
 
+	arc4random_buf(v, pp->pr_pgsize);
+
 	KERNEL_LOCK();
 	(*pa->pa_free)(pp, v);
 	KERNEL_UNLOCK();