when enabling cpu caches, check the item size against the right thing

lists of free items on the per cpu caches are built out the pool items
as struct pool_cache_items, not struct pool_cache. make the KASSERT
in pool_cache_init check that properly.

diff --git a/sys/kern/subr_pool.c b/sys/kern/subr_pool.c
index ec6b290..1da3c62 100644 (file)
--- a/sys/kern/subr_pool.c
+++ b/sys/kern/subr_pool.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: subr_pool.c,v 1.208 2017/04/20 14:13:00 visa Exp $    */
+/*     $OpenBSD: subr_pool.c,v 1.209 2017/06/13 11:41:11 dlg Exp $     */
 /*     $NetBSD: subr_pool.c,v 1.61 2001/09/26 07:14:56 chs Exp $       */
 
 /*-
@@ -1608,7 +1608,8 @@ pool_cache_init(struct pool *pp)
                    IPL_NONE, PR_WAITOK, "plcache", NULL);
        }
 
-       KASSERT(pp->pr_size >= sizeof(*pc));
+        /* must be able to use the pool items as cache list items */
+       KASSERT(pp->pr_size >= sizeof(struct pool_cache_item));
 
        cm = cpumem_get(&pool_caches);