diff -Nur linux-2.6.32.8/net/netfilter/xt_limit.c.ORIG linux-2.6.32.8/net/netfilter/xt_limit.c
--- linux-2.6.32.8/net/netfilter/xt_limit.c.ORIG	2012-09-12 17:14:19.758371942 -0700
+++ linux-2.6.32.8/net/netfilter/xt_limit.c	2012-09-19 12:09:00.238416282 -0700
@@ -114,6 +114,32 @@
 	if (priv == NULL)
 		return false;
 
+    // Start of Infoblox patch.
+    // Zero out 'priv' for good measure.
+    memset(priv, 0, sizeof(*priv));
+    // This seems to fix the problem of priv not being initialized when
+    // r->cost is non-zero.
+    if (r->cost != 0) {
+        // Note that non-zero r->cost seems to imply non-null
+        // r->master, however, better safe than sorry, so check r->master.
+        if (r->master != NULL) {
+            spin_lock_bh(&limit_lock);
+            priv->prev = r->master->prev;
+            priv->credit = r->master->credit;
+            spin_unlock_bh(&limit_lock);
+        } else {
+            // Not sure if this can ever happen. And definitely not sure
+            // if this is the right thing to do, however, priv needs to be
+            // initialized to something.
+            printk("limit_mt_check: unexpected non-zero cost and null master\n");
+            priv->prev = jiffies;
+            priv->credit = user2credits(r->avg * r->burst); /* Credits full. */
+        }
+        r->master = priv;
+        return true;
+    }
+    // End of Infoblox patch.
+
 	/* For SMP, we only want to use one set of state. */
 	r->master = priv;
 	if (r->cost == 0) {