[NET_SCHED]: Fix filter double free

[linux-2.6] / net / sched / sch_cbq.c

diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index a294542cb8e4724eba3f3995e775568123cb481b..ee2d5967d109bdd61c7eb67c4ec04d585974b1f5 100644 (file)
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1748,10 +1748,12 @@ cbq_destroy(struct Qdisc* sch)
         * classes from root to leafs which means that filters can still
         * be bound to classes which have been destroyed already. --TGR '04
         */
-       for (h = 0; h < 16; h++)
-               for (cl = q->classes[h]; cl; cl = cl->next)
+       for (h = 0; h < 16; h++) {
+               for (cl = q->classes[h]; cl; cl = cl->next) {
                        tcf_destroy_chain(cl->filter_list);
-
+                       cl->filter_list = NULL;
+               }
+       }
        for (h = 0; h < 16; h++) {
                struct cbq_class *next;