net-sched: fix filter destruction in atm/hfsc qdisc destruction

Filters need to be destroyed before beginning to destroy classes
since the destination class needs to still be alive to unbind the
filter.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index 8e5f70b..db0e23a 100644 (file)
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -586,9 +586,11 @@ static void atm_tc_destroy(struct Qdisc *sch)
        struct atm_flow_data *flow;
 
        pr_debug("atm_tc_destroy(sch %p,[qdisc %p])\n", sch, p);
+       for (flow = p->flows; flow; flow = flow->next)
+               tcf_destroy_chain(&flow->filter_list);
+
        /* races ? */
        while ((flow = p->flows)) {
-               tcf_destroy_chain(&flow->filter_list);
                if (flow->ref > 1)
                        printk(KERN_ERR "atm_destroy: %p->ref = %d\n", flow,
                               flow->ref);

diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index eca83a3..e817aa0 100644 (file)
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1541,6 +1541,10 @@ hfsc_destroy_qdisc(struct Qdisc *sch)
        unsigned int i;
 
        for (i = 0; i < HFSC_HSIZE; i++) {
+               list_for_each_entry(cl, &q->clhash[i], hlist)
+                       tcf_destroy_chain(&cl->filter_list);
+       }
+       for (i = 0; i < HFSC_HSIZE; i++) {
                list_for_each_entry_safe(cl, next, &q->clhash[i], hlist)
                        hfsc_destroy_class(sch, cl);
        }