Merge branch 'net_sched-Fix-two-tc_index-filter-init-issues'

Hangbin Liu says:

====================
net_sched: Fix two tc_index filter init issues

These two patches fix two tc_index filter init issues. The first one fixes
missing exts info in new filter, which will cause NULL pointer dereference
when delete tcindex filter. The second one fixes missing res info when create
new filter, which will make filter unbind failed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/cls_tcindex.c

@@ -447,11 +447,6 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
 		tcf_bind_filter(tp, &cr.res, base);
 	}
 
-	if (old_r)
-		tcf_exts_change(&r->exts, &e);
-	else
-		tcf_exts_change(&cr.exts, &e);
-
 	if (old_r && old_r != r) {
 		err = tcindex_filter_result_init(old_r);
 		if (err < 0) {
@@ -462,12 +457,15 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
 
 	oldp = p;
 	r->res = cr.res;
+	tcf_exts_change(&r->exts, &e);
+
 	rcu_assign_pointer(tp->root, cp);
 
 	if (r == &new_filter_result) {
 		struct tcindex_filter *nfp;
 		struct tcindex_filter __rcu **fp;
 
+		f->result.res = r->res;
 		tcf_exts_change(&f->result.exts, &r->exts);
 
 		fp = cp->h + (handle % cp->hash);