From 2d76b2f8b54abd16225cd80afca36ed43f113c41 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Mon, 22 May 2017 16:46:13 +0200 Subject: net: sched: cls_matchall: fix null pointer dereference Since the head is guaranteed by the check above to be null, the call_rcu would explode. Remove the previously logically dead code that was made logically very much alive and kicking. Fixes: 985538eee06f ("net/sched: remove redundant null check on head") Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- net/sched/cls_matchall.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c index dee469fed967..51859b8edd7e 100644 --- a/net/sched/cls_matchall.c +++ b/net/sched/cls_matchall.c @@ -203,7 +203,6 @@ static int mall_change(struct net *net, struct sk_buff *in_skb, *arg = (unsigned long) head; rcu_assign_pointer(tp->root, new); - call_rcu(&head->rcu, mall_destroy_rcu); return 0; err_replace_hw_filter: -- cgit v1.2.3