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net: sched: cls_matchall: fix null pointer dereference

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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: 985538eee0 ("net/sched: remove redundant null check on head")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-05-22 16:46:13 +02:00 committed by David S. Miller
parent 499fde662f
commit 2d76b2f8b5
1 changed files with 0 additions and 1 deletions
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net/sched/cls_matchall.c
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@ -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: