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: 985538e ("net/sched: remove redundant null check on head") Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
berg · May 22, 2017 · 2d76b2f · 2d76b2f
1 parent 499fde6
commit 2d76b2f
Showing 1 changed file with 0 additions and 1 deletion.
diff --git 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: