From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Fri, 6 Apr 2018 17:19:41 -0700
Subject: net_sched: fix a missing idr_remove() in u32_delete_key()
Patch-mainline: v4.17-rc1
Git-commit: f12c643209db0626f2f54780d86bb93bfa7a9c2d
References: bsc#1109837
When we delete a u32 key via u32_delete_key(), we forget to
call idr_remove() to remove its handle from IDR.
Fixes: e7614370d6f0 ("net_sched: use idr to allocate u32 filter handles")
Reported-by: Marcin Kabiesz <admin@hostcenter.eu>
Tested-by: Marcin Kabiesz <admin@hostcenter.eu>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
net/sched/cls_u32.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -490,6 +490,7 @@ static int u32_delete_key(struct tcf_pro
RCU_INIT_POINTER(*kp, key->next);
tcf_unbind_filter(tp, &key->res);
+ idr_remove(&ht->handle_idr, key->handle);
tcf_exts_get_net(&key->exts);
call_rcu(&key->rcu, u32_delete_key_freepf_rcu);
return 0;