[ovs-dev,net-next,v3,09/10] net: openvswitch: don't unlock mutex when changing the user_features fails
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Message ID 1570802447-8019-10-git-send-email-xiangxia.m.yue@gmail.com
State New
Headers show
Series
  • optimize openvswitch flow looking up
Related show

Commit Message

Tonghao Zhang Oct. 11, 2019, 2 p.m. UTC
From: Tonghao Zhang <xiangxia.m.yue@gmail.com>

Unlocking of a not locked mutex is not allowed.
Other kernel thread may be in critical section while
we unlock it because of setting user_feature fail.

Fixes: 95a7233c4 ("net: openvswitch: Set OvS recirc_id from tc chain index")
Cc: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
---
 net/openvswitch/datapath.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 9fea7e1..aeb76e4 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -1657,6 +1657,7 @@  static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
 				ovs_dp_reset_user_features(skb, info);
 		}
 
+		ovs_unlock();
 		goto err_destroy_meters;
 	}
 
@@ -1673,7 +1674,6 @@  static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
 	return 0;
 
 err_destroy_meters:
-	ovs_unlock();
 	ovs_meters_exit(dp);
 err_destroy_ports_array:
 	kfree(dp->ports);