netdev - [PATCH net-next] net: openvswitch: return an error instead of doing BUG

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Message-Id: <20190502201238.21698.58459.stgit@netdev64>
Date:   Thu,  2 May 2019 16:12:38 -0400
From:   Eelco Chaudron <echaudro@...hat.com>
To:     netdev@...r.kernel.org
Cc:     pshelar@....org, davem@...emloft.net, dev@...nvswitch.org
Subject: [PATCH net-next] net: openvswitch: return an error instead of doing BUG_ON()

For all other error cases in queue_userspace_packet() the error is
returned, so it makes sense to do the same for these two error cases.

Reported-by: Davide Caratti <dcaratti@...hat.com>
Signed-off-by: Eelco Chaudron <echaudro@...hat.com>
---
 net/openvswitch/datapath.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index b95015c..dc9ff93 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -455,7 +455,8 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
 	upcall->dp_ifindex = dp_ifindex;
 
 	err = ovs_nla_put_key(key, key, OVS_PACKET_ATTR_KEY, false, user_skb);
-	BUG_ON(err);
+	if (err)
+		goto out;
 
 	if (upcall_info->userdata)
 		__nla_put(user_skb, OVS_PACKET_ATTR_USERDATA,
@@ -471,7 +472,9 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
 		}
 		err = ovs_nla_put_tunnel_info(user_skb,
 					      upcall_info->egress_tun_info);
-		BUG_ON(err);
+		if (err)
+			goto out;
+
 		nla_nest_end(user_skb, nla);
 	}