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authorPaolo Abeni <pabeni@redhat.com>2019-12-01 18:41:25 +0100
committerDavid S. Miller <davem@davemloft.net>2019-12-01 22:21:24 +0100
commit8a574f86652a4540a2433946ba826ccb87f398cc (patch)
tree721cdbb01ff7e864a864f31e93ef97cc2cdc6702 /net
parentopenvswitch: drop unneeded BUG_ON() in ovs_flow_cmd_build_info() (diff)
downloadlinux-8a574f86652a4540a2433946ba826ccb87f398cc.tar.xz
linux-8a574f86652a4540a2433946ba826ccb87f398cc.zip
openvswitch: remove another BUG_ON()
If we can't build the flow del notification, we can simply delete the flow, no need to crash the kernel. Still keep a WARN_ON to preserve debuggability. Note: the BUG_ON() predates the Fixes tag, but this change can be applied only after the mentioned commit. v1 -> v2: - do not leak an skb on error Fixes: aed067783e50 ("openvswitch: Minimize ovs_flow_cmd_del critical section.") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/openvswitch/datapath.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 8cab3435d8da..1047e8043084 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -1372,7 +1372,10 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
OVS_FLOW_CMD_DEL,
ufid_flags);
rcu_read_unlock();
- BUG_ON(err < 0);
+ if (WARN_ON_ONCE(err < 0)) {
+ kfree_skb(reply);
+ goto out_free;
+ }
ovs_notify(&dp_flow_genl_family, reply, info);
} else {
@@ -1380,6 +1383,7 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
}
}
+out_free:
ovs_flow_free(flow, true);
return 0;
unlock: