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| author | Paolo Abeni <pabeni@redhat.com> | 2019-12-01 20:41:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-05 17:38:17 +0300 |
| commit | 796c569498e1ce5159f070c142ba1bfebd33cc18 (patch) | |
| tree | dd779bfaec30d19d1e971962e98a17b60f8bcc92 /net/openvswitch | |
| parent | 2356f0b95fc04f37a028e4f67ef7812aacd2e30c (diff) | |
| download | linux-796c569498e1ce5159f070c142ba1bfebd33cc18.tar.xz | |
openvswitch: remove another BUG_ON()
[ Upstream commit 8a574f86652a4540a2433946ba826ccb87f398cc ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/openvswitch')
| -rw-r--r-- | net/openvswitch/datapath.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index 002aa96d79ef..3248cf04d0b3 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: |