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| author | Joe Stringer <joestringer@nicira.com> | 2015-10-06 10:59:57 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-10-07 05:03:03 -0700 |
| commit | b8f2257069f179c7bdedc9501c1623070c4c37bb (patch) | |
| tree | 123345db5a1b910ab007d7fcbd2d2bc0489e4203 /net | |
| parent | 0a7cc172a01e4a203667fb601cd80131db8d0c9a (diff) | |
| download | linux-b8f2257069f179c7bdedc9501c1623070c4c37bb.tar.gz linux-b8f2257069f179c7bdedc9501c1623070c4c37bb.tar.bz2 linux-b8f2257069f179c7bdedc9501c1623070c4c37bb.zip | |
openvswitch: Fix skb leak in ovs_fragment()
If ovs_fragment() was unable to fragment the skb due to an L2 header
that exceeds the supported length, skbs would be leaked. Fix the bug.
Fixes: 7f8a436eaa2c "openvswitch: Add conntrack action"
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/openvswitch/actions.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c index e23a61cc3d5c..4cb93f92d6be 100644 --- a/net/openvswitch/actions.c +++ b/net/openvswitch/actions.c @@ -684,7 +684,7 @@ static void ovs_fragment(struct vport *vport, struct sk_buff *skb, u16 mru, { if (skb_network_offset(skb) > MAX_L2_LEN) { OVS_NLERR(1, "L2 header too long to fragment"); - return; + goto err; } if (ethertype == htons(ETH_P_IP)) { @@ -708,8 +708,7 @@ static void ovs_fragment(struct vport *vport, struct sk_buff *skb, u16 mru, struct rt6_info ovs_rt; if (!v6ops) { - kfree_skb(skb); - return; + goto err; } prepare_frag(vport, skb); @@ -728,8 +727,12 @@ static void ovs_fragment(struct vport *vport, struct sk_buff *skb, u16 mru, WARN_ONCE(1, "Failed fragment ->%s: eth=%04x, MRU=%d, MTU=%d.", ovs_vport_name(vport), ntohs(ethertype), mru, vport->dev->mtu); - kfree_skb(skb); + goto err; } + + return; +err: + kfree_skb(skb); } static void do_output(struct datapath *dp, struct sk_buff *skb, int out_port, |