diff options
| author | Talat Batheesh <talatb@mellanox.com> | 2017-03-28 16:13:41 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-29 04:07:15 +0300 |
| commit | e497ec680c4cd51e76bfcdd49363d9ab8d32a757 (patch) | |
| tree | a640dc269b2ded61147fd5fb391d5bfafb30c68b /drivers/net | |
| parent | c2b341a620018d4eaeb0e85c16274ac4e5f153d4 (diff) | |
| download | linux-e497ec680c4cd51e76bfcdd49363d9ab8d32a757.tar.xz | |
net/mlx5: Avoid dereferencing uninitialized pointer
In NETDEV_CHANGEUPPER event the upper_info field is valid
only when linking is true. Otherwise it should be ignored.
Fixes: 7907f23adc18 (net/mlx5: Implement RoCE LAG feature)
Signed-off-by: Talat Batheesh <talatb@mellanox.com>
Reviewed-by: Aviv Heller <avivh@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/lag.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag.c index 55957246c0e8..b5d5519542e8 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lag.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.c @@ -294,7 +294,7 @@ static int mlx5_handle_changeupper_event(struct mlx5_lag *ldev, struct netdev_notifier_changeupper_info *info) { struct net_device *upper = info->upper_dev, *ndev_tmp; - struct netdev_lag_upper_info *lag_upper_info; + struct netdev_lag_upper_info *lag_upper_info = NULL; bool is_bonded; int bond_status = 0; int num_slaves = 0; @@ -303,7 +303,8 @@ static int mlx5_handle_changeupper_event(struct mlx5_lag *ldev, if (!netif_is_lag_master(upper)) return 0; - lag_upper_info = info->upper_info; + if (info->linking) + lag_upper_info = info->upper_info; /* The event may still be of interest if the slave does not belong to * us, but is enslaved to a master which has one or more of our netdevs |