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| author | Moni Shoua <monis@mellanox.com> | 2015-03-18 16:51:35 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-18 15:17:11 -0400 |
| commit | 217e8b16a43a1780e77607dc019c5f3b26fab48a (patch) | |
| tree | a0facea5a2aef70d76194d901c52b28dc43df753 | |
| parent | ced585c83b27deca427c606a34dd3eaa6b96d82b (diff) | |
| download | linux-stable-217e8b16a43a1780e77607dc019c5f3b26fab48a.tar.gz linux-stable-217e8b16a43a1780e77607dc019c5f3b26fab48a.tar.bz2 linux-stable-217e8b16a43a1780e77607dc019c5f3b26fab48a.zip | |
IB/mlx4: Verify net device validity on port change event
Processing an event is done in a different context from the one when
the event was dispatched. This requires a check that the slave
net device is still valid when the event is being processed. The check is done
under the iboe lock which ensure correctness.
Fixes: a57500903093 ('IB/mlx4: Add port aggregation support')
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/infiniband/hw/mlx4/main.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index ac6e2b710ea6..b972c0b41799 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -2697,8 +2697,12 @@ static void handle_bonded_port_state_event(struct work_struct *work) spin_lock_bh(&ibdev->iboe.lock); for (i = 0; i < MLX4_MAX_PORTS; ++i) { struct net_device *curr_netdev = ibdev->iboe.netdevs[i]; + enum ib_port_state curr_port_state; - enum ib_port_state curr_port_state = + if (!curr_netdev) + continue; + + curr_port_state = (netif_running(curr_netdev) && netif_carrier_ok(curr_netdev)) ? IB_PORT_ACTIVE : IB_PORT_DOWN; |