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Commit 143b3efb authored by Eugenia Emantayev's avatar Eugenia Emantayev Committed by David S. Miller
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net/mlx4: Verify port number in __mlx4_unregister_mac 



Verify port number to avoid crashes if port number is outside the range.

Signed-off-by: default avatarEli Cohen <eli@mellanox.com>
Signed-off-by: default avatarEugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: default avatarAmir Vadai <amirv@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4359db1e

drivers/net/ethernet/mellanox/mlx4/port.c

+8 −2
Original line number Diff line number Diff line
@@ -244,10 +244,16 @@ EXPORT_SYMBOL_GPL(mlx4_get_base_qpn); 


void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)

{

	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];

	struct mlx4_mac_table *table = &info->mac_table;

	struct mlx4_port_info *info;

	struct mlx4_mac_table *table;

	int index;



	if (port < 1 || port > dev->caps.num_ports) {

		mlx4_warn(dev, "invalid port number (%d), aborting...\n", port);

		return;

	}

	info = &mlx4_priv(dev)->port[port];

	table = &info->mac_table;

	mutex_lock(&table->mutex);

	index = find_index(dev, table, mac);