4.4-stable review patch. If anyone has any objections, please let me know.
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From: Talat Batheesh talatb@mellanox.com
[ Upstream commit 89c557687a32c294e9d25670a96e9287c09f2d5f ]
Inserting steering rules with illegal ring is an invalid operation, block it.
Fixes: 820672812f82 ('net/mlx4_en: Manage flow steering rules with ethtool') Signed-off-by: Talat Batheesh talatb@mellanox.com Signed-off-by: Tariq Toukan tariqt@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -1513,6 +1513,11 @@ static int mlx4_en_flow_replace(struct n qpn = priv->drop_qp.qpn; else if (cmd->fs.ring_cookie & EN_ETHTOOL_QP_ATTACH) { qpn = cmd->fs.ring_cookie & (EN_ETHTOOL_QP_ATTACH - 1); + if (qpn < priv->rss_map.base_qpn || + qpn >= priv->rss_map.base_qpn + priv->rx_ring_num) { + en_warn(priv, "rxnfc: QP (0x%x) doesn't exist\n", qpn); + return -EINVAL; + } } else { if (cmd->fs.ring_cookie >= priv->rx_ring_num) { en_warn(priv, "rxnfc: RX ring (%llu) doesn't exist\n",