[dpdk-dev] [PATCH] net/mlx5: fix RSS flow configuration crash

[Moti Haimovsky <motih@mellanox.com>]

This commit fixes a segmentation fault observed when configuring
mlx5 with RSS flow rule containing invalid queues indices such as
negative numbers or numbers bigger than the number Rx queues the PMD
is configured with.

Fixes: 592f05b29a25 ("net/mlx5: add RSS flow action")
Cc: nelio.laranjeiro@6wind.com

Signed-off-by: Moti Haimovsky <motih@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 6c3021a..0b55366 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -2077,6 +2077,12 @@ struct mlx5_flow_tunnel_info {
 					  "some RSS protocols are not"
 					  " supported");
 	for (i = 0; i != rss->queue_num; ++i) {
+		if (rss->queue[i] >= priv->rxqs_n)
+			return rte_flow_error_set
+				(error, EINVAL,
+				 RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+				 &rss->queue[i],
+				 "queue index out of range");
 		if (!(*priv->rxqs)[rss->queue[i]])
 			return rte_flow_error_set
 				(error, EINVAL,
-- 
1.8.3.1