netdev - [PATCH net 2/8] net/mlx5: HWS, fixed double free in error flow of definer layout

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Message-ID: <20241015093208.197603-3-tariqt@nvidia.com>
Date: Tue, 15 Oct 2024 12:32:02 +0300
From: Tariq Toukan <tariqt@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>
CC: <netdev@...r.kernel.org>, Saeed Mahameed <saeedm@...dia.com>, Gal Pressman
	<gal@...dia.com>, Leon Romanovsky <leonro@...dia.com>, Yevgeny Kliteynik
	<kliteyn@...dia.com>, Itamar Gozlan <igozlan@...dia.com>, Tariq Toukan
	<tariqt@...dia.com>
Subject: [PATCH net 2/8] net/mlx5: HWS, fixed double free in error flow of definer layout

From: Yevgeny Kliteynik <kliteyn@...dia.com>

Fix error flow bug that could lead to double free of a buffer
during a failure to calculate a suitable definer layout.

Fixes: 74a778b4a63f ("net/mlx5: HWS, added definers handling")
Signed-off-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Reviewed-by: Itamar Gozlan <igozlan@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 .../mellanox/mlx5/core/steering/hws/mlx5hws_definer.c         | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c
index d566d2ddf424..3f4c58bada37 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_definer.c
@@ -1925,7 +1925,7 @@ mlx5hws_definer_calc_layout(struct mlx5hws_context *ctx,
 	ret = hws_definer_conv_match_params_to_hl(ctx, mt, match_hl);
 	if (ret) {
 		mlx5hws_err(ctx, "Failed to convert items to header layout\n");
-		goto free_fc;
+		goto free_match_hl;
 	}
 
 	/* Find the match definer layout for header layout match union */
@@ -1946,7 +1946,7 @@ mlx5hws_definer_calc_layout(struct mlx5hws_context *ctx,
 
 free_fc:
 	kfree(mt->fc);
-
+free_match_hl:
 	kfree(match_hl);
 	return ret;
 }
-- 
2.44.0