netdev - [net 11/11] net/mlx5e: Fix memleak in mlx5e_create_l2_table

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Message-Id: <20210107202845.470205-12-saeed@kernel.org>
Date:   Thu,  7 Jan 2021 12:28:45 -0800
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Dinghao Liu <dinghao.liu@....edu.cn>,
        Leon Romanovsky <leonro@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net 11/11] net/mlx5e: Fix memleak in mlx5e_create_l2_table_groups

From: Dinghao Liu <dinghao.liu@....edu.cn>

When mlx5_create_flow_group() fails, ft->g should be
freed just like when kvzalloc() fails. The caller of
mlx5e_create_l2_table_groups() does not catch this
issue on failure, which leads to memleak.

Fixes: 33cfaaa8f36f ("net/mlx5e: Split the main flow steering table")
Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_fs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
index 44a2dfbc3853..e02e5895703d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -1392,6 +1392,7 @@ static int mlx5e_create_l2_table_groups(struct mlx5e_l2_table *l2_table)
 	ft->g[ft->num_groups] = NULL;
 	mlx5e_destroy_groups(ft);
 	kvfree(in);
+	kfree(ft->g);
 
 	return err;
 }
-- 
2.26.2