netdev - [PATCH net,v2] net/mlx5: DR, fix memory leak in mlx5dr_cmd_create_reformat

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Message-ID: <20230705121527.2230772-1-shaozhengchao@huawei.com>
Date: Wed, 5 Jul 2023 20:15:27 +0800
From: Zhengchao Shao <shaozhengchao@...wei.com>
To: <netdev@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
	<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>
CC: <valex@...dia.com>, <kliteyn@...dia.com>, <mbloch@...dia.com>,
	<danielj@...dia.com>, <erezsh@...lanox.com>, <saeedm@...dia.com>,
	<leon@...nel.org>, <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>,
	<shaozhengchao@...wei.com>
Subject: [PATCH net,v2] net/mlx5: DR, fix memory leak in mlx5dr_cmd_create_reformat_ctx

when mlx5_cmd_exec failed in mlx5dr_cmd_create_reformat_ctx, the memory
pointed by 'in' is not released, which will cause memory leak. Move memory
release after mlx5_cmd_exec.

Fixes: 1d9186476e12 ("net/mlx5: DR, Add direct rule command utilities")
Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
---
v2: goto label 'err_free_in' to free 'in'
---
 drivers/net/ethernet/mellanox/mlx5/core/steering/dr_cmd.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_cmd.c
index 7491911ebcb5..8c2a34a0d6be 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_cmd.c
@@ -564,11 +564,12 @@ int mlx5dr_cmd_create_reformat_ctx(struct mlx5_core_dev *mdev,
 
 	err = mlx5_cmd_exec(mdev, in, inlen, out, sizeof(out));
 	if (err)
-		return err;
+		goto err_free_in;
 
 	*reformat_id = MLX5_GET(alloc_packet_reformat_context_out, out, packet_reformat_id);
-	kvfree(in);
 
+err_free_in:
+	kvfree(in);
 	return err;
 }
 
-- 
2.34.1