linux-kernel - [PATCH AUTOSEL 4.18 06/33] net/mlx5: Fix memory leak when setting fpga ipsec caps

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Date:   Tue, 30 Oct 2018 09:26:30 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Talat Batheesh <talatb@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.18 06/33] net/mlx5: Fix memory leak when setting fpga ipsec caps

From: Talat Batheesh <talatb@...lanox.com>

[ Upstream commit fd7e848077c1a466b9187537adce16658f7cb94b ]

Allocated memory for context should be freed once
finished working with it.

Fixes: d6c4f0298cec ("net/mlx5: Refactor accel IPSec code")
Signed-off-by: Talat Batheesh <talatb@...lanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@...lanox.com>
Reviewed-by: Tariq Toukan <tariqt@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
index 5645a4facad2..b8ee9101c506 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
@@ -245,7 +245,7 @@ static void *mlx5_fpga_ipsec_cmd_exec(struct mlx5_core_dev *mdev,
 		return ERR_PTR(res);
 	}
 
-	/* Context will be freed by wait func after completion */
+	/* Context should be freed by the caller after completion. */
 	return context;
 }
 
@@ -418,10 +418,8 @@ static int mlx5_fpga_ipsec_set_caps(struct mlx5_core_dev *mdev, u32 flags)
 	cmd.cmd = htonl(MLX5_FPGA_IPSEC_CMD_OP_SET_CAP);
 	cmd.flags = htonl(flags);
 	context = mlx5_fpga_ipsec_cmd_exec(mdev, &cmd, sizeof(cmd));
-	if (IS_ERR(context)) {
-		err = PTR_ERR(context);
-		goto out;
-	}
+	if (IS_ERR(context))
+		return PTR_ERR(context);
 
 	err = mlx5_fpga_ipsec_cmd_wait(context);
 	if (err)
@@ -435,6 +433,7 @@ static int mlx5_fpga_ipsec_set_caps(struct mlx5_core_dev *mdev, u32 flags)
 	}
 
 out:
+	kfree(context);
 	return err;
 }
 
-- 
2.17.1