Subject: [PATCH 12/24] net/mlx5: IPsec, fix memory leak at mlx5_fpga_ipsec_delete_sa_ctx

From: Raed Salem <[email-masked]>
Date: Wed, 23 Oct 2019 16:41:21 +0300

[ Upstream commit 08db2cf577487f5123aebcc2f913e0b8a2c14b43 ]

SA context is allocated at mlx5_fpga_ipsec_create_sa_ctx,
however the counterpart mlx5_fpga_ipsec_delete_sa_ctx function
nullifies sa_ctx pointer without freeing the memory allocated,
hence the memory leak.

Fix by free SA context when the SA is released.

Fixes: d6c4f0298cec ("net/mlx5: Refactor accel IPSec code")
Signed-off-by: Raed Salem <[email-masked]>
Reviewed-by: Boris Pismenny <[email-masked]>
Signed-off-by: Saeed Mahameed <[email-masked]>
---
 drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
index e62a9b1aa060..72232e570af7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
@@ -850,6 +850,7 @@ void mlx5_fpga_ipsec_delete_sa_ctx(void *context)
 	mutex_lock(&fpga_xfrm->lock);
 	if (!--fpga_xfrm->num_rules) {
 		mlx5_fpga_ipsec_release_sa_ctx(fpga_xfrm->sa_ctx);
+		kfree(fpga_xfrm->sa_ctx);
 		fpga_xfrm->sa_ctx = NULL;
 	}
 	mutex_unlock(&fpga_xfrm->lock);
-- 
2.21.1