netdev - [net-next 4/7] net/mlx5e: TC, Move kfree() calls after destroying all resources

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20211102002914.1052888-5-saeed@kernel.org>
Date:   Mon,  1 Nov 2021 17:29:11 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Roi Dayan <roid@...dia.com>,
        Vlad Buslov <vladbu@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 4/7] net/mlx5e: TC, Move kfree() calls after destroying all resources

From: Roi Dayan <roid@...dia.com>

When deleting fdb/nic flow rules first release all resources
and then call the kfree() calls instead of sparse them around
the function.

Signed-off-by: Roi Dayan <roid@...dia.com>
Reviewed-by: Vlad Buslov <vladbu@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 50424998b5c8..5122e5b6200d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1132,8 +1132,6 @@ static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
 	}
 	mutex_unlock(&priv->fs.tc.t_lock);
 
-	kvfree(attr->parse_attr);
-
 	if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 		mlx5e_detach_mod_hdr(priv, flow);
 
@@ -1143,6 +1141,7 @@ static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
 	if (flow_flag_test(flow, HAIRPIN))
 		mlx5e_hairpin_flow_del(priv, flow);
 
+	kvfree(attr->parse_attr);
 	kfree(flow->attr);
 }
 
@@ -1630,9 +1629,6 @@ static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
 		else
 			mlx5e_detach_mod_hdr(priv, flow);
 	}
-	kfree(attr->sample_attr);
-	kvfree(attr->parse_attr);
-	kvfree(attr->esw_attr->rx_tun_attr);
 
 	if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
 		mlx5_fc_destroy(esw_attr->counter_dev, attr->counter);
@@ -1646,6 +1642,9 @@ static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
 	if (flow_flag_test(flow, L3_TO_L2_DECAP))
 		mlx5e_detach_decap(priv, flow);
 
+	kfree(attr->sample_attr);
+	kvfree(attr->esw_attr->rx_tun_attr);
+	kvfree(attr->parse_attr);
 	kfree(flow->attr);
 }
 
-- 
2.31.1