linux-kernel - [PATCH net 2/6] net/mlx5: Fix QoS reference leak in vport enable error path

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Message-ID: <1755095476-414026-3-git-send-email-tariqt@nvidia.com>
Date: Wed, 13 Aug 2025 17:31:12 +0300
From: Tariq Toukan <tariqt@...dia.com>
To: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
 S. Miller" <davem@...emloft.net>
CC: Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>,
	Tariq Toukan <tariqt@...dia.com>, Mark Bloch <mbloch@...dia.com>,
	<netdev@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Gal Pressman <gal@...dia.com>, Dragos Tatulea
	<dtatulea@...dia.com>, Carolina Jubran <cjubran@...dia.com>
Subject: [PATCH net 2/6] net/mlx5: Fix QoS reference leak in vport enable error path

From: Carolina Jubran <cjubran@...dia.com>

Add missing esw_qos_put() call when __esw_qos_alloc_node() fails in
mlx5_esw_qos_vport_enable().

Fixes: be034baba83e ("net/mlx5: Make vport QoS enablement more flexible for future extensions")
Signed-off-by: Carolina Jubran <cjubran@...dia.com>
Reviewed-by: Cosmin Ratiu <cratiu@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
index 91d863c8c152..79d6add402d7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
@@ -1141,8 +1141,10 @@ static int mlx5_esw_qos_vport_enable(struct mlx5_vport *vport, enum sched_node_t
 
 	parent = parent ?: esw->qos.node0;
 	sched_node = __esw_qos_alloc_node(parent->esw, 0, type, parent);
-	if (!sched_node)
+	if (!sched_node) {
+		esw_qos_put(esw);
 		return -ENOMEM;
+	}
 
 	sched_node->max_rate = max_rate;
 	sched_node->min_rate = min_rate;
-- 
2.31.1