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[81.237.238.191]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a2a068f5f1sm842596e87.55.2026.03.26.13.59.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2026 13:59:34 -0700 (PDT) From: Oskar Ray-Frayssinet To: saeedm@nvidia.com Cc: tariqt@nvidia.com, mbloch@nvidia.com, leon@kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Oskar Ray-Frayssinet Subject: [PATCH net 1/3] net/mlx5e: Add null check for flow namespace in mlx5e_tc_nic_create_miss_table Date: Thu, 26 Mar 2026 21:58:22 +0100 Message-ID: <20260326205824.11749-1-rayfraytech@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit mlx5_get_flow_namespace() can return NULL if the namespace is not available. Add a null check to prevent potential null pointer dereference when accessing ns->node. Signed-off-by: Oskar Ray-Frayssinet --- drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 1434b65d4746..503c9cc96a02 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -5216,6 +5216,10 @@ static int mlx5e_tc_nic_create_miss_table(struct mlx5e_priv *priv) ft_attr.level = MLX5E_TC_MISS_LEVEL; ft_attr.prio = 0; ns = mlx5_get_flow_namespace(priv->mdev, MLX5_FLOW_NAMESPACE_KERNEL); + if (!ns) { + netdev_err(priv->netdev, "failed to get flow namespace\n"); + return -EOPNOTSUPP; + } *ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr); if (IS_ERR(*ft)) { -- 2.43.0