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[81.237.238.191]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a2a068f5f1sm842596e87.55.2026.03.26.13.59.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2026 13:59:37 -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 3/3] net/mlx5: Add null check for flow namespace in mlx5_cmd_set_slave_root_fdb Date: Thu, 26 Mar 2026 21:58:24 +0100 Message-ID: <20260326205824.11749-3-rayfraytech@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260326205824.11749-1-rayfraytech@gmail.com> References: <20260326205824.11749-1-rayfraytech@gmail.com> Precedence: bulk X-Mailing-List: netdev@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/fs_cmd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c index c348ee62cd3a..c52d8ca6aa0b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c @@ -186,6 +186,8 @@ static int mlx5_cmd_set_slave_root_fdb(struct mlx5_core_dev *master, } else { ns = mlx5_get_flow_namespace(slave, MLX5_FLOW_NAMESPACE_FDB); + if (!ns) + return -EOPNOTSUPP; root = find_root(&ns->node); MLX5_SET(set_flow_table_root_in, in, table_id, root->root_ft->id); -- 2.43.0