From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f47.google.com (mail-lf1-f47.google.com [209.85.167.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4DDE03A7F55 for ; Thu, 26 Mar 2026 20:59:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774558782; cv=none; b=uk3xjijp4CFNW8scK1v3EyyddLWhJBZLkuZI3KY3mNI3nbK/tLfvUKM6AT0SWTKXwLs5yNxJqTxiNyd+9NZar/a+WUiCzafy4lD416XIns10vXO/9Y57ainUqspESei9byYzgftGo4wEhsERz8A+0SsOWlEbVKH4DtDcndRLPno= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774558782; c=relaxed/simple; bh=pdWhTr13yB2TeUjNjTSrTEV1W426Ty4TykkxZVSVbJc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=loSbCt10FKfir6unoxKSyfY0d1x8GMXJhoX5P626Zj/dxVqDDaUVxFlosrd8XoWb1jjxVweQREN2o1QE1OD6Eua1YC5kSUqSJkbYTUjDGWsn6nXRVLV0vUur7RKtKYBMgdlXNWuvmwN8jysDetwnTnniwg6CnVFeH9cq8vMTMu4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=ltCieQgE; arc=none smtp.client-ip=209.85.167.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ltCieQgE" Received: by mail-lf1-f47.google.com with SMTP id 2adb3069b0e04-5a27daa652fso1788373e87.0 for ; Thu, 26 Mar 2026 13:59:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774558779; x=1775163579; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=R36FhGs7Uipw1Isw8Vzai14giCROBLkpYdIr0Y3wTOA=; b=ltCieQgEYDSmrv8WRGjF8kRHdcyQMQjDiK98tZmlU75UpeqLlw76qg9I2a5/ThozhC 2RyyYshj1diPaoD62z6n05Hd3pAT/cMKJEsJIO78d9X33KNNVrjeK6X4ozAIYXu9YXRu oXSRZ4ZEdUcSNfdcu98IkQJ4MbTDAjmYpgPL4a8DNIm9GoU80GJ6L3akuftnOHbDr2/j yUF4AJXbfiQ3Sg7Yegl3cAf6Gx+abL/WFrCyJFIa0a5R2hJK8/CVTWBvfSGZu+dTdB+D +sBFo5v28vvvend+LdjMOX4KC123h+KUN9uUuF6OTg5Kyou4v/fMVjgbx4i3asg6VaxG nAvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774558779; x=1775163579; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=R36FhGs7Uipw1Isw8Vzai14giCROBLkpYdIr0Y3wTOA=; b=YVR1BeDQgdvH7n3ycxkFMRK84rkD6GJrN6GA7+EKL7InwWuullBMVORLCdRib3AQYd 6Oe+y51HONNRGvQiRFlGbj2syu/383RxqKfrScNQaBOp7o3fteBME9oRuU/hH6NjxnUT +j5V318PNyJw+vsphvxc7wmqqw9Kt95FE4cLrMBe9oUQpIQogJUq70CP6kNXROaHEFeY YfcTwDYL+S6irIsCBLU/kbiJo24k069EorzNKnBDQRbkFZafvjIoaEF5DYD8KfT4YJzw L1yXT0veIR6KjygNiYLzbGbDMGpRjDYxxkpfikmSnlNpPi0IZV8p7nihhcD/tc6vo8Z0 tT3A== X-Forwarded-Encrypted: i=1; AJvYcCVVg6JW9DZCieoJ05uiiivSWjDkaimO+/sj6ICZx/vDdNF9KlCrOagYnKZx7LpGZ/A6W5zlvEyB2typpzE=@vger.kernel.org X-Gm-Message-State: AOJu0YybtZBv9eHS6SLaLX2cwbIEFEJRkIyTyP/Fs+l1l4ST+9PkouWx 1kaXqWYQQdsJ711aZ0TTLMYOP0khAVaZvXoPJdG/S/QRY4C6sUTPZKMV X-Gm-Gg: ATEYQzyYvM4NuqpKRNpgoDH2ZJuvaAvfzseomNfxMLFjC13ru0oLEffvGtpbrVpmp52 gAS+Gpitii4Cw1FiuytvnQmtxU4zQFIDefUA0BY95QY2gSqsQmk2BlQlB9BUYjerHx7OLOG9Fb+ pwsObELb9fPZupbYv/VtgFvw09pNZPGjH199E+k4LPvqgoUQE9el7ybphI30RaFwPYYOSyxs4S1 ChHG8LMWwhv6huUxS/I7Y4j79DA23jIyGc6rgL7I9eY7ZdXGsxuSYn6HZZk9A/oyhDIMco5bHcF DdEapiRELjuNMOWfyRvVn7Zbf8BqDbBZAEZPmiofRagnz179JVEbVPKHN3MhPUFyV3npMj7pS3+ RVdkvpVphbWTNVkvYzOrDlHKonivLTQtLuCUgHZkfpqY2VCBByv5xl2T8IoRKfutwolaKzhRL5j TOqoeHHHc9IVxECW/JRI1heLCunPjOsw/qtEB2GdCeNA5CNKHJbgffyqpSoG8lo74D4hx8BHw3Y aPg X-Received: by 2002:a05:6512:1381:b0:5a2:aa50:4c55 with SMTP id 2adb3069b0e04-5a2ab7e9143mr12706e87.8.1774558779239; Thu, 26 Mar 2026 13:59:39 -0700 (PDT) Received: from localhost.localdomain (81-237-238-191-no600.tbcn.telia.com. [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: 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/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