From patchwork Wed Aug 18 14:25:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Colin King X-Patchwork-Id: 12444587 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2D1EC4320E for ; Wed, 18 Aug 2021 14:26:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8F79060EFF for ; Wed, 18 Aug 2021 14:26:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238786AbhHRO0f (ORCPT ); Wed, 18 Aug 2021 10:26:35 -0400 Received: from smtp-relay-canonical-0.canonical.com ([185.125.188.120]:51264 "EHLO smtp-relay-canonical-0.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238445AbhHRO0e (ORCPT ); Wed, 18 Aug 2021 10:26:34 -0400 Received: from localhost (1.general.cking.uk.vpn [10.172.193.212]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-0.canonical.com (Postfix) with ESMTPSA id 6C04A3F09F; Wed, 18 Aug 2021 14:25:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1629296758; bh=DTwOa3CWESrtiaTREvgjdVFPvu/DaRcGwqeFgJ0bd/w=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version:Content-Type; b=wRxLVlKI66AnEPnXtp3RyH+diZ7zXcUuwsiK070puzfLo3+jmY/sZLvi/QMx1D9l4 7osBIhWLx6VBGQWyAmffAlitNvNGMo02+XrX8myxZRqZCBZOGpN7mzDZRjr/KaxVk6 36ybNxMcWL6eF03a0agTApUqRg6KbLYJgq8rkwrN4dUEN6uaH4dtJQqYmZaJkMzzyO 5UZZZWt+vpbRPwP26RFrEtVbUYT3zNEXmOOT4tQVQ1NtKSYrSi0qoMgike2vW5G+pY gL6SUzO/ZC+MsB3CeiLC4YUpVju4eyT94+4bI5daHWP7Slf0z61Lu9CxxlvJ+g6X7o 1eyTRIiZhpFFw== From: Colin King To: Saeed Mahameed , Leon Romanovsky , "David S . Miller" , Jakub Kicinski , Vlad Buslov , Mark Bloch , Roi Dayan , netdev@vger.kernel.org, linux-rdma@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH][next] net/mlx5: Bridge: Fix uninitialized variable err Date: Wed, 18 Aug 2021 15:25:58 +0100 Message-Id: <20210818142558.36722-1-colin.king@canonical.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Colin Ian King A recent change removed the assignment of err to the return from the call mlx5_esw_bridge_lower_rep_vport_num_vhca_id_get, so now err is uninitialized. This is problematic in the switch statement where attr-id is SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, there is now a possibility of err not being assigned and the function returning a garbage value in err. Fix this by initializing err to zero. Addresses-Coverity; ("Uninitialized scalar variable") Fixes: ff9b7521468b ("net/mlx5: Bridge, support LAG") Signed-off-by: Colin Ian King Reviewed-by: Vlad Buslov --- drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c index 0c38c2e319be..4bf860f621f7 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bridge.c @@ -244,7 +244,7 @@ mlx5_esw_bridge_port_obj_attr_set(struct net_device *dev, struct netlink_ext_ack *extack = switchdev_notifier_info_to_extack(&port_attr_info->info); const struct switchdev_attr *attr = port_attr_info->attr; u16 vport_num, esw_owner_vhca_id; - int err; + int err = 0; if (!mlx5_esw_bridge_lower_rep_vport_num_vhca_id_get(dev, br_offloads->esw, &vport_num, &esw_owner_vhca_id))