From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 CD6E1C10F00 for ; Wed, 27 Mar 2019 18:55:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9DB38205C9 for ; Wed, 27 Mar 2019 18:55:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553712926; bh=Av8FVbQD9mdECx5npEmWuDHGXtnvPbZyKyG9vCWTED0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=gO00WoRmBcm1cAMlbhXEwUBkcXa5JP6Yqy5IysC56ZZNxNi+GR4PUdJOMHcTkpQbC UqGJ5r1tzdlCXk9N7P6ofW1qLggwVDwZkDvF8JzNqfksBQ4qvJtVe/B3TMqUjkCW9f +aCgpBl25c/lPc0wLQ5Pa+uRnqE7qoukBMuWm/2w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390494AbfC0SzU (ORCPT ); Wed, 27 Mar 2019 14:55:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:60898 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389524AbfC0SQj (ORCPT ); Wed, 27 Mar 2019 14:16:39 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B173D2087C; Wed, 27 Mar 2019 18:16:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553710598; bh=Av8FVbQD9mdECx5npEmWuDHGXtnvPbZyKyG9vCWTED0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YcsjLdnmW+oS8qgKdVTYobEsLtnYyRo2UcuaveB8ng/wyghRuh9eGkBZNR3Nsudoz jPtSz8Fl7RkxnZ3jkfT0EYwOGb7wixg0uGGAwEfRF3+pYlDYN/6hnQ6DCDm6NslLg2 7Ztjo6NCOaKBGrX2Hqc5A8onwS1+thSJ5xasb7NQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tonghao Zhang , Eli Cohen , Saeed Mahameed , Sasha Levin , netdev@vger.kernel.org, linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 007/123] net/mlx5: Avoid panic when setting vport mac, getting vport config Date: Wed, 27 Mar 2019 14:14:31 -0400 Message-Id: <20190327181628.15899-7-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190327181628.15899-1-sashal@kernel.org> References: <20190327181628.15899-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Tonghao Zhang [ Upstream commit 6e77c413e8e73d0f36b5358b601389d75ec4451c ] If we try to set VFs mac address on a VF (not PF) net device, the kernel will be crash. The commands are show as below: $ echo 2 > /sys/class/net/$MLX_PF0/device/sriov_numvfs $ ip link set $MLX_VF0 vf 0 mac 00:11:22:33:44:00 [exception RIP: mlx5_eswitch_set_vport_mac+41] [ffffb8b7079e3688] do_setlink at ffffffff8f67f85b [ffffb8b7079e37a8] __rtnl_newlink at ffffffff8f683778 [ffffb8b7079e3b68] rtnl_newlink at ffffffff8f683a63 [ffffb8b7079e3b90] rtnetlink_rcv_msg at ffffffff8f67d812 [ffffb8b7079e3c10] netlink_rcv_skb at ffffffff8f6b88ab [ffffb8b7079e3c60] netlink_unicast at ffffffff8f6b808f [ffffb8b7079e3ca0] netlink_sendmsg at ffffffff8f6b8412 [ffffb8b7079e3d18] sock_sendmsg at ffffffff8f6452f6 [ffffb8b7079e3d30] ___sys_sendmsg at ffffffff8f645860 [ffffb8b7079e3eb0] __sys_sendmsg at ffffffff8f647a38 [ffffb8b7079e3f38] do_syscall_64 at ffffffff8f00401b [ffffb8b7079e3f50] entry_SYSCALL_64_after_hwframe at ffffffff8f80008c and [exception RIP: mlx5_eswitch_get_vport_config+12] [ffffa70607e57678] mlx5e_get_vf_config at ffffffffc03c7f8f [mlx5_core] [ffffa70607e57688] do_setlink at ffffffffbc67fa59 [ffffa70607e577a8] __rtnl_newlink at ffffffffbc683778 [ffffa70607e57b68] rtnl_newlink at ffffffffbc683a63 [ffffa70607e57b90] rtnetlink_rcv_msg at ffffffffbc67d812 [ffffa70607e57c10] netlink_rcv_skb at ffffffffbc6b88ab [ffffa70607e57c60] netlink_unicast at ffffffffbc6b808f [ffffa70607e57ca0] netlink_sendmsg at ffffffffbc6b8412 [ffffa70607e57d18] sock_sendmsg at ffffffffbc6452f6 [ffffa70607e57d30] ___sys_sendmsg at ffffffffbc645860 [ffffa70607e57eb0] __sys_sendmsg at ffffffffbc647a38 [ffffa70607e57f38] do_syscall_64 at ffffffffbc00401b [ffffa70607e57f50] entry_SYSCALL_64_after_hwframe at ffffffffbc80008c Fixes: a8d70a054a718 ("net/mlx5: E-Switch, Disallow vlan/spoofcheck setup if not being esw manager") Cc: Eli Cohen Signed-off-by: Tonghao Zhang Reviewed-by: Roi Dayan Acked-by: Saeed Mahameed Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin --- drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c index 2aec0c021b6c..d2914116af8e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -1719,7 +1719,7 @@ int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw, u64 node_guid; int err = 0; - if (!MLX5_CAP_GEN(esw->dev, vport_group_manager)) + if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager)) return -EPERM; if (!LEGAL_VPORT(esw, vport) || is_multicast_ether_addr(mac)) return -EINVAL; @@ -1793,7 +1793,7 @@ int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw, { struct mlx5_vport *evport; - if (!MLX5_CAP_GEN(esw->dev, vport_group_manager)) + if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager)) return -EPERM; if (!LEGAL_VPORT(esw, vport)) return -EINVAL; -- 2.19.1