From patchwork Fri Jul 2 14:26:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taehee Yoo X-Patchwork-Id: 12356255 X-Patchwork-Delegate: kuba@kernel.org 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 B9EBCC11F68 for ; Fri, 2 Jul 2021 14:27:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0CE26142D for ; Fri, 2 Jul 2021 14:27:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233101AbhGBOaB (ORCPT ); Fri, 2 Jul 2021 10:30:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41484 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233069AbhGBOaA (ORCPT ); Fri, 2 Jul 2021 10:30:00 -0400 Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D8D0C061762 for ; Fri, 2 Jul 2021 07:27:28 -0700 (PDT) Received: by mail-pf1-x42a.google.com with SMTP id g21so9049303pfc.11 for ; Fri, 02 Jul 2021 07:27:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Ae52QNnE0pHQHMrza2GfE9HuoTMbli8q1cxcOb1VCWs=; b=tQLJjd4T5G8PVo+StjSIf6mpCwfBtjO1/LESbFs6Cb6EuXm1jd3y4ezbteUI+sW2Hk BSKvd8I4FsuVMSXXhpes8W88oPV2ePaoRiWQovn2+ZzDGcASvFoGRE1hfR+rOyrNabmD 6hsWO7CIZG2nTmImpZcbuKAwREBU9/0Bl7q8xHbYN5dIl8qL9mzfWNQa7hzX72L4N570 OYVzHDypvdQTMTvnofDTXA4+MSjAItEx2CSFz/Ubf76kYZUGtzsKXgVy9+ZqaGFC/rIv 3/+q9hNoCKw5RZWlsWSoHIzA7xnJPcEBjnAVoslwF2zU9mc4PKorcwgxdFWcmlZtWP3m SstQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Ae52QNnE0pHQHMrza2GfE9HuoTMbli8q1cxcOb1VCWs=; b=PZr83q97tVZ9+VZKhCFgzS7EPuEJulo/ETlsApTgOiqNsJJB1tldHkaKDXGzbCqTrr dt0sLWpCHrOpWLmx8ye+yqMq4iL4gQT7dprEgapStXy6AzRwidDb/sEKKkCu/VBpPSE+ 9H2eO8ZAmUSnGz8n6TnJIt5old2IioZLGBqCBT703K1bNHEO3v3p4z5kcYym+oNIriZC /cqbyyzTSXSmyNQSjFpDnbS2JaqYFTeL2XalzZsIUnIP9zD2s5rredPaq8EAcRiBOU3N kSjf6uCJUFb7dmWLYeRPmyUJcZqu09IJLHNNDuwcF4dQEITozcWiTGULrVpBdFyZ8Csu ZpjQ== X-Gm-Message-State: AOAM530Zbjb+iNK3CcS5chLI4xNtYQvQ6q9lN6kr8+Q6IkxaZFLvSD/5 LWIcGi6wSGL1QyqeihGsAII= X-Google-Smtp-Source: ABdhPJyLsYnDdIe8Gy9RFoACQZY0DvExLuIY2ntl0HyABtJG1qsRHnI3CiqcqmW6o91cmOrVnnmPTA== X-Received: by 2002:a62:e50c:0:b029:2f9:b9b1:d44f with SMTP id n12-20020a62e50c0000b02902f9b9b1d44fmr5711054pff.42.1625236047986; Fri, 02 Jul 2021 07:27:27 -0700 (PDT) Received: from localhost.localdomain ([49.173.165.50]) by smtp.gmail.com with ESMTPSA id nr12sm12683747pjb.1.2021.07.02.07.27.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Jul 2021 07:27:27 -0700 (PDT) From: Taehee Yoo To: davem@davemloft.net, kuba@kernel.org, j.vosburgh@gmail.com, vfalico@gmail.com, andy@greyhouse.net, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, jarod@redhat.com, netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org Cc: ap420073@gmail.com Subject: [PATCH net 3/8] net: netdevsim: use xso.real_dev instead of xso.dev in callback functions of struct xfrmdev_ops Date: Fri, 2 Jul 2021 14:26:43 +0000 Message-Id: <20210702142648.7677-4-ap420073@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210702142648.7677-1-ap420073@gmail.com> References: <20210702142648.7677-1-ap420073@gmail.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org There are two pointers in struct xfrm_state_offload, *dev, *real_dev. These are used in callback functions of struct xfrmdev_ops. The *dev points whether bonding interface or real interface. If bonding ipsec offload is used, it points bonding interface If not, it points real interface. And real_dev always points real interface. So, netdevsim should always use real_dev instead of dev. Of course, real_dev always not be null. Test commands: ip netns add A ip netns exec A bash modprobe netdevsim echo "1 1" > /sys/bus/netdevsim/new_device ip link add bond0 type bond mode active-backup ip link set eth0 master bond0 ip link set eth0 up ip link set bond0 up ip x s add proto esp dst 14.1.1.1 src 15.1.1.1 spi 0x07 mode \ transport reqid 0x07 replay-window 32 aead 'rfc4106(gcm(aes))' \ 0x44434241343332312423222114131211f4f3f2f1 128 sel src 14.0.0.52/24 \ dst 14.0.0.70/24 proto tcp offload dev bond0 dir in Splat looks like: BUG: spinlock bad magic on CPU#5, kworker/5:1/53 lock: 0xffff8881068c2cc8, .magic: 11121314, .owner: /-1, .owner_cpu: -235736076 CPU: 5 PID: 53 Comm: kworker/5:1 Not tainted 5.13.0-rc3+ #1168 Workqueue: events linkwatch_event Call Trace: dump_stack+0xa4/0xe5 do_raw_spin_lock+0x20b/0x270 ? rwlock_bug.part.1+0x90/0x90 _raw_spin_lock_nested+0x5f/0x70 bond_get_stats+0xe4/0x4c0 [bonding] ? rcu_read_lock_sched_held+0xc0/0xc0 ? bond_neigh_init+0x2c0/0x2c0 [bonding] ? dev_get_alias+0xe2/0x190 ? dev_get_port_parent_id+0x14a/0x360 ? rtnl_unregister+0x190/0x190 ? dev_get_phys_port_name+0xa0/0xa0 ? memset+0x1f/0x40 ? memcpy+0x38/0x60 ? rtnl_phys_switch_id_fill+0x91/0x100 dev_get_stats+0x8c/0x270 rtnl_fill_stats+0x44/0xbe0 ? nla_put+0xbe/0x140 rtnl_fill_ifinfo+0x1054/0x3ad0 [ ... ] Fixes: 272c2330adc9 ("xfrm: bail early on slave pass over skb") Signed-off-by: Taehee Yoo --- drivers/net/netdevsim/ipsec.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/netdevsim/ipsec.c b/drivers/net/netdevsim/ipsec.c index 3811f1bde84e..b80ed2ffd45e 100644 --- a/drivers/net/netdevsim/ipsec.c +++ b/drivers/net/netdevsim/ipsec.c @@ -85,7 +85,7 @@ static int nsim_ipsec_parse_proto_keys(struct xfrm_state *xs, u32 *mykey, u32 *mysalt) { const char aes_gcm_name[] = "rfc4106(gcm(aes))"; - struct net_device *dev = xs->xso.dev; + struct net_device *dev = xs->xso.real_dev; unsigned char *key_data; char *alg_name = NULL; int key_len; @@ -134,7 +134,7 @@ static int nsim_ipsec_add_sa(struct xfrm_state *xs) u16 sa_idx; int ret; - dev = xs->xso.dev; + dev = xs->xso.real_dev; ns = netdev_priv(dev); ipsec = &ns->ipsec; @@ -194,7 +194,7 @@ static int nsim_ipsec_add_sa(struct xfrm_state *xs) static void nsim_ipsec_del_sa(struct xfrm_state *xs) { - struct netdevsim *ns = netdev_priv(xs->xso.dev); + struct netdevsim *ns = netdev_priv(xs->xso.real_dev); struct nsim_ipsec *ipsec = &ns->ipsec; u16 sa_idx; @@ -211,7 +211,7 @@ static void nsim_ipsec_del_sa(struct xfrm_state *xs) static bool nsim_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *xs) { - struct netdevsim *ns = netdev_priv(xs->xso.dev); + struct netdevsim *ns = netdev_priv(xs->xso.real_dev); struct nsim_ipsec *ipsec = &ns->ipsec; ipsec->ok++;