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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 69175C282C2 for ; Thu, 7 Feb 2019 10:36:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 349932147C for ; Thu, 7 Feb 2019 10:36:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AWexTA4g" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727057AbfBGKgo (ORCPT ); Thu, 7 Feb 2019 05:36:44 -0500 Received: from mail-pg1-f194.google.com ([209.85.215.194]:44472 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726750AbfBGKgo (ORCPT ); Thu, 7 Feb 2019 05:36:44 -0500 Received: by mail-pg1-f194.google.com with SMTP id y1so4298166pgk.11 for ; Thu, 07 Feb 2019 02:36:44 -0800 (PST) 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 :mime-version:content-transfer-encoding; bh=h/T6YhAnSSHWjJ8m48dtTijGOyBJuIkhQLQKWi74r5o=; b=AWexTA4gR26F494oQQfhVwo/5f7Y6sHYMwsEP3iHjYu6m3nuq8QDLhcGrE7pHeNUI+ zCP2+t6ydQ6vOqxyKIxgzaa/SeBl5er9kgs5Rjw63j/N8al7pyiOXBh55YEyM3eW3iVD 2AkdvaZ0/LkyEzk4XmqK0PyfOmE4vudgmKyTTsD1oEcvzMTpWilmPEM/DP3hXNYYDAYq j6anXVplgvtjtig6itKa6AnuQDrAj7bzzZqKNqyve7A5rVEbqx6YkQlKj/Lr+QIoPsoQ XRcPtyGjQHXdNyUwMG3Z+Tjfcp3eM+MbYBUjB1aHZoS1oyCi3I9hNChoYMOeinzfDIzf KErw== 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:mime-version:content-transfer-encoding; bh=h/T6YhAnSSHWjJ8m48dtTijGOyBJuIkhQLQKWi74r5o=; b=gX/2V6yEqr12bZxMNZODyWnI91mqJhPvJ0Mt6CBCKrYWo+NViXHiJ11O9swrMx011P 7tsr66uYrtizWTmVJexd1H7/xaYvvtf14FymfxIpc/ivPBFG9uT0o0agA5fnmnAXeICZ 0eakBUqQYxF1xdnnxxCNNqAv6cG8tb/FuMwf9qH0NC6kY5pYjXw+2+/FP1+clPX9pdEW ykZxqwHx1DebBYCCFtevaChEoxY/+CWiYoCvHmeNGDRPSugzRDaNXVfQmMxyWcFRTwHu oX/GhFh3GjmwOmeDn6ol1YYy/h30zkm6bvk4WuZTtTlZDj+FVZZPZN/lNJX5/p7NgCED nUhw== X-Gm-Message-State: AHQUAuZzy9kDJCMzjnp+NayAMhhkZU2U/TTXDibp7EbDYZHTMJ6S71l3 nPvMApmhhYqDoVXfvBWReZbVFwFHyP8= X-Google-Smtp-Source: AHgI3Iaq3hs2OYAHaazbIg7XjXkvsWGONUksA0E/ZdFh+7nSsk1NGDfMQqLThu0Z4Wn5ZwC882Pweg== X-Received: by 2002:a63:3c58:: with SMTP id i24mr14426856pgn.284.1549535803787; Thu, 07 Feb 2019 02:36:43 -0800 (PST) Received: from dhcp-12-139.nay.redhat.com ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id k64sm7490703pfj.69.2019.02.07.02.36.41 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 07 Feb 2019 02:36:43 -0800 (PST) From: Hangbin Liu To: netdev@vger.kernel.org Cc: Stefano Brivio , David Miller , Eric Dumazet , Hangbin Liu Subject: [PATCH v2 net 0/2] fix two kernel panics when disabled IPv6 on boot up Date: Thu, 7 Feb 2019 18:36:09 +0800 Message-Id: <20190207103611.25046-1-liuhangbin@gmail.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190206125111.5286-1-liuhangbin@gmail.com> References: <20190206125111.5286-1-liuhangbin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When disabled IPv6 on boot up, since there is no ipv6 route tables, we should not call rt6_lookup. Fix them by checking if we have inet6_dev pointer on netdevice. v2: Fix idev reference leak, declarations and code mixing as Stefano, Eric pointed. Since we only want to check if idev exists and not reference it, use __in6_dev_get() insteand of in6_dev_get(). Hangbin Liu (2): geneve: should not call rt6_lookup() when ipv6 was disabled sit: check if IPv6 enabled before call ip6_err_gen_icmpv6_unreach() drivers/net/geneve.c | 6 ++++++ net/ipv6/sit.c | 8 +++++++- 2 files changed, 13 insertions(+), 1 deletion(-) -- 2.19.2