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=-6.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_PASS,URIBL_BLOCKED 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 ED6BAC43387 for ; Sun, 30 Dec 2018 11:34:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AAA7E20866 for ; Sun, 30 Dec 2018 11:34:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=cumulusnetworks.com header.i=@cumulusnetworks.com header.b="cwV7lJh+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726233AbeL3Lej (ORCPT ); Sun, 30 Dec 2018 06:34:39 -0500 Received: from mail-wm1-f68.google.com ([209.85.128.68]:50228 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725971AbeL3Lej (ORCPT ); Sun, 30 Dec 2018 06:34:39 -0500 Received: by mail-wm1-f68.google.com with SMTP id n190so21913573wmd.0 for ; Sun, 30 Dec 2018 03:34:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cumulusnetworks.com; s=google; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=c9KG5owWNPdBn7AYfRPUjZUIbVn9OuA4tUdeEItY8O0=; b=cwV7lJh+uu+lBmMsGzTiHe8Dua3oPYrf8GrPFCzERh0uYKWKGLGxaN0+VoXreglmac GKAQu+O74pE/JfAgrDp9Swxb9wZsBKNlQmWsbGx82cmqas9WnRoFtc22gzyH4jJ95HUg eQEaZ2dJ7GX//QTdp3ZcwVz38xdLm/uRonC00= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=c9KG5owWNPdBn7AYfRPUjZUIbVn9OuA4tUdeEItY8O0=; b=V4E6yWhyEq7y6eYCpCa5DX2nVCvhshOd9vgReh4w6QoT3lI9fzm9cCHBO44LMNOWd+ nojXZJqKlS4EBa1QsKJr9JRU4Z+TIeGbfuKWeBhKaXFeSZP5S6PE0/72Lv5ozcpAsFTQ VdsO6p6an/uoGMYq+gkSS+QnfZ+TpjA+IwC+g2cEWTUUEmG41NIanBayI1Yqx185DBBo Fh4DjGQZoTh2pT8zY1ulUJF7aKJU3JIg2cERCaYLPwZWHYolW+6H7VIlXi3nwmffreCW IA+sSl8GrehylHxWLboEn0maIFGTbVK8VpLqQAmZytSMDGda2qzVT3rGsQnCiqt9dbB+ oZpA== X-Gm-Message-State: AJcUukfggYi+j5K79d+ek+1P1t9xFADj4QuiU10kitO34+Xxj61K7Dzh Ncs3Of7jwRAQtmPlwEvFNnidmA== X-Google-Smtp-Source: AFSGD/WVmzgrSvK1o/cJ/pp2K0c9Eia6iFElRw3v2y/hTMYG844kU4Bf0qagyJ3NedF0Aelt1LHi4g== X-Received: by 2002:a1c:ce0e:: with SMTP id e14mr27605907wmg.53.1546169677565; Sun, 30 Dec 2018 03:34:37 -0800 (PST) Received: from [192.168.0.107] (95-42-17-99.ip.btc-net.bg. [95.42.17.99]) by smtp.gmail.com with ESMTPSA id d11sm2028951wrw.25.2018.12.30.03.34.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 30 Dec 2018 03:34:35 -0800 (PST) Subject: Re: general protection fault in fdb_find_rcu To: syzbot , bridge@lists.linux-foundation.org, davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, roopa@cumulusnetworks.com, syzkaller-bugs@googlegroups.com References: <0000000000004e8a91057e355803@google.com> From: Nikolay Aleksandrov Message-ID: <663bc6d0-f6ec-796d-54bb-b9afa3c0bce1@cumulusnetworks.com> Date: Sun, 30 Dec 2018 13:34:34 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: <0000000000004e8a91057e355803@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 30/12/2018 06:01, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:    90cadbbf341d Merge git://git.kernel.org/pub/scm/linux/kern.. > git tree:       net-next > console output: https://syzkaller.appspot.com/x/log.txt?x=1745c69b400000 > kernel config:  https://syzkaller.appspot.com/x/.config?x=9d41c8529d7e7362 > dashboard link: https://syzkaller.appspot.com/bug?extid=017b1f61c82a1c3e7efd > compiler:       gcc (GCC) 8.0.1 20180413 (experimental) > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15babaab400000 > C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14c6142d400000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+017b1f61c82a1c3e7efd@syzkaller.appspotmail.com > Ah yes, good catch. We've missed this obvious bug during the review. A patch is on its way, just need to run a few tests. Cheers, Nik