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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 7B73DC4321D for ; Mon, 20 Aug 2018 04:31:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2636021531 for ; Mon, 20 Aug 2018 04:31:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2636021531 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726077AbeHTHpE (ORCPT ); Mon, 20 Aug 2018 03:45:04 -0400 Received: from mail-it0-f69.google.com ([209.85.214.69]:50751 "EHLO mail-it0-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725942AbeHTHpE (ORCPT ); Mon, 20 Aug 2018 03:45:04 -0400 Received: by mail-it0-f69.google.com with SMTP id n194-v6so13462695itn.0 for ; Sun, 19 Aug 2018 21:31:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=e0pBrixIBY55EOp6Pbjz8NZ7v9zJN7+yKL6cLHXZYaM=; b=BlgsU7Oaf1h465Ug6hcVMjXg3gMvrns3QI4LBjhjO8WG5tgYvv9io3nEcGsjfntrdi mKngrC3N2Rxz/3jk34TvU1Esa6JtAjs3rm8WEncQg5PeDucLEJVFm0mlKRCV1gaYUuLv OYnesSVOkiANjJuofylYQnUOmWZCnJsKGSgIH3lUJqz5Cb5CYG7V4VXw3QF/8X2+3D+4 dGqCbbeGsfJXqgD4R5mtcLWMNp7QtRH588pRfew+rdZI3ekczNksd7IeNGdNUKPWjKSU X2DPhscqi9Q+XZwqqHVxzJ1u38DQ+9Wka8ekWXP2bHPb8VjZwOcCIXzkJGaGiUmhK1sC /gUQ== X-Gm-Message-State: AOUpUlEaKull+wVb8ekqBdeuicW/C/+Q72ncWCQnMLpWvNPH21pMCHBG nkpkYF+0iyVz+LjQP1i3oUD6FM3Us/Qez/B2lTy9BIa8gltE X-Google-Smtp-Source: AA+uWPxOUbQzYQUdUNRMIfTi7bF9c5Kf5QP3svShm5HOYti/BsEl5Dnp1qNerDAekH0WmfV5IaXM4CLzzZgoTNnWfQAh2nbBLnMc MIME-Version: 1.0 X-Received: by 2002:a24:39c2:: with SMTP id l185-v6mr3881076ita.51.1534739462559; Sun, 19 Aug 2018 21:31:02 -0700 (PDT) Date: Sun, 19 Aug 2018 21:31:02 -0700 In-Reply-To: <00000000000056268e05737dcb95@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007d22100573d66078@google.com> Subject: Re: unregister_netdevice: waiting for DEV to become free (2) From: syzbot To: ddstreet@ieee.org, dvyukov@google.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: d7857ae43dcc Add linux-next specific files for 20180817 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=13c72fce400000 kernel config: https://syzkaller.appspot.com/x/.config?x=4b10cd1ea76bb092 dashboard link: https://syzkaller.appspot.com/bug?extid=30209ea299c09d8785c9 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=15df679a400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15242741400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+30209ea299c09d8785c9@syzkaller.appspotmail.com IPVS: stopping master sync thread 4657 ... IPVS: stopping master sync thread 4663 ... IPVS: sync thread started: state = MASTER, mcast_ifn = syz_tun, syncid = 0, id = 0 IPVS: sync thread started: state = MASTER, mcast_ifn = syz_tun, syncid = 0, id = 0 IPVS: stopping master sync thread 4664 ... unregister_netdevice: waiting for lo to become free. Usage count = 1