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=-5.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 ED8ABC072B5 for ; Tue, 21 May 2019 21:08:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C8F402173E for ; Tue, 21 May 2019 21:08:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727603AbfEUVIB (ORCPT ); Tue, 21 May 2019 17:08:01 -0400 Received: from mail-it1-f197.google.com ([209.85.166.197]:34945 "EHLO mail-it1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727136AbfEUVIB (ORCPT ); Tue, 21 May 2019 17:08:01 -0400 Received: by mail-it1-f197.google.com with SMTP id m188so146589ita.0 for ; Tue, 21 May 2019 14:08:01 -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=UzmPeUGaB8JKZJ9CS0AWltu9MikJ5xxP1GF6GVzJW6I=; b=I86J0ocY/mjclgGyscYp2BVQrrakOQVlQOYDIGEaB2oDHHZICAuUI0BsZ4ex5UAXfH BHptGQY4hD3TcHKvPgg3nFKxOP4Q5Y9rv8FkYve3vpTRdocJDFHRwv0mBZ7V5IIPO4cw 4STyz36Srj13w6M0SKdSCzzTy8Pd/oqYnaeHDjZzAkqqFlDwueIdtyThFRnkbopKaXwY Lgrd8R0RIo/boKUOvd4lSBiCMjj0R/Chlw41+7Hj1viKdLUuV9/bXFOpwQ8n8ZtKkFP0 69FC/7X9iLpOPZR4XzUo1lDz66MZk3gK/Sw6kOVYVB2H7u/ocqJMMVlWelosZe635/Si 2lzg== X-Gm-Message-State: APjAAAXyl02mfUfVA2GQ3NIQSTk268WQJ6ke3oidx+NNgnnA2gvBh9Vs gPbul2zwB1uZkYWBB4WJG5mbu/QXFPA7VLM+BDkmapj/L4RP X-Google-Smtp-Source: APXvYqwtcVeO8IOlYtpHb+pYSw2wdqPB0c8EwcnSxnMt61P6oQuZ5TprV3iiiFbK3fSCqQiDaNir0ZBnxV+7ib/d+4hx9iNpXOLP MIME-Version: 1.0 X-Received: by 2002:a24:7309:: with SMTP id y9mr5819441itb.162.1558472880669; Tue, 21 May 2019 14:08:00 -0700 (PDT) Date: Tue, 21 May 2019 14:08:00 -0700 In-Reply-To: <000000000000ac9447058924709c@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000071c8a105896c3ef2@google.com> Subject: Re: WARNING: locking bug in rhashtable_walk_enter From: syzbot To: davem@davemloft.net, hujunwei4@huawei.com, jon.maloy@ericsson.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net, wangxiaogang3@huawei.com, ying.xue@windriver.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 bisected this bug to: commit 7e27e8d6130c5e88fac9ddec4249f7f2337fe7f8 Author: Junwei Hu Date: Thu May 16 02:51:15 2019 +0000 tipc: switch order of device registration to fix a crash bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1285d39ca00000 start commit: f49aa1de Merge tag 'for-5.2-rc1-tag' of git://git.kernel.o.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1185d39ca00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1685d39ca00000 kernel config: https://syzkaller.appspot.com/x/.config?x=fc045131472947d7 dashboard link: https://syzkaller.appspot.com/bug?extid=6440134c13554d3abfb0 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10c586bca00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14759fb2a00000 Reported-by: syzbot+6440134c13554d3abfb0@syzkaller.appspotmail.com Fixes: 7e27e8d6130c ("tipc: switch order of device registration to fix a crash") For information about bisection process see: https://goo.gl/tpsmEJ#bisection