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=-9.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 BAEB1C433DF for ; Thu, 16 Jul 2020 20:41:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 92F97207FB for ; Thu, 16 Jul 2020 20:41:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726425AbgGPUlF (ORCPT ); Thu, 16 Jul 2020 16:41:05 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:36910 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725999AbgGPUlF (ORCPT ); Thu, 16 Jul 2020 16:41:05 -0400 Received: by mail-io1-f72.google.com with SMTP id 63so4354540ioy.4 for ; Thu, 16 Jul 2020 13:41:04 -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=MJOPP91fI02T11IImb5jr+gjqr0RxeB4C7mwZ09S0ac=; b=VMuxuDBmbGN0TdnmJ6m2ULXRRc+8dw/k8ZpWsVZIx5YP1Qg3i9JCP95AGTHTo+wN2L TY3k8Lt+a0/h6bu5MVry8WrmPzra9lmkZkHQPhFaS4YVHz4Nm1sZvz5Jc55an5DLHj6D MPsy7qdUyZNW2clwwH9z49igWppXSIy9TXBBY6EPFZVkQ+J57Lw3CYnPUAzcVIDuUxDO DhS5+t7p6minMA8LxA4qGi7gCkFJ2CH60WDzEgP8BMeQ4pjDfiai5DOZzCokoq0deh6R zjcJcBPQd89fX1GR52UrEuHRBEPzEMuAjtZEVPL+Gu/EvSdTiGZ8Srd5O90yWnGfqa3f k58A== X-Gm-Message-State: AOAM533WVOR2E9gBbpWt2IrkWF13+YqvsKFZCi/gxBDzJR1lhVE2NlCX NLZgy4GM26PQRuOo22oEzTktyCyGEGjzw+mnxYhnM0t9AwV9 X-Google-Smtp-Source: ABdhPJzv2CNM+Kml3MecWCgob+RHzrgpODX2HxZNVirGkjOmGSYqaiVYO323EJ7wT8l+qtjglQjZCXtHQGB8uokL4mPFWgQs++oy MIME-Version: 1.0 X-Received: by 2002:a02:cf12:: with SMTP id q18mr7002957jar.3.1594932064186; Thu, 16 Jul 2020 13:41:04 -0700 (PDT) Date: Thu, 16 Jul 2020 13:41:04 -0700 In-Reply-To: <000000000000983e0405a9c7b870@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002077ca05aa950f9f@google.com> Subject: Re: INFO: rcu detected stall in __sys_sendmsg From: syzbot To: davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, vinicius.gomes@intel.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this issue to: commit 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22 Author: Vinicius Costa Gomes Date: Sat Sep 29 00:59:43 2018 +0000 tc: Add support for configuring the taprio scheduler bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=109a63cf100000 start commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=149a63cf100000 kernel config: https://syzkaller.appspot.com/x/.config?x=183dd243398ba7ec dashboard link: https://syzkaller.appspot.com/bug?extid=f517075b510306f61903 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11f01c1f100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16c40ba7100000 Reported-by: syzbot+f517075b510306f61903@syzkaller.appspotmail.com Fixes: 5a781ccbd19e ("tc: Add support for configuring the taprio scheduler") For information about bisection process see: https://goo.gl/tpsmEJ#bisection