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,URIBL_BLOCKED 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 A3F0DC433E1 for ; Fri, 24 Jul 2020 03:28:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81E8F207BB for ; Fri, 24 Jul 2020 03:28:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726692AbgGXD2G (ORCPT ); Thu, 23 Jul 2020 23:28:06 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:36684 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726437AbgGXD2G (ORCPT ); Thu, 23 Jul 2020 23:28:06 -0400 Received: by mail-io1-f72.google.com with SMTP id h205so5450338iof.3 for ; Thu, 23 Jul 2020 20:28:04 -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=Ont9djuNY0GU/qTuUTW3soxu8Qb4Ubkk1v7mFHEioWA=; b=aTdZFoWggYl+KeBPRbaTybgVC0LHpms6JEyvRTsUCMEcx9TrWBM3oKL8DtzeJbp0tx VMKrhrvOcCkJWO5gHfBH84noVNKUEk6/aX6gL34mgAHcj2OlkGKaDFw50XFBj1E6yE/J tFXA/KZBSbFy4h8MvQqepBdNBnfE+KvKstsF5q8d0Yzl7CKHu8MFD22lhL22ADeBryiy 6m1hIbaOyIJRFPz2gJZAZUUK5IMdPrE0SCCUIDDdJSbrGAZ8gPvT586rLImCq9kmKA8e QZjshklK3K+tO4NjSPDGBuLQVeyPT+hJyeTfo2brNgiRnBlLV1gmrEtscoETe83cxfXQ OofA== X-Gm-Message-State: AOAM533wRfoqHJyL3fXRIntrwyQkq+MkG0/M1JowQ0/qTGRh6RzyNwUV 0kwoU22c0NNkBo6zxT9hnUSXmZnN0A2+mc93xzIqqGYKK8im X-Google-Smtp-Source: ABdhPJyJhGuaT6ThvP5DAjoFMNwap5je5huhz7wXrzNaWbB0+3IhSTSajSiENIBUlIaXs4NeyJWylMSwM1m6OQPseXtVJY63B+ii MIME-Version: 1.0 X-Received: by 2002:a92:cf06:: with SMTP id c6mr8246821ilo.73.1595561284301; Thu, 23 Jul 2020 20:28:04 -0700 (PDT) Date: Thu, 23 Jul 2020 20:28:04 -0700 In-Reply-To: <0000000000000a8e8605a22a1ae0@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000091792505ab278f0a@google.com> Subject: Re: INFO: rcu detected stall in netlink_sendmsg (4) From: syzbot To: a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org, davem@davemloft.net, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, mareklindner@neomailbox.ch, mingo@redhat.com, netdev@vger.kernel.org, rostedt@goodmis.org, sven@narfation.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vinicius.gomes@intel.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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=16d46e1b100000 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=11d46e1b100000 kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 dashboard link: https://syzkaller.appspot.com/bug?extid=0fb70e87d8e0ac278fe9 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1023588f100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1647a88f100000 Reported-by: syzbot+0fb70e87d8e0ac278fe9@syzkaller.appspotmail.com Fixes: 5a781ccbd19e ("tc: Add support for configuring the taprio scheduler") For information about bisection process see: https://goo.gl/tpsmEJ#bisection