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 3D53EC433E4 for ; Fri, 17 Jul 2020 04:20:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1BAD8206F4 for ; Fri, 17 Jul 2020 04:20:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726742AbgGQEUG (ORCPT ); Fri, 17 Jul 2020 00:20:06 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:48236 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726635AbgGQEUF (ORCPT ); Fri, 17 Jul 2020 00:20:05 -0400 Received: by mail-io1-f69.google.com with SMTP id r9so5688331ioa.15 for ; Thu, 16 Jul 2020 21:20:04 -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=j3PfTK/pr4L9iYESodCey/qnyjNi8Dw657O6Mf+Zg20=; b=RrameXs4AzPamOB3pbeAL0uUvPy2SUubt+kLYJFDL6No40zS8BhYCM2dthIwUS3iVD PlQ4/fp4fRxopDEkjeou3wH3dA2cvmtXLP/eYCT0FZHKqYuXCRkVyGJ9qL21bLZPwAy+ lN1G3B8ny/zfdXmiqc9+t0bx5Fyw3xvlcFk+zwRTtTuhINY6HYh+cI1lRvv4cDuyjYfC htRXaFopSipcxYp6D1W+WeSfW0RMZiWQTuZyMkzGmz/ocYxfJtf5SyyJgbbcqA0h2IA/ l71bB+LhgJ0LuBfIZBtcF8/eUQ8o0mB7/iSS16GZQjAEiIbAvjCz2okdJKrFs/LLGBCl G0LQ== X-Gm-Message-State: AOAM530rs4HELSVoneJBfpLkE0gwVbSu5LLlbGtJ3cR3o8/dSDxn0xWh MCmwahpCLwrG9wxaD+4wn8QDxNwFTpZhEARHLsIA9URk7jGa X-Google-Smtp-Source: ABdhPJw4xwEhl32rilyRDk1xXUs9He2nKD1ic8BW/rpDuSPhQLS4k36SMiiZktAg7h2AcmcBDhCU1OoPlc3a6bevTEdbZc6L7EZA MIME-Version: 1.0 X-Received: by 2002:a6b:8e56:: with SMTP id q83mr7806086iod.61.1594959604449; Thu, 16 Jul 2020 21:20:04 -0700 (PDT) Date: Thu, 16 Jul 2020 21:20:04 -0700 In-Reply-To: <000000000000264c6305a9c74d9b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a787b205aa9b7863@google.com> Subject: Re: INFO: rcu detected stall in tipc_release From: syzbot To: bp@alien8.de, davem@davemloft.net, fweisbec@gmail.com, hpa@zytor.com, jmaloy@redhat.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, tuong.t.lien@dektech.com.au, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org syzbot has bisected this issue to: commit 5e9eeccc58f3e6bcc99b929670665d2ce047e9c9 Author: Tuong Lien Date: Wed Jun 3 05:06:01 2020 +0000 tipc: fix NULL pointer dereference in streaming bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14641620900000 start commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=16641620900000 console output: https://syzkaller.appspot.com/x/log.txt?x=12641620900000 kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338 dashboard link: https://syzkaller.appspot.com/bug?extid=3654c027d861c6df4b06 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12948233100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11344c05100000 Reported-by: syzbot+3654c027d861c6df4b06@syzkaller.appspotmail.com Fixes: 5e9eeccc58f3 ("tipc: fix NULL pointer dereference in streaming") For information about bisection process see: https://goo.gl/tpsmEJ#bisection