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_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 96AB1C10F13 for ; Thu, 11 Apr 2019 21:39:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E5282146F for ; Thu, 11 Apr 2019 21:39:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727035AbfDKVjC (ORCPT ); Thu, 11 Apr 2019 17:39:02 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:33034 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727044AbfDKVjB (ORCPT ); Thu, 11 Apr 2019 17:39:01 -0400 Received: by mail-io1-f72.google.com with SMTP id n15so6119409ioc.0 for ; Thu, 11 Apr 2019 14:39:01 -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=BuGuw+B3+zSCJRG2xo6aXZeyAoyiaNxoNELkYlLxkds=; b=dLHAseLn7+cZL4of4muT0YRxeKO+1cnQ17d3LKxPUr6l6dXlYU+HyYQaTc1KxAtRn3 7cFWWA5K1yKpyYGg7Q5427CuL68Tu55/Oge9Doi2lvTJDMWeoGOnzAe+O8bwsRXMurKz zPTPqOABzzICCd+vqoomQO1emFFi5t4fKlR5YjUIknruz5UQBNKhwvcY7NtEfuDzjqrn S1A4K3oVbCmGkGx1BlGhbfq6CR0lsz8Wn9wwxxxduBbnsGo2ctQXlr3qcW9/fZvtpd2D CT1/Jm3AXu5eNrZFgbVap/ItHfY382+yuc8FlWloOQ2o5EqA/K5XZsOR9WjCbWw/08qu ojmg== X-Gm-Message-State: APjAAAWSC3vuCl2wHTCFKGbAcxme6URTrkhTfFQBHjFd49wfb1sdVP6C 8q6Bi4ie3DJEPh6mrG0hT8vps1QyCukLzPJBjgvP9RsTKnXp X-Google-Smtp-Source: APXvYqzzOvrjkU3rc6F0ZjvCgbKzqgos6hIYsoL30G5AS8XDW7AN0ft+e91rUo8o2EytYbK9mgr5dzXYq8Dmg9EuxLfRsGy+czZM MIME-Version: 1.0 X-Received: by 2002:a24:440a:: with SMTP id o10mr2886517ita.31.1555018741065; Thu, 11 Apr 2019 14:39:01 -0700 (PDT) Date: Thu, 11 Apr 2019 14:39:01 -0700 In-Reply-To: <000000000000a819440574900515@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ae2c7605864803ff@google.com> Subject: Re: general protection fault in kvm_pv_send_ipi From: syzbot To: ast@kernel.org, daniel@iogearbox.net, davem@davemloft.net, hpa@zytor.com, jhs@mojatatu.com, jiri@resnulli.us, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, netdev@vger.kernel.org, pbonzini@redhat.com, rkrcmar@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vladbu@mellanox.com, x86@kernel.org, xiyou.wangcong@gmail.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 653cd284a8a857ddfcf24f5bc3bd204a229f6c9f Author: Vlad Buslov Date: Tue Aug 14 18:46:16 2018 +0000 net: sched: always disable bh when taking tcf_lock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16e25dbb200000 start commit: 05193597 Merge branch 'for-4.19' of git://git.kernel.org/p.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=15e25dbb200000 console output: https://syzkaller.appspot.com/x/log.txt?x=11e25dbb200000 kernel config: https://syzkaller.appspot.com/x/.config?x=3b576e333ca31bb2 dashboard link: https://syzkaller.appspot.com/bug?extid=86c0a866f80d88349f1f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137d861e400000 Reported-by: syzbot+86c0a866f80d88349f1f@syzkaller.appspotmail.com Fixes: 653cd284a8a8 ("net: sched: always disable bh when taking tcf_lock") For information about bisection process see: https://goo.gl/tpsmEJ#bisection