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,URIBL_BLOCKED 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 7ABA7C10F13 for ; Sun, 14 Apr 2019 11:06:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4093F2082E for ; Sun, 14 Apr 2019 11:06:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726354AbfDNLGB (ORCPT ); Sun, 14 Apr 2019 07:06:01 -0400 Received: from mail-it1-f198.google.com ([209.85.166.198]:42040 "EHLO mail-it1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725807AbfDNLGB (ORCPT ); Sun, 14 Apr 2019 07:06:01 -0400 Received: by mail-it1-f198.google.com with SMTP id r186so13250602ita.7 for ; Sun, 14 Apr 2019 04:06:00 -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=tMe5p/G2UpkUBhQmMPxUflZU5IRPVS5LI2L3rzJjq1c=; b=ZKpKHHEJNe2w8U4JctIugEozc0fslmIy1eMgoIcO5nuEUWWv0gEyZF9S25YJd/QyIo q+MC03ITggdb1cEJgOFrv2/2p72knM3GnZSkEtRckePrsPa+E5B9RivyXvE+z0cytrx0 +QbjoFS7Ci2PiI6FmgTVY08sUQgrLqM289ZuBRdP6eYgccRymDIVLZM1wieh8KRnrbSd QxerV7Td1btyRC33n9cLtbtf5M1Dvik6L1ZVi+qG89qgUR/aCciHO5Abo1qs5gX3ZgI0 +0Ww6fNWQhcFA7aIyeqO3ZnnapCcaLD8N4onEBqWI4e2ntvkAXe/WVthYrhzWy/yUdu/ Oh7g== X-Gm-Message-State: APjAAAV1zA07vPv8bYRGdQnXxFa5G3826WChvDCd89fra2u0ES6Ow2uH D8G2x3I+yO3D/zOwVB7lBYtvCmT0nvkpRHQ6PWAjdsjJ0Mkk X-Google-Smtp-Source: APXvYqzV/b5PqbTpCrU3D1CssIWSx/UWctl9u3xPacVTo2B66jXr16fyyOs2XL5ycWCdAQqYD48qDndQUTtoJhciAmr+GNaGlFMt MIME-Version: 1.0 X-Received: by 2002:a02:8243:: with SMTP id q3mr12014395jag.6.1555239960611; Sun, 14 Apr 2019 04:06:00 -0700 (PDT) Date: Sun, 14 Apr 2019 04:06:00 -0700 In-Reply-To: <000000000000d05a78056873bc47@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000064948e05867b8503@google.com> Subject: Re: WARNING in kvm_arch_vcpu_ioctl_run (3) From: syzbot To: akpm@linux-foundation.org, bp@alien8.de, gleb@kernel.org, hpa@zytor.com, kernellwp@gmail.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, paulmck@linux.vnet.ibm.com, pbonzini@redhat.com, peterz@infradead.org, rkrcmar@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, torvalds@linux-foundation.org, x86@kernel.org 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 706249c222f68471b6f8e9e8e9b77665c404b226 Author: Peter Zijlstra Date: Fri Jul 24 13:06:37 2015 +0000 locking/static_keys: Rework update logic bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=175cc587200000 start commit: 1d2ba7fe Merge tag 'fbdev-v4.19-rc7' of https://github.com.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=14dcc587200000 console output: https://syzkaller.appspot.com/x/log.txt?x=10dcc587200000 kernel config: https://syzkaller.appspot.com/x/.config?x=c0af03fe452b65fb dashboard link: https://syzkaller.appspot.com/bug?extid=760a73552f47a8cd0fd9 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156ad231400000 Reported-by: syzbot+760a73552f47a8cd0fd9@syzkaller.appspotmail.com Fixes: 706249c222f6 ("locking/static_keys: Rework update logic") For information about bisection process see: https://goo.gl/tpsmEJ#bisection