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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 089D5C433E0 for ; Thu, 4 Jun 2020 13:09:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D5B2B206C3 for ; Thu, 4 Jun 2020 13:09:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728337AbgFDNJJ (ORCPT ); Thu, 4 Jun 2020 09:09:09 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:42722 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726003AbgFDNJH (ORCPT ); Thu, 4 Jun 2020 09:09:07 -0400 Received: by mail-io1-f69.google.com with SMTP id v16so3564750ios.9 for ; Thu, 04 Jun 2020 06:09:07 -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=u+o2RcyaHSofblAhvnfVshy/ql7Met8tthhkmRydCTY=; b=rK+KaOYvwV5puhXTVam8FUnSLMk0YaQa9/7RqhHLpA6vVJ0/iO5Q6valRQXE5E2vR0 j3rL+FZ7pZ0bRtJOQj3MZBbeO+pYuqy7Py9V8+43cn7J5DWB4gmcAhe2h20EpE5zr7QR FBVb+vdktCwuoxs/5b4soqDvQj0NDbD4d0tlsLZpXUOdDuVtEV0JiKFf7ZoijU8WdtEU 5uu5Jf3SWqNYTmI6Lm+BpAYywYZsIaoyTFz8COP+ekl8oDxbj+0Iq0ZzoyhBAsH1rVD5 B7ML84np32dO805S2EAGjD8qYiniHjPNwbIcDgnKDOstAe/tJrki47nYAURyaJ7wO8dD uXqw== X-Gm-Message-State: AOAM530piz0sor/t+7NQRDhwGO+VrDEI4DHFhBaQYgFEGIX2Vgy138S/ cskxfCKMBPrQP40eASBW50mZCRIfimjMDn+oeXGveD+kCbaB X-Google-Smtp-Source: ABdhPJzv0fpa1LEbfmP9G7nInep6IYlF2rdPEZ+bA0p++ozOTMgXiZEO3IRN+O2prm6dT0jXr2eer3ZzH36mkQc4A3bweWh9DzjZ MIME-Version: 1.0 X-Received: by 2002:a92:9acc:: with SMTP id c73mr3904247ill.74.1591276146848; Thu, 04 Jun 2020 06:09:06 -0700 (PDT) Date: Thu, 04 Jun 2020 06:09:06 -0700 In-Reply-To: <000000000000c8a76e05a73e3be3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000078fab705a741d901@google.com> Subject: Re: WARNING in kvm_inject_emulated_page_fault From: syzbot To: bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, junaids@google.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org 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 bug to: commit ee1fa209f5e5ca5c1e76c7aa1c2aab292f371f4a Author: Junaid Shahid Date: Fri Mar 20 21:28:03 2020 +0000 KVM: x86: Sync SPTEs when injecting page/EPT fault into L1 bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=138f49de100000 start commit: cb8e59cc Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=104f49de100000 console output: https://syzkaller.appspot.com/x/log.txt?x=178f49de100000 kernel config: https://syzkaller.appspot.com/x/.config?x=a16ddbc78955e3a9 dashboard link: https://syzkaller.appspot.com/bug?extid=2a7156e11dc199bdbd8a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=134ca2de100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=178272f2100000 Reported-by: syzbot+2a7156e11dc199bdbd8a@syzkaller.appspotmail.com Fixes: ee1fa209f5e5 ("KVM: x86: Sync SPTEs when injecting page/EPT fault into L1") For information about bisection process see: https://goo.gl/tpsmEJ#bisection