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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 073CEC433FE for ; Tue, 7 Dec 2021 19:19:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240922AbhLGTWq (ORCPT ); Tue, 7 Dec 2021 14:22:46 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:56976 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231804AbhLGTWp (ORCPT ); Tue, 7 Dec 2021 14:22:45 -0500 Received: by mail-io1-f71.google.com with SMTP id r199-20020a6b2bd0000000b005e234972ddfso86107ior.23 for ; Tue, 07 Dec 2021 11:19:14 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=qwIHKUpEZfXAJ98aaHZ0G3Cq+vGsYXU3+sGI9JUl8Qs=; b=uyPbXlHw0+h+Vuj2RxtKGMjyFTEP3a2MozGYHLM/hGuF7l2lMc3tWRXG8IEHYkRf/P 7Ta+d3d1muTKOe/CSyY3kOolqS01rcusM1Vv3zRC2wAdX87Db0LBzgfkXLVyhjZNlzxo s9NpxvdeL1EAYazW0uebFiO4bHa3bX4cdTtdP59IxmBMgLPVtctXxD3bZKT/1BvijsyJ qn3SZML8VPiepO5rWhseZE1y9U7gWEws6F3+ptT7v3mvYT54ZGM5SOt94A8Fq2KeaOIT oqy1jAgcaX2obPF10phFSJFeK6u6FEgLmfcKnsHmj5dfXXJHhsA4qhh5ml4CL1OhItce C0Sw== X-Gm-Message-State: AOAM531davpmi0qu0FciBzEDNzaFRSveD6ViLZAg9Z8s/7ewj5TZiwl+ NrrZISM28jzQ06ok9NBSVWps/W/TcqnTbzBzvgjnyb+QPms+ X-Google-Smtp-Source: ABdhPJzsAxGhr40s7GLGaVzV5ZP3zz35qdTxoDeDNmyRGE97aOMtDpkw4j5HGfgIf0P+VpdejmMSHCjtkDqG0IeNhi/TooDucIxx MIME-Version: 1.0 X-Received: by 2002:a05:6602:8da:: with SMTP id h26mr1442606ioz.76.1638904754048; Tue, 07 Dec 2021 11:19:14 -0800 (PST) Date: Tue, 07 Dec 2021 11:19:14 -0800 In-Reply-To: <00000000000051f90e05d2664f1d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000af941b05d2933f28@google.com> Subject: Re: [syzbot] WARNING in nested_vmx_vmexit From: syzbot To: bp@alien8.de, dave.hansen@linux.intel.com, fgheet255t@gmail.com, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, mlevitsk@redhat.com, pbonzini@redhat.com, seanjc@google.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit c8607e4a086fae05efe5bffb47c5199c65e7216e Author: Maxim Levitsky Date: Mon Sep 13 14:09:53 2021 +0000 KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10f21e3ab00000 start commit: f80ef9e49fdf Merge tag 'docs-5.16-3' of git://git.lwn.net/.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=12f21e3ab00000 console output: https://syzkaller.appspot.com/x/log.txt?x=14f21e3ab00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d5e878e3399b6cc dashboard link: https://syzkaller.appspot.com/bug?extid=f1d2136db9c80d4733e8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1603533ab00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=175b5f3db00000 Reported-by: syzbot+f1d2136db9c80d4733e8@syzkaller.appspotmail.com Fixes: c8607e4a086f ("KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry") For information about bisection process see: https://goo.gl/tpsmEJ#bisection