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 3F9FFC433EF for ; Tue, 25 Jan 2022 20:22:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231776AbiAYUWa (ORCPT ); Tue, 25 Jan 2022 15:22:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34632 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231818AbiAYUWB (ORCPT ); Tue, 25 Jan 2022 15:22:01 -0500 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0056C061755 for ; Tue, 25 Jan 2022 12:22:01 -0800 (PST) Received: by mail-pj1-x102f.google.com with SMTP id w12-20020a17090a528c00b001b276aa3aabso2869277pjh.0 for ; Tue, 25 Jan 2022 12:22:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=hJKy47pW1oc6236j8uB1UVM4hTAQSU9C3F7elRFpa64=; b=PWLgsA2bRjPnVKyKi1lIhnVfI+e7VBGCcM0myxXMQiqFJ/wWeP4kGdkLICCbHSOV8H zPCRWNuI7KzsZqNMMHj+cELEl8mjkbMg83e/mDO68SeIac0FezFVgBDeJmoLmZ8cYfWf P8GESwgi7kEyExnvWmUUJ0Mf0JEMDkhBIUF2A3x2q3QVy0sUaWpPNPnqkzHcHNF69UEi WcDFVXmn5VyyVnMTEptdJDMMV5dgra59/nlg9WsvWwrjy5GFSpkjN1+jjXWmiZy3QIJf vmmcW6vb18J0u2+RLbi8O7Fu+qaJWiEzBMC8yofxBGvoLqjtsSeRqkUhkw/mUvhebl0r 9MDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=hJKy47pW1oc6236j8uB1UVM4hTAQSU9C3F7elRFpa64=; b=XvkUppc3JAd6dzkTdVS+QaQbueO6/gERFodhUq9aJBtT/HDeMCjtFEEIDSj+AGAEvS 7ZDCszm6g0EzJOG2rKRPXNofn1pyA+MTzlVJ9/KTHTEj29ufJuu7WEoqtsYnm0zkw6ah eGfYDsFKJmCU4SK5wZsEweaNUwL8mJX1xsX3ODjDxsAoPSPGG/pUKLWJNWw/vvD/T/Ct L5EGxkdaUxwuDPw8cWBBqIcRJZIDjR7K+Lq7HJH059FJiBEliUV1XTiTUwL0Muj1+sU0 qHK3RimrlTHr4qGE5mV0nkryM5uVzecPAVfd7mndwqErA0lXvDibz0sXxP1Ok+cx+od0 +icg== X-Gm-Message-State: AOAM532Tmh7HWmTah/FrI/GDDsXMBDGkf9cDMMDEYm84v1LNDNOZDS2r v9usnhO/sS7v4qsO4efvwu6wVg== X-Google-Smtp-Source: ABdhPJwpKnxJBMOgi9KonCtY2cy/DGgGQrJnO0rKNuQA9tDen8Sx8jWzGGvymoZTzExcVOWAbaASNg== X-Received: by 2002:a17:90a:6f05:: with SMTP id d5mr3279064pjk.59.1643142121060; Tue, 25 Jan 2022 12:22:01 -0800 (PST) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id z13sm6996496pfj.23.2022.01.25.12.22.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Jan 2022 12:22:00 -0800 (PST) Date: Tue, 25 Jan 2022 20:21:57 +0000 From: Sean Christopherson To: syzbot Cc: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org Subject: Re: [syzbot] WARNING in free_loaded_vmcs (3) Message-ID: References: <0000000000002c4f0905d655b052@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000002c4f0905d655b052@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 24, 2022, syzbot wrote: > WARNING: CPU: 0 PID: 3606 at arch/x86/kvm/vmx/vmx.c:2665 free_loaded_vmcs arch/x86/kvm/vmx/vmx.c:2665 [inline] > WARNING: CPU: 0 PID: 3606 at arch/x86/kvm/vmx/vmx.c:2665 free_loaded_vmcs+0x158/0x1a0 arch/x86/kvm/vmx/vmx.c:2656 KVM gets confused if userspace abuses KVM_SET_VCPU_EVENTS to toggle SMM on/off while the vCPU is post-VMXON, I'll send a patch.