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 DCF98C433F5 for ; Thu, 28 Apr 2022 17:22:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346684AbiD1R0L (ORCPT ); Thu, 28 Apr 2022 13:26:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52540 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346038AbiD1R0I (ORCPT ); Thu, 28 Apr 2022 13:26:08 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C76B285966 for ; Thu, 28 Apr 2022 10:22:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1651166572; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CYHJD6E6HfiYbx2PKHbXV03lbbkE9/yKMQwwlCTMLzs=; b=ZL9rH+FlngAbtdGZNM8RgmudfavTWy9Xiac8VKcLs2Ay684GldDcuJ9zX22pPyn5R2WHCz tUxmQvSO66dZm1LklYblCpEHHxIlIWaTTYjoqYCXGOEh1ChYBHF440mUWshvJeJXbgbEUA 8bi+trlKlD3wZD4qD+oxo4qi93keFvg= Received: from mail-ed1-f69.google.com (mail-ed1-f69.google.com [209.85.208.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-373-U4og35J8PbSCUFI8D1VXJA-1; Thu, 28 Apr 2022 13:22:49 -0400 X-MC-Unique: U4og35J8PbSCUFI8D1VXJA-1 Received: by mail-ed1-f69.google.com with SMTP id k13-20020a50ce4d000000b00425e4447e64so3102151edj.22 for ; Thu, 28 Apr 2022 10:22:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=CYHJD6E6HfiYbx2PKHbXV03lbbkE9/yKMQwwlCTMLzs=; b=1SAy3tOEo9P+BD4j6kiADB0yhrubVy6tDvcHWw6dYkPqGJmydaH0LICnDcNaWZVyIh ZFmOuyacwardjNvlz68+rL6jnBIBN3DIMDyH+6YMFLUPU+wPgcCR1weZKRRWF2ZE9MB/ Hn0wXMyuVCzAEqoj+uQxysMRIhRVCSNBzl3JIKSMs6p15dbC+xnhcknMtQbXbBQkoXoi 0pHyZpbeEzDP4XtJiecWjsGUHPPRaaSwjGgNl1tbUmjuSfe6OmL5hDvcfnIkq3WR9p2k gJsJHEOXbVOftJK91E+MhT9RHn4L4+VuIXqt+qlGwz/BU66z/EuVshhoEYnrvPpUcf4z 77Vw== X-Gm-Message-State: AOAM532gU2rKKoG2YTGTQe8jKZtgr3QbuQETxwcZmzdmwHuxPEtvnrzK phMBDYenAUPKLtYUvGtQ04ynYp92NNYFUDIfk2CHH9N/DnXcSpOfe1ahZhWAEBY5TdLHAcrwUBB mcBKR0TSZ8/hi X-Received: by 2002:a05:6402:84a:b0:426:262d:967e with SMTP id b10-20020a056402084a00b00426262d967emr5335102edz.286.1651166568313; Thu, 28 Apr 2022 10:22:48 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwBq/kWkr4CtJmNaMdPgNDfkiNjwLZz6U/M46LKSjVacOdKNe9Z0Ou/LgFutM5fhzK8BIB98w== X-Received: by 2002:a05:6402:84a:b0:426:262d:967e with SMTP id b10-20020a056402084a00b00426262d967emr5335079edz.286.1651166568059; Thu, 28 Apr 2022 10:22:48 -0700 (PDT) Received: from ?IPV6:2001:b07:6468:f312:1c09:f536:3de6:228c? ([2001:b07:6468:f312:1c09:f536:3de6:228c]) by smtp.googlemail.com with ESMTPSA id q8-20020aa7cc08000000b0042617ba637esm1880806edt.8.2022.04.28.10.22.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Apr 2022 10:22:47 -0700 (PDT) Message-ID: Date: Thu, 28 Apr 2022 19:22:43 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [syzbot] WARNING in kvm_mmu_uninit_tdp_mmu (2) Content-Language: en-US To: Sean Christopherson , Maxim Levitsky Cc: syzbot , 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, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org References: <00000000000082452505dd503126@google.com> <13b3235ef66f22475fd4059df95ad0144548ccd1.camel@redhat.com> From: Paolo Bonzini In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 4/28/22 17:32, Sean Christopherson wrote: > On Tue, Apr 26, 2022, Maxim Levitsky wrote: >> I can reproduce this in a VM, by running and CTRL+C'in my ipi_stress test, > > Can you post your ipi_stress test? I'm curious to see if I can repro, and also > very curious as to what might be unique about your test. I haven't been able to > repro the syzbot test, nor have I been able to repro by killing VMs/tests. Did you test with CONFIG_PREEMPT=y? (BTW, the fact that it reproduces under 5.17 is a mixed blessing, because it means that we can analyze/stare at a simpler codebase). Paolo