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 8C6B3C433EF for ; Mon, 2 May 2022 01:05:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356330AbiEBBIl (ORCPT ); Sun, 1 May 2022 21:08:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231254AbiEBBIh (ORCPT ); Sun, 1 May 2022 21:08:37 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 26F643AA47 for ; Sun, 1 May 2022 18:05:08 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B0B71B80EAB for ; Mon, 2 May 2022 01:05:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0021DC385A9; Mon, 2 May 2022 01:05:04 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="RuBV6/El" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1651453503; 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: in-reply-to:in-reply-to:references:references; bh=jzyK9MyT8mC9OCGXyGNgpyYRzPGiZMOnxTghjkCxxdQ=; b=RuBV6/ElADelu236LLJpnixADUBmGhgpH9boUwmTsIKn/Iwr+GeczNq/UjJM7cmjrWUMNm Gb7eCllj/tD6S8QVkizTEc2cOdcpHMLASs6+ud78QdJ6kell+tbQn+PyMseBCWCylZEurl KNTbFEt4y0iHkmniFE3cUBMvi3re8TI= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id cba3d5bf (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO); Mon, 2 May 2022 01:05:02 +0000 (UTC) Date: Mon, 2 May 2022 03:05:01 +0200 From: "Jason A. Donenfeld" To: Larry Finger Cc: LKML Subject: Re: Changes in kernel 5.18-rc1 leads to crashes in VirtualBox Virtual Machines Message-ID: References: <7f01221d-f693-adf8-f5a5-d71944b44162@lwfinger.net> <6bd35831-2d7a-77ee-55e9-755ca752b0c8@lwfinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Larry, On Mon, May 02, 2022 at 02:11:13AM +0200, Jason A. Donenfeld wrote: > Hey again, > > I just installed VirtualBox ontop of 5.18-rc4, and then I made a new VM > with a fresh install of OpenSUSE, and everything is fine. No issues at > all. > > So you're going to have to provide more information. > > Jason With still no more information provided from you, I've gone scouring and found your much more informative bug report here: https://www.virtualbox.org/ticket/20914 along with a larger log here https://www.virtualbox.org/attachment/ticket/20914/Windows%2010%20Clone-2022-04-24-20-55-56.log Why would you not have sent me all this information right away? Surely you know how to report bugs. If you're going to concern me with the possibility that I've broken something, at least give me enough detail to be able to do something. Otherwise it's pure frustration. Anyway, it's still too little information, but I could extract the Windows build from that log file, pull down ntoskrnl.exe and hope it roughly matches, and then go to work in IDA Pro trying to figure out what's going on at ntoskrnl.exe+3f7d50, and if I managed to grab the right build -- which I more than likely did not -- then that's a `mov byte ptr gs:853h, 0` in KiInterruptDispatch, which seems entirely unrelated to the change you mentioned. So I think it'd be a good moment for you to show your bisect logs so we can be certain we're after the right thing. Jason