From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C5933382E8 for ; Sat, 28 Feb 2026 10:38:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.152 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772275083; cv=none; b=kOekcfHeehm7tjV19TUHJAkYTLAChAYycOyXo1zNAhhCkLdpLiLh6OHKqef2nmDooyu5ZES2sN7RoQjJAV6PnTVXWcXIKHBvFvcR000AGK7Sv71fBV8fhtI2lIo6DNu4kJkwnP4IsueXtLAVyRep2mEwy5sFu+pdPjGtLRAtmv4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772275083; c=relaxed/simple; bh=/0MPf200MdT6aUs5qDYi12TSRXtEc/xRTFlXonZ/1HA=; h=Subject:To:Cc:References:From:Message-ID:Date:MIME-Version: In-Reply-To:Content-Type; b=CZ+vLoYCBCMrsh/F3htFCZpDvQsl1AUMkmLCdmIUbypxW3FfO5vxpnZa1YIPioyUwj3pGRUCWlgLNKtj81/UayThCl5xQhKVS54y2Zt0t0IORj7SY398g2vr+cD7D9olVw1L+wPWQngv/0xN5eEmESjQKY9yJ9v4BAwtM6GKlb8= ARC-Authentication-Results:i=1; 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s=mail20150812; t=1772275071; 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:autocrypt:autocrypt; bh=ADPZdLTrF/uf/xq9G8N2idASJ/e3mIgSiH0xm5u9HGs=; b=R4SqyUKVyBcJsWbiXgWWaMUmsWsIyGRmah3bjgK4XtITTJhuvbgIsch/AsjRCbThrwGf0K wu7VesRRGQ3NOgP3FEaSR37zt3ebm3i6gtwZM+xRxD47sP3qcV4/EzBRPzyKMWnjdeCSAZ yBa9ZSsft0fT7T4VWIIjZuiwOwSd1525kgxLjhUWlrNR4YmmVDgkFffe6rCFyajMUEurrJ r3hYc/xYHSoyG+bB/YUr18BxqrBYQ4cReSIVKvFV8Bfv8NINWQgjzWm4Q6A8qGcp8H96pP 7eeSqZNL4HDtsczR/qf5z7iv359UjVXAIIvI4X+6grI6iqlu1bc4d2x5Kaq0xg== Subject: Re: 6.18.14: VirtualBox modules don't build anymore; bisected To: Nathan Chancellor , Greg KH Cc: "stable@vger.kernel.org" , jpoimboe@kernel.org References: <62d12399-76e5-3d40-126a-7490b4795b17@mailbox.org> <2026022741-mahogany-coveted-acfa@gregkh> <2026022738-tricky-popper-c70e@gregkh> <20260228054850.GA2321895@ax162> From: Rainer Fiebig Autocrypt: addr=jrf@mailbox.org; 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charset=utf-8 Content-Transfer-Encoding: 7bit X-MBO-RS-META: iupushna1d1conuwiphgbbgczdxeceaz X-MBO-RS-ID: 6b4978eb23f17827826 Am 28.02.26 um 06:48 schrieb Nathan Chancellor: > On Fri, Feb 27, 2026 at 08:29:05PM -0500, Greg KH wrote: >> On Sat, Feb 28, 2026 at 12:30:29AM +0100, Rainer Fiebig wrote: >>> Am 27.02.26 um 21:12 schrieb Greg KH: >>>> On Fri, Feb 27, 2026 at 04:33:34PM +0100, Rainer Fiebig wrote: >>>>> In case this hasn't been reported already: with 6.18.14 the >>>>> VirtualBox-7.1.16 modules won't build during the boot process, as they >>>>> usually do. Bisecting between 6.18.13/14 led to this: >>>>> >>>>> f056c340b73962ebaffe93997b582bdf16dc6270 is the first bad commit >>>>> commit f056c340b73962ebaffe93997b582bdf16dc6270 (HEAD) >>>>> Author: Josh Poimboeuf >>>>> Date: Tue Feb 10 13:45:22 2026 -0800 >>>>> >>>>> kbuild: Add objtool to top-level clean target >>>>> >>>>> [ Upstream commit 68b4fe32d73789dea23e356f468de67c8367ef8f ] >>>>> >>>>> Objtool is an integral part of the build, make sure it gets cleaned >>>>> by "make clean" and "make mrproper". >>>>> [...] >>>>> >>>>> >>>>> The script I use for building my kernels includes "make mrproper" before >>>>> compiling and "make clean" after the kernel and modules have been >>>>> installed. >>>>> >>>>> Perhaps it would be more appropriate to report this to the >>>>> VirtualBox-devs but I won't do that because the registration procedure >>>>> asks for too many private data. >>>> >>>> We obviously can not do anything about external modules, so if you rely >>>> on these, you are going to have to work with them on this, sorry. >>> >>> Alright, tough luck. But that a patch-release of an LTS-kernel breaks >>> VirtualBox is really a first - at least as far as I can remember. >> >> Then they have gotten really lucky :) > > I think this is firmly a Kbuild bug, as we broke the contract of > 'make clean' leaving around enough to build external modules: > > https://lore.kernel.org/20260227-avoid-objtool-binary-removal-clean-v1-1-122f3e55eae9@kernel.org/ > > Kbuild is what runs objtool, not the external module itself. I don't > care much for external modules but this does not appear to be something > they have done or relied on. Thanks for the info! I have the "make clean" step in my script because the repo gets backed up but I don't want the remnants of an old kernel-build in it then. Good to know that a fix is under way. Rainer