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 X-Spam-Level: X-Spam-Status: No, score=-11.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F3BAC48BC2 for ; Thu, 24 Jun 2021 02:29:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 831BF613B4 for ; Thu, 24 Jun 2021 02:29:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229800AbhFXCbc (ORCPT ); Wed, 23 Jun 2021 22:31:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:59964 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229758AbhFXCbc (ORCPT ); Wed, 23 Jun 2021 22:31:32 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id AB35F613B0; Thu, 24 Jun 2021 02:29:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624501754; bh=qfes4XlTr7wZHA/gX1R4vn3ErhXUgft2vuwloOuqJH8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=FAMh4+QoAuFF1jJ9kHmTbp9/ydQxbb3M5ZXBFYFE5KwhbO8otL4kipxuWZCx5CvXV 1g/6NvgDwplHRZuGBhTtc6SHDQxjSpk6y95eGTetqRfIvyp32Kx5Ya5T5ay344bzEE D9sGb1HKg9xTiP3RmSnd4WkjUR/SLietI7dEfA5kf+f011nRkGNq5yCRB1cyr9AQmK 00KuXivitCPNOy5tY6Da+rcrfkF2EBc9mOkR5HmtnRsp9bCtE9HojGQ9c48JJ6RFVv /P/luhRi5YV574NjTxA3YTl7IYODn5ZeuXzd5tx51WGfWxH6C91MYON63V/vMoiXJ+ /lOBphk8eqyUg== Date: Wed, 23 Jun 2021 19:29:11 -0700 From: Nathan Chancellor To: Marcin Wojtas Cc: Stephen Rothwell , David Miller , Networking , Linux Kernel Mailing List , Linux Next Mailing List Subject: Re: linux-next: build failure after merge of the net-next tree Message-ID: References: <20210624082911.5d013e8c@canb.auug.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Thu, Jun 24, 2021 at 12:46:48AM +0200, Marcin Wojtas wrote: > Hi Stephen, > > czw., 24 cze 2021 o 00:29 Stephen Rothwell napisał(a): > > > > Hi all, > > > > Today's linux-next build (x86_64 modules_install) failed like this: > > > > depmod: ../tools/depmod.c:1792: depmod_report_cycles_from_root: Assertion `is < stack_size' failed. > > > > Caused by commit > > > > 62a6ef6a996f ("net: mdiobus: Introduce fwnode_mdbiobus_register()") > > > > (I bisected to there and tested the commit before.) > > > > The actual build is an x86_64 allmodconfig, followed by a > > modules_install. This happens in my cross build environment as well as > > a native build. > > > > $ gcc --version > > gcc (Debian 10.2.1-6) 10.2.1 20210110 > > $ ld --version > > GNU ld (GNU Binutils for Debian) 2.35.2 > > $ /sbin/depmod --version > > kmod version 28 > > -ZSTD +XZ -ZLIB +LIBCRYPTO -EXPERIMENTAL > > > > I have no idea why that commit should caused this failure. > > Thank you for letting us know. Not sure if related, but I just found > out that this code won't compile for the !CONFIG_FWNODE_MDIO. Below > one-liner fixes it: > > --- a/include/linux/fwnode_mdio.h > +++ b/include/linux/fwnode_mdio.h > @@ -40,7 +40,7 @@ static inline int fwnode_mdiobus_register(struct mii_bus *bus, > * This way, we don't have to keep compat bits around in drivers. > */ > > - return mdiobus_register(mdio); > + return mdiobus_register(bus); > } > #endif > > I'm curious if this is the case. Tomorrow I'll resubmit with above, so > I'd appreciate recheck. I wonder if this message that I see with Arch Linux's config is related and maybe explains the issue a little bit more: $ curl -LSso .config https://raw.githubusercontent.com/archlinux/svntogit-packages/packages/linux/trunk/config # do not require pahole $ scripts/config -d DEBUG_INFO_BTF $ make -skj"$(nproc)" INSTALL_MOD_PATH=rootfs olddefconfig all modules_install ... depmod: ERROR: Cycle detected: acpi_mdio -> fwnode_mdio -> acpi_mdio depmod: ERROR: Found 2 modules in dependency cycles! ... Reverting all the patches in that series fixes the issue for me. Cheers, Nathan