From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-6.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by gnuweeb.org (Postfix) with ESMTPS id 2E2507E381 for ; Wed, 6 Apr 2022 14:44:23 +0000 (UTC) Authentication-Results: gnuweeb.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=CLRV4E4p; dkim-atps=neutral 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 88E06B8241B; Wed, 6 Apr 2022 14:44:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EC7DC385AB; Wed, 6 Apr 2022 14:44:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649256260; bh=c22Qvz6Lg5G43oW+8cWIOzhioVkfZNZFgOgWMjC1cro=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=CLRV4E4pRuSe3tC4hwf822B+SpgsWRuhhbgwHaavuw0HmmKVK6lFc+4SVVBL/hpPz n4UOPssFq9STYK0QlhvBAEAmUSXhCYnB4aQzBco6tRz1o6yps74+ogwjeNdd0umkfE X5UW0pPNxXwBWWfTPCvx7kTznQcB/aBg7HNY2PRuAHa22f0grJb4IUfL0DA2qoIozL bHuephcTTELTvU19n34Iv4b1GBAppB/feFOFHGX6LRxcL16dkrcXdbZqmcLeBvZPz3 XrczjvNRjAz2c/IVdIGgTVU8sIEvq8rdn8qkL8gxjN4kJ+EPipvOwowcDLKJNnFyw/ grUAtxctlg1/w== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id D67735C03F4; Wed, 6 Apr 2022 07:44:19 -0700 (PDT) Date: Wed, 6 Apr 2022 07:44:19 -0700 From: "Paul E. McKenney" To: "Chen, Rong A" Cc: kernel test robot , kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org Subject: Re: [kbuild-all] Re: [ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 109/158] WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0 Message-ID: <20220406144419.GL4285@paulmck-ThinkPad-P17-Gen-1> Reply-To: paulmck@kernel.org References: <202204040012.4Fu9uBps-lkp@intel.com> <20220403183040.GP4285@paulmck-ThinkPad-P17-Gen-1> <53cf3eac-37d5-17d6-3805-416a71256e98@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53cf3eac-37d5-17d6-3805-416a71256e98@intel.com> List-Id: On Wed, Apr 06, 2022 at 07:11:27PM +0800, Chen, Rong A wrote: > > > On 4/4/2022 2:30 AM, Paul E. McKenney wrote: > > On Mon, Apr 04, 2022 at 12:20:22AM +0800, kernel test robot wrote: > > > tree: https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/fastexp.2022.04.01a > > > head: d9f3e7d671416fdf5b61f094765754269b652db0 > > > commit: c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba [109/158] rcu: Add polled expedited grace-period primitives > > > config: (https://download.01.org/0day-ci/archive/20220404/202204040012.4Fu9uBps-lkp@intel.com/config) > > > compiler: riscv32-linux-gcc (GCC) 11.2.0 > > > reproduce (this is a W=1 build): > > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > > > chmod +x ~/bin/make.cross > > > # https://github.com/ammarfaizi2/linux-block/commit/c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba > > > git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block > > > git fetch --no-tags ammarfaizi2-block paulmck/linux-rcu/fastexp.2022.04.01a > > > git checkout c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba > > > # save the config file to linux build tree > > > mkdir build_dir > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash > > > > > > If you fix the issue, kindly add following tag as appropriate > > > Reported-by: kernel test robot > > > > > > All warnings (new ones prefixed by >>, old ones prefixed by <<): > > > > > > > > WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0 > > > The function ieee802154_iface_init() references > > > the variable __init .L0 . > > > This is often because ieee802154_iface_init lacks a __init > > > annotation or the annotation of .L0 is wrong. > > > > > > Note: the below error/warnings can be found in parent commit: > > > << WARNING: modpost: vmlinux.o(.text+0x432e6): Section mismatch in reference from the function dma_get_required_mask() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0xe35ca): Section mismatch in reference from the function mlock_page_drain() to the variable .init.text:.LVL125 > > > << WARNING: modpost: vmlinux.o(.text+0x96a46e): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0x96a5b4): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0x96a5c0): Section mismatch in reference from the function rpmsg_send() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0x96a5d4): Section mismatch in reference from the function rpmsg_sendto() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0x96a5e8): Section mismatch in reference from the function rpmsg_send_offchannel() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0x96a5fc): Section mismatch in reference from the function rpmsg_trysend() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0x96a610): Section mismatch in reference from the function rpmsg_trysendto() to the variable .init.text:.L0 > > > << WARNING: modpost: vmlinux.o(.text+0x96a624): Section mismatch in reference from the function rpmsg_poll() to the variable .init.text:.L0 > > > > I freely confess that I have no idea what any of these error messages > > are trying to tell me. What is ".init.txt.L0"? How did my patch affect > > ieee802154_iface_init() or the register_netdevice_notifier() function > > that it invokes? For that matter, how did my patch cause an access to > > be made to __init data from a non-__init function? > > > > Thanx, Paul > > Hi Paul, > > Sorry for the inconvenience, only below warning was triggered by the commit: > > >> All warnings (new ones prefixed by >>, old ones prefixed by <<): > >> > >>>> WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in > reference from the function ieee802154_iface_init() to the variable > .init.text:.L0 > > the others are for reference only: > >> Note: the below error/warnings can be found in parent commit > > The problem has existed for some time before your patch, we'll add it to > ignore list to avoid noise. Thank you for getting back to me. Very well, I will ignore subsequent errors that look like this. ;-) Thanx, Paul