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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1A63DC43458 for ; Fri, 10 Jul 2026 09:44:56 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4gxRkt39Gbz2yS4; Fri, 10 Jul 2026 19:44:54 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=115.124.30.100 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783676694; cv=none; b=FDP3t6C0tQIjiwDsoVWwlxCSAHsGFMj7ibK0dGBhmFduwgVGvJG06eOyBV1g8VVwbpji/wjL/NujgmB5TxknwjG1UURcYDAT+16loTf12ZgKd68NDQa8IQuV1EAG87tPFqnJ/EDBA7BFzQEQrwlOJW39jOyEx08Sh1056EbJFC3SpL1c4wRn3EVGAzni6j4SqYmmZhPI1rnf/zK7+QsL1XQwqjzPuNkkLKjMeJ9TfDJ0GsVTqXLoC9YDIm8x87/vAydhXPx0T53EQRVt5oSi1mxMvt66TQWH86lgGiDbmFTh2QQNV3RxxkABcABifGadyVDTBNkg4eiK4gRo7mY8Xg== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783676694; c=relaxed/relaxed; bh=0SCLf4a0Hf1R30pugtjRiY04P2OQ/nfMJ2OjDravk6A=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=g8bCT6XuOfXukumO5TTQm/QmliLgGWM37ET0R1wkEBUOaN0nizIPRaicXcIg75HJ/JjTnptf8+zv/cu9MoPQa9NoexzWU6csLaNnnUEex5ORiq9X6BRKTfawFnqNnJ6hrPWTb6wLygOAFzyVMQxsQ9XEB9FBRAW5qzgJZCgBGUHjoJrr4STSMsjngb88FLnSaKjne7kCWxsC5tV7CXgpYDOh2nBmsGSh35ukRBDZIqDcW5IOY3FnC0mH+Q8VAI39nzXMBGJQ38EGMiLiT1qxRoS5VGTRvQbVOM3zj6P749y9MSxNHF3iOL7VwDGi/1fdorsxKRpkpL+AMLcbNJuk7A== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; dkim=pass (1024-bit key; unprotected) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.a=rsa-sha256 header.s=default header.b=L2uv/3Af; dkim-atps=neutral; spf=pass (client-ip=115.124.30.100; helo=out30-100.freemail.mail.aliyun.com; envelope-from=feng.tang@linux.alibaba.com; receiver=lists.ozlabs.org) smtp.mailfrom=linux.alibaba.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.a=rsa-sha256 header.s=default header.b=L2uv/3Af; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=115.124.30.100; helo=out30-100.freemail.mail.aliyun.com; envelope-from=feng.tang@linux.alibaba.com; receiver=lists.ozlabs.org) Received: from out30-100.freemail.mail.aliyun.com (out30-100.freemail.mail.aliyun.com [115.124.30.100]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4gxRkq5nkzz2xlt for ; Fri, 10 Jul 2026 19:44:50 +1000 (AEST) DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1783676686; h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type; bh=0SCLf4a0Hf1R30pugtjRiY04P2OQ/nfMJ2OjDravk6A=; b=L2uv/3Afx2x/yCmBGs4TES/k/X6KJ+SichbcLZKjR0qXozvb3j0Lw2dlCSVgR0cgRFidWiDsMKr4FCHUlrmd2Su+DwqiTEOOMHUo/GZnzwjNuyo7eiy9EV/Ch7acAVI4KyryO+e+bWuxiPZrxqMS4es70Dr5eujTirSbp2afrtI= X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R211e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033032089153;MF=feng.tang@linux.alibaba.com;NM=1;PH=DS;RN=10;SR=0;TI=SMTPD_---0X6nI9ux_1783676684; Received: from localhost(mailfrom:feng.tang@linux.alibaba.com fp:SMTPD_---0X6nI9ux_1783676684 cluster:ay36) by smtp.aliyun-inc.com; Fri, 10 Jul 2026 17:44:44 +0800 Date: Fri, 10 Jul 2026 17:44:43 +0800 From: Feng Tang To: "Christophe Leroy (CS GROUP)" , lkp@intel.com Cc: kernel test robot , linuxppc-dev@lists.ozlabs.org, Nathan Chancellor , Nick Desaulniers , clang-built-linux@googlegroups.com, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Marek Szyprowski Subject: Re: ld.lld: error: relocation R_PPC_ADDR16_LO cannot be used against symbol 'init_task'; recompile with -fPIC Message-ID: References: <202607100652.WPUlEAfx-lkp@intel.com> <37fe4a15-e51b-411e-9667-a1c670f413e1@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <37fe4a15-e51b-411e-9667-a1c670f413e1@kernel.org> On Fri, Jul 10, 2026 at 06:33:49AM +0200, Christophe Leroy (CS GROUP) wrote: > + Clang > > Le 10/07/2026 à 04:51, Feng Tang a écrit : > > Thanks for the report! > > > > Add Powerpc list. > > This is a Clang build with Clang linker, did you reproduce the problem with > a normal GCC build ? I tried the 'reproduce' provided by 0day bot, but it failed early: /workspace/feng/ws2/projects/linux-2.6/Makefile:1244: C=1 specified, but sparse is not available or not up to date Documentation/.renames.txt: warning: ignored by one of the .gitignore files ../arch/powerpc/lib/sstep.c:1346:31: error: variable 'rc' set but not used [-Werror,-Wunused-but-set-variable] 1346 | unsigned int opcode, ra, rb, rc, rd, spr, u; | ^ ../arch/powerpc/lib/sstep.c:1350:21: error: variable 'suffix' set but not used [-Werror,-Wunused-but-set-variable] 1350 | unsigned int word, suffix; | ^ 2 errors generated. 0day folks, could you help to check? thanks > Thanks > Christophe > > > > > On Fri, Jul 10, 2026 at 06:18:50AM +0800, kernel test robot wrote: > > > tree: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux.git&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7C016c05b801ba48f2593f08dede2e29c2%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639192487094863506%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=fQm6QfsJ2ggaKoRJWCz4dsaquz7Wo3uhRnOexVUrTnQ%3D&reserved=0 master > > > head: 0e35b9b6ec0ffcc5e23cbdec09f5c622ad532b53 > > > commit: d5cae2261b86913e602452ce4a07e6aefc0f603b dma-contiguous: simplify numa cma area handling > > > date: 6 weeks ago > > > config: powerpc-randconfig-r133-20260709 (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260710%2F202607100652.WPUlEAfx-lkp%40intel.com%2Fconfig&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7C016c05b801ba48f2593f08dede2e29c2%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639192487094899182%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=BkT0BYyJtniz6YPzGpYbO0jn2T7vBDBLaK2Tsh1LcnE%3D&reserved=0) > > > compiler: clang version 21.1.8 (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fllvm%2Fllvm-project&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7C016c05b801ba48f2593f08dede2e29c2%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639192487094917538%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=5%2BLVtRoojuNbhEMr3BhM2xF50PV%2FIYh%2FWw3ipDIWG%2FY%3D&reserved=0 2078da43e25a4623cab2d0d60decddf709aaea28) > > > sparse: v0.6.5-rc1 > > > reproduce (this is a W=1 build): (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260710%2F202607100652.WPUlEAfx-lkp%40intel.com%2Freproduce&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7C016c05b801ba48f2593f08dede2e29c2%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639192487094935016%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=%2BrpcCLuNecZIfyF6N5X%2FFcHhdG9YzLBAErvBGHyjjak%3D&reserved=0) > > > > > > > All errors (new ones prefixed by >>): > > > > > > > > ld.lld: error: relocation R_PPC_ADDR16_LO cannot be used against symbol 'init_task'; recompile with -fPIC > > > >>> defined in vmlinux.a(init/init_task.o) > > > >>> referenced by head_44x.S:101 (arch/powerpc/kernel/head_44x.S:101) > > > >>> arch/powerpc/kernel/head_44x.o:(.head.text+0x42) in archive vmlinux.a > > > -- > > > > > ld.lld: error: relocation R_PPC_ADDR16_HI cannot be used against symbol 'init_thread_union'; recompile with -fPIC > > > >>> defined in ./arch/powerpc/kernel/vmlinux.lds:133 > > > >>> referenced by head_44x.S:108 (arch/powerpc/kernel/head_44x.S:108) > > > >>> arch/powerpc/kernel/head_44x.o:(.head.text+0x4e) in archive vmlinux.a > > > > I checked the patch and couldn't find obvious clue between the patch and > > the error. > > > > commit d5cae2261b8691 only changes kernel/dma/contiguous.c, which is under > > CONFIG_DMA_CMA per kernel/dma/Makefile. In your config above, CONFIG_DMA_CMA > > is not even set, so the contigous.c should not be compiled. Could you help > > to double check? thanks! > > > > - Feng > > > > > Kconfig warnings: (for reference only) > > > WARNING: unmet direct dependencies detected for HOTPLUG_CPU > > > Depends on [n]: SMP [=y] && (PPC_PSERIES [=n] || PPC_PMAC [=n] || PPC_POWERNV [=n] || FSL_SOC_BOOKE [=n]) > > > Selected by [y]: > > > - PM_SLEEP_SMP [=y] && SMP [=y] && (ARCH_SUSPEND_POSSIBLE [=y] || ARCH_HIBERNATION_POSSIBLE [=y]) && PM_SLEEP [=y] > > > > > > -- > > > 0-DAY CI Kernel Test Service > > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fintel%2Flkp-tests%2Fwiki&data=05%7C02%7Cchristophe.leroy2%40cs-soprasteria.com%7C016c05b801ba48f2593f08dede2e29c2%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639192487094952205%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=sqz%2BJ2dpT3ZZjlQyyvAhgPdP9jS0kJLpbRKTcV4rM50%3D&reserved=0 > >