From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (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 84CC83148B4; Mon, 16 Feb 2026 16:39:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771259963; cv=none; b=BU2OapNnbxR+07O6VwAtGsjZRhzz9/T3kiTOGhOvNoisr8LcoQse2ZrlPFmX5MTftiA4YjBfZucbymPUt4xfaJcWuv9R1pk6uhoDt8Ri1RIB2AgPv5pIMYgt33WdvgHSe1d+SwMAGXgwcinJSkjKyWYXcCIUDYqDSsOp7fvz+f0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771259963; c=relaxed/simple; bh=z0Losj8G/4dRszkYX/isgeJrwD260mOkHbjcL4J7Tik=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=E47Hwfh+wedmJ/U2txqPWzqM9xquHOTSEL1ju+ScWuhWdtjboV6GF0CUCzI3+z1fcBmLYPapYgKJRQBEhh63lsrmBT8FLibPA8Usu3ejyahch0NiUjJbDYk98FmAjbVyrJQEjhRiEDrjfiP4/Ncl4Cy6zgrH5RmewdeSCgFJ5nE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Oz8CVXAG; arc=none smtp.client-ip=192.198.163.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Oz8CVXAG" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771259962; x=1802795962; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=z0Losj8G/4dRszkYX/isgeJrwD260mOkHbjcL4J7Tik=; b=Oz8CVXAGuWPLHcGmEwsVyzue6EswbYZ/r3Zvwfb1UM+oHu7T/vDuaq+5 QdNy3cg2LHFzn2y0Aoj12Z+zzWG8Zw00NisKug1abq1jfVta8KeH7hpMB c8sjYAnKhRLLBQePH5ArvB4AB044/gsjWAvZZ/VbDpi6SG0JUKDU8lCdJ TOC/EJc5opOsnCnhSDOHHb2KiXyCKeSyPdsi5sDURQKOiPDd9Irt/g+XW 7Yw0EMcVdn5yRhcNPHjelI0IDUz7jhnnATLnLBpQuW7MNsSQ6gC7101mG LaGbanh3iq3ho3aHrBBunzpaMvW1tJeTU3O1+q0JTMOkqImW4BpK4KyJb A==; X-CSE-ConnectionGUID: 7yRaX8c/R0i3wrLirV8maQ== X-CSE-MsgGUID: gz6CPSRpQGuUBm8AKa4XQQ== X-IronPort-AV: E=McAfee;i="6800,10657,11703"; a="83064825" X-IronPort-AV: E=Sophos;i="6.21,294,1763452800"; d="scan'208";a="83064825" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2026 08:39:22 -0800 X-CSE-ConnectionGUID: ne2uYqFLTLi+cliUVGnJhA== X-CSE-MsgGUID: ryXKlHzRRmOqSZwEF9k5dA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,294,1763452800"; d="scan'208";a="244237790" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by orviesa002.jf.intel.com with ESMTP; 16 Feb 2026 08:39:17 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vs1cw-0000000105c-3dgA; Mon, 16 Feb 2026 16:39:14 +0000 Date: Tue, 17 Feb 2026 00:38:27 +0800 From: kernel test robot To: Vishal Chourasia , peterz@infradead.org, aboorvad@linux.ibm.com Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, boqun.feng@gmail.com, frederic@kernel.org, joelagnelf@nvidia.com, josh@joshtriplett.org, linux-kernel@vger.kernel.org, neeraj.upadhyay@kernel.org, paulmck@kernel.org, rcu@vger.kernel.org, rostedt@goodmis.org, srikar@linux.ibm.com, sshegde@linux.ibm.com, tglx@linutronix.de, urezki@gmail.com, samir@linux.ibm.com, vishalc@linux.ibm.com Subject: Re: [PATCH v2 2/2] cpuhp: Expedite RCU grace periods during SMT operations Message-ID: <202602170049.WQD7Wcuj-lkp@intel.com> References: <20260216121927.489062-6-vishalc@linux.ibm.com> Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260216121927.489062-6-vishalc@linux.ibm.com> Hi Vishal, kernel test robot noticed the following build errors: [auto build test ERROR on next-20260213] [also build test ERROR on linus/master] [cannot apply to tip/smp/core rcu/rcu/dev v6.19 v6.19-rc8 v6.19-rc7 v6.19] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Vishal-Chourasia/cpuhp-Optimize-SMT-switch-operation-by-batching-lock-acquisition/20260216-202247 base: next-20260213 patch link: https://lore.kernel.org/r/20260216121927.489062-6-vishalc%40linux.ibm.com patch subject: [PATCH v2 2/2] cpuhp: Expedite RCU grace periods during SMT operations config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260217/202602170049.WQD7Wcuj-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project e86750b29fa0ff207cd43213d66dabe565417638) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260217/202602170049.WQD7Wcuj-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202602170049.WQD7Wcuj-lkp@intel.com/ All errors (new ones prefixed by >>): >> ld.lld: error: duplicate symbol: rcu_expedite_gp >>> defined at update.c >>> kernel/rcu/update.o:(rcu_expedite_gp) in archive vmlinux.a >>> defined at srcutiny.c >>> kernel/rcu/srcutiny.o:(.text+0x1) in archive vmlinux.a -- >> ld.lld: error: duplicate symbol: rcu_unexpedite_gp >>> defined at update.c >>> kernel/rcu/update.o:(rcu_unexpedite_gp) in archive vmlinux.a >>> defined at srcutiny.c >>> kernel/rcu/srcutiny.o:(.text+0x41) in archive vmlinux.a -- >> ld.lld: error: duplicate symbol: rcu_expedite_gp >>> defined at update.c >>> kernel/rcu/update.o:(rcu_expedite_gp) in archive vmlinux.a >>> defined at tiny.c >>> kernel/rcu/tiny.o:(.text+0x1) in archive vmlinux.a -- >> ld.lld: error: duplicate symbol: rcu_unexpedite_gp >>> defined at update.c >>> kernel/rcu/update.o:(rcu_unexpedite_gp) in archive vmlinux.a >>> defined at tiny.c >>> kernel/rcu/tiny.o:(.text+0x41) in archive vmlinux.a -- >> ld.lld: error: duplicate symbol: rcu_expedite_gp >>> defined at update.c >>> kernel/rcu/update.o:(rcu_expedite_gp) in archive vmlinux.a >>> defined at slab_common.c >>> mm/slab_common.o:(.text+0x1) in archive vmlinux.a -- >> ld.lld: error: duplicate symbol: rcu_unexpedite_gp >>> defined at update.c >>> kernel/rcu/update.o:(rcu_unexpedite_gp) in archive vmlinux.a >>> defined at slab_common.c >>> mm/slab_common.o:(.text+0x41) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki