From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) (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 D807342A179; Thu, 20 Aug 2026 11:26:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787225205; cv=none; b=BBYuvRbOash+FZEGxWOT1m21F8TYDbHF35LouorTp8AsdvEh1T1heAu5L6lP+Gs1GjepV+lLOOBzs8ABMWCxNbnhF2vIDVDfyBPE28muFH7I5rE2oB3UMgIJjHdhF2YHyFxcilpMaiwJsqIjY9B7R/8jY0i+Bt+imH9MdtW/qxM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787225205; c=relaxed/simple; bh=RnEVAyO3fZbxn2usfvwOSgGAYa6AXEOJc0x8HTbo96s=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=dLhMUyxKqAhcMlJwZmioiG1/MmT+6SIPuUjpEWe1t9U1iHssuVszSou58aJyziWsAIUnUGqi+FfAXWOtVNVCU8RtIWEphclwGf9QGn9Wx+EpX4/KNmJQlargDeB7GGCCVmK5cEbsSSBCD3dTrtVo/OAv66xVfaecN1tko1W8msc= 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=cseTX6em; arc=none smtp.client-ip=192.198.163.16 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="cseTX6em" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1787225203; x=1818761203; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=RnEVAyO3fZbxn2usfvwOSgGAYa6AXEOJc0x8HTbo96s=; b=cseTX6emByO+9faGfA0yOIxOM4tLkOlvmDzgfK1eJC4mdO7ln8jYgunS BbSlAkG4LNHyL2gTvf+Z4vqHV8hBB4hopw6ae4lybuormopHQOFQ0wixl GeeTWSpD5Qb1GTsbRviPI2mRUA/wkhJOAwkEqCYYze+nhWqY5BEkP9L6i tmPOU0L7rgVrm2OBrD84bI7TdVx591LnTNbo1v/TpZntD5k7LErcZ59KO 1p9/MgCJ2Pb4aZEQ923b8k4PIk5DIE6R+LgOS7wd183uSJmORTH3DfjFe 3Fb3K6sHdzYNAouYKh0KVNHv+FQp9Dz2Ir9jrX1C0Hsolqo3shq7pN3j3 w==; X-CSE-ConnectionGUID: jaXCdLuJQDmARrkU0mzAmg== X-CSE-MsgGUID: JEA2vqSmQ4ehV2u/PnBVrA== X-IronPort-AV: E=McAfee;i="6800,10657,11880"; a="75289086" X-IronPort-AV: E=Sophos;i="6.25,233,1779174000"; d="scan'208";a="75289086" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Aug 2026 04:26:40 -0700 X-CSE-ConnectionGUID: BRZJeUzHQna/IO9H0wSuXg== X-CSE-MsgGUID: m3u0VzXmTrO5nsAdAX0Rqg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,233,1779174000"; d="scan'208";a="270226539" Received: from lkp-server01.sh.intel.com (HELO 6eda058d650d) ([10.239.97.150]) by orviesa005.jf.intel.com with ESMTP; 20 Aug 2026 04:26:38 -0700 Received: from kbuild by 6eda058d650d with local (Exim 4.98.2) (envelope-from ) id 1wx0up-00000000iol-2p44; Thu, 20 Aug 2026 11:26:35 +0000 Date: Thu, 20 Aug 2026 19:25:46 +0800 From: kernel test robot To: Steven Rostedt , LKML , Linux Trace Kernel Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Anubhav Shelat , Masami Hiramatsu , Shivank Garg , Ackerley Tng , Fuad Tabba , Christian Brauner , Sean Christopherson Subject: Re: [PATCH v3] tracefs: Add read-only eventfs filesystem at /sys/kernel/events Message-ID: <202608201957.NHoAQjoy-lkp@intel.com> References: <20260810160708.3460a2fd@gandalf.local.home> Precedence: bulk X-Mailing-List: linux-kernel@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: <20260810160708.3460a2fd@gandalf.local.home> Hi Steven, kernel test robot noticed the following build errors: [auto build test ERROR on v7.2] [also build test ERROR on next-20260819] [cannot apply to trace/for-next linus/master] [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/Steven-Rostedt/tracefs-Add-read-only-eventfs-filesystem-at-sys-kernel-events/20260810-160708 base: v7.2 patch link: https://lore.kernel.org/r/20260810160708.3460a2fd%40gandalf.local.home patch subject: [PATCH v3] tracefs: Add read-only eventfs filesystem at /sys/kernel/events config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260820/202608201957.NHoAQjoy-lkp@intel.com/config) compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260820/202608201957.NHoAQjoy-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/202608201957.NHoAQjoy-lkp@intel.com/ All errors (new ones prefixed by >>): >> fs/tracefs/event_inode.c:38:16: error: use of undeclared identifier 'EVENTFS_SUPER_MAGIC' 38 | sb->s_magic = EVENTFS_SUPER_MAGIC; | ^~~~~~~~~~~~~~~~~~~ 1 error generated. vim +/EVENTFS_SUPER_MAGIC +38 fs/tracefs/event_inode.c 30 31 static int eventfs_ro_fill_super(struct super_block *sb, struct fs_context *fc) 32 { 33 struct inode *inode; 34 struct dentry *root; 35 36 sb->s_blocksize = PAGE_SIZE; 37 sb->s_blocksize_bits = PAGE_SHIFT; > 38 sb->s_magic = EVENTFS_SUPER_MAGIC; 39 sb->s_op = &eventfs_ro_super_operations; 40 sb->s_time_gran = 1; 41 sb->s_flags |= SB_RDONLY; 42 43 inode = new_inode(sb); 44 if (!inode) 45 return -ENOMEM; 46 47 inode->i_ino = 1; 48 inode->i_mode = S_IFDIR | 0555; 49 simple_inode_init_ts(inode); 50 inode->i_op = &simple_dir_inode_operations; 51 inode->i_fop = &simple_dir_operations; 52 set_nlink(inode, 2); 53 54 set_default_d_op(sb, &tracefs_dentry_operations); 55 56 root = d_make_root(inode); 57 if (!root) 58 return -ENOMEM; 59 60 sb->s_root = root; 61 62 return 0; 63 } 64 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki