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X-CSE-ConnectionGUID: /yyGn12PSsSS/QTk4w5GCA== X-CSE-MsgGUID: +6UccrHjSxW7ATTl863hpQ== X-IronPort-AV: E=McAfee;i="6800,10657,11898"; a="92875162" X-IronPort-AV: E=Sophos;i="6.25,267,1779174000"; d="scan'208";a="92875162" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2026 02:22:13 -0700 X-CSE-ConnectionGUID: ui1el6UnS/SfrhlLxriEog== X-CSE-MsgGUID: a+nZmySQQU2BlKyZkXShFA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,267,1779174000"; d="scan'208";a="272591919" Received: from igk-lkp-server01.igk.intel.com (HELO cc074f2a4298) ([10.211.93.152]) by fmviesa004.fm.intel.com with ESMTP; 07 Sep 2026 02:22:12 -0700 Received: from kbuild by cc074f2a4298 with local (Exim 4.98.2) (envelope-from ) id 1x3VYI-000000000Be-1v4R; Mon, 07 Sep 2026 09:22:10 +0000 Date: Mon, 07 Sep 2026 11:21:36 +0200 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com Subject: kernel/bpf/btf.c:8758:undefined reference to `btf_kobj' Message-ID: <202609071155.KwITLv3v-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: :::::: :::::: Manual check reason: "low confidence bisect report" :::::: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev TO: Alan Maguire CC: 0day robot tree: https://github.com/intel-lab-lkp/linux/commits/Alan-Maguire/btf-Extend-UAPI-to-support-BTF-location-inline-site-info/20260901-175740 head: 9e05e3a3098276adea1e7277934c60598cde310e commit: ef28548058e47e9c824316fe339f88dfd00c35aa btf: Make vmlinux, module inline info available in /sys/kernel/btf date: 6 days ago :::::: branch date: 6 days ago :::::: commit date: 6 days ago config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260907/202609071155.KwITLv3v-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260907/202609071155.KwITLv3v-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/r/202609071155.KwITLv3v-lkp@intel.com/ All errors (new ones prefixed by >>): ld: kernel/bpf/btf.o: in function `sysfs_btf_add': >> kernel/bpf/btf.c:8758:(.text+0x10363): undefined reference to `btf_kobj' vim +8758 kernel/bpf/btf.c 18688de203b47e5 Kumar Kartikeya Dwivedi 2022-01-14 8737 ef28548058e47e9 Alan Maguire 2026-09-01 8738 #if IS_ENABLED(CONFIG_SYSFS) ef28548058e47e9 Alan Maguire 2026-09-01 8739 struct bin_attribute *sysfs_btf_add(const char *name, void *data, size_t data_size) ef28548058e47e9 Alan Maguire 2026-09-01 8740 { ef28548058e47e9 Alan Maguire 2026-09-01 8741 struct bin_attribute *attr; ef28548058e47e9 Alan Maguire 2026-09-01 8742 int err; ef28548058e47e9 Alan Maguire 2026-09-01 8743 ef28548058e47e9 Alan Maguire 2026-09-01 8744 attr = kzalloc_obj(*attr); ef28548058e47e9 Alan Maguire 2026-09-01 8745 if (!attr) ef28548058e47e9 Alan Maguire 2026-09-01 8746 return ERR_PTR(-ENOMEM); ef28548058e47e9 Alan Maguire 2026-09-01 8747 ef28548058e47e9 Alan Maguire 2026-09-01 8748 sysfs_bin_attr_init(attr); ef28548058e47e9 Alan Maguire 2026-09-01 8749 attr->attr.mode = 0444; ef28548058e47e9 Alan Maguire 2026-09-01 8750 attr->size = data_size; ef28548058e47e9 Alan Maguire 2026-09-01 8751 attr->private = data; ef28548058e47e9 Alan Maguire 2026-09-01 8752 attr->read = sysfs_bin_attr_simple_read; ef28548058e47e9 Alan Maguire 2026-09-01 8753 attr->attr.name = kstrdup(name, GFP_KERNEL); ef28548058e47e9 Alan Maguire 2026-09-01 8754 if (!attr->attr.name) { ef28548058e47e9 Alan Maguire 2026-09-01 8755 err = -ENOMEM; ef28548058e47e9 Alan Maguire 2026-09-01 8756 goto err_free; ef28548058e47e9 Alan Maguire 2026-09-01 8757 } ef28548058e47e9 Alan Maguire 2026-09-01 @8758 err = sysfs_create_bin_file(btf_kobj, attr); ef28548058e47e9 Alan Maguire 2026-09-01 8759 if (err) { ef28548058e47e9 Alan Maguire 2026-09-01 8760 pr_warn("failed to register [%s] BTF in sysfs: %d\n", name, err); ef28548058e47e9 Alan Maguire 2026-09-01 8761 goto err_free; ef28548058e47e9 Alan Maguire 2026-09-01 8762 } ef28548058e47e9 Alan Maguire 2026-09-01 8763 return attr; ef28548058e47e9 Alan Maguire 2026-09-01 8764 ef28548058e47e9 Alan Maguire 2026-09-01 8765 err_free: ef28548058e47e9 Alan Maguire 2026-09-01 8766 kfree(attr->attr.name); ef28548058e47e9 Alan Maguire 2026-09-01 8767 kfree(attr); ef28548058e47e9 Alan Maguire 2026-09-01 8768 return ERR_PTR(err); ef28548058e47e9 Alan Maguire 2026-09-01 8769 } ef28548058e47e9 Alan Maguire 2026-09-01 8770 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki