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X-CSE-ConnectionGUID: zzHhkoBiSJOoJQVYdEHocA== X-CSE-MsgGUID: 2xQVcKEDQ/GPTZcn6VHK9g== X-IronPort-AV: E=McAfee;i="6800,10657,11929"; a="183025" X-IronPort-AV: E=Sophos;i="6.27,147,1787036400"; d="scan'208";a="183025" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2026 16:41:49 -0700 X-CSE-ConnectionGUID: dP1lHaHmTMyy9T0eJ2hZIA== X-CSE-MsgGUID: cUIyxhZYTOawbtDtgjb4zg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,147,1787036400"; d="scan'208";a="109498" Received: from igk-lkp-server01.igk.intel.com (HELO d0de6c2a75a7) ([10.211.93.152]) by orviesa008.jf.intel.com with ESMTP; 08 Oct 2026 16:41:48 -0700 Received: from kbuild by d0de6c2a75a7 with local (Exim 4.98.2) (envelope-from ) id 1xExk9-000000006JH-1XC2; Thu, 08 Oct 2026 23:41:45 +0000 Date: Fri, 09 Oct 2026 01:41:21 +0200 From: kernel test robot To: Miklos Szeredi Cc: oe-kbuild-all@lists.linux.dev, fuse-devel@lists.sourceforge.net Subject: [mszeredi-fuse:extent-map-v4 26/29] fs/fuse/backing.c:159:undefined reference to `fsdev_dax_from_file' Message-ID: <202610090144.uLZlv2nF-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git extent-map-v4 head: 4b2887a36cd547c2e59952e0a202094c82d9c6a9 commit: 70cf1c0aef205f9384095f2536c61b945d320ef6 [26/29] fuse: add support for opening dax device as backing config: x86_64-rhel-9.4-bpf (https://download.01.org/0day-ci/archive/20261009/202610090144.uLZlv2nF-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/20261009/202610090144.uLZlv2nF-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/202610090144.uLZlv2nF-lkp@intel.com/ All errors (new ones prefixed by >>): ld: vmlinux.o: in function `fuse_backing_open_file': >> fs/fuse/backing.c:159:(.text+0xc0259d): undefined reference to `fsdev_dax_from_file' vim +159 fs/fuse/backing.c 130 131 static int fuse_backing_open_file(struct fuse_conn *fc, struct fuse_backing *fb, struct file *file) 132 { 133 struct inode *inode = file_inode(file); 134 struct dax_device *daxdev; 135 int err; 136 137 switch (inode->i_mode & S_IFMT) { 138 case S_IFREG: 139 /* TODO: relax CAP_SYS_ADMIN once backing files are visible to lsof */ 140 if (!fc->passthrough || !capable(CAP_SYS_ADMIN)) 141 return -EPERM; 142 143 if (inode->i_sb->s_stack_depth >= fc->max_stack_depth) 144 return -ELOOP; 145 146 fb->type = FUSE_BACKING_PATH; 147 fb->path = file->f_path; 148 path_get(&fb->path); 149 fb->cred = get_current_cred(); 150 return 0; 151 152 case S_IFCHR: 153 if (!fc->passthrough || !fc->backing_id_64) 154 return -EINVAL; 155 156 if (!IS_ENABLED(CONFIG_DEV_DAX_FSDEV)) 157 return -EINVAL; 158 > 159 daxdev = fsdev_dax_from_file(file); 160 if (!daxdev) 161 return -EINVAL; 162 163 err = -EPERM; 164 if (capable(CAP_SYS_RAWIO)) { 165 err = fs_dax_get(daxdev, fb, &fuse_dax_holder_ops); 166 if (!err) { 167 fb->type = FUSE_BACKING_DAXDEV; 168 fb->dax_dev = daxdev; 169 } 170 } 171 put_dax(daxdev); 172 return err; 173 174 case S_IFDIR: 175 return -EISDIR; 176 177 default: 178 return -EINVAL; 179 } 180 } 181 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki