tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git tmp head: 13665f1f8b5d501b40b1bc8448b0a032c7f04cc2 commit: 61ee9fde51c156f6af5609f475f16748a07b69ed [9/44] virtiofs fix leak in setup config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable tmp git checkout 61ee9fde51c156f6af5609f475f16748a07b69ed # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): fs/fuse/virtio_fs.c:723:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] 723 | const static struct virtio_device_id id_table[] = { | ^~~~~ fs/fuse/virtio_fs.c:728:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] 728 | const static unsigned int feature_table[] = {}; | ^~~~~ fs/fuse/virtio_fs.c:1065:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] 1065 | const static struct fuse_iqueue_ops virtio_fs_fiq_ops = { | ^~~~~ fs/fuse/virtio_fs.c: In function 'virtio_fs_get_tree': 1230 | fuse_mount_put(fm); | ^~~~~~~~~~~~~~ | fuse_conn_put 1230 | fuse_mount_put(fm); | ^~ | fc fs/fuse/virtio_fs.c:1230:19: note: each undeclared identifier is reported only once for each function it appears in cc1: some warnings being treated as errors Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for FRAME_POINTER Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS Selected by - FAULT_INJECTION_STACKTRACE_FILTER && FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT && !X86_64 && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86 vim +1230 fs/fuse/virtio_fs.c 1190 1191 static int virtio_fs_get_tree(struct fs_context *fsc) 1192 { 1193 struct virtio_fs *fs; 1194 struct super_block *sb; 1195 struct fuse_conn *fc; 1196 int err; 1197 1198 /* This gets a reference on virtio_fs object. This ptr gets installed 1199 * in fc->iq->priv. Once fuse_conn is going away, it calls ->put() 1200 * to drop the reference to this object. 1201 */ 1202 fs = virtio_fs_find_instance(fsc->source); 1203 if (!fs) { 1204 pr_info("virtio-fs: tag <%s> not found\n", fsc->source); 1205 return -EINVAL; 1206 } 1207 1208 fc = kzalloc(sizeof(struct fuse_conn), GFP_KERNEL); 1209 if (!fc) { 1210 mutex_lock(&virtio_fs_mutex); 1211 virtio_fs_put(fs); 1212 mutex_unlock(&virtio_fs_mutex); 1213 return -ENOMEM; 1214 } 1215 1216 fuse_conn_init(fc, get_user_ns(current_user_ns()), &virtio_fs_fiq_ops, 1217 fs); 1218 fc->release = fuse_free_conn; 1219 fc->delete_stale = true; 1220 1221 fsc->s_fs_info = fc; 1222 sb = sget_fc(fsc, virtio_fs_test_super, virtio_fs_set_super); 1223 fuse_conn_put(fc); 1224 if (IS_ERR(sb)) 1225 return PTR_ERR(sb); 1226 1227 if (!sb->s_root) { 1228 err = virtio_fs_fill_super(sb); 1229 if (err) { 1231 sb->s_fs_info = NULL; 1232 deactivate_locked_super(sb); 1233 return err; 1234 } 1235 1236 sb->s_flags |= SB_ACTIVE; 1237 } 1238 1239 WARN_ON(fsc->root); 1240 fsc->root = dget(sb->s_root); 1241 return 0; 1242 } 1243 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org