Hi Alexey, [auto build test ERROR on linus/master] [also build test ERROR on v4.10-rc8 next-20170217] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Alexey-Gladkov/Add-pidfs-filesystem/20170219-070129 config: x86_64-randconfig-x001-201708 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): fs/proc/root.c: In function 'proc_kill_sb': >> fs/proc/root.c:107:9: error: 'struct pid_namespace' has no member named >> 'pidfs_self'; did you mean 'proc_self'? if (ns->pidfs_self) ^~ fs/proc/root.c:108:11: error: 'struct pid_namespace' has no member named 'pidfs_self'; did you mean 'proc_self'? dput(ns->pidfs_self); ^~ >> fs/proc/root.c:110:9: error: 'struct pid_namespace' has no member named >> 'pidfs_thread_self'; did you mean 'proc_thread_self'? if (ns->pidfs_thread_self) ^~ fs/proc/root.c:111:11: error: 'struct pid_namespace' has no member named 'pidfs_thread_self'; did you mean 'proc_thread_self'? dput(ns->pidfs_thread_self); ^~ fs/proc/root.c: In function 'pid_ns_prepare_proc': >> fs/proc/root.c:282:5: error: 'struct pid_namespace' has no member named >> 'pidfs_mnt'; did you mean 'proc_mnt'? ns->pidfs_mnt = mnt; ^~ fs/proc/root.c: In function 'pid_ns_release_proc': fs/proc/root.c:292:18: error: 'struct pid_namespace' has no member named 'pidfs_mnt'; did you mean 'proc_mnt'? kern_unmount(ns->pidfs_mnt); ^~ -- fs/proc/self.c: In function 'proc_setup_self': >> fs/proc/self.c:66:5: error: 'struct pid_namespace' has no member named >> 'pidfs_self'; did you mean 'proc_self'? ns->pidfs_self = self; ^~ -- fs/proc/thread_self.c: In function 'proc_setup_thread_self': >> fs/proc/thread_self.c:67:5: error: 'struct pid_namespace' has no member >> named 'pidfs_thread_self'; did you mean 'proc_thread_self'? ns->pidfs_thread_self = thread_self; ^~ vim +107 fs/proc/root.c 101 { 102 struct pid_namespace *ns; 103 104 ns = (struct pid_namespace *)sb->s_fs_info; 105 106 if (IS_ENABLED(CONFIG_PROC_PIDFS) && sb->s_type == &pidfs_fs_type) { > 107 if (ns->pidfs_self) 108 dput(ns->pidfs_self); 109 > 110 if (ns->pidfs_thread_self) 111 dput(ns->pidfs_thread_self); 112 } else { 113 if (ns->proc_self) 114 dput(ns->proc_self); 115 116 if (ns->proc_thread_self) 117 dput(ns->proc_thread_self); 118 } 119 120 kill_anon_super(sb); 121 put_pid_ns(ns); 122 } 123 124 static struct file_system_type proc_fs_type = { 125 .name = "proc", 126 .mount = proc_mount, 127 .kill_sb = proc_kill_sb, 128 .fs_flags = FS_USERNS_MOUNT, 129 }; 130 131 struct file_system_type pidfs_fs_type = { 132 .name = "pidfs", 133 .mount = proc_mount, 134 .kill_sb = proc_kill_sb, 135 .fs_flags = FS_USERNS_MOUNT, 136 }; 137 138 void __init proc_root_init(void) 139 { 140 int err; 141 142 proc_init_inodecache(); 143 set_proc_pid_nlink(); 144 err = register_filesystem(&proc_fs_type); 145 if (err) 146 return; 147 148 err = register_filesystem(&pidfs_fs_type); 149 if (err) 150 return; 151 152 proc_self_init(); 153 proc_thread_self_init(); 154 proc_symlink("mounts", NULL, "self/mounts"); 155 156 proc_net_init(); 157 158 #ifdef CONFIG_SYSVIPC 159 proc_mkdir("sysvipc", NULL); 160 #endif 161 proc_mkdir("fs", NULL); 162 proc_mkdir("driver", NULL); 163 proc_create_mount_point("fs/nfsd"); /* somewhere for the nfsd filesystem to be mounted */ 164 #if defined(CONFIG_SUN_OPENPROMFS) || defined(CONFIG_SUN_OPENPROMFS_MODULE) 165 /* just give it a mountpoint */ 166 proc_create_mount_point("openprom"); 167 #endif 168 proc_tty_init(); 169 proc_mkdir("bus", NULL); 170 proc_sys_init(); 171 } 172 173 static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) 174 { 175 generic_fillattr(d_inode(dentry), stat); 176 stat->nlink = proc_root.nlink + nr_processes(); 177 return 0; 178 } 179 180 static struct dentry *proc_root_lookup(struct inode * dir, struct dentry * dentry, unsigned int flags) 181 { 182 if (!proc_pid_lookup(dir, dentry, flags)) 183 return NULL; 184 185 return proc_lookup(dir, dentry, flags); 186 } 187 188 static int proc_root_readdir(struct file *file, struct dir_context *ctx) 189 { 190 if (ctx->pos < FIRST_PROCESS_ENTRY) { 191 int error = proc_readdir(file, ctx); 192 if (unlikely(error <= 0)) 193 return error; 194 ctx->pos = FIRST_PROCESS_ENTRY; 195 } 196 197 return proc_pid_readdir(file, ctx); 198 } 199 200 static int pidfs_root_readdir(struct file *file, struct dir_context *ctx) 201 { 202 if (ctx->pos < FIRST_PROCESS_ENTRY) 203 ctx->pos = FIRST_PROCESS_ENTRY; 204 205 return proc_pid_readdir(file, ctx); 206 } 207 208 /* 209 * The root /proc directory is special, as it has the 210 * <pid> directories. Thus we don't use the generic 211 * directory handling functions for that.. 212 */ 213 static const struct file_operations proc_root_operations = { 214 .read = generic_read_dir, 215 .iterate_shared = proc_root_readdir, 216 .llseek = generic_file_llseek, 217 }; 218 219 static const struct file_operations pidfs_root_operations = { 220 .read = generic_read_dir, 221 .iterate_shared = pidfs_root_readdir, 222 .llseek = generic_file_llseek, 223 }; 224 225 /* 226 * proc root can do almost nothing.. 227 */ 228 static const struct inode_operations proc_root_inode_operations = { 229 .lookup = proc_root_lookup, 230 .getattr = proc_root_getattr, 231 }; 232 233 static const struct inode_operations pidfs_root_inode_operations = { 234 .lookup = proc_pid_lookup, 235 .getattr = proc_root_getattr, 236 }; 237 238 /* 239 * This is the root "inode" in the /proc tree.. 240 */ 241 struct proc_dir_entry proc_root = { 242 .low_ino = PROC_ROOT_INO, 243 .namelen = 5, 244 .mode = S_IFDIR | S_IRUGO | S_IXUGO, 245 .nlink = 2, 246 .count = ATOMIC_INIT(1), 247 .proc_iops = &proc_root_inode_operations, 248 .proc_fops = &proc_root_operations, 249 .parent = &proc_root, 250 .subdir = RB_ROOT, 251 .name = "/proc", 252 }; 253 254 struct proc_dir_entry pidfs_root = { 255 .low_ino = PROC_ROOT_INO, 256 .namelen = 6, 257 .mode = S_IFDIR | S_IRUGO | S_IXUGO, 258 .nlink = 2, 259 .count = ATOMIC_INIT(1), 260 .proc_iops = &pidfs_root_inode_operations, 261 .proc_fops = &pidfs_root_operations, 262 .parent = &pidfs_root, 263 .subdir = RB_ROOT, 264 .name = "/pidfs", 265 }; 266 267 int pid_ns_prepare_proc(struct pid_namespace *ns) 268 { 269 struct vfsmount *mnt; 270 271 mnt = kern_mount_data(&proc_fs_type, ns); 272 if (IS_ERR(mnt)) 273 return PTR_ERR(mnt); 274 275 ns->proc_mnt = mnt; 276 277 if (IS_ENABLED(CONFIG_PROC_PIDFS)) { 278 mnt = kern_mount_data(&pidfs_fs_type, ns); 279 if (IS_ERR(mnt)) 280 return PTR_ERR(mnt); 281 > 282 ns->pidfs_mnt = mnt; 283 } 284 return 0; 285 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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