Hi Alexey, [auto build test WARNING on linus/master] [also build test WARNING 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-x003-201708 (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 warnings (new ones prefixed by >>): In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/uapi/linux/capability.h:16, from include/linux/capability.h:15, from include/linux/sched.h:15, from include/linux/uaccess.h:4, from fs/proc/root.c:9: 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) ^ include/linux/compiler.h:149:30: note: in definition of macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ >> fs/proc/root.c:107:3: note: in expansion of macro 'if' if (ns->pidfs_self) ^~ 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) ^ include/linux/compiler.h:149:42: note: in definition of macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ >> fs/proc/root.c:107:3: note: in expansion of macro 'if' if (ns->pidfs_self) ^~ 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) ^ include/linux/compiler.h:160:16: note: in definition of macro '__trace_if' ______r = !!(cond); \ ^~~~ >> fs/proc/root.c:107:3: note: in expansion of macro 'if' 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); ^~ In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/uapi/linux/capability.h:16, from include/linux/capability.h:15, from include/linux/sched.h:15, from include/linux/uaccess.h:4, from fs/proc/root.c:9: 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) ^ include/linux/compiler.h:149:30: note: in definition of macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ fs/proc/root.c:110:3: note: in expansion of macro 'if' if (ns->pidfs_thread_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) ^ include/linux/compiler.h:149:42: note: in definition of macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ fs/proc/root.c:110:3: note: in expansion of macro 'if' if (ns->pidfs_thread_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) ^ include/linux/compiler.h:160:16: note: in definition of macro '__trace_if' ______r = !!(cond); \ ^~~~ fs/proc/root.c:110:3: note: in expansion of macro 'if' 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); ^~ vim +/if +107 fs/proc/root.c 3 * 4 * Copyright (C) 1991, 1992 Linus Torvalds 5 * 6 * proc root directory handling functions 7 */ 8 > 9 #include <linux/uaccess.h> 10 11 #include <linux/errno.h> 12 #include <linux/time.h> 13 #include <linux/proc_fs.h> 14 #include <linux/stat.h> 15 #include <linux/init.h> 16 #include <linux/sched.h> 17 #include <linux/module.h> 18 #include <linux/bitops.h> 19 #include <linux/user_namespace.h> 20 #include <linux/mount.h> 21 #include <linux/pid_namespace.h> 22 #include <linux/parser.h> 23 24 #include "internal.h" 25 26 enum { 27 Opt_gid, Opt_hidepid, Opt_err, 28 }; 29 30 static const match_table_t tokens = { 31 {Opt_hidepid, "hidepid=%u"}, 32 {Opt_gid, "gid=%u"}, 33 {Opt_err, NULL}, 34 }; 35 36 int proc_parse_options(char *options, struct pid_namespace *pid) 37 { 38 char *p; 39 substring_t args[MAX_OPT_ARGS]; 40 int option; 41 42 if (!options) 43 return 1; 44 45 while ((p = strsep(&options, ",")) != NULL) { 46 int token; 47 if (!*p) 48 continue; 49 50 args[0].to = args[0].from = NULL; 51 token = match_token(p, tokens, args); 52 switch (token) { 53 case Opt_gid: 54 if (match_int(&args[0], &option)) 55 return 0; 56 pid->pid_gid = make_kgid(current_user_ns(), option); 57 break; 58 case Opt_hidepid: 59 if (match_int(&args[0], &option)) 60 return 0; 61 if (option < 0 || option > 2) { 62 pr_err("proc: hidepid value must be between 0 and 2.\n"); 63 return 0; 64 } 65 pid->hide_pid = option; 66 break; 67 default: 68 pr_err("proc: unrecognized mount option \"%s\" " 69 "or missing value\n", p); 70 return 0; 71 } 72 } 73 74 return 1; 75 } 76 77 int proc_remount(struct super_block *sb, int *flags, char *data) 78 { 79 struct pid_namespace *pid = sb->s_fs_info; 80 81 sync_filesystem(sb); 82 return !proc_parse_options(data, pid); 83 } 84 85 static struct dentry *proc_mount(struct file_system_type *fs_type, 86 int flags, const char *dev_name, void *data) 87 { 88 struct pid_namespace *ns; 89 90 if (flags & MS_KERNMOUNT) { 91 ns = data; 92 data = NULL; 93 } else { 94 ns = task_active_pid_ns(current); 95 } 96 97 return mount_ns(fs_type, flags, data, ns, ns->user_ns, proc_fill_super); 98 } 99 100 static void proc_kill_sb(struct super_block *sb) 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) --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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