1 files changed, 177 insertions, 179 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index ca651ac00660..c87b6b9a8a76 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -47,7 +47,7 @@
  *  Overall revision about smaps.
  */
 
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 #include <linux/errno.h>
 #include <linux/time.h>
@@ -85,6 +85,11 @@
 #include <linux/user_namespace.h>
 #include <linux/fs_struct.h>
 #include <linux/slab.h>
+#include <linux/sched/autogroup.h>
+#include <linux/sched/mm.h>
+#include <linux/sched/coredump.h>
+#include <linux/sched/debug.h>
+#include <linux/sched/stat.h>
 #include <linux/flex_array.h>
 #include <linux/posix-timers.h>
 #ifdef CONFIG_HARDWALL
@@ -104,9 +109,12 @@
  *	in /proc for a task before it execs a suid executable.
  */
 
+static u8 nlink_tid;
+static u8 nlink_tgid;
+
 struct pid_entry {
 	const char *name;
-	int len;
+	unsigned int len;
 	umode_t mode;
 	const struct inode_operations *iop;
 	const struct file_operations *fop;
@@ -139,13 +147,13 @@ struct pid_entry {
  * Count the number of hardlinks for the pid_entry table, excluding the .
  * and .. links.
  */
-static unsigned int pid_entry_count_dirs(const struct pid_entry *entries,
+static unsigned int __init pid_entry_nlink(const struct pid_entry *entries,
 	unsigned int n)
 {
 	unsigned int i;
 	unsigned int count;
 
-	count = 0;
+	count = 2;
 	for (i = 0; i < n; ++i) {
 		if (S_ISDIR(entries[i].mode))
 			++count;
@@ -289,101 +297,69 @@ static ssize_t proc_pid_cmdline_read(struct file *file, char __user *buf,
 		}
 	} else {
 		/*
-		 * Command line (1 string) occupies ARGV and maybe
-		 * extends into ENVP.
-		 */
-		if (len1 + len2 <= *pos)
-			goto skip_argv_envp;
-		if (len1 <= *pos)
-			goto skip_argv;
-
-		p = arg_start + *pos;
-		len = len1 - *pos;
-		while (count > 0 && len > 0) {
-			unsigned int _count, l;
-			int nr_read;
-			bool final;
-
-			_count = min3(count, len, PAGE_SIZE);
-			nr_read = access_remote_vm(mm, p, page, _count, 0);
-			if (nr_read < 0)
-				rv = nr_read;
-			if (nr_read <= 0)
-				goto out_free_page;
-
-			/*
-			 * Command line can be shorter than whole ARGV
-			 * even if last "marker" byte says it is not.
-			 */
-			final = false;
-			l = strnlen(page, nr_read);
-			if (l < nr_read) {
-				nr_read = l;
-				final = true;
-			}
-
-			if (copy_to_user(buf, page, nr_read)) {
-				rv = -EFAULT;
-				goto out_free_page;
-			}
-
-			p	+= nr_read;
-			len	-= nr_read;
-			buf	+= nr_read;
-			count	-= nr_read;
-			rv	+= nr_read;
-
-			if (final)
-				goto out_free_page;
-		}
-skip_argv:
-		/*
 		 * Command line (1 string) occupies ARGV and
 		 * extends into ENVP.
 		 */
-		if (len1 <= *pos) {
-			p = env_start + *pos - len1;
-			len = len1 + len2 - *pos;
-		} else {
-			p = env_start;
-			len = len2;
+		struct {
+			unsigned long p;
+			unsigned long len;
+		} cmdline[2] = {
+			{ .p = arg_start, .len = len1 },
+			{ .p = env_start, .len = len2 },
+		};
+		loff_t pos1 = *pos;
+		unsigned int i;
+
+		i = 0;
+		while (i < 2 && pos1 >= cmdline[i].len) {
+			pos1 -= cmdline[i].len;
+			i++;
 		}
-		while (count > 0 && len > 0) {
-			unsigned int _count, l;
-			int nr_read;
-			bool final;
-
-			_count = min3(count, len, PAGE_SIZE);
-			nr_read = access_remote_vm(mm, p, page, _count, 0);
-			if (nr_read < 0)
-				rv = nr_read;
-			if (nr_read <= 0)
-				goto out_free_page;
-
-			/* Find EOS. */
-			final = false;
-			l = strnlen(page, nr_read);
-			if (l < nr_read) {
-				nr_read = l;
-				final = true;
-			}
-
-			if (copy_to_user(buf, page, nr_read)) {
-				rv = -EFAULT;
-				goto out_free_page;
+		while (i < 2) {
+			p = cmdline[i].p + pos1;
+			len = cmdline[i].len - pos1;
+			while (count > 0 && len > 0) {
+				unsigned int _count, l;
+				int nr_read;
+				bool final;
+
+				_count = min3(count, len, PAGE_SIZE);
+				nr_read = access_remote_vm(mm, p, page, _count, 0);
+				if (nr_read < 0)
+					rv = nr_read;
+				if (nr_read <= 0)
+					goto out_free_page;
+
+				/*
+				 * Command line can be shorter than whole ARGV
+				 * even if last "marker" byte says it is not.
+				 */
+				final = false;
+				l = strnlen(page, nr_read);
+				if (l < nr_read) {
+					nr_read = l;
+					final = true;
+				}
+
+				if (copy_to_user(buf, page, nr_read)) {
+					rv = -EFAULT;
+					goto out_free_page;
+				}
+
+				p	+= nr_read;
+				len	-= nr_read;
+				buf	+= nr_read;
+				count	-= nr_read;
+				rv	+= nr_read;
+
+				if (final)
+					goto out_free_page;
 			}
 
-			p	+= nr_read;
-			len	-= nr_read;
-			buf	+= nr_read;
-			count	-= nr_read;
-			rv	+= nr_read;
-
-			if (final)
-				goto out_free_page;
+			/* Only first chunk can be read partially. */
+			pos1 = 0;
+			i++;
 		}
-skip_argv_envp:
-		;
 	}
 
 out_free_page:
@@ -726,11 +702,11 @@ static int proc_pid_permission(struct inode *inode, int mask)
 	task = get_proc_task(inode);
 	if (!task)
 		return -ESRCH;
-	has_perms = has_pid_permissions(pid, task, 1);
+	has_perms = has_pid_permissions(pid, task, HIDEPID_NO_ACCESS);
 	put_task_struct(task);
 
 	if (!has_perms) {
-		if (pid->hide_pid == 2) {
+		if (pid->hide_pid == HIDEPID_INVISIBLE) {
 			/*
 			 * Let's make getdents(), stat(), and open()
 			 * consistent with each other.  If a process
@@ -795,7 +771,7 @@ struct mm_struct *proc_mem_open(struct inode *inode, unsigned int mode)
 
 		if (!IS_ERR_OR_NULL(mm)) {
 			/* ensure this mm_struct can't be freed */
-			atomic_inc(&mm->mm_count);
+			mmgrab(mm);
 			/* but do not pin its memory */
 			mmput(mm);
 		}
@@ -842,7 +818,7 @@ static ssize_t mem_rw(struct file *file, char __user *buf,
 		return -ENOMEM;
 
 	copied = 0;
-	if (!atomic_inc_not_zero(&mm->mm_users))
+	if (!mmget_not_zero(mm))
 		goto free;
 
 	/* Maybe we should limit FOLL_FORCE to actual ptrace users? */
@@ -950,7 +926,7 @@ static ssize_t environ_read(struct file *file, char __user *buf,
 		return -ENOMEM;
 
 	ret = 0;
-	if (!atomic_inc_not_zero(&mm->mm_users))
+	if (!mmget_not_zero(mm))
 		goto free;
 
 	down_read(&mm->mmap_sem);
@@ -1093,7 +1069,7 @@ static int __set_oom_adj(struct file *file, int oom_adj, bool legacy)
 		if (p) {
 			if (atomic_read(&p->mm->mm_users) > 1) {
 				mm = p->mm;
-				atomic_inc(&mm->mm_count);
+				mmgrab(mm);
 			}
 			task_unlock(p);
 		}
@@ -1243,7 +1219,7 @@ static const struct file_operations proc_oom_score_adj_operations = {
 };
 
 #ifdef CONFIG_AUDITSYSCALL
-#define TMPBUFLEN 21
+#define TMPBUFLEN 11
 static ssize_t proc_loginuid_read(struct file * file, char __user * buf,
 				  size_t count, loff_t *ppos)
 {
@@ -1664,11 +1640,63 @@ const struct inode_operations proc_pid_link_inode_operations = {
 
 /* building an inode */
 
-struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task)
+void task_dump_owner(struct task_struct *task, mode_t mode,
+		     kuid_t *ruid, kgid_t *rgid)
+{
+	/* Depending on the state of dumpable compute who should own a
+	 * proc file for a task.
+	 */
+	const struct cred *cred;
+	kuid_t uid;
+	kgid_t gid;
+
+	/* Default to the tasks effective ownership */
+	rcu_read_lock();
+	cred = __task_cred(task);
+	uid = cred->euid;
+	gid = cred->egid;
+	rcu_read_unlock();
+
+	/*
+	 * Before the /proc/pid/status file was created the only way to read
+	 * the effective uid of a /process was to stat /proc/pid.  Reading
+	 * /proc/pid/status is slow enough that procps and other packages
+	 * kept stating /proc/pid.  To keep the rules in /proc simple I have
+	 * made this apply to all per process world readable and executable
+	 * directories.
+	 */
+	if (mode != (S_IFDIR|S_IRUGO|S_IXUGO)) {
+		struct mm_struct *mm;
+		task_lock(task);
+		mm = task->mm;
+		/* Make non-dumpable tasks owned by some root */
+		if (mm) {
+			if (get_dumpable(mm) != SUID_DUMP_USER) {
+				struct user_namespace *user_ns = mm->user_ns;
+
+				uid = make_kuid(user_ns, 0);
+				if (!uid_valid(uid))
+					uid = GLOBAL_ROOT_UID;
+
+				gid = make_kgid(user_ns, 0);
+				if (!gid_valid(gid))
+					gid = GLOBAL_ROOT_GID;
+			}
+		} else {
+			uid = GLOBAL_ROOT_UID;
+			gid = GLOBAL_ROOT_GID;
+		}
+		task_unlock(task);
+	}
+	*ruid = uid;
+	*rgid = gid;
+}
+
+struct inode *proc_pid_make_inode(struct super_block * sb,
+				  struct task_struct *task, umode_t mode)
 {
 	struct inode * inode;
 	struct proc_inode *ei;
-	const struct cred *cred;
 
 	/* We need a new inode */
 
@@ -1678,6 +1706,7 @@ struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *t
 
 	/* Common stuff */
 	ei = PROC_I(inode);
+	inode->i_mode = mode;
 	inode->i_ino = get_next_ino();
 	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
 	inode->i_op = &proc_def_inode_operations;
@@ -1689,13 +1718,7 @@ struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *t
 	if (!ei->pid)
 		goto out_unlock;
 
-	if (task_dumpable(task)) {
-		rcu_read_lock();
-		cred = __task_cred(task);
-		inode->i_uid = cred->euid;
-		inode->i_gid = cred->egid;
-		rcu_read_unlock();
-	}
+	task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid);
 	security_task_to_inode(task, inode);
 
 out:
@@ -1706,12 +1729,12 @@ out_unlock:
 	return NULL;
 }
 
-int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
+int pid_getattr(const struct path *path, struct kstat *stat,
+		u32 request_mask, unsigned int query_flags)
 {
-	struct inode *inode = d_inode(dentry);
+	struct inode *inode = d_inode(path->dentry);
 	struct task_struct *task;
-	const struct cred *cred;
-	struct pid_namespace *pid = dentry->d_sb->s_fs_info;
+	struct pid_namespace *pid = path->dentry->d_sb->s_fs_info;
 
 	generic_fillattr(inode, stat);
 
@@ -1720,7 +1743,7 @@ int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 	stat->gid = GLOBAL_ROOT_GID;
 	task = pid_task(proc_pid(inode), PIDTYPE_PID);
 	if (task) {
-		if (!has_pid_permissions(pid, task, 2)) {
+		if (!has_pid_permissions(pid, task, HIDEPID_INVISIBLE)) {
 			rcu_read_unlock();
 			/*
 			 * This doesn't prevent learning whether PID exists,
@@ -1728,12 +1751,7 @@ int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 			 */
 			return -ENOENT;
 		}
-		if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
-		    task_dumpable(task)) {
-			cred = __task_cred(task);
-			stat->uid = cred->euid;
-			stat->gid = cred->egid;
-		}
+		task_dump_owner(task, inode->i_mode, &stat->uid, &stat->gid);
 	}
 	rcu_read_unlock();
 	return 0;
@@ -1749,18 +1767,11 @@ int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
  * Rewrite the inode's ownerships here because the owning task may have
  * performed a setuid(), etc.
  *
- * Before the /proc/pid/status file was created the only way to read
- * the effective uid of a /process was to stat /proc/pid.  Reading
- * /proc/pid/status is slow enough that procps and other packages
- * kept stating /proc/pid.  To keep the rules in /proc simple I have
- * made this apply to all per process world readable and executable
- * directories.
  */
 int pid_revalidate(struct dentry *dentry, unsigned int flags)
 {
 	struct inode *inode;
 	struct task_struct *task;
-	const struct cred *cred;
 
 	if (flags & LOOKUP_RCU)
 		return -ECHILD;
@@ -1769,17 +1780,8 @@ int pid_revalidate(struct dentry *dentry, unsigned int flags)
 	task = get_proc_task(inode);
 
 	if (task) {
-		if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
-		    task_dumpable(task)) {
-			rcu_read_lock();
-			cred = __task_cred(task);
-			inode->i_uid = cred->euid;
-			inode->i_gid = cred->egid;
-			rcu_read_unlock();
-		} else {
-			inode->i_uid = GLOBAL_ROOT_UID;
-			inode->i_gid = GLOBAL_ROOT_GID;
-		}
+		task_dump_owner(task, inode->i_mode, &inode->i_uid, &inode->i_gid);
+
 		inode->i_mode &= ~(S_ISUID | S_ISGID);
 		security_task_to_inode(task, inode);
 		put_task_struct(task);
@@ -1876,7 +1878,6 @@ static int map_files_d_revalidate(struct dentry *dentry, unsigned int flags)
 	bool exact_vma_exists = false;
 	struct mm_struct *mm = NULL;
 	struct task_struct *task;
-	const struct cred *cred;
 	struct inode *inode;
 	int status = 0;
 
@@ -1901,16 +1902,8 @@ static int map_files_d_revalidate(struct dentry *dentry, unsigned int flags)
 	mmput(mm);
 
 	if (exact_vma_exists) {
-		if (task_dumpable(task)) {
-			rcu_read_lock();
-			cred = __task_cred(task);
-			inode->i_uid = cred->euid;
-			inode->i_gid = cred->egid;
-			rcu_read_unlock();
-		} else {
-			inode->i_uid = GLOBAL_ROOT_UID;
-			inode->i_gid = GLOBAL_ROOT_GID;
-		}
+		task_dump_owner(task, 0, &inode->i_uid, &inode->i_gid);
+
 		security_task_to_inode(task, inode);
 		status = 1;
 	}
@@ -1967,7 +1960,7 @@ out:
 
 struct map_files_info {
 	fmode_t		mode;
-	unsigned long	len;
+	unsigned int	len;
 	unsigned char	name[4*sizeof(long)+2]; /* max: %lx-%lx\0 */
 };
 
@@ -2004,7 +1997,9 @@ proc_map_files_instantiate(struct inode *dir, struct dentry *dentry,
 	struct proc_inode *ei;
 	struct inode *inode;
 
-	inode = proc_pid_make_inode(dir->i_sb, task);
+	inode = proc_pid_make_inode(dir->i_sb, task, S_IFLNK |
+				    ((mode & FMODE_READ ) ? S_IRUSR : 0) |
+				    ((mode & FMODE_WRITE) ? S_IWUSR : 0));
 	if (!inode)
 		return -ENOENT;
 
@@ -2013,12 +2008,6 @@ proc_map_files_instantiate(struct inode *dir, struct dentry *dentry,
 
 	inode->i_op = &proc_map_files_link_inode_operations;
 	inode->i_size = 64;
-	inode->i_mode = S_IFLNK;
-
-	if (mode & FMODE_READ)
-		inode->i_mode |= S_IRUSR;
-	if (mode & FMODE_WRITE)
-		inode->i_mode |= S_IWUSR;
 
 	d_set_d_op(dentry, &tid_map_files_dentry_operations);
 	d_add(dentry, inode);
@@ -2178,7 +2167,7 @@ static const struct file_operations proc_map_files_operations = {
 	.llseek		= generic_file_llseek,
 };
 
-#ifdef CONFIG_CHECKPOINT_RESTORE
+#if defined(CONFIG_CHECKPOINT_RESTORE) && defined(CONFIG_POSIX_TIMERS)
 struct timers_private {
 	struct pid *pid;
 	struct task_struct *task;
@@ -2372,12 +2361,11 @@ static int proc_pident_instantiate(struct inode *dir,
 	struct inode *inode;
 	struct proc_inode *ei;
 
-	inode = proc_pid_make_inode(dir->i_sb, task);
+	inode = proc_pid_make_inode(dir->i_sb, task, p->mode);
 	if (!inode)
 		goto out;
 
 	ei = PROC_I(inode);
-	inode->i_mode = p->mode;
 	if (S_ISDIR(inode->i_mode))
 		set_nlink(inode, 2);	/* Use getattr to fix if necessary */
 	if (p->iop)
@@ -2412,14 +2400,14 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
 	 * Yes, it does not scale. And it should not. Don't add
 	 * new entries into /proc/<tgid>/ without very good reasons.
 	 */
-	last = &ents[nents - 1];
-	for (p = ents; p <= last; p++) {
+	last = &ents[nents];
+	for (p = ents; p < last; p++) {
 		if (p->len != dentry->d_name.len)
 			continue;
 		if (!memcmp(dentry->d_name.name, p->name, p->len))
 			break;
 	}
-	if (p > last)
+	if (p >= last)
 		goto out;
 
 	error = proc_pident_instantiate(dir, dentry, task, p);
@@ -2444,7 +2432,7 @@ static int proc_pident_readdir(struct file *file, struct dir_context *ctx,
 	if (ctx->pos >= nents + 2)
 		goto out;
 
-	for (p = ents + (ctx->pos - 2); p <= ents + nents - 1; p++) {
+	for (p = ents + (ctx->pos - 2); p < ents + nents; p++) {
 		if (!proc_fill_cache(file, ctx, p->name, p->len,
 				proc_pident_instantiate, task, p))
 			break;
@@ -2488,6 +2476,12 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
 	length = -ESRCH;
 	if (!task)
 		goto out_no_task;
+
+	/* A task may only write its own attributes. */
+	length = -EACCES;
+	if (current != task)
+		goto out;
+
 	if (count > PAGE_SIZE)
 		count = PAGE_SIZE;
 
@@ -2503,14 +2497,13 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
 	}
 
 	/* Guard against adverse ptrace interaction */
-	length = mutex_lock_interruptible(&task->signal->cred_guard_mutex);
+	length = mutex_lock_interruptible(&current->signal->cred_guard_mutex);
 	if (length < 0)
 		goto out_free;
 
-	length = security_setprocattr(task,
-				      (char*)file->f_path.dentry->d_name.name,
+	length = security_setprocattr(file->f_path.dentry->d_name.name,
 				      page, count);
-	mutex_unlock(&task->signal->cred_guard_mutex);
+	mutex_unlock(&current->signal->cred_guard_mutex);
 out_free:
 	kfree(page);
 out:
@@ -2936,7 +2929,7 @@ static const struct pid_entry tgid_base_stuff[] = {
 	REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations),
 	REG("setgroups",  S_IRUGO|S_IWUSR, proc_setgroups_operations),
 #endif
-#ifdef CONFIG_CHECKPOINT_RESTORE
+#if defined(CONFIG_CHECKPOINT_RESTORE) && defined(CONFIG_POSIX_TIMERS)
 	REG("timers",	  S_IRUGO, proc_timers_operations),
 #endif
 	REG("timerslack_ns", S_IRUGO|S_IWUGO, proc_pid_set_timerslack_ns_operations),
@@ -3059,17 +3052,15 @@ static int proc_pid_instantiate(struct inode *dir,
 {
 	struct inode *inode;
 
-	inode = proc_pid_make_inode(dir->i_sb, task);
+	inode = proc_pid_make_inode(dir->i_sb, task, S_IFDIR | S_IRUGO | S_IXUGO);
 	if (!inode)
 		goto out;
 
-	inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
 	inode->i_op = &proc_tgid_base_inode_operations;
 	inode->i_fop = &proc_tgid_base_operations;
 	inode->i_flags|=S_IMMUTABLE;
 
-	set_nlink(inode, 2 + pid_entry_count_dirs(tgid_base_stuff,
-						  ARRAY_SIZE(tgid_base_stuff)));
+	set_nlink(inode, nlink_tgid);
 
 	d_set_d_op(dentry, &pid_dentry_operations);
 
@@ -3181,7 +3172,9 @@ int proc_pid_readdir(struct file *file, struct dir_context *ctx)
 	     iter.tgid += 1, iter = next_tgid(ns, iter)) {
 		char name[PROC_NUMBUF];
 		int len;
-		if (!has_pid_permissions(ns, iter.task, 2))
+
+		cond_resched();
+		if (!has_pid_permissions(ns, iter.task, HIDEPID_INVISIBLE))
 			continue;
 
 		len = snprintf(name, sizeof(name), "%d", iter.tgid);
@@ -3352,17 +3345,15 @@ static int proc_task_instantiate(struct inode *dir,
 	struct dentry *dentry, struct task_struct *task, const void *ptr)
 {
 	struct inode *inode;
-	inode = proc_pid_make_inode(dir->i_sb, task);
+	inode = proc_pid_make_inode(dir->i_sb, task, S_IFDIR | S_IRUGO | S_IXUGO);
 
 	if (!inode)
 		goto out;
-	inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
 	inode->i_op = &proc_tid_base_inode_operations;
 	inode->i_fop = &proc_tid_base_operations;
 	inode->i_flags|=S_IMMUTABLE;
 
-	set_nlink(inode, 2 + pid_entry_count_dirs(tid_base_stuff,
-						  ARRAY_SIZE(tid_base_stuff)));
+	set_nlink(inode, nlink_tid);
 
 	d_set_d_op(dentry, &pid_dentry_operations);
 
@@ -3526,9 +3517,10 @@ static int proc_task_readdir(struct file *file, struct dir_context *ctx)
 	return 0;
 }
 
-static int proc_task_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
+static int proc_task_getattr(const struct path *path, struct kstat *stat,
+			     u32 request_mask, unsigned int query_flags)
 {
-	struct inode *inode = d_inode(dentry);
+	struct inode *inode = d_inode(path->dentry);
 	struct task_struct *p = get_proc_task(inode);
 	generic_fillattr(inode, stat);
 
@@ -3552,3 +3544,9 @@ static const struct file_operations proc_task_operations = {
 	.iterate_shared	= proc_task_readdir,
 	.llseek		= generic_file_llseek,
 };
+
+void __init set_proc_pid_nlink(void)
+{
+	nlink_tid = pid_entry_nlink(tid_base_stuff, ARRAY_SIZE(tid_base_stuff));
+	nlink_tgid = pid_entry_nlink(tgid_base_stuff, ARRAY_SIZE(tgid_base_stuff));
+}