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-rw-r--r--fs/proc/base.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 8a19a8a1a3e6..75b1979749a5 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2101,15 +2101,23 @@ static const struct file_operations proc_coredump_filter_operations = {
2101static int proc_self_readlink(struct dentry *dentry, char __user *buffer, 2101static int proc_self_readlink(struct dentry *dentry, char __user *buffer,
2102 int buflen) 2102 int buflen)
2103{ 2103{
2104 struct pid_namespace *ns = dentry->d_sb->s_fs_info;
2105 pid_t tgid = task_tgid_nr_ns(current, ns);
2104 char tmp[PROC_NUMBUF]; 2106 char tmp[PROC_NUMBUF];
2105 sprintf(tmp, "%d", task_tgid_vnr(current)); 2107 if (!tgid)
2108 return -ENOENT;
2109 sprintf(tmp, "%d", tgid);
2106 return vfs_readlink(dentry,buffer,buflen,tmp); 2110 return vfs_readlink(dentry,buffer,buflen,tmp);
2107} 2111}
2108 2112
2109static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd) 2113static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
2110{ 2114{
2115 struct pid_namespace *ns = dentry->d_sb->s_fs_info;
2116 pid_t tgid = task_tgid_nr_ns(current, ns);
2111 char tmp[PROC_NUMBUF]; 2117 char tmp[PROC_NUMBUF];
2112 sprintf(tmp, "%d", task_tgid_vnr(current)); 2118 if (!tgid)
2119 return ERR_PTR(-ENOENT);
2120 sprintf(tmp, "%d", task_tgid_nr_ns(current, ns));
2113 return ERR_PTR(vfs_follow_link(nd,tmp)); 2121 return ERR_PTR(vfs_follow_link(nd,tmp));
2114} 2122}
2115 2123