diff options
Diffstat (limited to 'fs/proc/base.c')
| -rw-r--r-- | fs/proc/base.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 29313c35baa..b341dfc2447 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2375,11 +2375,19 @@ static const struct file_operations proc_map_files_operations = { */ static int proc_fd_permission(struct inode *inode, int mask) { - int rv = generic_permission(inode, mask); + struct task_struct *p; + int rv; + + rv = generic_permission(inode, mask); if (rv == 0) - return 0; - if (task_pid(current) == proc_pid(inode)) + return rv; + + rcu_read_lock(); + p = pid_task(proc_pid(inode), PIDTYPE_PID); + if (p && same_thread_group(p, current)) rv = 0; + rcu_read_unlock(); + return rv; } |