diff options
| -rw-r--r-- | kernel/pid_namespace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 3cc29b830e9..0dbbc66b6ec 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -146,6 +146,8 @@ struct pid_namespace *copy_pid_ns(unsigned long flags, return get_pid_ns(old_ns); if (flags & (CLONE_THREAD|CLONE_PARENT)) return ERR_PTR(-EINVAL); + if (task_active_pid_ns(current) != old_ns) + return ERR_PTR(-EINVAL); return create_pid_namespace(user_ns, old_ns); } |