1 files changed, 7 insertions, 0 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index f252784f9330..ce9297e4e7d4 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -50,6 +50,7 @@
 #include <linux/taskstats_kern.h>
 #include <linux/random.h>
 #include <linux/tty.h>
+#include <linux/proc_fs.h>
 
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
@@ -1150,6 +1151,12 @@ static struct task_struct *copy_process(unsigned long clone_flags,
                 pid = alloc_pid(task_active_pid_ns(p));
                 if (!pid)
                         goto bad_fork_cleanup_namespaces;
+
+                if (clone_flags & CLONE_NEWPID) {
+                        retval = pid_ns_prepare_proc(task_active_pid_ns(p));
+                        if (retval < 0)
+                                goto bad_fork_free_pid;
+                }
         }
 
         p->pid = pid_nr(pid);