+--- a/kernel/pid.c
++++ b/kernel/pid.c
+@@ -427,6 +427,7 @@ struct task_struct *find_task_by_vpid(pi
+ {
+ return find_task_by_pid_ns(vnr, current->nsproxy->pid_ns);
+ }
++EXPORT_SYMBOL(find_task_by_vpid);
+
+ struct pid *get_task_pid(struct task_struct *task, enum pid_type type)
+ {
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -130,6 +130,9 @@