Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

Pull pid leak fix from Eric Biederman:
"Oleg noticed that put_pid(thread_pid) was not getting called when proc
was not compiled in.

Let's get that fixed before 5.7 is released and causes problems for
anyone"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
proc: Put thread_pid in release_task not proc_flush_pid

fs/proc/base.c

···
 void proc_flush_pid(struct pid *pid)
 {
 	proc_invalidate_siblings_dcache(&pid->inodes, &pid->lock);
-	put_pid(pid);
 }
 
 static struct dentry *proc_pid_instantiate(struct dentry * dentry,

kernel/exit.c

···
 
 	write_unlock_irq(&tasklist_lock);
 	proc_flush_pid(thread_pid);
+	put_pid(thread_pid);
 	release_thread(p);
 	put_task_struct_rcu_user(p);