sched/clock: Prevent tracing recursion in sched_clock_cpu()

[~andy/linux] / kernel / pid.c

diff --git a/kernel/pid.c b/kernel/pid.c
index ebe5e80b10f8495a3d6459e0203821f987237df0..9b9a26698144e126486e162955e49561514b1ce8 100644 (file)
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -273,6 +273,11 @@ void free_pid(struct pid *pid)
                         */
                        wake_up_process(ns->child_reaper);
                        break;
+               case PIDNS_HASH_ADDING:
+                       /* Handle a fork failure of the first process */
+                       WARN_ON(ns->child_reaper);
+                       ns->nr_hashed = 0;
+                       /* fall through */
                case 0:
                        schedule_work(&ns->proc_work);
                        break;