1 files changed, 6 insertions, 2 deletions

diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index 7fa476f01d05..660590710409 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -184,9 +184,13 @@ static void freezer_fork(struct cgroup_subsys *ss, struct task_struct *task)
 {
         struct freezer *freezer;
 
-        task_lock(task);
+        /*
+         * No lock is needed, since the task isn't on tasklist yet,
+         * so it can't be moved to another cgroup, which means the
+         * freezer won't be removed and will be valid during this
+         * function call.
+         */
         freezer = task_freezer(task);
-        task_unlock(task);
 
         spin_lock_irq(&freezer->lock);
         BUG_ON(freezer->state == CGROUP_FROZEN);