1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 6c463c80e93d..b30196a00b0d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1438,6 +1438,7 @@ static void rt_mutex_init_task(struct task_struct *p)
 #ifdef CONFIG_RT_MUTEXES
         p->pi_waiters = RB_ROOT;
         p->pi_waiters_leftmost = NULL;
+        p->pi_top_task = NULL;
         p->pi_blocked_on = NULL;
 #endif
 }