diff --git a/sched/sched/sched_get_stateinfo.c b/sched/sched/sched_get_stateinfo.c
index 1f1d1d8444..10ae918012 100644
--- a/sched/sched/sched_get_stateinfo.c
+++ b/sched/sched/sched_get_stateinfo.c
@@ -28,6 +28,7 @@
 #include <stdio.h>
 #include <semaphore.h>
 #include <nuttx/mutex.h>
+#include <nuttx/irq.h>
 #include "nuttx/sched.h"
 
 /****************************************************************************
@@ -80,16 +81,23 @@ static FAR const char * const g_statenames[] =
 void nxsched_get_stateinfo(FAR struct tcb_s *tcb, FAR char *state,
                            size_t length)
 {
+  irqstate_t flags;
+
   /* if the state is waiting mutex */
 
+  flags = enter_critical_section();
+
   if (tcb->task_state == TSTATE_WAIT_SEM &&
       ((FAR sem_t *)(tcb->waitobj))->flags & SEM_TYPE_MUTEX)
     {
-      snprintf(state, length, "Waiting,Mutex:%d",
-               ((FAR mutex_t *)(tcb->waitobj))->holder);
+      pid_t holder = ((FAR mutex_t *)(tcb->waitobj))->holder;
+      leave_critical_section(flags);
+
+      snprintf(state, length, "Waiting,Mutex:%d", holder);
     }
   else
     {
+      leave_critical_section(flags);
       strlcpy(state, g_statenames[tcb->task_state], length);
     }
 }