--- zzzz-none-000/linux-4.9.279/kernel/locking/mutex-debug.h	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/kernel/locking/mutex-debug.h	2023-02-08 11:43:43.000000000 +0000
@@ -29,12 +29,28 @@
 
 static inline void mutex_set_owner(struct mutex *lock)
 {
+	struct callerinfo *oi = &lock->owner_info;
+
 	WRITE_ONCE(lock->owner, current);
+
+	spin_lock(&lock->owner_lock);
+	put_pid(oi->pid);
+	oi->pid = get_task_pid(current, PIDTYPE_PID);
+	oi->ip = _RET_IP_;
+	spin_unlock(&lock->owner_lock);
 }
 
 static inline void mutex_clear_owner(struct mutex *lock)
 {
+	struct callerinfo *oi = &lock->owner_info;
+
 	WRITE_ONCE(lock->owner, NULL);
+
+	spin_lock(&lock->owner_lock);
+	put_pid(oi->pid);
+	oi->pid = NULL;
+	oi->ip = 0;
+	spin_unlock(&lock->owner_lock);
 }
 
 #define spin_lock_mutex(lock, flags)			\