diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index 8f083611741f..637f1bd0c950 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -1310,7 +1310,10 @@ static ssize_t target_metric_store(struct kobject *kobj,
 
 		metric_name = &damos_sysfs_qgoal_metric_names[i];
 		if (sysfs_streq(buf, metric_name->name)) {
+			if (!mutex_trylock(&damon_sysfs_lock))
+				return -EBUSY;
 			goal->metric = metric_name->metric;
+			mutex_unlock(&damon_sysfs_lock);
 			return count;
 		}
 	}