diff --git a/kernel/core_hook.c b/kernel/core_hook.c
index f7abef0e8648..1fbacfb7c9fc 100644
--- a/kernel/core_hook.c
+++ b/kernel/core_hook.c
@@ -391,7 +391,7 @@ static void try_umount(const char *mnt)
 	}
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
-	err = path_umount(&path, MNT_DETACH);
+	err = path_umount(&path, 0);
 	if (err) {
 		pr_info("umount %s failed: %d\n", mnt, err);
 	}