1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8beb19c3bb44..477eb2e180c0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8140,7 +8140,8 @@ static int md_notify_reboot(struct notifier_block *this,
 
         for_each_mddev(mddev, tmp) {
                 if (mddev_trylock(mddev)) {
-                        __md_stop_writes(mddev);
+                        if (mddev->pers)
+                                __md_stop_writes(mddev);
                         mddev->safemode = 2;
                         mddev_unlock(mddev);
                 }