1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 117ea5fde568..f30f09cb08e8 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5382,6 +5382,8 @@ mdk_thread_t *md_register_thread(void (*run) (mddev_t *), mddev_t *mddev,
 
 void md_unregister_thread(mdk_thread_t *thread)
 {
+        if (!thread)
+                return;
         dprintk("interrupting MD-thread pid %d\n", task_pid_nr(thread->tsk));
 
         kthread_stop(thread->tsk);