diff --git a/fs/xfs/xfs_healthmon.c b/fs/xfs/xfs_healthmon.c
index b57fa033cec4..c3749675ef19 100644
--- a/fs/xfs/xfs_healthmon.c
+++ b/fs/xfs/xfs_healthmon.c
@@ -1223,7 +1223,9 @@ xfs_ioc_health_monitor(
 	}
 	running_event->type = XFS_HEALTHMON_RUNNING;
 	running_event->domain = XFS_HEALTHMON_MOUNT;
+	mutex_lock(&hm->lock);
 	__xfs_healthmon_insert(hm, INSERT_HEAD, running_event);
+	mutex_unlock(&hm->lock);
 
 	/*
 	 * Preallocate the unmount event so that we can't fail to notify the