From 6ece15cc69504348ad484564d14968c542987053 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 18 Aug 2015 00:33:29 -0300 Subject: Linux-libre 4.1.6-gnu --- drivers/xen/gntdev.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/xen') diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 892748507..4bd23bba8 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -568,12 +568,14 @@ static int gntdev_release(struct inode *inode, struct file *flip) pr_debug("priv %p\n", priv); + mutex_lock(&priv->lock); while (!list_empty(&priv->maps)) { map = list_entry(priv->maps.next, struct grant_map, next); list_del(&map->next); gntdev_put_map(NULL /* already removed */, map); } WARN_ON(!list_empty(&priv->freeable_maps)); + mutex_unlock(&priv->lock); if (use_ptemod) mmu_notifier_unregister(&priv->mn, priv->mm); -- cgit v1.2.3-54-g00ecf