xenbus: Fix memory leak on release

Pending responses were leaked on close.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

diff --git a/drivers/xen/xenfs/xenbus.c b/drivers/xen/xenfs/xenbus.c
index 55791dd..8f6c7d4 100644 (file)
--- a/drivers/xen/xenfs/xenbus.c
+++ b/drivers/xen/xenfs/xenbus.c
@@ -543,6 +543,7 @@ static int xenbus_file_release(struct inode *inode, struct file *filp)
        struct xenbus_file_priv *u = filp->private_data;
        struct xenbus_transaction_holder *trans, *tmp;
        struct watch_adapter *watch, *tmp_watch;
+       struct read_buffer *rb, *tmp_rb;
 
        /*
         * No need for locking here because there are no other users,
@@ -561,6 +562,10 @@ static int xenbus_file_release(struct inode *inode, struct file *filp)
                free_watch_adapter(watch);
        }
 
+       list_for_each_entry_safe(rb, tmp_rb, &u->read_buffers, list) {
+               list_del(&rb->list);
+               kfree(rb);
+       }
        kfree(u);
 
        return 0;