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>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/xen/xenfs/xenbus.c b/drivers/xen/xenfs/xenbus.c
index 55791dd1105..8f6c7d4b3e4 100644
--- 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;