commit 377b513485fd885dea1083a9a5430df65b35e048
author Eli Cohen <eli@dev.mellanox.co.il> Sun Sep 14 16:47:52 2014 +0300
committer Roland Dreier <roland@purestorage.com> Thu Oct 09 00:08:40 2014 -0700
tree 3947b460bda50002a70cbb9dad074d9cda8d3bad
parent 900a6d79176ea9172e19f86aa324e9198b40339c

IB/core: Avoid leakage from kernel to user space

Clear the reserved field of struct ib_uverbs_async_event_desc which is
copied to user space.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

drivers/infiniband/core/uverbs_main.c

diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index c73b22a..b21af1e 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -477,6 +477,7 @@
 
 	entry->desc.async.element    = element;
 	entry->desc.async.event_type = event;
+	entry->desc.async.reserved   = 0;
 	entry->counter               = counter;
 
 	list_add_tail(&entry->list, &file->async_file->event_list);