From f2a0e45f36b0a210ff2388ed5fa89f81019c07a1 Mon Sep 17 00:00:00 2001
From: Leon Romanovsky <leonro@mellanox.com>
Date: Mon, 18 Feb 2019 22:25:52 +0200
Subject: [PATCH] RDMA/nldev: Don't expose number of not-visible entries
Netlink dumpit handshake exchanges the index from which kernel should
start to return its value, in current code, this index included
not-visible in this PID items too and indirectly revealed the number of
entries.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
drivers/infiniband/core/nldev.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 8b4f86ce50ce8..e7350d9d60e9b 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -1123,13 +1123,10 @@ static int res_get_common_dumpit(struct sk_buff *skb,
* objects.
*/
xa_for_each(&rt->xa, id, res) {
- if (idx < start)
- goto next;
-
if (!is_visible_in_pid_ns(res))
- goto next;
+ continue;
- if (!rdma_restrack_get(res))
+ if (idx < start || !rdma_restrack_get(res))
goto next;
xa_unlock(&rt->xa);
--
GitLab