From: Yuval Shaia <yuval.shaia@oracle.com>
Date: Thu, 6 Dec 2018 12:48:18 +0000 (+0200)
Subject: RDMA/core: Validate port number in query_pkey verb
X-Git-Tag: for-linus-20190104~64^2~100
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=9af3f5cf9d64a056eca53bc643f6288ad28bbbb5;p=linux-block.git

RDMA/core: Validate port number in query_pkey verb

Before calling the driver's function let's make sure port is valid.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 0027b0d79b09..348a7fb1f945 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -1042,6 +1042,9 @@ int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb,
 int ib_query_pkey(struct ib_device *device,
 		  u8 port_num, u16 index, u16 *pkey)
 {
+	if (!rdma_is_port_valid(device, port_num))
+		return -EINVAL;
+
 	return device->query_pkey(device, port_num, index, pkey);
 }
 EXPORT_SYMBOL(ib_query_pkey);