From: Roel Kluin <roel.kluin@gmail.com>
Date: Tue, 23 Jun 2009 05:23:48 +0000 (-0700)
Subject: IB/ehca: Ensure that guid_entry index is not negative
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=af04662b4d80de5797a595bc9855d09ef4fe55cc;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

IB/ehca: Ensure that guid_entry index is not negative

This prevents the memcpy() of a guid_entries element using a negative index.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
index 9209c5332dfe..8b92f85d4dd0 100644
--- a/drivers/infiniband/hw/ehca/ehca_hca.c
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -319,7 +319,7 @@ int ehca_query_gid(struct ib_device *ibdev, u8 port,
 					      ib_device);
 	struct hipz_query_port *rblock;
 
-	if (index > 255) {
+	if (index < 0 || index > 255) {
 		ehca_err(&shca->ib_device, "Invalid index: %x.", index);
 		return -EINVAL;
 	}