From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr680109.outbound.protection.outlook.com ([40.107.68.109]:27920 "EHLO NAM04-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726711AbeIBRWG (ORCPT ); Sun, 2 Sep 2018 13:22:06 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Lijun Ou , Jason Gunthorpe , Sasha Levin Subject: [PATCH AUTOSEL 4.18 122/131] RDMA/hns: Add illegal hop_num judgement Date: Sun, 2 Sep 2018 13:05:37 +0000 Message-ID: <20180902064601.183036-122-alexander.levin@microsoft.com> References: <20180902064601.183036-1-alexander.levin@microsoft.com> In-Reply-To: <20180902064601.183036-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org List-ID: From: Lijun Ou [ Upstream commit 26f63b9c33ceda12fb9136a1d0c80e03c9ebb514 ] When hop_num is more than three, it need to return -EINVAL. This patch fixes it. Signed-off-by: Lijun Ou Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/hns/hns_roce_hem.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_hem.c b/drivers/infiniband/= hw/hns/hns_roce_hem.c index 63b5b3edabcb..8dc336a85128 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hem.c +++ b/drivers/infiniband/hw/hns/hns_roce_hem.c @@ -494,6 +494,9 @@ static int hns_roce_table_mhop_get(struct hns_roce_dev = *hr_dev, step_idx =3D 1; } else if (hop_num =3D=3D HNS_ROCE_HOP_NUM_0) { step_idx =3D 0; + } else { + ret =3D -EINVAL; + goto err_dma_alloc_l1; } =20 /* set HEM base address to hardware */ --=20 2.17.1